排序方式: 共有6条查询结果,搜索用时 15 毫秒
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E. V. Petrova T. I. Izaak D. A. Filonenko A. P. Astashkina V. I. Otmakhov G. G. Volokitin 《Colloid Journal》2007,69(6):777-781
Peculiarities of the extraction of metal ions from aqueous solutions by fibrous polypropylene have been investigated. It has been found that metal ion adsorption proceeds owing to the existence of a gas-liquid-hydrophobic polymer boundary line. The process mechanism has been discussed. 相似文献
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O. I. Gladunova V. A. Lysenko O. V. Astashkina A. A. Lysenko V. N. Dokuchaev 《Russian Journal of General Chemistry》2013,83(1):164-168
A method of increasing the oxygen index (OI) of polyoxadiazole fibers by introducing fire retardant nano(micro)-additives into the polymer before the fiber formation is presented. The following additives are studied: dicarboxydiphenyl oxide, brominated and chlorinated phthalocianines, and carbon black. The use of these additives in the amount of 2–5% of the polymer weight in spinning solutions makes it possible to produce fibers with OI of up to 34 % and thermal stability of up to 84%. 相似文献
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D. A. Lomov M. G. Abramyants N. V. Astashkina N. I. Korotkikh S. V. Gres’ko 《Russian Journal of Organic Chemistry》2014,50(7):1039-1042
Aromatization of 4-aryl(hetaryl)tetrahydroimidazo[4,5-c]pyridine-6-carboxylic acids and their lithium salts by the action of dimethyl sulfoxide has been revealed for the first time. Heating of these compounds in DMSO for 5–7 h at 90–95°C leads to the formation of 4-aryl(hetaryl)imidazo[4,5-c]pyridine derivatives as a result of dehydrogenation and decarboxylation. Heating of the corresponding lithium salts generated in situ (DMSO, 90–95°C, 3–5 h) affords difficultly accessible 4-aryl(hetaryl)imidazo[4,5-c]pyridine-6-carboxylic acids. 相似文献
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Yutilov Yu. M. Smolyar N. N. Astashkina N. V. 《Russian Journal of Organic Chemistry》2002,38(3):419-423
Reduction of 1-substituted [1,2,3]triazolo[4,5-c]pyridines with nickel-aluminum alloy in aqueous alkali gave 2-azaspinaceamines. Reduction of imidazo[4,5-c]pyridine and [1,2,3]triazolo[4,5-c]pyridine derivatives with formic acid in the presence of triethylamine resulted in formation of 5-formylspinaceamines and 2-azaspinaceamines. The 5-formyl group in the latter can be removed by acid hydrolysis. Unsubstituted 2-azaspinaceamine, an aza analog of natural spinaceamine, was synthesized for the first time. 相似文献
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