Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216411.6442
S. Makarov, P. A. Molodtsov, Ilia A. Dereven’kov, E. Naidenko
{"title":"INTERACTION OF SODIUM SELENITE WITH SODIUM HYDROXYMETHANESULFINATE AND THIOUREA DIOXIDE IN AQUEOUS SOLUTIONS","authors":"S. Makarov, P. A. Molodtsov, Ilia A. Dereven’kov, E. Naidenko","doi":"10.6060/ivkkt.20216411.6442","DOIUrl":"https://doi.org/10.6060/ivkkt.20216411.6442","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80811525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216412.8y
G. Kvashnin, D. Ovsyannikov, B. Sorokin, M. Popov
{"title":"INVESTIGATION OF ELASTIC PROPERTIES AND HARDNESS OF NANOSTRUCTURED CARBON MATERIALS","authors":"G. Kvashnin, D. Ovsyannikov, B. Sorokin, M. Popov","doi":"10.6060/ivkkt.20216412.8y","DOIUrl":"https://doi.org/10.6060/ivkkt.20216412.8y","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87336209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216411.6408
Roman N. Meretin, Tatiana E. Nikiforova
В настоящей работе изучен новый эффективный сорбент, полученный путем термической обработки рисовой лузги. Представлены результаты элементного (EDX) анализа образца сорбента. С целью объяснения и прогнозирования химического поведения сорбента и его реакционной способности в отношении ионов тяжелых металлов, исследован функциональный состав данного сорбента методами потенциометрического титрования и ИКспектроскопии. Установлено, что полученный сорбент представляет собой гетерофункциональный полиэлектролит, содержащий кислотные центры различных типов. В нем присутствуют сорбционно-активные группы, оставшиеся от исходной лузги, а также принадлежащие углю и кремнезему. На поверхности сорбента обнаружены карбоксильные группы, спиртовые и фенольные гидроксилы, силанольные и другие функциональные группы, которые выступают в роли активных центров сорбции. Эти центры сорбции могут находиться в сорбенте в виде реакционноспособных фрагментов частично разложившихся органических соединений: целлюлозы, гемицеллюлозы и лигнина. Кроме того, в составе исследуемого образца сорбента выявлено значительное количество диоксида кремния, проявляющего химическую активность по отношению к полярным и ионным соединениям. Функциональные группы сорбента, обнаруженные в результате обработки pK-спектра, в целом, соотносятся с результатами ИК-спектроскопии. Определена общая кислотность сорбента. В рамках проделанной работы изучены его сорбционные свойства по отношению к ионам меди (II) и цинка (II). Установлено, что в процессе сорбции ионов металлов данным сорбентом pH водного раствора снижается, что указывает на ионообменный характер сорбции. Обнаружено, что изменение кислотности среды в процессе сорбции зависит от начальной концентрации ионов металлов в растворе.
