2024-03-29T11:11:18Z
https://journals.urfu.ru/index.php/index/oai
oai:journals.urfu.ru:article/5478
2022-03-20T11:41:02Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5478
2022-03-20T11:41:02Z
Chimica Techno Acta
Том 9, № 1 (2022); 20229105
Unusual nicotinoylation of 4-phenyl-5,7-dihydroxycoumarin
https://journals.urfu.ru/index.php/chimtech/article/download/5478/12688
Sharapov, A. D.; Ural Federal University
Fatykhov, R. F.; Ural Federal University
Khalymbadzha, I. A.; Ural Federal University
Potapova, A. P.; Ural Federal University
Slepukhin, P. A.; Postovsky Institute of Organic Synthesis
Chupakhin, O. N.; Ural Federal University
2022-01-26 16:20:02
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5478
5,7-dihydroxy-4-phenylcoumarin; nicotinoylation; esterification; protecting group; inophyllum
en
In the present work, we report a convenient synthesis of 5- and 7-substituted-4-phenyl coumarins. In contrast to previous results obtained with 4-alkylcoumarins, nicotinoylation of 5,7-dihydroxy-4-phenylcoumarin with nicotinoyl benzotriazole or nicotinoyl azide selectively provides 5-O protected ester. The combination of the nicotinoylation reaction followed by tosylation-denicotinoylation yields 5-hydroxy-7-tosyloxy-coumarin derivative, which may be useful in the synthesis of inophyllum, a tetracyclic HIV reverse transcriptase inhibitor, as well as its analogues.
oai:journals.urfu.ru:article/4635
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4635
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 204-208
A convenient synthetic approach to 5-(het)arylhydrazine substituted 1,2,4-triazines
Krinochkin, A. P.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Guda, M. R.; Ural Federal University, Ekaterinburg
Rammohan, A.; Ural Federal University, Ekaterinburg
Kopchuk, D. S.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Zyryanov, G. V.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Rusinov, V. L.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Chupakhin, O. N.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
2020-12-20 23:01:39
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4635
1,2,4-triazines; (hetero)arylhydrazines; 5-cyano-1,2,4-triazines; ipso-substitution
This work was supported by the Russian Science Foundation (Grant # 19-73-10144) and Grants Council of the President of the Russian Federation (no. NSh-2700.2020.3)
en
A convenient synthesis of 1,2,4-triazines bearing the moieties of (hetero)arylhydrazines at the position of C5 of the 1,2,4-triazine core is reported.
oai:journals.urfu.ru:article/6915
2023-11-24T12:17:56Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6915
2023-11-24T12:17:56Z
Chimica Techno Acta
Том 10, № 3 (2023); 202310305
The effect of ammonia activation on the desalination potential of natural zeolite
Kenessova, Aruzhan K.; Al-Farabi Kazakh National University;
Center of Physicochemical Methods of Research and Analysis
Rakhym, Akmaral B.; Al-Farabi Kazakh National University;
Center of Physicochemical Methods of Research and Analysis
Zhaksybay, Bagashar B.; Al-Farabi Kazakh National University;
Center of Physicochemical Methods of Research and Analysis
Seilkhanova, Gulziya A.; Al-Farabi Kazakh National University;
Center of Physicochemical Methods of Research and Analysis
2023-08-04 16:44:36
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6915
natural zeolite; ammonia activation; desalination; sodium adsorption; potassium adsorption
en
Despite the abundance of water bodies on Earth, there is a limited amount of potable water. Therefore, the desalination process is of great interest. Adsorption of the main contaminants of saline water (Na+, K+, Cl– ions) is an alternative process of desalination. In the present work, a sorbent based on natural zeolite (NZ) modified with ammonium chloride (NH4Cl) is obtained and the effect of modification on the removal of Na+ and K+ ions from saline water is studied. According to the Brunauer-Emmett-Teller (BET) analysis, the modification of zeolite with NH4Cl leads to an increase in its surface area (7.85 to 8.09 m2/g). According to the results of the cation exchange capacity (CEC) determination, the modification leads to a decrease in total CEC of zeolite (431.67±29.01 to 300.88±31.86 meq/100 g). According to the obtained results, ammonia modification enhances the adsorption ability of NZ to extract Na+ and K+ ions from saline water. The extraction degree (E) of Na+ ions by NH4-Z increases from 7.93±1.63 to 10.44±1.52%, while for K+ ions it increases about 2 times (27.69±2.45 to 56.46±3.71%). These results indicate that the ammonia-modified NZ can potentially be used as a desalination agent for the removal of Na+ and K+ ions from saline water.
oai:journals.urfu.ru:article/4867
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4867
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 250-258
Annealing effect on temperature stability and mechanical stress at the “Cd<sub>x</sub>Pb<sub>1−x</sub>S film – substrate” interface
Maskaeva, L. N.; Ural Federal University, Ekaterinburg; Ural Institute of the State Fire Service of the EMERCOM of Russia, Ekaterinburg
Kutyavina, A. D.; Ural Federal University, Ekaterinburg
Pozdin, A. V.; Ural Federal University, Ekaterinburg
Miroshnikov, B. N.; Moscow Power Engineering Institute, Moscow
Miroshnikova, I. N.; Moscow Power Engineering Institute, Moscow
Markov, V. F.; Ural Federal University, Ekaterinburg; Ural Institute of the State Fire Service of the EMERCOM of Russia, Ekaterinburg
2020-12-28 01:14:23
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4867
chemical bath deposition (CBD); thin films; CdxPb1−xS solid solutions; annealing; mechanical stress
RFBR, projects No. 20-48-660041r_a and No. 18-29-11051mk; Ministry of Science and Higher Education of the Russian Federation (theme No. Н687.42Б.223/20)
en
The article establishes the upper temperature steadiness limit of СdxPb1-xS supersaturated solid solutions obtained by chemical bath deposition. СdxPb1-xS (x = 0.06; 0.122; 0.176) and (x = 0.02–0.05) films remained stable under the heating up to 405–410 and 450 K, respectively. SEM studies have shown that heating of СdxPb1-xS films (x = 0.02–0.05) to 620 K leads to the structure destruction. Internal mechanical compressive stresses at the "СdxPb1-xS film-substrate" interface was calculated in the range of 300–900 K for the first time ever, the highest values reached 2000–2750 kN/m2 for a number of the films compositions. In contrast to solid solutions, the expansion stresses up to 100 kN/m2 were derived for the CdS layer at 900 K. The obtained temperature steadiness boundaries and the mechanical stresses of СdxPb1-xS films must be taken into account in the development of photonic devices based on such materials.
oai:journals.urfu.ru:article/2247
2022-12-15T15:23:09Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/2247
2022-12-15T15:23:09Z
Chimica Techno Acta
Том 4, № 2 (2017); 105-111
Образование <i>трет</i>-бутилдифенилметилнитроксильного радикала в реакции дикротоната трифенилвисмута и C-фенил-N-<i>трет</i>-бутилнитрона в бензоле
Gushchin, A. V.; Нижегородский Государственный Университет им. Н.И. Лобачевского, Нижний Новгород
Kalistratova, O. S.; Нижегородский Государственный Университет им. Н.И. Лобачевского, Нижний Новгород
Maleeva, A. I.; Нижегородский Государственный Университет им. Н.И. Лобачевского, Нижний Новгород
Kuropatov, V. A.; Институт металлорганической химии им. Г. А. Разуваева РАН, Нижний Новгород
Yemelyanov, D. N.; Нижегородский Государственный Университет им. Н.И. Лобачевского, Нижний Новгород
2017-09-08 19:40:41
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/2247
electron spin resonance; triphenylbismuth dicrotonate; C-phenyl-N-tert-butylnitrone
en
Распад дикротоната трифенилвисмута на рассеянном свету в бензоле в присутствии спиновой ловушки C-фенил-N-трет-бутилнитрона приводит к образованию фенильных радикалов, которые регистрируются как аддукт PhCH(Ph)N(O•)Bu-t.Дикротонат трифенилвисмута Ph3Bi(O2CCH=CHCH3)2 в присутствии C-фенил-N-трет-бутилнитрона PhCH=N(O)Bu-t на свету распадается в бензоле. Аддукт фенильного радикала и спиновой ловушки PhCH(Ph)N(O•)Bu-t был зафиксирован методом ЭПР.
oai:journals.urfu.ru:article/6018
2022-08-29T06:13:28Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6018
2022-08-29T06:13:28Z
Chimica Techno Acta
Том 9, № 3 (2022); 20229308
Conversion of model C<sub>6</sub>–C<sub>9</sub> alkanes and straight-run gasoline over Pt(0.1%)-Fe(5%)/Al<sub>2</sub>O<sub>3</sub> catalysts promoted with various additives
Zhumabekova, Arai K.; Kazakh University of Technology and Business
Tastanova, Lyazzat K.; K. Zhubanov Aktobe Regional University
Orynbassar, Raigul O.; Al-Farabi Kazakh National University
Aubakirov, Yermek A.; Al-Farabi Kazakh National University
Zhunusova, Elvira B.; Kazakh University of Technology and Business
2022-07-26 15:43:07
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6018
C6–C9 n-alkanes; straight-run gasoline; zeolite-containing catalyst; modification; additives
en
Growing demand for hydrogen promotes the research devoted to the development of new catalysts for hydrocarbons processing in absence of H2 or at its low concentration. In the present work, it was shown that during the conversion of straight-run gasoline on a zeolite-containing polyfunctional catalyst in a hydrogen-free environment cracking, dehydrogenation, isomerization and alkylation take place due to the redistribution of H2 between initial and formed products directly on the catalyst surface. Fine particles (≤50 Å) localize in zeolite cavities and pores of aluminum oxide, while larger ones are on their outer surface.
oai:journals.urfu.ru:article/5447
2021-12-28T02:27:04Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5447
2021-12-28T02:27:04Z
Chimica Techno Acta
Том 8, № 4 (2021); 20218413
Composite materials based on dental acrylic plastic and chitosan
Yakovishin, L. A.; Sevastopol State University
Tkachenko, E. V.; Sevastopol State University
2021-12-17 09:32:28
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5447
polymer composites; poly(methyl methacrylate); chitosan; FT-IR spectroscopy
en
Chitosan and poly(methyl methacrylate) (PMMA) composites were synthesized by polymerization with heating and mechanochemical method. The obtained polymer composites were analyzed by the ATR FT-IR spectroscopy method. The presence of intermolecular hydrogen bonds and hydrophobic interactions in formation of PMMA and chitosan polymer composites was shown.
oai:journals.urfu.ru:article/4805
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4805
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 177-179
Obtaining cyclopentanone from acidic wastewater of caprolactam production
Tsvetkova, I. V.; Togliatti State University, Tolyatti
Golovanov, A. A.; Togliatti State University, Tolyatti
Reznikova, N. S.; Togliatti State University, Tolyatti
Chirkunova, N. V.; Togliatti State University, Tolyatti
2020-12-14 00:35:49
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4805
wastes from caprolactam production; adipic acid; cyclopentanone; derivatography; calcium adipate; gas chromatography
en
It has been shown that adipic acid released from the by-products of caprolactam production is a promising raw material for the production of cyclopentanone. The thermal stability of calcium adipate was investigated by the derivatographic method and the conditions were selected that ensure the yield of at least 50% of the target cyclopentanone with a purity of at least 99%.
oai:journals.urfu.ru:article/6369
2023-04-10T05:45:25Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6369
2023-04-10T05:45:25Z
Chimica Techno Acta
Том 10, № 1 (2023); 202310103
Сomparison of Au, Au-Pt, and Au-Ag nanoparticles as markers for immunochromatographic determination of nonylphenol
Berlina, Anna N.; A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences
Ragozina, Maria Y.; A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences
Komova, Nadezhda S.; A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences
Serebrennikova, Kseniya V.; A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences
Zherdev, Anatoly V.; A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences
Dzantiev, Boris B.; A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia
2022-12-19 13:15:19
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6369
gold nanoparticles; gold-platinum nanoflowers; gold-silver nanostars; immunochromatographic analysis; nonylphenol
en
Gold spherical nanoparticles, gold-platinum nanoflowers, and gold-silver nanostars were obtained and compared as labels for immunochromatographic analysis. The nanoparticles were synthesized by chemical reduction from various precursors and then conjugated with staphylococcal protein A to be used in indirect immunochromatographic determination of nonylphenol. The results obtained were evaluated in terms of analytical characteristics and R2 value, as well as the color intensity of the test band. According to the comparison results, it was revealed that the R2 value varied from 0.82 for the gold-silver nanostars to 0.96 for the spherical gold nanoparticles. The working range of determined concentrations was from 2 to 100 μg/mL for unspherical and from 2 to 50 μg/mL – for spherical markers used; the analysis time was 20 min.
oai:journals.urfu.ru:article/4739
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4739
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 222-228
To the question of the influence of a silanol cover on the protolytic properties of aminopropyl silica gels
Filisteev, O. V.; Kurgan State University, Kurgan
Sharov, A. V.; Kurgan State University, Kurgan
2020-12-21 00:00:54
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4739
functionalized sorbents; aminopropyl silica; protolytic properties; curves of potentiometric titration of sorbents
en
The paper proposes a model that describes the acid-base properties of amino groups grafted onto the surface, taking into account their interaction with silanol groups. For this, aminopropyl silica was chosen as an object with well-studied methods of preparation, structure and properties. The isotherms of sorption of hydrogen ions on aminopropyl silica were obtained by potentiometric method. The experimental points were analyzed numerically, taking into account the presence of an electric double layer, the presence of surface processes competing with the sorption of hydrogen ions, and the peculiarities of the behavior of silanol groups when the degree of surface filling with hydrogen ions changes. The resulting model makes it possible to carry out a preliminary calculation of the sorption of hydrogen ions on the surface of aminopropyl silica.
