Amantay Dalbanbay, A. N. Nefedov, R. A. Nurmanova, M. Nauryzbayev
Казахский национальный университет им. аль-Фараби, ЦФХМА, Алматы, Казахстан *E-mail: amantay.d@gmail.com В данной работе исследовано влияние поверхностно-активных веществ (КМЦ и ДЦУ) на электролиз меди с помощью циклической вольтамперометрии и хроноамперометрического методов. Рабочим электродом служил стеклоуглеродный электрод. Исследования показывают, что в кислом растворе сульфата меди (10-2 М CuSO4 + 0,5 M H2SO4) трехмерное электрохимическое осаждение меди происходит по механизму мгновенной нуклеации. Добавленные поверхностно-активные вещества влияют на процесс разряда ионизации, стандартный потенциал электровосстановления смещается в отрицательную сторону. Добавление ДЦУ приводит к уменьшению пика катодного тока, а КМЦ увеличивает. При потенциалах осаждения, соответствующих областям до пикового тока цикловольамперограмм (здесь все еще смешанная кинетика электроосаждения), число образующихся зародышей больше для чистого раствора, но при потенциалах спада тока, где имеет место диффузионный режим, плотность распределения зародышей (ПРЗ) выше для растворов с ПАВ. Наиболее сильное действие в данном случае оказывает добавка ДЦУ. В случае добавления смешанных добавок значения ПРЗ близки к таковым с КМЦ, что очевидно указывает на преимущественную адсорбцию КМЦ, тогда как ДЦУ в виде комплексов с ионами меди находится ближе к приэлектродной области.
哈萨克国立大学。al - farabi、cfhma、阿拉木图、哈萨克斯坦*E-mail: amantay.d@gmail.com研究了表面活性物质(cmz和gmail.com)对铜电解的影响。工作电极是玻璃碳电极。研究表明，硫酸铜(10-2米CuSO4 + 0.5 M H2SO4)是由瞬间核化机制引起的三维电化学沉积。添加表面活性物质会影响电离放电的过程，标准的电恢复电位会向负方向移动。增加dtu会减少阴极峰值，cmc会增加。在与峰值电流前的沉积物相对应的沉积物(这里仍然是混合电沉积动力学)，胚胎形成的数量更大，但当有扩散模式的电流下降的潜力时，胚胎的分布密度(pds)较高。在这种情况下，最强的效果是添加dsu。如果添加了混合添加剂，prc值与cmc非常接近，这显然表明cmc具有潜在的吸附作用，而铜离子复合物更接近于电极领域。
{"title":"Study of the influence of surface-active substances on the initial stage of copper electrodeposition","authors":"Amantay Dalbanbay, A. N. Nefedov, R. A. Nurmanova, M. Nauryzbayev","doi":"10.15328/CB890","DOIUrl":"https://doi.org/10.15328/CB890","url":null,"abstract":"Казахский национальный университет им. аль-Фараби, ЦФХМА, Алматы, Казахстан *E-mail: amantay.d@gmail.com В данной работе исследовано влияние поверхностно-активных веществ (КМЦ и ДЦУ) на электролиз меди с помощью циклической вольтамперометрии и хроноамперометрического методов. Рабочим электродом служил стеклоуглеродный электрод. Исследования показывают, что в кислом растворе сульфата меди (10-2 М CuSO4 + 0,5 M H2SO4) трехмерное электрохимическое осаждение меди происходит по механизму мгновенной нуклеации. Добавленные поверхностно-активные вещества влияют на процесс разряда ионизации, стандартный потенциал электровосстановления смещается в отрицательную сторону. Добавление ДЦУ приводит к уменьшению пика катодного тока, а КМЦ увеличивает. При потенциалах осаждения, соответствующих областям до пикового тока цикловольамперограмм (здесь все еще смешанная кинетика электроосаждения), число образующихся зародышей больше для чистого раствора, но при потенциалах спада тока, где имеет место диффузионный режим, плотность распределения зародышей (ПРЗ) выше для растворов с ПАВ. Наиболее сильное действие в данном случае оказывает добавка ДЦУ. В случае добавления смешанных добавок значения ПРЗ близки к таковым с КМЦ, что очевидно указывает на преимущественную адсорбцию КМЦ, тогда как ДЦУ в виде комплексов с ионами меди находится ближе к приэлектродной области.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46188710","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}
{"title":"Синтез модифицированных молибденом и вольфрамом композиционных систем на основе бисорбента из рисовой шелухи","authors":"D. H. Kamysbaev, B. Serikbaev, G. S. Arbuz","doi":"10.15328/CB977","DOIUrl":"https://doi.org/10.15328/CB977","url":null,"abstract":"","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43823120","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}
Nazerke Dauletbayevna Nurabay, M. Abutalip, R. K. Rakhmetullayeva, G. Mun
Al-Farabi Kazakh National University, Almaty, Kazakhstan *Е-mail: grigoriy.mun@kaznu.kz Smart water-soluble polymers and hydrogels are capable to reversibly react to insignificant changes of the medium properties (pH, temperature, ionic strength, a presence of some substances, illumination, electric field). The reacting of a system is visible to the naked eye (the formation of a new phase in a homogeneous solution, or compression of the hydrogel). The properties of such polymers and hydrogels are considered. For the first time, the stimuli-responsive polymeric hydrogels based on N-isopropylacrylamide (NIPAAM), 2-hydroxyethyl acrylate (HEA) and acrylic acid (AA) have been synthesized by free initiation of radical copolymerization. The purpose of the research is to obtain stimuli-responsive cross-linked terpolymers based on N-isopropylacrylamide, 2-hydroxyethyl acrylate and acrylic acid and study their physicochemical properties. The physicochemical methods such as scanning electron microscopy, differential scanning calorimetry, infrared spectroscopy, gravimetry, cathetometric and thermogravimetric analyses were used in this study. To determine the thermal and pH – sensitivity of the modified copolymer, the effect of temperature on the NIPAAMНEA-AA nets (in different pH media) was studied. They are characterized by a thermally induced collapse and a dependence on a medium pH. The interaction of copolymers with drugs such as lincomycin and gentamicin was studied for using the new copolymers as a drug carrier. To study the antibacterial properties and the transportation of physiologically active substances of hydrogel, the elimination of specially prepared bacteria by hydrogels with various medicinal ingredients were conducted.