{"title":"INVESTIGATION OF THE REACTIVITY OF THE SURFACE OF A CARBON-CONTAINING SILICATE SORBENT OF PLANT ORIGIN","authors":"Roman N. Meretin, Tatiana E. Nikiforova","doi":"10.6060/ivkkt.20216411.6408","DOIUrl":"https://doi.org/10.6060/ivkkt.20216411.6408","url":null,"abstract":"В настоящей работе изучен новый эффективный сорбент, полученный путем термической обработки рисовой лузги. Представлены результаты элементного (EDX) анализа образца сорбента. С целью объяснения и прогнозирования химического поведения сорбента и его реакционной способности в отношении ионов тяжелых металлов, исследован функциональный состав данного сорбента методами потенциометрического титрования и ИКспектроскопии. Установлено, что полученный сорбент представляет собой гетерофункциональный полиэлектролит, содержащий кислотные центры различных типов. В нем присутствуют сорбционно-активные группы, оставшиеся от исходной лузги, а также принадлежащие углю и кремнезему. На поверхности сорбента обнаружены карбоксильные группы, спиртовые и фенольные гидроксилы, силанольные и другие функциональные группы, которые выступают в роли активных центров сорбции. Эти центры сорбции могут находиться в сорбенте в виде реакционноспособных фрагментов частично разложившихся органических соединений: целлюлозы, гемицеллюлозы и лигнина. Кроме того, в составе исследуемого образца сорбента выявлено значительное количество диоксида кремния, проявляющего химическую активность по отношению к полярным и ионным соединениям. Функциональные группы сорбента, обнаруженные в результате обработки pK-спектра, в целом, соотносятся с результатами ИК-спектроскопии. Определена общая кислотность сорбента. В рамках проделанной работы изучены его сорбционные свойства по отношению к ионам меди (II) и цинка (II). Установлено, что в процессе сорбции ионов металлов данным сорбентом pH водного раствора снижается, что указывает на ионообменный характер сорбции. Обнаружено, что изменение кислотности среды в процессе сорбции зависит от начальной концентрации ионов металлов в растворе.","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90425048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216411.6518
A. Okhlobystin, A. Kamyshnikova, K. V. Oleinikova, V. N. Storozhenko, K. P. Pashchenko, N. Berberova
{"title":"THEORETICAL AND EXPERIMENTAL STUDY OF THE ADSORPTION CAPACITY OF TRANSITION METAL ACETATES IN THE PROCESS OF DESULFURIZATION OF A MODEL HYDROCARBON FUEL","authors":"A. Okhlobystin, A. Kamyshnikova, K. V. Oleinikova, V. N. Storozhenko, K. P. Pashchenko, N. Berberova","doi":"10.6060/ivkkt.20216411.6518","DOIUrl":"https://doi.org/10.6060/ivkkt.20216411.6518","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73664363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216412.5y
S. Urvanov, E. A. Pushina, N. V. Kazennov, V. Mordkovich
{"title":"PREPARATION OF COMPOSITE THREADS AND HOLLOW CERAMIC FIBERS BASED ON CARBON FIBRE AND ALUMINUM OXIDE","authors":"S. Urvanov, E. A. Pushina, N. V. Kazennov, V. Mordkovich","doi":"10.6060/ivkkt.20216412.5y","DOIUrl":"https://doi.org/10.6060/ivkkt.20216412.5y","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78807548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216412.6506
Y. Suvorova, E. Petukhova, M. V. Dmitriev, E. Danilova, V. V. Aleksandriiskii
{"title":"Bisthiadiazoleamines: synthesis, structure and properties","authors":"Y. Suvorova, E. Petukhova, M. V. Dmitriev, E. Danilova, V. V. Aleksandriiskii","doi":"10.6060/ivkkt.20216412.6506","DOIUrl":"https://doi.org/10.6060/ivkkt.20216412.6506","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76821078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216408.6346
A. Makarova, A. Fedoseev, E. G. Vinokurov
{"title":"Study of mechanochemical reactions of immobilization of mercury from solid waste","authors":"A. Makarova, A. Fedoseev, E. G. Vinokurov","doi":"10.6060/ivkkt.20216408.6346","DOIUrl":"https://doi.org/10.6060/ivkkt.20216408.6346","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79259402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216412.4y
S. Perfilov, M. V. Vorobieva, I. Evdokimov, R. Lomakin, I. Pakhomov, Andrei A. Pozdnyakov
{"title":"STUDYING THE INFLUENCE OF THE INITIAL DIAMOND RAW MATERIALS PROPERTIES ON THE POLYCRYSTALLINE DIAMOND MATERIALS PROPERTIES","authors":"S. Perfilov, M. V. Vorobieva, I. Evdokimov, R. Lomakin, I. Pakhomov, Andrei A. Pozdnyakov","doi":"10.6060/ivkkt.20216412.4y","DOIUrl":"https://doi.org/10.6060/ivkkt.20216412.4y","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81105566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216411.6402