oai:journals.urfu.ru:article/1126
2022-12-15T15:10:51Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/1126
2022-12-15T15:10:51Z
Chimica Techno Acta
Том 2, № 2 (2015); 158-163
Синтез ациклических аналогов нуклеозидов гликозилиированием 1,2,4-триазоло[1,5-а]пиримидин-7-онов по одностадийному методу Форбрюггена
Khalymbadzha, I. A.; Институт органического синтеза УрО РАН, Екатеринбург
Deev, S. L.; Институт органического синтеза УрО РАН, Екатеринбург
Shestakova, T. S.; Институт органического синтеза УрО РАН, Екатеринбург
Rusinov, V. L.; Институт органического синтеза УрО РАН, Екатеринбург
Chupakhin, O. N.; Институт органического синтеза УрО РАН, Екатеринбург
2015-05-27 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/1126
analogues of acyclovir
en
Новые аналоги ацикловира были получены при взаимодействии 1,2,4-триазоло[1,5-а]пиримидин-7-онов 1а-i с (2-ацетоксиэтокси)метилацетатом 2 в присутствии триметилсилилтрифторметансульфоната как катализатора. Взаимодействие между соединениями 1а-е и 2 привело к смеси N3 и N4 изомеров. Напротив, взаимодействие соединений 1g-i и 2 протекало избирательно с образованием N3 изомеров. В случае веществ 1a-c преобладает продукт с ациклическим фрагментом в азиновом кольце (N4 изомер). Взаимодействие 1d-f и 2 привело к смесям, содержащим, главным образом, N3 изомер. Было установлено, что соотношение продуктов гликозилирования 1 и 2 управляется термодинамически. Структура полученных веществ была доказана 1Н, 13С, двумерной 1Н-13С ЯМР спектроскопией, а также рентгеноструктурным анализом.
oai:journals.urfu.ru:article/5453
2022-12-12T08:52:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5453
2022-12-12T08:52:03Z
Chimica Techno Acta
Том 9, № 2S (2022): Supplement; 202292S9
Drop motion during mass transfer accompanied by interphase convection
Titov, Anatolii G.; Ural Federal University
Rusinova, Zalina R.; Ural Federal University
Kalimullina, Ekaterina A.; Ural Federal University
Vorobev, Anatoliy M.; University of Southampton
2022-06-22 10:42:59
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5453
interphase convection; mass transfer; marangoni convection; liquid droplet; continuous phase
en
The article deals with the experimental study of the mass transfer of acetic acid from the dispersed phase (butyl acetate) to the continuous phase (water). The experiments were carried out on a laboratory column with single floating drops. The presence of the Marangoni effect during the movement of drops and its influence on the trajectories of movement of drops and the kinetics of mass transfer during extraction are shown. The influence of the Marangoni effect is most clearly observed when the driving force of the process is 0.1...0.2 mol/l.
oai:journals.urfu.ru:article/6272
2022-12-22T16:14:24Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6272
2022-12-22T16:14:24Z
Chimica Techno Acta
Том 9, № 4 (2022); 20229415
Local structure and ionic transport in acceptor-doped layered perovskite BaLa<sub>2</sub>In<sub>2</sub>O<sub>7</sub>
https://journals.urfu.ru/index.php/chimtech/article/download/6272/14571
Tarasova, Nataliia A.; Institute of High Temperature Electrochemistry UB RAS
2022-10-19 09:42:46
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6272
layered perovskite; ionic conductivity; acceptor doping; BaLa2In2O7
en
Materials with perovskite or perovskite-related structure have many applications because of theirs different physical and chemical properties. These applications are extremely diverse and cover different fields including hydrogen energy. Layered perovskites with Ruddlesden-Popper structure constitute a novel class of ionic conductors. In this paper, the effect of acceptor doping on the local structure and its relationship with transport properties were shown for layered perovskites based on BaLa2In2O7 for the first time. The geometric factor (the increase in the unit cell volume due to the increase in the ionic radii of cations) plays major role in the area of small dopant concentration (x < 0.15). The concentration factor (the increase in the oxygen vacancy concentration) is more significant in the area of big dopant concentration (x > 0.15). The acceptor doping is a promising way of improving the oxygen-ionic conductivity of layered perovskite BaLa2In2O7.
oai:journals.urfu.ru:article/7398
2024-03-27T12:59:29Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/7398
2024-03-27T12:59:29Z
Chimica Techno Acta
Том 11, № 1 (2024); 202411106
Synthesis and electrical properties of doped layered perovskites based on BaMInO<sub>4</sub> (M = Y, Gd)
Tarasova, Nataliia; Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University
Mashkovtsev, Maxim; Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University
Domashenkov, Maxim; Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University
Khionin, Denis; Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University
Bastrikov, Roman; Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University
Bedarkova, Anzhelika; Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University
2024-02-02 13:23:24
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/7398
layered perovskite; oxygen-ion conductivity; Ruddlesden-Popper; structure
en
Perovskite or perovskite-related structural materials are widely studied for their many functional properties. They can be used as components of electrochemical devices such as solid oxide fuel cells and electrolyzers. Layered perovskites can also be considered as promising materials for use in these devices. In this paper, the possibility of heterovalent (acceptor and donor) and isovalent doping of La and In sublattices of layered perovskites BaYLaInO4 and BaGdLaInO4 was made for the first time. The structure and electrical properties of these oxides were studied. Electrical conductivity values increase in the series BaYInO4–BaLaInO4–BaGdInO4. However, the doping is an unsuitable strategy for improving the electrical properties of BaYInO4 and BaGdInO4 oxides. Further search for highly conductive materials with the layered perovskite structure can be aimed at materials with a different composition of the cation sublattice.
oai:journals.urfu.ru:article/5912
2022-06-22T10:04:57Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5912
2022-06-22T10:04:57Z
Chimica Techno Acta
Том 9, № 2 (2022); 20229209
Ceramic materials based on lanthanum zirconate for the bone augmentation purposes: materials science approach
Tarasova, Nataliia; Institute of High Temperature Electrochemistry, UB RAS
Galisheva, Anzhelika; Institute of High Temperature Electrochemistry, UB RAS
Belova, Ksenia; Institute of High Temperature Electrochemistry, UB RAS
Mushnikova, Anastasia; Institute of High Temperature Electrochemistry, UB RAS
Volokitina, Elena; Institute of High Temperature Electrochemistry, UB RAS
2022-05-30 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5912
La2Zr2O7; bioceramics; augmentation; implant; osteoreplacement material
en
The creation of new non-toxic materials that combines high osteointegration and strength characteristics is an urgent contemporary challenge. The use of complex oxides, such as lanthanum zirconate (La2Zr2O7), as non-reservable alloplastic implant materials is a novel and promising way of fulfilling this challenge. In this work, the ceramic materials based on undoped and alkali-earth (Ca, Sr) doped La2Zr2O7 were obtained. The main physical and chemical characteristics of the ceramic materials were determined. The effects of synthesis method and dopant nature on the target characteristics of potential allografts were established.
oai:journals.urfu.ru:article/5083
2021-08-25T07:12:26Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5083
2021-08-25T07:12:26Z
Chimica Techno Acta
Том 8, № 2 (2021); 20218209
Bispyrenylalkane Chemosensor for the Naked-eye Detection of Nitro-explosives
Kovalev, I. S.; Ural Federal University, Yekaterinburg
Sadieva, L. K.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Taniya, O. S.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Yurk, V. M.; Ural Federal University, Yekaterinburg
Minin, A. S.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Kopchuk, D. S.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Zyryanov, G. V.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Charushin, V. N.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Chupakhin, O. N.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
2021-05-20 18:42:08
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5083
detection of explosives in aqueous media; chemical sensors; pyrene-based fluorophores; fluorescence quenching
This work was supported by the Russian Foundation for Basic Research (Project # 19-33-90155).
en
Pyrene-based compounds have a great potential as fluorescent chemosensors for various analytes including common nitro-explosives, such as 2,4,6-trinitrotoluene (TNT). Compounds having two pyrene units in one molecule, such as bispyrenylalkanes, are able to form stable, bright emissive in a visual wavelength region excimers both in non-polar and polar environments. In this work we wish to report that in non-polar solvents the excimer has poor chemosensing properties while in aqueous solutions it provides significant “turn-off” fluorescence response to TNT in the sub-nanomolar concentrations.
oai:journals.urfu.ru:article/4800
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4800
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 150-153
Molecular Complexation of Hederasaponin C with Cholesterol in Aqueous Isopropyl Alcohol
Yakovishin, L. A.; Sevastopol State University, Sevastopol
Grishkovets, V. I.; V.I. Vernadsky Crimean Federal University, Simferopol
Korzh, E. N.; Sevastopol State University, Sevastopol
Golovchenko, I. V.; Sevastopol State University, Sevastopol
Nagirnyak, A. A.; Sevastopol State University, Sevastopol
2020-12-13 20:46:54
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4800
triterpene glycosides; hederasaponin C; cholesterol; molecular complex
Internal grant of Sevastopol State University № 30/06-31
en
The 1:1 molecular complex of ivy triterpene glycoside hederasaponin C (HedC) with cholesterol (Chol) was obtained in aqueous isopropyl alcohol. The stability constant of (3.3 ± 0.7)∙106 (mol/L)–1 was calculated for the complex. The complexation was studied by UV- and ATR IR-Fourier spectroscopy, and method of isomolar series. The hydrogen bonds and hydrophobic interactions are formed in the molecular complex.
oai:journals.urfu.ru:article/5463
2022-12-12T08:52:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5463
2022-12-12T08:52:03Z
Chimica Techno Acta
Том 9, № 2S (2022): Supplement; 202292S1
Development of technology for obtaining electrodes based on copper wire using in the manufacture of solar modules
Illarionova, M. S.; Chuvash State University named after I. N. Ulyanov
Ivanova, K. Y.; Chuvash State University named after I. N. Ulyanov
Kuzmin, M. V.; Chuvash State University named after I. N. Ulyanov
Patianova, A. O.; Chuvash State University named after I. N. Ulyanov
Semenov, V. L.; Chuvash State University named after I. N. Ulyanov
2022-03-31 15:37:10
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5463
smart wire connection technology; POIN-52 brand tin-indium alloy; copper wire; mechanical and electrical parameters; solar module
en
To optimize the technological process of manufacturing copper wire coated with solder of the POIN-52 grade, the optimal modes for the tinning temperature, linear velocity, diameter of the diamond die and flux were identified. It was found that the best wire tinning process is achieved when cleaning the surface of a copper wire by the method of electrochemical degreasing. The results of the tests showed that, in terms of mechanical and electrical parameters wire meets the require-ments for electrodes in the manufacture of solar modules. The results of climatic tests of solar modules showed a high degree of reliability with a power loss of 0.86% and thermal cycling tests with a power loss of 0.4%, which is within tolerance.
oai:journals.urfu.ru:article/4636
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4636
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 209-214
New monomers for (bi)pyridine-containing polymers
Krinochkin, A. P.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Savchuk, M. I.; Ural Federal University, Ekaterinburg
Starnovskaya, E. S.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Shtaitz, Y. K.; Ural Federal University, Ekaterinburg
Kopchuk, D. S.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Nikonov, I. L.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Kovalev, I. S.; Ural Federal University, Ekaterinburg
Zyryanov, G. V.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Rusinov, V. L.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Chupakhin, O. N.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
2020-12-20 23:25:41
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4636
monomers; 1,2,4-triazines; (bi)pyridines; inverse demand Diels-Alder reaction
This work was supported by the Russian Foundation for Basic Research (Grant # 19-53-55002) and Grants Council of the President of the Russian Federation (no. NSh-2700.2020.3)
en
Convenient methods for the synthesis of three monomers based on functionalized (bi)pyridines with using “1,2,4-triaizine” methodology have been developed.
oai:journals.urfu.ru:article/7013
2024-01-12T19:33:09Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/7013
2024-01-12T19:33:09Z
Chimica Techno Acta
Том 10, № 4 (2023); 202310402
Ceramic materials based on lanthanum zirconate for the bone augmentation purposes: cytocompatibility in a cell culture model
Ulitko, Maria; Ural Federal University; Institute of Medical Cell Technologies
Antonets, Yulia; Ural Federal University
Antropova, Irina; Institute of High-Temperature Electrochemistry UB RAS;
Ural State Medical University
Mullabaev, Albert; Institute of High-Temperature Electrochemistry UB RAS
Volokitina, Elena; Institute of High-Temperature Electrochemistry UB RAS;
Ural State Medical University
Kasyanova, Anna; Institute of High-Temperature Electrochemistry UB RAS; Ural Federal University
Loginova, Ekaterina; Prior-M
Tarasova, Nataliia; Institute of High-Temperature Electrochemistry UB RAS
2023-08-16 09:26:15
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/7013
lanthanum zirconate; bioceramics; osteoreplacement material; cytocompatibility; cell culture
en
Creation of new ceramic materials for the bone augmentation purposes that combine the absence of cytotoxicity, high strength and osseointegration characteristics is an urgent modern task. In this work, the cytocompatibility of ceramic materials based on lanthanum zirconate (La2Zr2O7) was determined to assess the prospects for their use as implants and components of human joint endoprostheses. The effect of ceramic materials based on undoped and alkali-earth (Ca, Sr) doped La2Zr2O7 on the viability and proliferative activity of human cells was evaluated. The release of elements into the culture medium was also evaluated.
oai:journals.urfu.ru:article/5080
2022-03-25T16:11:14Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5080
2022-03-25T16:11:14Z
Chimica Techno Acta
Том 8, № 1 (2021): PCEE-2020 Special Issue; 20218109
Continuous copper leaching technology
Mukhortova, L. I.; Chuvash State University, Cheboksary
Nasakin, O. E.; Chuvash State University, Cheboksary
Eremkin, A. V.; Chuvash State University, Cheboksary
Glushkov, I. V.; Chuvash State University, Cheboksary
2021-04-13 11:29:10
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5080
copper leaching; copper waste treatment
en
The parameters of the continuous technological process of leaching copper from fine copper waste using nitric acid as an oxidizer are studied. Optimal conditions for a continuous leaching process were established, in which solutions with a mass concentration of copper ions greater than 25 g/dm3 were obtained.