{"title":"Development of the technology for obtaining new hydrogel materials based on acrylic monomers","authors":"Nazerke Dauletbayevna Nurabay, M. Abutalip, R. K. Rakhmetullayeva, G. Mun","doi":"10.15328/CB959","DOIUrl":"https://doi.org/10.15328/CB959","url":null,"abstract":"Al-Farabi Kazakh National University, Almaty, Kazakhstan *Е-mail: grigoriy.mun@kaznu.kz Smart water-soluble polymers and hydrogels are capable to reversibly react to insignificant changes of the medium properties (pH, temperature, ionic strength, a presence of some substances, illumination, electric field). The reacting of a system is visible to the naked eye (the formation of a new phase in a homogeneous solution, or compression of the hydrogel). The properties of such polymers and hydrogels are considered. For the first time, the stimuli-responsive polymeric hydrogels based on N-isopropylacrylamide (NIPAAM), 2-hydroxyethyl acrylate (HEA) and acrylic acid (AA) have been synthesized by free initiation of radical copolymerization. The purpose of the research is to obtain stimuli-responsive cross-linked terpolymers based on N-isopropylacrylamide, 2-hydroxyethyl acrylate and acrylic acid and study their physicochemical properties. The physicochemical methods such as scanning electron microscopy, differential scanning calorimetry, infrared spectroscopy, gravimetry, cathetometric and thermogravimetric analyses were used in this study. To determine the thermal and pH – sensitivity of the modified copolymer, the effect of temperature on the NIPAAMНEA-AA nets (in different pH media) was studied. They are characterized by a thermally induced collapse and a dependence on a medium pH. The interaction of copolymers with drugs such as lincomycin and gentamicin was studied for using the new copolymers as a drug carrier. To study the antibacterial properties and the transportation of physiologically active substances of hydrogel, the elimination of specially prepared bacteria by hydrogels with various medicinal ingredients were conducted.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44431644","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}
T. Kairaliyeva, M. Karbaschi, M. Taeibi-Rahni, S. Faraji, K. Schano, M. Born, S. Aidarova, Reinhard Miller
{"title":"Instabilities of drops detaching from a circular capillary tip","authors":"T. Kairaliyeva, M. Karbaschi, M. Taeibi-Rahni, S. Faraji, K. Schano, M. Born, S. Aidarova, Reinhard Miller","doi":"10.15328/CB887","DOIUrl":"https://doi.org/10.15328/CB887","url":null,"abstract":"","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41259783","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}
B. Serikbaev, D. H. Kamysbaev, G. S. Arbuz, Dinara Alimbai, Akbayan Arin
{"title":"Новые электрокаталитические системы на основе бисорбентов из рисовой шелухи","authors":"B. Serikbaev, D. H. Kamysbaev, G. S. Arbuz, Dinara Alimbai, Akbayan Arin","doi":"10.15328/CB820","DOIUrl":"https://doi.org/10.15328/CB820","url":null,"abstract":"","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47454813","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}
N. Akimbaeva, I. Anuarbekova, Zh. Asylkhanov, S. Vizer, K. Yerzhanov, Nesipbay Kuandykovych Tusipbaev, Zhadyra Yerzhanova
1JSC “A.B. Bekturov’s Institute of Chemical Sciences”, Almaty, Kazakhstan 2JSC “Institute of Metallurgy and Enrichment”, Almaty, Kazakhstan *E-mail: s-w07@bk.ru Research has been carried out to study flotation activity of new surface active substances among dithiocarbonyl and phosphoryl derivatives of monoethanolamine and diethanolamine on the gold-bearing sulphide ore of the Bestobinskoye deposit of Kazakhstan. Among the synthesized compounds, effective collectors for selective enrichment of sulfide polymetallic gold ores were found. Sodium N-octyl-N-2-hydroxyethyldithiocarbamate (AA-41) and sodium O-2-(dimethoxyphosphoryl2-hydroxyethylamino)ethylxanthate (GF-2) were proposed as new flotation reagents. They were tested in flotation of gold-bearing polymetallic ore as additional collectors contributing to an increase in percentage of gold extraction in the collective concentrate in comparison with the factory basic regime in which a mixture of butyl xanthate (BX) and ditiophosphate butyl ether or butyl airoflot (BAF) was used. The results of flotation tests indicate that collective ability of GF-2 in combination with BAF provides a higher gold recovery to the concentrate – 90.8%, than gold recovery with BX and BAF is (87.7%). It should be specially emphasized that consumption of GF-2 in comparison with BX is lower on 33%. Synthesis methods of the AA-41 and GF-2 flotation agents were developed, and evidence of their structure was given by IRS and NMR 1Н, 13С. The principal technological scheme of GF-2 obtaining was developed. In synthesis of collector AA-41, one of the principles of “green” chemistry “catalytic systems and processes (as selective as possible) are in all cases better than stoichiometric ones” was used. The use of tetrabutylammonium iodide as catalyst in synthesis allows shorten the reaction time, reduce reaction temperature and increase the selectivity.