M. Sokolov, N. M. Kuznetsov, S. Belousov, S. Chvalun
{"title":"EFFECT OF THE DISPERSION MEDIUM VISCOSITY ON THE ELECTRORHEOLOGICAL BEHAVIOR OF HALLOYSITE SUSPENSIONS IN POLYDIMETHYLSILOXANE","authors":"M. Sokolov, N. M. Kuznetsov, S. Belousov, S. Chvalun","doi":"10.6060/ivkkt.20216411.6402","DOIUrl":"https://doi.org/10.6060/ivkkt.20216411.6402","url":null,"abstract":"","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90123330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.6060/ivkkt.20216404.6238
A. Ramazanov, David R. Ataev, M. A. Kasparov
The aim of this work is to develop a new effective technology for producing high-quality lithium carbonate from natural lithium-containing brines. Freshly deposited aluminum hydroxide was used to separate lithium from the trace amounts of sodium and calcium. It was found that the completeness of lithium extraction from brines purified from magnesium depends on the sorbent dosage, phase contact time, mineralization, pH, and brine temperature. To extract lithium from brines with a mineralization of less than 100 g/dm3, it is necessary to introduce 4 mol of aluminum hydroxide per 1 mol of lithium in the brine. For brines with a mineralization greater than 200 g/dm3, the consumption of the sorbent providing the extraction of lithium more than 96% is 2.5 mol of aluminum hydroxide. Desorption of lithium chloride from lithium-aluminum concentrate is carried out by processing 4-5 canopies of concentrate in a Soxlet type apparatus with the same volume of distilled water. The resulting concentrated solution of lithium chloride is purified from calcium impurities in contact with a saturated solution of lithium carbonate. From a heated aqueous solution of lithium chloride purified from calcium impurities, lithium carbonate is precipitated by dosing a stoichiometric amount of a saturated solution of sodium carbonate into it. The precipitate of lithium carbonate is separated from the mother solution, washed with three portions of a saturated solution of lithium carbonate at a ratio of solid to liquid by weight equal to one to five, in order of decreasing the concentration of sodium in each portion of the wash water. The dried product contains at least 99.6% Li2CO3.
{"title":"OBTAINING HIGH QUALITY LITHIUM CARBONATE FROM NATURAL LITHIUM-CONTAINING BRINES","authors":"A. Ramazanov, David R. Ataev, M. A. Kasparov","doi":"10.6060/ivkkt.20216404.6238","DOIUrl":"https://doi.org/10.6060/ivkkt.20216404.6238","url":null,"abstract":"The aim of this work is to develop a new effective technology for producing high-quality lithium carbonate from natural lithium-containing brines. Freshly deposited aluminum hydroxide was used to separate lithium from the trace amounts of sodium and calcium. It was found that the completeness of lithium extraction from brines purified from magnesium depends on the sorbent dosage, phase contact time, mineralization, pH, and brine temperature. To extract lithium from brines with a mineralization of less than 100 g/dm3, it is necessary to introduce 4 mol of aluminum hydroxide per 1 mol of lithium in the brine. For brines with a mineralization greater than 200 g/dm3, the consumption of the sorbent providing the extraction of lithium more than 96% is 2.5 mol of aluminum hydroxide. Desorption of lithium chloride from lithium-aluminum concentrate is carried out by processing 4-5 canopies of concentrate in a Soxlet type apparatus with the same volume of distilled water. The resulting concentrated solution of lithium chloride is purified from calcium impurities in contact with a saturated solution of lithium carbonate. From a heated aqueous solution of lithium chloride purified from calcium impurities, lithium carbonate is precipitated by dosing a stoichiometric amount of a saturated solution of sodium carbonate into it. The precipitate of lithium carbonate is separated from the mother solution, washed with three portions of a saturated solution of lithium carbonate at a ratio of solid to liquid by weight equal to one to five, in order of decreasing the concentration of sodium in each portion of the wash water. The dried product contains at least 99.6% Li2CO3.","PeriodicalId":14640,"journal":{"name":"IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88929507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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