oai:journals.urfu.ru:article/2398
2022-12-15T15:23:09Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/2398
2022-12-15T15:23:09Z
Chimica Techno Acta
Том 4, № 2 (2017); 112-119
Получение 1,2,4-триазинов с остатками высших спиртов в положении 5 в результате <i>ипсо</i>-замещения цианогруппы в отсутствие растворителя
Krinochkin, A. P.; Уральский федеральный университет, Екатеринбург
Kopchuk, D. S.; Уральский федеральный университет, Институт органического синтеза УрО РАН, Екатеринбург
Starnovskaya, E. S.; Уральский федеральный университет, Екатеринбург
Shtaiz, Ya. K.; Уральский федеральный университет, Екатеринбург
Khasanov, A. F.; Уральский федеральный университет, Екатеринбург
Kovalev, I. S.; Уральский федеральный университет, Екатеринбург
Taniya, O. S.; Уральский федеральный университет, Екатеринбург
Zyryanov, G. V.; Уральский федеральный университет, Институт органического синтеза УрО РАН, Екатеринбург
Rusinov, V. L.; Уральский федеральный университет, Институт органического синтеза УрО РАН, Екатеринбург
Chupakhin, O. N.; Уральский федеральный университет, Институт органического синтеза УрО РАН, Екатеринбург
2017-09-08 20:34:32
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/2398
1,2,4-triazines; higher alcohols; ipso-substitution; cyanogroup; solvent-free reactions
en
Предложен удобный метод получения 3,6-диарил-1,2,4-триазинов, имеющих в положении 5 остатки высших спиртов, в результате ипсо-замещения цианогруппы в отсутствие растворителя. Данный метод является новой модификацией замещения цианогруппы с целью функционализации 1,2,4-триазинового ядра.
oai:journals.urfu.ru:article/6010
2022-08-29T06:13:28Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6010
2022-08-29T06:13:28Z
Chimica Techno Acta
Том 9, № 3 (2022); 20229309
Glucose-assisted polyol synthesis of silver nanoplates and nanoprisms in the presence of oxyethylated carboxylic acid
Titkov, Alexander A.; Institute of Solid State Chemistry and Mechanochemistry SB RAS
Borisenko, Tatiana A.; Institute of Solid State Chemistry and Mechanochemistry SB RAS
Logutenko, Olga A.; Institute of Solid State Chemistry and Mechanochemistry SB RAS
2022-08-03 13:16:53
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6010
silver; nanoprisms; ethylene glycol; glucose; reduction
en
This work reports a simple route to synthesizing silver nanoplates and nanoprisms through a polyol approach in the presence of oxyethylated carboxylic acid and glucose. The resulting particles were characterized by electron microscopy and X-ray diffraction (XRD). The introduction of glucose and NaOH into the system substantially increases the yield of nanoplates and reduces their thickness. The optimized reaction conditions can be used to produce, in a one-pot synthesis, silver nanoplates and nanoprisms which may have applications as metallic fillers in ink and paste formulations for 2D and 3D printing to fabricate functional components and devices.
oai:journals.urfu.ru:article/5436
2021-12-28T02:27:04Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5436
2021-12-28T02:27:04Z
Chimica Techno Acta
Том 8, № 4 (2021); 20218414
Efficiency of ultrasonic treatment of polysaccharide from brown algae
Suprunchuk, Victoria E.; North-Caucasus Federal University
2021-12-23 16:37:28
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5436
fucoidan, cavitation, nanoparticles, depolymerization
Scholarship of the President of the Russian Federation to young scientists and graduate students № SP-1758.2021.4
en
Ultrasonic exposure can be used for depolymerization of brown algae polysaccharides. However, its effectiveness depends on several factors, including cavitation activity in the treatment medium. Therefore, the purpose of the work was to determine the cavitation activity and the effectiveness of the ultrasonic exposure to fucoidan in order to optimize the processing processes of polysaccharide from brown algae. A change in cavitation activity was revealed depending on the composition of the processing environment, as well as on the intensity of ultrasonic exposure with a constant frequency of the ultrasonic wave. Similar dynamics of change of cavitation activity were established at the intensity of ultrasonic treatment of 100 and 133 W/cm2 with amplification of electric signal at the increase of ultrasound intensity. The use of SDS in the processing medium led to an increase in cavitation activity to 14.9±0.47 mV. Treatment of the fucoidan solution for 40 minutes under various conditions allowed to obtain fractions with a change in the average hydrodynamic particle diameter from 113 nm (100 W/cm2) to 85 nm (200 W/cm2) and 124 nm (SDS).
oai:journals.urfu.ru:article/4806
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4806
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 180-185
Intermolecular Interaction of Glycyrrhizin with Cholesterol
Yakovishin, L. A.; Sevastopol State University, Sevastopol
Grishkovets, V. I.; V.I. Vernadsky Crimean Federal University, Simferopol
2020-12-14 00:35:54
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4806
triterpene glycosides; licorice; glycyrrhizin; glycyrrhizic acid; cholesterol; molecular complex
Internal grant of Sevastopol State University № 30/06-31.
en
The 1:1 molecular complex of licorice triterpene glycoside glycyrrhizic acid (in the form of monoammonium salt) with cholesterol was obtained in 80% aqueous isopropyl alcohol for the first time. The complexation was studied by 13C NMR, UV, and ATR IR-Fourier spectroscopy. The hydrogen bonds and hydrophobic interactions are formed in the molecular complex.
oai:journals.urfu.ru:article/6411
2023-04-10T05:45:25Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6411
2023-04-10T05:45:25Z
Chimica Techno Acta
Том 10, № 1 (2023); 202310106
2-(4-Oxo-1,3-thiazolidin-2-ylidene)acetamid as promising scaffold for designing new antifungal compounds
https://journals.urfu.ru/index.php/chimtech/article/download/6411/15149
Obydennov, Konstantin L.; Y-Synthesis
Kalinina, Tatiana A.; Ural Federal University
Ryabova, Daria V.; Ural Federal University
Kosterina, Maria F.; Ural Federal University
Glukhareva, Tatiana V.; Ural Federal University
2022-12-29 13:05:02
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6411
1,3-thiazolidine; cyanoacetamide; exocyclic double bond; fungicide; biological activity
en
1,3-Thiazolidin-4-one derivatives with a exocyclic C=C double bond in position 2 of the hetero ring have a wide spectrum of biological activity, but their fungicidal activity has not been studied as much as it should be. This paper presents a simple and convenient approach for obtaining potential antifungal agents based on 2-(4-oxo-1,3-thiazolidin-2-ylidene)acetamides. The first examples of evaluating the fungicidal activity of 8 obtained compounds on 8 strains of phytopathogenic fungi are presented. A highly active compound 4e with EC50 of 0.85 and 2.29 µg/mL against A. solani and P. lingam, respectively, was found to be promising for further study.
oai:journals.urfu.ru:article/4814
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4814
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 229-232
Synthesis and research of photocurable protective coatings on the basis of olygoesteracrylates
Karsakova, O. A.; Chuvash State University, Cheboksary
Kuzmin, M. V.; Chuvash State University, Cheboksary
2020-12-21 00:51:03
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4814
photocuring; protective coatings; polyethylene glycol dimethacrylate 400; triethylene glycol dimethacrylate ether; pentaerythritol tetraacrylate; oligourethane dimethacrylate; benzoyl peroxide; benzoin
Foundation for Support of Youth Startups of the FSBEI HE "Chuvash State University named after I. N. Ulyanov"
en
In this work, photocurable protective coatings based on methacrylic acid esters have been developed and their physical and mechanical properties have been investigated. The photocurable compositions were obtained by mixing at different ratios the following methacrylic acid esters: polyethylene glycol dimethacrylate 400 and triethylene glycol dimethacrylate ether, polyethylene glycol dimethacrylate 400 and oligourethane dimethacrylate, polyethylene glycol dimethacrylate 400 and pentaerythritol tetraacrylate. For the obtained compositions, the viscosity was studied using a Brookfield rotary viscometer. To initiate polymerization, a mixture of initiators was used: benzoyl peroxide and benzoin. Curing of the obtained compositions was carried out under the influence of UV rays for 2-5 minutes. For photo-cured compositions, their physical and mechanical properties have been studied. It was found that the composition based on polyethylene glycol dimethacrylate modified with triethylene glycol dimethacrylate at a ratio of 70:30 has the highest strength.
oai:journals.urfu.ru:article/1188
2022-12-15T15:10:51Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/1188
2022-12-15T15:10:51Z
Chimica Techno Acta
Том 2, № 2 (2015); 127-130
6-Аминотриазоло[1,5-a]пиримидины как предшественники 1,2,4-триазоло [5,1-b]пуринов
Savateev, K. V.; Институт органического синтеза УрО РАН, Екатеринбург
Borisov, S. S.; Институт органического синтеза УрО РАН, Екатеринбург
Voinkov, E. K.; Институт органического синтеза УрО РАН, Екатеринбург
Ulomsky, E. N.; Институт органического синтеза УрО РАН, Екатеринбург
Rusinov, V. L.; Институт органического синтеза УрО РАН, Екатеринбург
Chupakhin, O. N.; Институт органического синтеза УрО РАН, Екатеринбург
2015-05-27 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/1188
6-Aminotriazolo[1,5-a]pyrimidines; 1,2,4-triazolo[5,1-b]purines; Alzheimer's; Parkinson's; reduction of nitrogroup
en
Триазоло[5,1-b]пурины являются малораспространенными структурными аналогами природных нуклеозидов и нуклеиновых оснований пуринового ряда. В то же время известные представители азолопуринов проявляют широкий спектр противовирусного действия, активность в отношении ревматоидного артрита, псориаза, болезней Альцгеймера, Паркинсона и проч. Несмотря на практическую ценность, азоло[5,1-b]пурины чрезвычайно скупо представлены в химической литературе, что обусловлено сложностью их синтеза. Нами предложен удобный путь к синтезу триазолопуринов с участием аминотриазоло[1,5-a]пиримидинов (2) в качестве доступных исходных соединений, получаемых с хорошими выходами восстановлением нитропроизводных (1).
oai:journals.urfu.ru:article/5979
2022-12-22T16:14:24Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5979
2022-12-22T16:14:24Z
Chimica Techno Acta
Том 9, № 4 (2022); 20229405
Phosphorus-doped protonic conductors based on BaLa<sub>n</sub>In<sub>n</sub>O<sub>3n+1</sub> (n = 1, 2): applying oxyanion doping strategy to the layered perovskite structure
Tarasova, Nataliia; Institute of High Temperature Electrochemistry
Galisheva, Anzhelika; Institute of High Temperature Electrochemistry
2022-07-12 13:58:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5979
layered perovskite; oxyanion doping; phosphorus doping; proton conductivity; BaLaInO4; BaLa2In2O7
en
The creation of highly efficient and eco-friendly energy sources such as hydrogen energy systems is one of main vectors for the sustainable development of human society. Proton-conducting ceramic materials can be applied as one of the main components of such hydrogen- fueled electrochemical devices, including protonic ceramic fuel cells. The oxyanion doping strategy is a promising approach for improving transport properties of proton-conducting complex oxides. In this paper, this strategy was applied to proton-conducting layered perovskites for the first time. The phosphorus-doped protonic conductors based on BaLanInnO3n+1 (n = 1, 2) were obtained, and their electrical conductivity was thoroughly investigated. It was found that the phosphorous doping leads to an increase in the electrical conductivity values by ~0.7 orders of magnitude.
oai:journals.urfu.ru:article/6227
2022-12-22T16:14:24Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6227
2022-12-22T16:14:24Z
Chimica Techno Acta
Том 9, № 4 (2022); 20229417
Determination of reducing carbohydrates in natural honey samples by optical micrometry method
Shchemelev, Ivan S.; Lomonosov Moscow State University
Khasanov, Danil S.; Lomonosov Moscow State University
Smirnova, Maria A.; Lomonosov Moscow State University
Ivanov, Alexander V.; Lomonosov Moscow State University; Kurnakov Institute of General and Inorganic Chemistry of RAS
Ferapontov, Nikolay B.; Lomonosov Moscow State University
Tokmachev, Mikhail G.; Lomonosov Moscow State University
2022-11-07 15:25:42
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6227
determination of carbohydrates; optical micrometry; sensitive polymers; chelate esters; analysis of honey
en
The present article deals with the determination of the total amount of glucose and fructose in natural honey samples by the optical micrometry (OM) method. (Poly)vinyl alcohol spherical granules impregnated with a 0.05 mol/l borax solution were chosen as a sensitive element. It was shown that the formation of chelate esters of boron with polymer and carbohydrates is a pH-dependent process, and that the pH range 8.5–10.0 is the most appropriate for quantifying the total amount of reducing carbohydrates because glucose and fructose are undiscriminated. The impregnated polymer is not sensitive to the sucrose presence in the solution due to the absence of cis-diol fragments in it. Subsequently, the OM method was tested in the analysis of natural honey samples. The relative standart deviation in the case of OM method is less than 6%, and the results are similar to those obtained by the iodometric titration method. This makes the OM method suitable for laboratory-scale applications.
oai:journals.urfu.ru:article/5812
2022-06-22T10:04:57Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5812
2022-06-22T10:04:57Z
Chimica Techno Acta
Том 9, № 2 (2022); 20229210
Improved method for the obtaining DTTA-appended 2,2’-bipyridine ligands for lanthanide cations
Kopchuk, Dmitry S.; Ural Federal University; Postovsky Institute of Organic Synthesis
Krinochkin, Alexey P.; Ural Federal University; Postovsky Institute of Organic Synthesis
Valieva, Мaria I.; Ural Federal University; Postovsky Institute of Organic Synthesis
Starnovskaya, Еkaterina S.; Ural Federal University; Postovsky Institute of Organic Synthesis
Shtaitz, Yaroslav K.; Ural Federal University
Rybakova, Svetlana S.; Ural Federal University
Ladin, Evgeny D.; Ural Federal University
Kudryashova, Ekaterina A.; Ural Federal University
Sharafieva, Elvira R.; Ural Federal University; Ural State Medical University
Chupakhin, Оleg N.; Ural Federal University; Postovsky Institute of Organic Synthesis
2022-05-30 15:30:03
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5812
DTTA tert-butyl ester; 2,2'-bipyridines; Finkelstein reaction; ligands for lanthanide cations; alkylation
en
The composition of the reaction mixture after DTTA tert-butyl ester alkylation with 6'-halomethyl-5-phenyl-2,2'-bipyridines was studied. In addition to the target product, DTTA-appended 2,2’-bipyridine, the corresponding 6'-hydroxymethyl-substituted 2,2’-bipyridine and (5'-phenyl-[2,2'-bipyridin]-6-yl)methyl formate were isolated as by-products in some cases. Finally, an improved procedure for the DTTA tert-butyl ester alkylation with 6'-halomethyl-5-phenyl-2,2'-bipyridines by using Finkelstein reaction was developed.