{"title":"Synthesis and flotation activity of reagent-collectors based on dithiocarbonyl and phosphoryl derivatives of amino alcohols","authors":"N. Akimbaeva, I. Anuarbekova, Zh. Asylkhanov, S. Vizer, K. Yerzhanov, Nesipbay Kuandykovych Tusipbaev, Zhadyra Yerzhanova","doi":"10.15328/CB868","DOIUrl":"https://doi.org/10.15328/CB868","url":null,"abstract":"1JSC “A.B. Bekturov’s Institute of Chemical Sciences”, Almaty, Kazakhstan 2JSC “Institute of Metallurgy and Enrichment”, Almaty, Kazakhstan *E-mail: s-w07@bk.ru Research has been carried out to study flotation activity of new surface active substances among dithiocarbonyl and phosphoryl derivatives of monoethanolamine and diethanolamine on the gold-bearing sulphide ore of the Bestobinskoye deposit of Kazakhstan. Among the synthesized compounds, effective collectors for selective enrichment of sulfide polymetallic gold ores were found. Sodium N-octyl-N-2-hydroxyethyldithiocarbamate (AA-41) and sodium O-2-(dimethoxyphosphoryl2-hydroxyethylamino)ethylxanthate (GF-2) were proposed as new flotation reagents. They were tested in flotation of gold-bearing polymetallic ore as additional collectors contributing to an increase in percentage of gold extraction in the collective concentrate in comparison with the factory basic regime in which a mixture of butyl xanthate (BX) and ditiophosphate butyl ether or butyl airoflot (BAF) was used. The results of flotation tests indicate that collective ability of GF-2 in combination with BAF provides a higher gold recovery to the concentrate – 90.8%, than gold recovery with BX and BAF is (87.7%). It should be specially emphasized that consumption of GF-2 in comparison with BX is lower on 33%. Synthesis methods of the AA-41 and GF-2 flotation agents were developed, and evidence of their structure was given by IRS and NMR 1Н, 13С. The principal technological scheme of GF-2 obtaining was developed. In synthesis of collector AA-41, one of the principles of “green” chemistry “catalytic systems and processes (as selective as possible) are in all cases better than stoichiometric ones” was used. The use of tetrabutylammonium iodide as catalyst in synthesis allows shorten the reaction time, reduce reaction temperature and increase the selectivity.","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48202048","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}
P. Urkimbayeva, Azamat Esmuratov, R. Rahmetullaeva, Daulet B Kaldybekov, B. Bakytzhanuly
{"title":"The creation of the technology of biodegradable films based on cornstarch","authors":"P. Urkimbayeva, Azamat Esmuratov, R. Rahmetullaeva, Daulet B Kaldybekov, B. Bakytzhanuly","doi":"10.15328/CB964","DOIUrl":"https://doi.org/10.15328/CB964","url":null,"abstract":"","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44275159","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}
{"title":"Comparative hydrogenation of the sunflower oil on platinum and nickel catalysts","authors":"Kainaubek Toshtay, A. Auyezov, C. Geantet","doi":"10.15328/CB803","DOIUrl":"https://doi.org/10.15328/CB803","url":null,"abstract":"","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46293755","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}
{"title":"Ecological state of the river Ural","authors":"G. Tulemisova, Rauan Sharipbaevich Abdinov, Gaukhar Zhaiykkyzy Kabdrakhimova, Тalap Boranbaevich Janetov","doi":"10.15328/cb808","DOIUrl":"https://doi.org/10.15328/cb808","url":null,"abstract":"","PeriodicalId":9860,"journal":{"name":"Chemical Bulletin of Kazakh National University","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2017-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43152550","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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