oai:journals.urfu.ru:article/5186
2021-09-30T14:01:46Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5186
2021-09-30T14:01:46Z
Chimica Techno Acta
Том 8, № 3 (2021); 20210305
Synthesis and research of polyfunctional silylureas used in electric deposition of tin-indium alloy
Ivanova, K. Yu.; ФГБОУ ВПО «Чувашский государственный университет имени И.Н.Ульянова», 428015, Россия, г. Чебоксары, Московский пр., 15;
Kuzmin, M. V.; Chuvash State University named after I. N. Ulyanov, Cheboksary
Rogozhina, L. G.; Chuvash State University named after I. N. Ulyanov, Cheboksary
Patianova, A. O.; Chuvash State University named after I. N. Ulyanov, Cheboksary
Semenov, V. L.; Chuvash State University named after I. N. Ulyanov, Cheboksary
Alexandrov, R. I.; Chuvash State University named after I. N. Ulyanov, Cheboksary
2021-09-13 12:49:27
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5186
isophorone diisocyanate; hexamethylene diisocyanate; 2,4-toluene diisocyanate; 3-aminopropyltriethoxysilane; polyfunctional silylureas; electrodeposition; indium-tin alloy; copper wire; electrode; solar panels
en
Polyfunctional silylureas were synthesized by the interaction of 3-aminopropyltriethoxysilane with isocyanates of various structures in an inert aromatic solvent. Commercially available diisocyanates such as isophorone diisocyanate, hexamethylene diisocyanate, 2,4-toluene diisocyanate were used as isocyanates. In this case, freshly distilled toluene was used as a solvent. The structures of the obtained compounds were confirmed by the data of IR and NMR1H spectroscopy. Using the synthesized compounds, formulations of compositions for electrodeposition of a tin-indium alloy on a copper wire were developed. The possibility of using silylureas of various structures as effective surfactants used in the electrodeposition of the tin-indium alloy is shown. The operational characteristics of the obtained wire were investigated, including the wire diameter, coating thickness, tensile strength, electrical resistance, and direct current electrical resistivity.
oai:journals.urfu.ru:article/4801
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4801
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 154-158
Creating a virtual device for processing the results of sorption measurements in the study of zinc oxide nanorods
Maraeva, E. V.; Saint Petersburg Electrotechnical University «LETI», Saint Petersburg
Permiakov, N. V.; Saint Petersburg Electrotechnical University «LETI», Saint Petersburg
Kedruk, Y. Y.; Satbayev University, Almaty
Gritsenko, L. V.; Satbayev University, Almaty
Abdullin, Kh. A.; al-Farabi Kazakh National University, Almaty
2020-12-14 00:16:52
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4801
zinc oxide; nanorods; sorption measurements; virtual device
en
The work is devoted to the creation of a virtual device (computer program) for processing the results of sorption analysis of nanomaterials, including for estimating the size of nanoparticles based on the specific surface area. The obtained evaluation results were compared with the scanning electron microscopy data. Photocatalytically active zinc oxide samples were chosen as the object of the study.
oai:journals.urfu.ru:article/6012
2022-08-29T06:13:28Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6012
2022-08-29T06:13:28Z
Chimica Techno Acta
Том 9, № 3 (2022); 20229312
Effect of chemical treatment of multi-walled carbon nanotubes on the specific capacitance of supercapacitors
Golovakhin, Valeriy V.; Novosibirsk State Technical University
Kim, Ekaterina Yu.; Novosibirsk State Technical University
Novgorodtseva, Oksana N.; Novosibirsk State Technical University; Institute of Solid State Chemistry and Mechanochemistry
Bannov, Alexander G.; Novosibirsk State Technical University
2022-08-08 17:24:45
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6012
multi-walled carbon nanotubes; chemical treatment; functionalization; supercapacitors; cyclic voltammetry
en
To date, the research on carbon nanomaterials has progressed rapidly. More than 400 papers were written in 2021 on the application of carbon nanomaterials in various fields. The high demand for the use of such materials has increased due to a sharp increase in the demand for semiconductor materials and materials for supercapacitor electrodes and other electrical devices. Despite the unique physical properties of carbon nanomaterials, there are limitations to their use. To solve this problem, various methods of modifying the surface, both through chemical interactions and physical adsorption, were proposed. One of these methods is chemical modification. The evaluation of effect of chemical treatment parameters on the properties of carbon nanomaterials is an urgent task due to the fact that the chemistry of the processes is poorly understood. In this work, the effect of concentrated sulfuric and nitric acids on the change of specific surface area, elemental composition, composition of functional groups, and also on the change of specific capacitance was considered. It is believed that both the porosity and the functional groups formed during oxidation contribute to the change in specific capacitance. The specific surface area of all samples decreased on average by a factor of 1.5–3 after the chemical treatment. Different oxygen and sulfur-containing functional groups are observed after the chemical treatment. The highest specific capacitance of the treated carbon nanofibers was 114 F/g.
oai:journals.urfu.ru:article/5445
2022-12-12T08:52:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5445
2022-12-12T08:52:03Z
Chimica Techno Acta
Том 9, № 2S (2022): Supplement; 202292S2
Synthesis of 4-hydroxy and 6-hydroxyindoles: a renaissance of the Bischler reaction
Sharapov, A. D.; Ural Federal University
Fatykhov, R. F.; Ural Federal University
Khalymbadzha, I. A.; Ural Federal University
Chupakhin, O. N.; Ural Federal University
2022-04-15 22:01:05
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5445
4-hydroxyindoles; 6-hydroxyindoles; Bischler-Möhlau reaction
en
In the present work we studied a modified Bischler-Möhlau reaction – synthesis of indoles from benzoin and aniline. Our proposed modification of this method differs from that described earlier in that the reaction is carried out at a lower temperature, which makes it possible to improve yields and reduce formation of tarry side products. In addition, unlike the previous contradictory works, which described the preparation of a single 4-hydroxy or 6-hydroxy isomer in condensation of m-aminophenol and benzoin, we obtained both 4-hydroxy and 6-hydroxy isomers.
oai:journals.urfu.ru:article/4655
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4655
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 215-221
Synthesis of meso-2,2’-bipyridyl-substituted calix[4]arenes and their response to metal cations
Moseev, T. D.; Ural Federal University, Ekaterinburg
Khasanov, A. F.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Varaksin, M. V.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Kopchuk, D. S.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Kovalev, I. S.; Ural Federal University, Ekaterinburg
Taniya, O. S.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Rahman, M.; Ural Federal University, Ekaterinburg
Santra, S.; Ural Federal University, Ekaterinburg
Zyryanov, G. V.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Chupakhin, O. N.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Charushin, V. N.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
2020-12-20 23:59:26
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4655
calix[4]arene; 1,2,4-triazines; aza-Diels-Alder reaction; 2,2’-bipyridines; visual cations detection
This work was supported by the Russian Science Foundation (Grants #15-13-10033 and 18-13-00365) and Grants Council of the President of the Russian Federation (no. NSh-2700.2020.3)
en
A convenient synthetic approach to meso-substituted with 2,2’-bipyridine and 1-(pyridin-2-yl)isoquinoline residues calix[4]arenes is reported. This approach involves the reaction of generated in situ 2-lithio-calix[4]arene with 1,2,4-triazine precursor with the following aromatization of the obtained adduct, and the aza-Diels-Alder reaction of the 1,2,4-triazinyl-substituted calix[4]arene with 2,5-norbornadien or in-situ generated 1,2-dehydrobenzene. The UV/fluorescence response of thus obtained meso-pyridyl-substituted calix[4]arenes to metal cations is studied.
oai:journals.urfu.ru:article/6961
2023-11-24T12:17:56Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6961
2023-11-24T12:17:56Z
Chimica Techno Acta
Том 10, № 3 (2023); 202310311
Synthesis and properties of polymer electrolytes based on polyurethane elastomer and lithium salts
Fedorov, Nikita; INSTITUTE OF SOLID STATE CHEMISTRY AND MECHANOCHEMISTRY
Ulihin, Artem; Institute of Solid State Chemistry and Mechanochemistry SB RAS
Uvarov, Nikolai; Institute of Solid State Chemistry and Mechanochemistry SB RAS
2023-08-24 10:02:40
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6961
polymer solid electrolytes; polyurethane elastomer; swelling effect; ionic conductivity; effect of the salt concentration on swelling and conductivity.
en
Polymer solid electrolytes were obtained by swelling the polyurethane elastomer with solutions of lithium salts LiBF4 and LiClO4 in DMSO at different concentration of lithium salt. The swelling effect was found to decrease with the increase in the salt concentration, whereas, the ionic conductivity has a maximum of 6–8·10–4 S/cm at 5 wt.% lithium salt. The salt solutions incorporated into the polymer pores have melting points ranging from –10 to 2 °C and de-swelling takes place at low temperatures. The obtained polyurethane elastomer materials have a high conductivity and may be promising for use in flexible lithium polymer batteries.
oai:journals.urfu.ru:article/5081
2022-03-25T16:11:14Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5081
2022-03-25T16:11:14Z
Chimica Techno Acta
Том 8, № 1 (2021): PCEE-2020 Special Issue; 20218110
Determination of phenolic compounds in medicinal preparations by galvanostatic coulometry
Yaschenko, N. N.; Chuvash State University, Cheboksary
Zhitar, S. V.; Chuvash State University, Cheboksary
Zinovjeva, E. G.; Chuvash State University, Cheboksary
2021-04-13 11:29:15
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5081
galvanostatic coulometry; phenolic compounds; flavonoids
en
In this work, the possibility of using reactions of electrogenerated titrants with phenolic compounds was studied and a method for their coulometric determination in medicaments by galvanostatic coulometry was developed. The research objects were: rutin, salicylic acid and drugs containing phenolic compounds such as «Ascorutin», «Salicylic Paste» and «Salicylic Ointment» of Russian manufacture. Electrogenerated halogens (Cl2, Br2 and I2) and hexacyanoferrate(III)-ions were used as titrants. It was found that for the quantitative determination of phenolic acids, the optimal reagent is electrogenerated bromine, for rutin - electrogenerated bromine and iodine, and for ascorbic acid - any of the studied electrogenerated titrants (Cl2, Br2, I2 and [Fe(CN)6]3-). The correct definition was checked by the «entered-found» method, the error does not exceed 2%. As experimental studies have shown, our method of coulometric titration with electrogenated bromine and iodine is characterized by good reproducibility of results, expression, accuracy and can be used to determine phenolic compounds in drugs, for example, «Ascorutin» tablets. It should be noted that by our procedure it is possible to determine the spectrum of phenol-containing compounds (rutin, ascorbic and salicylic acids) in drugs without their preliminary separation. Therefore, the coulometric method using electrogenerated titrants can be recommended for the determination of salicylic, ascorbic acids and rutin in dosage forms. The proposed method is accurate and eliminates the experiment error in comparison with the Pharmacopoeic method.
oai:journals.urfu.ru:article/3261
2022-12-15T15:21:17Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/3261
2022-12-15T15:21:17Z
Chimica Techno Acta
Том 5, № 2 (2018); 104-108
Structure of the solubility diagram in the Na<sub>2</sub>SO<sub>4</sub>-Na<sub>2</sub>CO<sub>3</sub>-NaHCO<sub>3</sub>-H<sub>2</sub>O system at 0, 25 and 50 °С
Soliev, L.; Tajik State Pedagogical University, Dushanbe
Jumaev, M. T.; Tajik State Pedagogical University, Dushanbe
Turaev, R. O.; Tajik State Pedagogical University, Dushanbe
Makhmadov, H. R.; Tajik State Pedagogical University, Dushanbe
Dzabborov, B. B.; Tajik State Pedagogical University, Dushanbe
2018-07-31 00:18:34
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/3261
solubility; phase equilibria; liquid phase; chemical analysis; crystallo-optical analysis; phase diagram
en
The solubilities in invariant points of Na2SO4-Na2CO3-NaHCO3-H2O system were investigated at 0, 25 and 50 °С. The phase equilibria in the said system were discussed, and phase diagrams at given temperatures were constructed.
oai:journals.urfu.ru:article/5571
2021-12-28T02:27:04Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5571
2021-12-28T02:27:04Z
Chimica Techno Acta
Том 8, № 4 (2021); 20218417
New 2,5-bis(2-ethylhexyl)pyrrolo[3,4-<i>c</i>]pyrrole-1,4(<i>2H,5H</i>)-dione-2,2’-bipyridine-based co-polymer, synthesis, photophysical properties and response to metal cations
Krinochkin, Alexey P.; Ural Federal University;
I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the RAS
Savchuk, Мaria I.; Ural Federal University;
I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the RAS
Starnovskaya, Еkaterina S.; Ural Federal University;
I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the RAS
Nikonov, Igor L.; Ural Federal University;
I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the RAS
Baklykov, Artem V.; Ural Federal University;
I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the RAS
Kudryashova, Ekaterina A.; Ural Federal University
Rybakova, Svetlana S.; Ural Federal University
Ladin, Evgeny D.; Ural Federal University
Kopchuk, Dmitry S.; Ural Federal University;
I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the RAS
Wang, Zhuo; Beijing University of Chemical Technology
Chupakhin, Oleg N.; Ural Federal University;
I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the RAS
2021-12-24 15:39:29
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5571
Sonogashira coupling, polymer, monoazatriphenylene, 3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione, fluorescence, Cu2+ “turn-off” response
en
A new co-polymer based on fragments of 2-(2-pyridyl)monoazatriphenylene and 2,5-bis (2-ethylhexyl)-3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione was prepared by using the Sonogashira reaction. The photophysical properties of the polymer were studied. The presence of a strong bathochromic shift of the absorption and emission maxima in comparison with the previously described monomer units is shown. The polymer exhibits an intense “turn-off” response toward Cu2+ cations.
oai:journals.urfu.ru:article/4807
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4807
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 186-191
Improving the environmental production of electrodes for solar panels
Patianova, A. O.; Chuvash State University, Cheboksary
Ivanova, K. Yu.; Chuvash State University, Cheboksary
Rogozhina, L. G.; Chuvash State University, Cheboksary
Kuzmin, M. V.; Chuvash State University, Cheboksary
Semenov, V. L.; Chuvash State University, Cheboksary
2020-12-14 00:35:57
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4807
flux; lead-free solder; solar panels; electrode; tinning; copper wire; biodegradable aminosiloxanes
Ministry of Education and Science of Russia, Agreement No. 075-11-2019-047
en
Biodegradable aminosiloxanes have been synthesized by the interaction of 3-aminopropyltriethoxysilane with monoethanolamine in the presence of a binary antioxidant and an alkali metal alcoholate. The synthesized compounds were used to develop flux compositions for tinning copper wire and producing electrodes for solar panels. The wetting ability, fluxing activity and biodegradability of the flux were investigated. The possibility of using a flux for hot tinning of copper wire is shown, which makes it possible to increase the environmental friendliness of the production of electrodes for solar panels.
oai:journals.urfu.ru:article/6573
2023-04-10T05:45:25Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6573
2023-04-10T05:45:25Z
Chimica Techno Acta
Том 10, № 1 (2023); 202310109
Electrochemical detection of simple alkanes by utilizing a solid-state zirconia-based gas sensor
Kalyakin, Anatoly S.; Institute of High Temperature Electrochemistry
Volkov, Alexander N.; Institute of High Temperature Electrochemistry
2023-02-14 09:56:04
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6573
alkanes; electrochemical approaches; limiting current; diffusion; amperometric sensors; diffusion barrier
en
Solid-state gas sensors composed of complex oxide electrolytes offer great potential for analyzing various atmospheres at high temperatures. While relatively simple gas mixtures (H2O+N2, O2+N2) have been successfully studied by means of ZrO2-based sensors, the precise detection of more complex compounds represents a challenging task. In this work, we present our findings regarding the analysis of lower alkanes (CH4, C2H6, and C3H8) mixed with nitrogen as an inert gas, utilizing an amperometric ZrO2-based sensor. This sensor, serving as an electrochemical cell with a diffusion barrier, was tested at 500–600 °C to measure the limiting current, which depends on the gas composition and can be further used as a basis for calibration curves. In addition, the diffusion coefficients of the specified gas mixtures were successfully found and compared with references, confirming the applicability of the fabricated sensor for studying diffusion processes in wide concentration and temperature ranges.
oai:journals.urfu.ru:article/4815
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4815
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 233-236
Direct CH/CH functionalization of 1,3-dihydroxy-9H-xanthen-9-one and 1,3-dimethoxy-9H-xanthen-9-one with 1,2,4-triazines and quinazoline
Sharapov, A. D.; Ural Federal University, Ekaterinburg
Fatykhov, R. F.; Ural Federal University, Ekaterinburg
Khalymbadzha, I. A.; Ural Federal University, Ekaterinburg
Chupakhin, O. N.; Ural Federal University, Ekaterinburg
2020-12-21 00:51:07
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4815
сross-dehydrogenative coupling reactions; 1,2,4-triazines; quinazolines; xanthones
Presidential Council on Grants NSh-2700.2020.3 and Ministry of Science and Higher Education of the Russian Federation (project FEUZ-2020-005)
en
An electron-deficient series of 1,2,4-triazines and quinazoline have been used for cross-dehydrogenative coupling with 1,3-dihydroxy and 1,3-dimethoxyxanthones to give stable nucleophilic addition products. The adducts and their subsequent oxidation products were obtained in good yields and the structures of the compounds were confirmed by 1H NMR spectroscopy. These results expand the scope of the methodology of nucleophilic substitution of hydrogen with the participation of xanthones with azines. Moreover, this methodology makes it possible to obtain new organic materials based on xanthones, which have a wide spectrum of biological activity.
oai:journals.urfu.ru:article/1677
2022-12-15T15:10:18Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/1677
2022-12-15T15:10:18Z
Chimica Techno Acta
Том 3, № 1 (2016); 24-29
Влияние фторсодержащих ингибиторов на коррозию меди в атмосферных условиях
Ivanov, M. G.; Уральский федеральный университет, Екатеринбург
Nechaev, A. V.; Уральский федеральный университет, Екатеринбург
Mokrushin, V. S.; Уральский федеральный университет, Екатеринбург
Ostroukhova, O. I.; Уральский федеральный университет, Екатеринбург
2016-03-15 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/1677
polarization curves; polyfluorinated amines; copper wire rods; corrosion inhibitor
en
Методом снятия анодных поляризационных кривых и натурных коррозионных испытаний изучено влияние фторсодержащих ингибиторов на коррозию меди в атмосферных условиях. Введение в состав ингибирующих композиций в качестве замедлителя коррозии меди полифторированных аминов приводит к снижению максимума тока активного растворения меди, что повышает коррозионную стойкость медной катанки при ее транспортировке в различных климатических условиях.
oai:journals.urfu.ru:article/5672
2022-12-12T08:52:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5672
2022-12-12T08:52:03Z
Chimica Techno Acta
Том 9, № 2S (2022): Supplement; 202292S12
Nanoluminofors based on siliсates and germanates of rare earth elements for visualization of biotissues
Zuev, Mikhail G.; Institute of Solid State Chemistry, UB RAS
Il'ves, Vladislav G.; Institute of Electrophysics, UB RAS
Sokovnin, Sergei Yu.; Institute of Electrophysics, UB RAS;
Institute of Physics and Technology, Ural Federal University
2022-07-19 13:06:53
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5672
Er3+; Yb3+; upconversion; nanoluminofor; biotissues; bimodal substances
en
Nanoparticles of silicates and germanates with a general formula Sr2R8–x–yErxYbyM6O26 (R = Y, La; M = Si, Ge) were produced in vacuum by the method of pulse electron beam evaporation. An upconversion photoluminescence of the nanoparticles was detected during the excitation by a laser with a wavelength of 980 nm with a predominance of lines in the red and near infrared regions of the spectrum. Due to their optical properties, the nanoparticles can be excited directly through the biotissues to visualize various pathologies. The obtained nanosamples have K-jumps of X-ray radiation absorption in the 10−100 keV energy region. This opens up prospects for the use of the nanoparticles as X-ray contrast agents. Thus, the nanoparticles have both optical and X-ray contrast characteristics, and therefore have the potential necessary for imaging and diagnosing pathologies in biological tissues.
oai:journals.urfu.ru:article/4802
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4802
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 159-168
Synthetic route optimization of Sumepirin antiepileptic drug candidate
Dzyurkevich, M. S.; Kazan (Volga region) Federal University, Kazan
Shtyrlin, N. V.; Kazan (Volga region) Federal University, Kazan
Shtyrlin, Y. G.; Kazan (Volga region) Federal University, Kazan
2020-12-14 00:21:41
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4802
pyridoxine; synthetic route optimization; scale-up; purification; antiepileptic drug; technology
This work was supported by subsidy allocated to Kazan Federal University for the state assignment in the sphere of scientific activities (project number 0671-2020-0053).
en
In this work we describe the transformation of synthetic route of the antiepileptic drug candidate Sumepirin starting from discovery stage. Initial method included six step process requiring two steps of purification using colon chromatography and has poor overall yield of target compound. The process developed is convenient, scalable, technological and meet the most of conditions of green chemistry. The overall yield was increased up to 62.5% in four steps without colon chromatography purification which allows to obtain the target compound with purity of 99.5+% which is especially important for the active ingredient.
oai:journals.urfu.ru:article/6290
2022-12-22T16:14:24Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6290
2022-12-22T16:14:24Z
Chimica Techno Acta
Том 9, № 4 (2022); 20229422
Sorption analysis of composites based on zinc oxide for catalysis and medical materials science
https://journals.urfu.ru/index.php/chimtech/article/download/6290/14814
Maraeva, Evgeniya; Saint Petersburg Electrotechnical University «LETI»
Radaykin, Dmitriy; Saint Petersburg Electrotechnical University «LETI»
Bobkov, Anton; Saint Petersburg Electrotechnical University «LETI»
Permiakov, Nikita; Saint Petersburg Electrotechnical University «LETI»
Matveev, Vasily; Petersburg Nuclear Physics Institute named by B.P. Konstantinov
Maximov, Alexander; Saint Petersburg Electrotechnical University «LETI»
Moshnikov, Vyacheslav; Saint Petersburg Electrotechnical University «LETI»
2022-11-22 09:57:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6290
zinc oxide; hydroxyapatite; adsorption; specific surface area; catalysis
en
Modified structures based on zinc oxide are of special interest in catalysis and medicine. The work discusses the composite structures based on zinc oxide and hydroxyapatite, as well as silver-modified zinc oxide nanostructures obtained by chemical deposition. The obtained materials were studied using a Rigaku SmartLab diffractometric complex and a Sorbi MS sorption analyzer. The specific surface area was studied and the average size of nanoparticles in the samples is determined. The application scope of the considered materials was catalysis and medicine, including the use in bone engineering as bioactive coatings deposited on the surface of a metal bioimplant.
oai:journals.urfu.ru:article/5882
2022-12-12T08:52:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5882
2022-12-12T08:52:03Z
Chimica Techno Acta
Том 9, № 2S (2022): Supplement; 202292S5
Influence of the micromycete <i>Fusarium culmorum</i> and its antagonists on the state of the antioxidant system of <i>Melissa officinalis L.</i>
Skugoreva, Svetlana; Institute of Biology of Komi Science Centre of the UB RAS
Gushchina, Polina; Vyatka State University
Sharipova, Yana; Vyatka State University
Darovskikh, Larisa; Vyatka State University
2022-05-30 15:37:43
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5882
lemon balm; oxidative stress; antioxidant system; phytopathogens; micromycetes; antagonists
en
In recent years, the popularity of herbal medicine has increased. Lemon balm (Melissa officinalis L.) is a perennial essential oil herb that has been used as a medicinal plant for more than 2 thousand years. It is known that the productivity of plants is directly related to their resistance to phytopathogens, in particular, micromycetes of the genus Fusarium. One of the main mechanisms of plant damage by phytopathogens is oxidative stress. Micromycetes of the genus Trichoderma and soil cyanobacteria (CB) occupy an important place among the natural antagonists of fungi of the genus Fusarium. The aim of the work was to study the state of the antioxidant system of Melissa officinalis L. plants when grown on substrates contaminated with the micromycete Fusarium culmorum and its antagonists – the cyanobacterium Fischerella muscicola and the micromycete Trichodеrma viride. It was found that the presence of the pathogenic micromycete F. culmorum in the soils for growing lemon balm for two months has a stressful effect on lemon balm plants: the intensity of lipid peroxidation, the content of phenolic compounds and the amount of antioxidants in the in plant leaves were significantly higher than in the control. At the same time, at elevated temperatures, the content of phenolic compounds increased, which may be due to increased metabolism and the level of oxidative stress. The introduction of microorganisms-antagonists F. muscicole and T. viride into the soil makes it possible to activate the work of the antioxidant system of plants and reduce the effects of oxidative stress almost to the level of control. The studied antagonists can be recommended as promising for the development of biological products on their basis in order to protect medicinal plants from fusarium diseases.
oai:journals.urfu.ru:article/5433
2022-01-10T15:57:42Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5433
2022-01-10T15:57:42Z
Chimica Techno Acta
Том 8, № 4 (2021); 20218408
Deoxydichlorination of aldehydes catalyzed by Diphenyl sulfoxide
Gorbunova, I. A.; Perm State University
Shipilovskikh, D. A.; Perm National Research Polytechnic University
Shipilovskikh, S. A.; Perm State University; ITMO University
2021-12-03 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5433
aldehydes; Lewis base catalysis; organocatalysis; diphenyl sulfoxide
en
The diphenyl sulfoxide-catalyzed conversion of aldehydes to 1,1-dichlorides is reported. The reaction proceeds via a sulfurous (IV)-catalysis manifold in which diphenyl sulfoxide turnover is achieved using oxalyl chloride as a consumable reagent.
oai:journals.urfu.ru:article/6017
2022-08-29T06:13:28Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6017
2022-08-29T06:13:28Z
Chimica Techno Acta
Том 9, № 3 (2022); 20229313
Chemical-mechanical treatment of potato starch for isolation of nanocrystal particles
Tryakhov, Denis E.; Institute of solid state chemistry and mechanochemistry; Novosibirsk State University
Polytov, Anatoly A.; Institute of solid state chemistry and mechanochemistry; Novosibirsk State University
2022-08-12 09:45:25
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6017
Starch nanocrystals, potato starch, ultrasonic treatment, chemical-mechanical treatment; topochemical hydrolysis of starch granule
en
Starch nanocrystals were isolated by a combination of acid hydrolysis and sonication of native potato starch. The obtained samples were examined by XRD, scanning electron microscopy and static light scattering. An increase in hydrolysis time increases the degree of crystallinity from 47 to 66%. By changing the processing conditions, it is possible to isolate particles of a given size. First, submicron flat particles with dimensions of 3000–5000 nm and a thickness of 80–100 nm are obtained. With longer processing, approximately isometric nanoscale particles remain. Based on the obtained data, a stepwise topochemical mechanism for the formation of starch nanoparticles was proposed.
oai:journals.urfu.ru:article/7121
2024-01-12T19:33:09Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/7121
2024-01-12T19:33:09Z
Chimica Techno Acta
Том 10, № 4 (2023); 202310408
Colloid-chemical properties of surfactant–nitric acid–water systems
Danilin, Lev; Ural Federal University
Lugovitskaya, Tatyana; "Уральский Федеральный университет имени первого Президента России Б.Н.Ельцина"
Kolmachikhina, Elvira; Ural Federal University
Rogozhnikov, Denis; Ural Federal University
2023-11-03 14:51:19
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/7121
nitric acid; surfactants; surface tension; micellization; leaching
en
The behavior of the surfactants Tween 80, SaS and alkyl betaine in aqueous and nitric acid environments as promising additives for nitrate leaching of hard-to-process ore concentrates of non-ferrous metals was studied. The influence of surfactant concentration (0.04–1.28 g/dm3), nitric acid concentration (0.1–10 g/dm3) and temperature (295–343 K) on the surface tension, critical micelle concentration (CMC), pH and optical density of aqueous surfactant solutions and surfactant–HNO3–H2O systems was found. The critical micelle concentration of the surfactants used was estimated. A positive effect of nitric acid on the surface activity of surfactants was discovered, which manifests itself in a decrease in both the CMC and the surface tension at the liquid–gas interface. The values of surface activity and Gibbs energy of surfactant micelle formation in aqueous and nitric acid media were calculated. Associative processes in the solutions and compositions were confirmed by measuring the optical density of the systems under study.
oai:journals.urfu.ru:article/5085
2022-03-25T16:11:14Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5085
2022-03-25T16:11:14Z
Chimica Techno Acta
Том 8, № 1 (2021): PCEE-2020 Special Issue; 20218111
The development of technology for production of zeolites from fly-ash from Troitskaya power plant
Snegirev, V. A.; Ural Federal University, Ekaterinburg
Yurk, V. M.; Ural Federal University, Ekaterinburg
2021-04-16 15:36:19
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5085
fly ash; metals; zeolites; waste treatment; thermal power plant residues
en
The study examines the technology of processing fly ash from Troitskaya power plant for the production of zeolite. The paper presents the results of laboratory studies evaluating the suitability of fly ash from Troitskaya power plant for the production of zeolites and the development of the zeolite production process. Fly ash contains a small amount of heavy metals that can complicate processing, but contains a large amount of silicon oxide. The technology consists of high-temperature alkaline activation of fly ash and hydrochemical synthesis. The resulting powder has a specific surface area of 89.7 m2/g, determined by the BET method, and an average pore diameter of 0.345 μm. The static exchange capacity was 220 mg/g.
oai:journals.urfu.ru:article/3462
2022-12-15T15:21:38Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/3462
2022-12-15T15:21:38Z
Chimica Techno Acta
Том 5, № 3 (2018); 150-152
Два взаимодополняющих синтетических подхода к 3-замещенным, 3,4-дизамещенным и 1-(2-пиридил) – замещенным изохинолинам
Nikonov, I. L.; Ural Federal University, I. Ya. Postovskii Institute of Organic Synthesis, Ekaterinburg
Kopchuk, D. S.; Ural Federal University, I. Ya. Postovskii Institute of Organic Synthesis, Ekaterinburg
Khasanov, A. F.; Ural Federal University, I. Ya. Postovskii Institute of Organic Synthesis, Ekaterinburg
Krinochkin, A. P.; Ural Federal University, I. Ya. Postovskii Institute of Organic Synthesis, Ekaterinburg
Starnovskaya, E. S.; Ural Federal University, Ekaterinburg
Shtaiz, Ya. K.; Ural Federal University, Ekaterinburg
Savchuk, M. I.; Ural Federal University, Ekaterinburg
Tanya, O. S.; Ural Federal University, Ekaterinburg
Zyryanov, G. V.; Ural Federal University, I. Ya. Postovskii Institute of Organic Synthesis, Ekaterinburg
Rusinov, V. L.; Ural Federal University, I. Ya. Postovskii Institute of Organic Synthesis, Ekaterinburg
Chupakhin, O. N.; Ural Federal University, I. Ya. Postovskii Institute of Organic Synthesis, Ekaterinburg
2018-10-28 22:03:43
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/3462
1,2,4-triazines; arynes; enamines; isoqunolines; aza-Diels-Alder reaction; domino-transformation
Russian Science Foundation (Reference # 18-13-00365)
en
Изучены два взаимодополняющих синтетических подхода к 3- и 3,4-дизамещенным 1- (2-пиридил)изохинолинам. Метод, основанный на использовании аринов, был успешно применен для получения соответствующих 3-циано-1-(2-пиридил)изохинолинов в одностадийной/однореакторной процедуре, в то время как он неприемлем для получения других 1-(2-пиридил)изохинолинов. Подход, основанный на применении енаминов, был успешно задействован для синтеза других 1-(2-пиридил)изохинолинов, тогда как для получения 3-циано-1- (2-пиридил)изохинолинов данный метод был неприемлем.
oai:journals.urfu.ru:article/5446
2022-03-20T11:41:02Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5446
2022-03-20T11:41:02Z
Chimica Techno Acta
Том 9, № 1 (2022); 20229101
New molecular complex of ammonium glycyrrhizate with rutin
Yakovishin, L. A.; Sevastopol State University
Ratnikov, V. D.; Sevastopol State University
Bazhan, P. I.; Sevastopol State University
Zaitsev, G. P.; All-Russian National Research Institute of Viticulture and Winemaking “Magarach” of RAS
2022-01-11 10:53:40
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5446
triterpene glycosides; ammonium glycyrrhizate; rutin; molecular complex; antioxidant capacity
en
A new 1:1 molecular complex of triterpene glycoside ammonium glycyrrhizate (GC) with flavonoid glycoside rutin (Rut) was obtained in aqueous ethanol. The stability constant (9.7±0.2)×104 (mol/L)–1 was calculated for the complex via isomolar curves. The complexation was studied by UV- and ATR IR-Fourier spectroscopy and a method of isomolar series. The hydrogen bonds and hydrophobic interactions are formed in the molecular complex. A preliminary antioxidant activity assessment of the complex was made.
oai:journals.urfu.ru:article/4808
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4808
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 192-198
Synthesis and study of complexes of the novel Russian antiviral drug Camphecene with pentacyclic triterpenes of licorice
Khizrieva, S. S.; Southern Federal University, Rostov-on-Don
Vetrova, E. V.; Southern Federal University, Rostov-on-Don
Borisenko, S. N.; Southern Federal University, Rostov-on-Don
Maksimenko, E. V.; Southern Federal University, Rostov-on-Don
Borisenko, N. I.; Southern Federal University, Rostov-on-Don
2020-12-14 00:36:01
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4808
Camphecene; glycyrrhizic acid; glycyrrhetinic acid; antiviral activity; supramolecular complexes
Russian Foundation for Basic Research, grant no. 19-33-90211-Aspiranty
en
For the first time, the complexation of pentacyclic triterpenes of licorice (glycyrrhizic acid (GA) and its aglycone, glycyrrhetinic acid (GLA)) with the novel Russian antiviral drug Camphecene (Camph) was investigated. The complexes obtained at different molar ratios were studied using both UV/Vis spectroscopy and mass spectrometry (ESI MS). Formation of the host:guest complexes were registered: GA and GLA molecular complexes (Camph+2GA; Camph+2GLA) with stability constants К = 6.94 106 М-2 and К = 2.89 106 М-2, respectively. The research results demonstrate a considerable potential of ESI MS as a technique for simple and fast detection of formation of the complexes of GA /GLA and the novel drugs.
oai:journals.urfu.ru:article/6378
2023-08-17T03:09:13Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6378
2023-08-17T03:09:13Z
Chimica Techno Acta
Том 10, № 2 (2023); 202310201
Electrochemical creatinine determination with metal-organic framework catalyst based on copper and acetylenedicarboxylic acid
Okhokhonin, Andrei V.; Ural Federal University
Ibatullina, Alsu A.; Ural Federal University
Izmozherova, Yulia V.; Ural Federal University
Stepanova, Marina I.; Ural Federal University
Matern, Anatoliy I.; Ural Federal University
Kozitsina, Alisa N.; Ural Federal University
2023-03-29 16:58:30
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6378
metal-organic framework; creatinine; voltammetry; Electrochemical catalyst; enzymeless determination
en
Fast and accurate determination of creatinine is critical in kidney function diagnostics. This paper discusses the usage of the metal-organic framework based on copper(II) and acetylenedicarboxylic acid (CuADCA) as a catalyst of electrochemical oxidation of creatinine, glucose and urea. CuADCA was synthesized by deprotonation with triethylamine for the first time. Successful synthesis was confirmed by FTIR and EDS. The material was characterized by SEM, EIS, and CV. CuADCA forms laminated-like flakes with diameter from 1 µm to 20 µm, which is consistent with the polymer-like structure. CV and EIS analyses showed that CuADCA immobilized on GCE acts as a catalyst in electrooxidation reaction of glucose, urea, and creatinine. The sensitivity of creatinine detection, 1057±99 µA/mM, was higher than the detection sensitivity of glucose and urea by more than 100 times with the limit of detection of 2 µM, so CuADCA is a promising material for further development of enzymeless sensors for creatinine.
oai:journals.urfu.ru:article/4768
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4768
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 237-241
8-Hydroxy-5-nitroquinoline as a C-nucleophilic reagent in the reaction of C, C-coupling with quinazoline
Azev, Yuri A.; Ural Federal University, Ekaterinburg
Koptyaeva, Olga S.; Ural Federal University, Ekaterinburg
Eltsov, Oleg S.; Ural Federal University, Ekaterinburg
Tsmokalyuk, Anton N.; Ural Federal University, Ekaterinburg
Pospelova, Tatyana A.; Ural Federal University, Ekaterinburg
2020-12-27 23:21:42
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4768
5-nitro-8-hydroxyquinoline; quinazoline; C, C-coupling
en
The first example of the reaction of 5-nitro-8-hydroxyquinoline as a C-nucleophile with quinazoline is described. As a result of the reaction of C, C-coupling, a stable σ-adduct containing the drug nitroxalin on a heterocyclic carrier was obtained. The structure of the resulting adduct was confirmed by 2D 1H-13C HSQC, 1H-13C HMBC, and 1H-15N HMBC spectra.
oai:journals.urfu.ru:article/1940
2022-12-15T15:10:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/1940
2022-12-15T15:10:03Z
Chimica Techno Acta
Том 3, № 2 (2016); 156-162
Дифференциация 2- и 6- изомеров (2-метиламинопропил)бензофурана методом тандемной масс-спектрометрии
Shevyrin, V. A.; Управление ФСКН России по Свердловской области, Уральский федеральный университет, Екатеринбург
2016-07-23 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/1940
new psychoactive substances; amphetamine derivatives; chromatography – mass spectrometry; high-resolution mass spectrometry; EI spectra; CID spectra
Работа выполнена при финансовой поддержке постановления № 211 Правительства Российской Федерации, контракт № 02.A03.21.0006
en
Достоверная идентификация новых психоактивных соединений 2-(2-метиламинопропил)бензофурана и 6-(2-метиламинопропил)бензофурана проблематична при проведении анализа методом хроматомасс-спектрометрии. Установлено, что эти два изомера могут быть надежно дифференцированы по МС/МС спектрам, полученным в результате диссоциации, индуцируемой соударением, их протонированных молекул.
oai:journals.urfu.ru:article/6014
2022-08-29T06:13:28Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6014
2022-08-29T06:13:28Z
Chimica Techno Acta
Том 9, № 3 (2022); 20229306
Catalytic activity and selectivity of Palladium and Nickel catalysts in hydrogenation reactions of nitro- and acetylene compounds
Jeldybayeva, Indira M.; Al-Farabi Kazakh National University
Kairbekov, Zhaksyntay K.; Al-Farabi Kazakh National University
Kishibayev, Kazhmukan O.; Kazakh National Women’s Teacher Training University
Yermoldina, Elmira T.; Al-Farabi Kazakh National University
Suimbayeva, Saltanat M.; Al-Farabi Kazakh National University
2022-07-26 13:19:34
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6014
hydrogenation; palladium; nickel; catalysts; catalytic activity; selectivity; nitro compounds; acetylene compounds
en
This paper presents the results of a study on the catalytic activity and selectivity of nickel and palladium catalysts in hydrogenation reactions of nitro- and acetylene compounds. It was shown that the activity and selectivity of nickel catalysts in the hydrogenation of phenylacetylene depend on the nature of modifying additives (Cu, Zn, Ti, Cr, Bi, Ti–Cu, Mn, Fe), and the activity and selectivity of palladium catalysts based on a polymer of metal complexes depends on the method of their preparation. It was found that for certain concentrations of the active phase of palladium (0.8 wt.%) and the polymer of potassium humate (1.0 wt.%.) in the catalyst, where palladium and the polymer were deposited on bauxite-094 together, the catalyst exhibits the greatest activity and selectivity when hydrogenating phenylacetylene and potassium orthonitrophenolate.
oai:journals.urfu.ru:article/4803
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4803
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 169-172
Reducing of industrial atmospheric emissions using electrocyclone
Titov, Anatolii; Ural Federal University, Ekaterinburg
Shrimpton, John; University of Southampton, Southampton
Shao, Cheng; Dalian University of Technology, Dalian
Li, Zhuohan; Dalian University of Technology, Dalian
2020-12-14 00:24:13
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4803
gas purification; electrocyclone; cyclone; electrostatic precipitator
en
The article is focused on capturing process-related dust at industrial enterprises (in chemical, metallurgical and energy industries). An electrocyclone can be recommended for the purification of gases emitted into the atmosphere from particulates, such as sodium percarbonate (efficiency 97.5%–99.9%), iron-vanadium concentrate (98.0% - 99.9%), fly ash (99.0%–99.9%). However, the fumes from copper-smelting furnaces cannot be purified with high efficiency (less than 50–60%) because of their properties. Using electrocyclone will reduce the amount of aerosol emissions, and in some cases, let the emission reach the values set by standards.
oai:journals.urfu.ru:article/6317
2022-12-22T16:14:24Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6317
2022-12-22T16:14:24Z
Chimica Techno Acta
Том 9, № 4 (2022); 20229423
Effect of gas-chromatography column regeneration during the CHN/S analysis of copper-chromium disulfide
Troitskaia, Irina B.; Институт неорганической химии им. А.В. Николаева
Syrokvashin, Mikhail M.; Nikolaev Institute of Inorganic Chemistry
Korotaev, Evgeny V.; Nikolaev Institute of Inorganic Chemistry
Saprykin, Anatoly I.; Nikolaev Institute of Inorganic Chemistry
2022-11-22 17:20:11
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6317
CHN/S analysis; chromatography column regeneration; copper-chromium disulfide
The effect of gas-chromatography column (GCC) regeneration during the CHN/S analysis of copper-chromium disulfide CuCrS2 (CCDS) samples on the Euro EA 3000 analyzer was identified. The effect results in a perfect straight baseline on the chromatograms of both CuCrS2 and standard samples. The obtained straight baseline causes high-quality peaks separation. In addition, the reported regeneration procedure reduces significantly the GCC regeneration duration that usually takes up to several days.
oai:journals.urfu.ru:article/5449
2022-12-12T08:52:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5449
2022-12-12T08:52:03Z
Chimica Techno Acta
Том 9, № 2S (2022): Supplement; 202292S7
Determination of optimal parameters technological process of polling of copper wire with alloy POS-61
Aleksandrova, V. V.; Chuvash State University
Kuzmin, M. V.; Chuvash State University
Patianova, A. O.; Chuvash State University
Semenov, V. L.; Chuvash State University
Alexandrov, R. I.; Chuvash State University
2022-06-21 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5449
technological process, alloy, tin, lead, tinning, round copper wire
en
The development of the technique for the manufacture of round copper wire coated with "tin-lead" alloy is considered. The optimal parameters such as the temperature of the "tin-lead" alloy melt, the linear speed for tinning of the wire with a round copper alloy and the diameter of the diamond die were determined. The test results of the experimental wire samples are presented.
oai:journals.urfu.ru:article/5531
2021-12-28T02:27:04Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5531
2021-12-28T02:27:04Z
Chimica Techno Acta
Том 8, № 4 (2021); 20218410
Obtaining cyclopentanone in the presence of metal oxides
Tsvetkova, I. V.; Togliatti State University, Togliatti
Golovanov, A. A.; Togliatti State University, Togliatti
Kondrateva, A. A.; Togliatti State University, Togliatti
Chirkunova, N. V.; Togliatti State University, Togliatti
2021-12-15 16:30:51
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5531
adipic acid, pyrolysis, cyclopentanone, cyclopentene, catalysts, metal oxides
en
The possibility of obtaining cyclopentanone by pyrolysis of calcium adipate at different temperatures was considered. The pyrolysis proceeded with the formation of cyclopentanone and cyclopentene. The use of metal salts and metal oxide catalysts for the dehydrogenation of lower alkanes makes it possible to increase the yields of the target products. The best results were achieved in the presence of a «K-16u» catalyst.
oai:journals.urfu.ru:article/6025
2022-08-29T06:13:28Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6025
2022-08-29T06:13:28Z
Chimica Techno Acta
Том 9, № 3 (2022); 20229314
Influence of alloying (Cr, Fe, Ni) on the corrosion resistance of layers formed by electron-beam processing
Bushueva, Evdokiya; Novosibirsk State Technical University
Turlo, Evgeniy; Novosibirsk State Technical University
Kladieva, Evgeniya; Novosibirsk State Technical University
Sulyaeva, Veronica; Nikolaev Institute of Inorganic Chemistry SB RAS
Pukhova, Elizaveta; Novosibirsk State Technical University
2022-08-12 10:16:14
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6025
stainless steel; corrosion resistance; surface modification; electron beam; metal borides
en
The paper presents the results of comparative analysis of the properties of coatings based on chromium, nickel and iron borides. The alloy obtained in the process of electron-beam surfacing of the powder mixture “amorphous boron – 10 wt.% chromium” has the best properties. This is explained by the structures, fine chromium borides Cr2B and complex iron borides (Fe, Cr)2B, distributed in the austenitic matrix. The material modified in this way in a nitric acid solution corrodes at a rate of 0.02 mm/year. In sulfuric acid, its corrosion rate is 0.81 mm/year.
oai:journals.urfu.ru:article/7122
2024-01-12T19:33:09Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/7122
2024-01-12T19:33:09Z
Chimica Techno Acta
Том 10, № 4 (2023); 202310410
Kinetics of nitric acid leaching of bornite and chalcopyrite
Shklyaev, Yuri; Ural Federal University
Dizer, Oleg; Ural Federal University
Lugovitskaya, Tatiana; Ural Federal University
Golovkin, Dmitry; Ural Federal University
Rogozhnikov, Denis; Ural Federal University
2023-11-16 10:14:53
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/7122
copper; chalcopyrite; bornite; leaching; nitric acid; kinetics
en
The paper presents a study of the process of nitric acid dissolution of the natural minerals chalcopyrite and bornite. The influence of various parameters, including temperature, nitric acid concentration and particle sizes, on this process was examined. Based on the data obtained, the values of apparent activation energy (57.41 and 42.98 kJ/mol for chalcopyrite and bornite, respectively), empirical orders with respect to nitric acid (1.62 and 1.57 for chalcopyrite and bornite, respectively) and with respect to particle size (–1.16 and –2.53 for chalcopyrite and bornite, respectively) were calculated using the shrinking core model. Generalized kinetic equations for the dissolution process of both minerals were derived. Based on the calculations performed, it was suggested that the dissolution processes of chalcopyrite and bornite under these conditions are limited by internal diffusion.
oai:journals.urfu.ru:article/5086
2022-03-25T16:11:14Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5086
2022-03-25T16:11:14Z
Chimica Techno Acta
Том 8, № 1 (2021): PCEE-2020 Special Issue; 20218112
Using the mineral component of building refuse in heavy metals sorption from their mixture
Yurk, V. M.; Ural Federal University, Ekaterinburg; Ecology development of business (Ekologiia Razvitiia Biznesa (ERBi LLC)), Ekaterinburg
Zaytsev, O. B.; Ecology development of business (Ekologiia Razvitiia Biznesa (ERBi LLC)), Ekaterinburg
Zaytseva, A. V.; Ecology development of business (Ekologiia Razvitiia Biznesa (ERBi LLC)), Ekaterinburg
Malahova, N. A.; Ural Federal University, Ekaterinburg
2021-04-16 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5086
contamination; heavy metal; building refuse; soil pollution
en
The sorption properties of the sand-breakstone mixture based on the mineral component of building refuse of the 0-10 mm fraction with respect to Pb2+, Zn2+, Cu2+, Ni2+, Cd2+ and Hg2+ ions were studied using atomic absorption spectroscopy. The mechanisms of accumulation of heavy metal ions on the surface of the mixture particles are described. It was found that after washing the contaminated material distilled water, the residual concentration of metals in the filtrate does not exceed the established sanitary and hygienic standards. The practical value of the work lies in the possibility of applying the results in reclamation of technogenic formations or production of materials for the technical stage of reclamation using technogenic soils.
oai:journals.urfu.ru:article/4448
2022-12-15T15:15:59Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4448
2022-12-15T15:15:59Z
Chimica Techno Acta
Том 7, № 2 (2020); 81-86
Technology for the industrial production of K3 series vitamins based on menadione
Antipov, Aleksey S.; LLC “Novokhrom”, 462353, 51 Industrial St., Novotroitsk, Orenburg region
Nizov, Vasily A.; Ural Federal University, Ekaterinburg
Antipova, Anna Yu.; LLC “Novokhrom”, 462353, 51 Industrial St., Novotroitsk, Orenburg region; Ural Federal University, Ekaterinburg
2020-06-29 17:40:48
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4448
Vitamin K3; methyl-naphalenes; Cr(VI)-compounds; menadione; industrial scale
en
An improved technology for the industrial production of K3 series vitamins based on menadion is reported. The procedure involves the Cr(VI)-promoted oxidation of the corresponding methyl-naphtahelenes with the following purification by precipitation/recrystallization. The best results were obtained under the process temperature between 20-40 °C, solution pH after dilution of MNB in a range of 5.5–5.7, and MNB content in initial solution of 25-30%.
oai:journals.urfu.ru:article/5477
2022-03-20T11:41:02Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5477
2022-03-20T11:41:02Z
Chimica Techno Acta
Том 9, № 1 (2022); 20229103
Features of -C-C- coupling of quinoxaline-2-one with ethyl acetoacetate under acid catalysis
Azev, Y. A.; Ural Federal University
Koptyaeva, O. S.; Уральский Федеральный университет им. первого Президента России Б. Н. Ельцина
Mkrtchan, A. A.; Ural Federal University
Pospelova, T. A.; Ural Federal University
2022-01-14 23:18:29
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5477
quinoxaline-2-one; ethyl acetoacetate; nucleophilic substitution of hydrogen; vicarious substitution; acid catalysis
en
Quinoxalin-2-one (1) reacts with ethyl acetoacetate in trifluoroacetic acid (TFA) to form 3-(2-oxopropylideno)-3,4-dihydroquinoxaline-2-one (2) and 3-(3-oxo-3,4- dihydroquinoxaline-2-(1H)-ylidene)methylquinoxaline-2-(1H)-one (3). The reaction product 3 was also obtained by heating the compound 1 with acetone in the presence of TFA.
oai:journals.urfu.ru:article/4809
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4809
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 199-203
Synthesis and research of polyfunctional silicon-containing amines – new promoters of adhesion
Ivanova, K. Yu.; Chuvash State University, Cheboksary
Kuzmin, M. V.; Chuvash State University, Cheboksary
Kol’tsov, N. I.; Chuvash State University, Cheboksary
2020-12-14 00:36:05
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4809
3-aminopropyltriethoxysilane; aminoalkoxysiloxanes; adhesion promoters
en
Currently, in order to obtain high-tech hybrid products, modern adhesives have high requirements for creating strong joints between dissimilar materials. It is known that adhesion depends on the compatibility of the adhesives with the surfaces of the materials. Amine compounds are the main hardeners for epoxy compositions. That is why, in this article, we synthesized silicon-containing amines based on polyfunctional aminoalkoxysiloxanes for epoxy compositions. Aminoalkoxysiloxanes were prepared by the interaction of 3-aminopropyltriethoxysilane with monoethanolamine in nitrogen at atmospheric pressure in the presence of a binary antioxidant and catalytic amounts of an alkali metal alcoholate. During the reaction in a homogeneous phase, the reaction mixture was heated to a temperature of 100-110 °C and distilled off to 90% of ethanol from the theoretically calculated amount. Further, the reaction was carried out at a reduced temperature of 10-20 mmHg pressure until the release of alcohol stops. At the same time, gravimetric control was carried out and the refractive index of the reaction mixture was measured. As a result, aminoalkoxysilanes were obtained in the form of light-yellow oily liquids. The structure of the obtained compounds was investigated by IR spectroscopy on an FSM-1202 Fourier spectrophotometer and 1H NMR spectroscopy on a high-resolution BrukerWM-250 NMR spectrometer. It was found that under the selected synthesis conditions, aminopropyltri-(2-aminoethoxy)silane is obtained with the highest yield of 97.6% at a molar ratio of 3-aminopropyltriethoxysilane AGM-9 with monoethanolamine 1:3.
oai:journals.urfu.ru:article/6620
2023-08-17T03:09:13Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6620
2023-08-17T03:09:13Z
Chimica Techno Acta
Том 10, № 2 (2023); 202310204
(Mechano)synthesis of azomethine- and terpyridine-linked diketopyrrolopyrrole-based polymers
https://journals.urfu.ru/index.php/chimtech/article/download/6620/15832
Al-Ithawi, Wahab K. A.; Ural Federal University; University of Technology-Iraq
Khasanov, Albert F.; Ural Federal University
Valieva, Maria I.; Ural Federal University; I. Ya. Postovsky Institute of Organic Synthesis UB RAS
Baklykov, Artem V.; Ural Federal University; I. Ya. Postovsky Institute of Organic Synthesis UB RAS
Chistiakov, Konstantin A.; Ural Federal University; I. Ya. Postovsky Institute of Organic Synthesis UB RAS
Ladin, Evgeny D.; Ural Federal University
Kovalev, Igor S.; Ural Federal University
Nikonov, Igor L.; Ural Federal University; I. Ya. Postovsky Institute of Organic Synthesis UB RAS
Kim, Grigory A.; Ural Federal University; I. Ya. Postovsky Institute of Organic Synthesis UB RAS
Platonov, Vadim A.; Ural Federal University
Kopchuk, Dmitry S.; Ural Federal University; I. Ya. Postovsky Institute of Organic Synthesis UB RAS
Wang, Zhuo; Beijing University of Chemical Technology
Zyryanov, Grigory V.; Ural Federal University; I. Ya. Postovsky Institute of Organic Synthesis UB RAS
2023-04-07 11:03:08
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6620
diketopyrrolopyrrole-based polymers; Pd-catalyzed synthesis; mechanosynthesis; NIR emission
en
Three efficient synthetic approaches towards new azomethine- and terpyridine-containing 2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (diketopyrrolopyrrole, DPP) based polymers, such as P1 and P2, are reported. The first approach involves the Pd-catalyzed synthesis via two- or three-component Suzuki or Stille cross-coupling reaction in solution. The second approach involves Pd-catalyzed Suzuki cross-coupling reaction under ball-milling conditions. And, finally, the third approach involves Pd-free condensation reaction under ball-milling conditions. The newly obtained polymers exhibited absorbance around 700 nm and emission around 900 nm, and, thus, these polymers are considered to be NIR-fluorophores.
oai:journals.urfu.ru:article/4866
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4866
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 242-249
Relevance of application of irradiated starter cultures to production of fermented milk products
Zhuravleva, D. A.; Ural Federal University, Yekaterinburg
Kazakov, A. V.; Ural State University of Economics, Yekaterinburg
Selezneva, I. S.; Ural Federal University, Yekaterinburg
Baranova, A. A.; Ural Federal University, Yekaterinburg
2020-12-28 01:14:17
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4866
fermented milk products; probiotic microorganisms; secondary metabolites; ionizing radiation
en
Nowadays yogurt, fermented milk products, enriched with biologically active substances, acquire increasingly important significance in people's diets. The traditional method for producing fermented milk products and yogurt is to ferment the milk using starter cultures. The purpose of this research was to figure out if it is possible to use suspensions of probiotic microbial cultures irradiated with ionizing radiation to produce yoghurt products. Liquid live suspensions of bifidobacteria and lactobacilli, as well as a mixture of bifidobacteria, lactobacilli, propionibacteria and lactic acid streptococci were taken as a research model. The goal was achieved by receiving the yoghurt products enriched with active secondary metabolites due to using the suspensions of lysed cells of different microorganisms. We studied physico-chemical and organoleptic properties of the received products after 1, 7 and 14 days of storage.
oai:journals.urfu.ru:article/2342
2022-12-15T15:22:51Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/2342
2022-12-15T15:22:51Z
Chimica Techno Acta
Том 4, № 1 (2017); 25-28
Комбинаторный подход к синтезу 1,2,4-триазинов
Kozhevnikov, D. N.; ЗАО Научно-производственный холдинг "ВМП", Екатеринбург
Kozhevnikov, V. N.; Университет Нортумбрии, Ньюкасл
2017-05-30 01:53:03
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/2342
nucleophiles; nitrile group; 1,2,4-triazines
en
Статья описывает удобный и легкий метод замещения нитрильной группы в 5-циано-1,2,4-триазинах с целью получения библиотеки замещенных 1,2,4-триазинов (около 500 соединений).
oai:journals.urfu.ru:article/5990
2022-08-29T06:13:28Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5990
2022-08-29T06:13:28Z
Chimica Techno Acta
Том 9, № 3 (2022); 20229307
Development of technology for deposition of thick copper layers onto ceramic substrates applied in power electronics
Nepochatov, Yuri K.; HC PJSC NEVZ–Soyuz
Pletnev, Pyotr M.; Siberian State Transport University
Kosarev, Vladimir F.; Institute of Theoretical and Applied Mechanics SB RAS
Gudyma, Tatiana S.; Novosibirsk State Technical University
2022-07-26 13:21:35
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5990
ceramics; metallization coating; aluminum nitride; copper; adhesion
en
The basic element of the design of a power module is a metallized ceramic substrate. In this work, the formation of metallization coatings by the method of thermal transfer of metallization pastes (Mo-Mn-Si + binder) for alumina and aluminum nitride ceramics was carried out. The fixing of the metallization coating on the ceramic substrate was performed by firing at a temperature of 1320 °C. The subsequent deposition of the copper layer was carried out by the method of cold gas-dynamic spraying (CGDS) followed by annealing of the deposited coating. For high-quality adhesion, the optimum annealing temperature was 1000 °C.
oai:journals.urfu.ru:article/5558
2021-12-28T02:27:04Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5558
2021-12-28T02:27:04Z
Chimica Techno Acta
Том 8, № 4 (2021); 20218411
Synthesis of highly stable luminescent molecular crystals based on (<i>E</i>)-2-((3-(ethoxycarbonyl)-5-methyl-4-phenylthiophen-2-yl)amino)-4-oxo-4-(<i>p</i>-tolyl)but-2-enoic acid
Zhestkij, N. A.; ITMO University
Gunina, E. V.; ITMO University
Fisenko, S. P.; A. V. Luikov, Heat and Mass Transfer Institute, NASB
Rubtsov, A. E.; Perm State University
Shipilovskikh, D. A.; Perm National Research Polytechnic University
Milichko, V. A.; ITMO University; Universite de Lorraine
Shipilovskikh, S. A.; ITMO University; Perm State University
2021-12-15 18:47:17
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5558
organic molecular crystal; photoluminescence; structure rigidity; substituted 2,4-dioxobutanoic acids; Gewald thiophenes
en
The synthesis of (E)-2-((3-(ethoxycarbonyl)-5-methyl-4-phenylthiophen-2-yl)amino)-4-oxo-4-(p-tolyl)but-2-enoic acid was performed. This organic compound was used as a building block for the organic molecular crystals with highly stable photoluminescence at ambient conditions, which has been established during 10 years of exploitation.
oai:journals.urfu.ru:article/4804
2022-12-15T15:17:08Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4804
2022-12-15T15:17:08Z
Chimica Techno Acta
Том 7, № 4 (2020): MOSM2020 Special Issue; 173-176
Using the profiled elements to increase electrocyclone effectiveness
Trinkunas, Anton; Ural Federal University, Ekaterinburg
Pomortseva, Lidia; Ural Federal University, Ekaterinburg
Titov, Anatolii; Ural Federal University, Ekaterinburg
Rusinova, Zalina; Ural Federal University, Ekaterinburg
2020-12-14 00:24:34
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4804
gas treatment; re-entrainment; shaped elements; electrocyclone
en
The article is devoted to flue gas cleaning, using fly ash as an example. Electrocyclone can be employed as gas-cleaning equipment. The electrocyclone operation can be intensified by reducing re-entrainment. The laboratory model of the annular channel of the electrocyclone is used to show the possibility of reducing re-entrainment by using the shaped elements of various designs on the collecting electrodes. Aerosol industrial emissions can be reduced by using an electrocyclone with modified collecting electrodes.
oai:journals.urfu.ru:article/6321
2022-12-22T16:14:24Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6321
2022-12-22T16:14:24Z
Chimica Techno Acta
Том 9, № 4 (2022); 20229425
Electrophoretic deposition of YSZ layers on pyrolytic graphite and a porous anode substrate based on NiO-YSZ
https://journals.urfu.ru/index.php/chimtech/article/download/6321/14858
Solovev, Artem V.; Ural Federal University
Starostin, Georgy N.; Ural Federal University; Institute of High Temperature Electrochemistry
Zvonareva, Inna A.; Ural Federal University; Institute of High Temperature Electrochemistry
Tulenin, Stanislav S.; Ural Federal University
Markov, Vyacheslav F.; Ural Federal University; Ural Institute of the State Fire Service of the Ministry of Emergency Situations of Russia
2022-12-09 13:18:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6321
zirconium dioxide; yttrium oxide; hydrogen energy; solid oxide fuel cell; electrophoretic deposition; YZS
en
Solid oxide fuel cells are promising hydrogen energy devices. The goal of this research was to create ceramic layers for SOFCs based on yttria-stabilized zirconia (YSZ) and to investigate their parameters. YSZ ceramic layers with a thickness of 5.14 μm on a porous NiO–YSZ substrate and 7 μm on pyrolytic graphite were obtained by electrophoretic deposition. X-ray diffraction and electron microscopy were used to determine the composition, structure, and morphological features of ceramic layers. The effects of the substrate's nature, the degree of dispersion of the initial YSZ powder, and the heat treatment conditions on the properties of the ceramic layer YSZ were considered.
oai:journals.urfu.ru:article/5736
2022-12-12T08:52:03Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5736
2022-12-12T08:52:03Z
Chimica Techno Acta
Том 9, № 2S (2022): Supplement; 202292S8
Phytoextraction of toxic elements by <i>Amaranthus Tricolor</i> grown on technogenically polluted soils in open ground conditions
Gorelova, Svetlana V.; Tula State University
Gins, Murat S.; Peoples' Friendship University of Russia;
Federal State Budgetary Scientific Institution “Federal Scientific Vegetable Center”
Frontasyeva, Marina V.; Joint Institute for Nuclear Research
2022-06-21 00:00:00
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5736
amaranth; Amaranthus tricolor, soil pollution; heavy metals; transfer factor; phytoremediation
en
Using the INAA method, the ability of Amaranthus tricolor L. variety “Valentina” growing on soils with different degree of pollution to extract heavy metals was evaluated in the field experiments. It was found that amaranth of the studied variety characterized by the content of betacianin pigment, amaranthine, in the shoots and generative organ, is able to accumulate elements such as Mn, Fe and Ni from soils. The content of most of the studied elements decreases in the following order: leaves > inflorescences > stems. Under conditions of soil pollution with emissions from metallurgical plant, the phytoextraction of such elements as Mn, Fe, Co, Sb increases. The content of Fe and Mn in the leaves of A. tricolor var. “Valentina” exceeds the average data for vegetation from 7 to 17 times; the Co content exceeds the average data for vegetable from 4 to 7 times; the Sb content in the leaves exceeds the average data for vegetable from 10 to 23 times. Due to the fact that amaranth forms a sufficient biomass for the growing season, it can be recommended for phytoextraction of heavy metals from soils in case of polymetallic pollution.
oai:journals.urfu.ru:article/6103
2022-12-22T16:14:24Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/6103
2022-12-22T16:14:24Z
Chimica Techno Acta
Том 9, № 4 (2022); 20229413
Investigation of physical and chemical parameters of the raw hydrocarbon material base of Kaliningrad region for the concept development of an oil refinery
Shcherban, Pavel; I. Kant Baltic Federal University
Masyutin, Yakov; I. Kant Baltic Federal University
Vatagina, Anna; I. Kant Baltic Federal University
Belova, Margarita; I. Kant Baltic Federal University
Stolyarenko, Alexander; I. Kant Baltic Federal University
2022-09-13 16:15:17
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/6103
oil quality; fractional composition; refinery design; regional energy security; physical and chemical oil analysis
en
The article analyzes the factors that determine the necessity of oil refinery construction in the Kaliningrad region of the Russian Federation. The assessment of the existing and prospective raw material base is performed. The data for the development of the feasibility study for an oil refinery construction are formed and analyzed. Taking into account the outdated data on the parameters of hydrocarbon raw materials produced in the region, as well as significant changes in the raw material base due to the tendency to develop offshore, rather than continental, fields the physical and chemical parameters of the oil fields of the Kaliningrad region are investigated for the possibility of their further use in oil refining in order to obtain high-quality gasoline and diesel fuel. The laboratory studies of oil samples on viscosity, density, fractional composition, content of sulfur, chloride salts, mechanical impurities, water, and flash point determination are carried out on the basis of the Russian state standards. The different variants of the refinery layouts are analyzed, considering the available raw material base. Taking into account the initial data obtained, a preliminary pre-design study of the technological scheme and the refinery mass balance is carried out and presented in the article.
oai:journals.urfu.ru:article/7229
2024-01-12T19:33:09Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/7229
2024-01-12T19:33:09Z
Chimica Techno Acta
Том 10, № 4 (2023); 202310419
Novel direct synthetic route of 2D Prussian Blue analogue, nanocrystalline CuHCF, as highly effective cathode materials for Zn-ion supercapacitors
Kaneva, Maria V.; Ioffe Institute
Bachina, Anastasia K.; Ioffe Institute
Lobinsky, Artem A.; Ioffe Institute
2023-12-31 23:58:10
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/7229
Prussian blue analogue; transition metals; 2D crystals; cathode materials; supercapacitors
en
Prussian blue analogues (PBAs) with 2D morphology of nanocrystals have attracted much attention for aqueous electrolyte-based energy storage devices. In this study, we synthesized a 2D Prussian blue analogue, nanocrystals of copper hexacyanoferrate (CuHCF), via a facile stepwise route involving a modified copper substrate of Cu(OH)2 nanorods that was used for the formation of two-dimensional CuHCF crystals. These materials were characterized by powder X-ray diffraction, energy dispersive X-ray microanalysis, X-ray photoelectron spectroscopy and scanning electron microscopy. The cathode based on 2D CuHCF exhibits high specific capacity (240 F/g (63.9 mAh/g) at 0.1 A/g) with excellent cycling stability (98.5% retention after 1000 charge-discharge cycles) in 3 M ZnSO4 electrolyte. The flat two-dimensional morphology of CuHCF provides sufficient ion diffusion channels and the numerous electroactive interfaces for intercalation charge storage.
oai:journals.urfu.ru:article/5091
2021-08-25T07:12:26Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/5091
2021-08-25T07:12:26Z
Chimica Techno Acta
Том 8, № 2 (2021); 20218208
Detection of Anti-viral Drug Riamilovir and Herbicides in Aqueous Media by Using Pyrene-based Fluorescent Chemosensors
Kovalev, I. S.; Ural Federal University, Yekaterinburg
Sadieva, L. K.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Taniya, O. S.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Kopchuk, D. S.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Zyryanov, G. V.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Ulomsky, E. N.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Rusinov, V. L.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
Chupakhin, O. N.; Ural Federal University, Yekaterinburg; Postovsky Institute of Organic Synthesis, Yekaterinburg
2021-05-20 18:42:03
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/5091
COVID-19; Riamilovir (Triazavirin ®); DNOC; detection in aqueous media; chemical sensors; pyrene-based fluorophores; fluorescence quenching
This work was supported by the Russian Foundation for Basic Research (Project # 19-33-90155)
en
Two ethyleneglycol esters of 1-pyrene carboxylic acid were studied as chemosensors for the fluorescence “turn-off” detection of two nitro-containing analytes, such as antiviral drug Riamilovir (Triazavirin ®) and herbicidal agent dinitro-ortho-cresol (DNOC). In both cases the dramatic fluorescence quenching was observed with quenching constants as high as 3·104 M-1 and limits of detection (LOD) as low as 100 ppb.
oai:journals.urfu.ru:article/4593
2022-12-15T15:16:26Z
chimtech:L
v2
https://journals.urfu.ru/index.php/chimtech/article/view/4593
2022-12-15T15:16:26Z
Chimica Techno Acta
Том 7, № 3 (2020); 104-108
Direct synthesis of 5-arylethynyl-1,2,4-triazines via direct CH-functionalization
Savchuk, M. I.; Ural Federal University, Ekaterinburg
Starnovskaya, E. S.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Shtaitz, Y. K.; Ural Federal University, Ekaterinburg
Krinochkin, A. P.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Kopchuk, D. S.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Santra, S.; Ural Federal University, Ekaterinburg
Rahman, M.; Ural Federal University, Ekaterinburg
Zyryanov, G. V.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Rusinov, V. L.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
Chupakhin, O. N.; Ural Federal University, Ekaterinburg; I.Ya. Postovsky Institute of Organic Synthesis of RAS, Ekaterinburg
2020-09-01 19:04:41
Статьи журнала Chimica Techno Acta распространяются в соответстсвии с лицензией Creative Commons Attribution, позволяющей их копирование, распространение и использование, в том числе коммерческое, при обязательном указании авторства (т.е. статья должна быть процитирована). Таким образом, в рамках указанной лицензии авторские права сохраняются за авторами статей.
url:https://journals.urfu.ru/index.php/chimtech/article/view/4593
C-H-Functionalization, 1,2,4-triazines; acetylenes lithium salts; 5-arylethynyl-1,2,4-triazines
Russian Science Foundation (Grant # 19-73-10144)
en
An efficient synthetic approach towards 5-arylethynyl-1,2,4-triazines via direct C-H-functionalization of 5-H-1,2,4-triazines in reaction with lithium acetylenes is reported.