Pub Date : 2020-01-01DOI: 10.32737/2221-8688-2020-2-174-180
C. Y. Shukurov
{"title":"SYNTHESIS AND BIOLOGICAL ACTIVITY OF NEW DITHIOCARBAMATE DERIVATIVES","authors":"C. Y. Shukurov","doi":"10.32737/2221-8688-2020-2-174-180","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-2-174-180","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73490056","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-336-342
F. Mustafayeva, N. Kakhramanov, I. Ismayilov, L. Khamedova, G. Martynova
{"title":"PHYSICOMECHANICAL PROPERTIES OF HIGH AND LOW DENSITY POLYETHYLENE MIXTURES AND MODIFIED COMPOSITIONS ON THEIR BASIS","authors":"F. Mustafayeva, N. Kakhramanov, I. Ismayilov, L. Khamedova, G. Martynova","doi":"10.32737/2221-8688-2020-3-336-342","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-336-342","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82319830","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-410-420
A.D. Valiyeva, E. H. Ismailov, S. Osmanova, R. D. Qasimov, P. A. Nadirov, J. Mirzai
{"title":"PHASE COMPOSITION, MAGNETIC AND CATALYTIC PROPERTIES OF NANOSTRUCTURED NICKEL-CONTAINING NAX ZEOLITE IN THE REACTION OF OXIDATIVE CONVERSION OF PROPANOL-1","authors":"A.D. Valiyeva, E. H. Ismailov, S. Osmanova, R. D. Qasimov, P. A. Nadirov, J. Mirzai","doi":"10.32737/2221-8688-2020-3-410-420","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-410-420","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80417648","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-315-324
G. S. Hasanova, G. B. Dashdiyeva, Y. Yusibov, M. Babanly
{"title":"THERMODYNAMİC PROPERTİES OF THE Bi2Te3 AND Bi4Te5 COMPOUNDS","authors":"G. S. Hasanova, G. B. Dashdiyeva, Y. Yusibov, M. Babanly","doi":"10.32737/2221-8688-2020-3-315-324","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-315-324","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83348394","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-289-297
E. Petkucheva, E. Lefterova, E. Slavcheva
The paper presents the application of facile one-step “Dip and Drying –DDM” method for deposition of different transition metals (Fe, Co and Ni) on nickel foam (NF) substrates. The obtained modified electrodes are tested as bi-functional electrocatalysts for overall water splitting reaction. The influence of the used metal salts (chloride, sulphate or nitrite) on catalytic efficiency of the modified NF electrodes toward the hydrogen (HER) and oxygen (OER) evolution reactions in 1M KOH is also investigated. The performed electrochemical experiments cyclic voltammetry, (CV) and low sweep voltammetry, (LSV) indicate good catalytic performance, originated from the combined effect of electrochemically active constituents, 3D interconnected porosity of the substrate, and its high electrical conductivity, which in turn, resulted in large active surface area available for partial electrode reactions . The electrodes obtained from sulphate baths accelerated both HER and OER, over-performing the rest of the investigated samples and could be considered as potential candidates for application in industrial alkaline electrolysis.
{"title":"Ni-FOAM MODIFIED BY ‘’DIP AND DRYING’’ METHOD - EFFECT OF TRANSITION METAL SALTS ON THE ELECTROCHEMICAL PROPERTIES","authors":"E. Petkucheva, E. Lefterova, E. Slavcheva","doi":"10.32737/2221-8688-2020-3-289-297","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-289-297","url":null,"abstract":"The paper presents the application of facile one-step “Dip and Drying –DDM” method for deposition of different transition metals (Fe, Co and Ni) on nickel foam (NF) substrates. The obtained modified electrodes are tested as bi-functional electrocatalysts for overall water splitting reaction. The influence of the used metal salts (chloride, sulphate or nitrite) on catalytic efficiency of the modified NF electrodes toward the hydrogen (HER) and oxygen (OER) evolution reactions in 1M KOH is also investigated. The performed electrochemical experiments cyclic voltammetry, (CV) and low sweep voltammetry, (LSV) indicate good catalytic performance, originated from the combined effect of electrochemically active constituents, 3D interconnected porosity of the substrate, and its high electrical conductivity, which in turn, resulted in large active surface area available for partial electrode reactions . The electrodes obtained from sulphate baths accelerated both HER and OER, over-performing the rest of the investigated samples and could be considered as potential candidates for application in industrial alkaline electrolysis.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88560068","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-382-387
V. Gasymov, G.F. Hasanov
{"title":"SYNTHESIS AND X-RAY DIFFRACTION STUDY OF Pb4Yb2S7 COMPOUND","authors":"V. Gasymov, G.F. Hasanov","doi":"10.32737/2221-8688-2020-3-382-387","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-382-387","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82466647","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-376-381
I. Aliev, M. G. Shakhbazov, S. Ismailova
{"title":"CHEMICAL INTERACTION AND GLASS FORMATION IN THE As2S3-CuCr2Te4 SYSTEM","authors":"I. Aliev, M. G. Shakhbazov, S. Ismailova","doi":"10.32737/2221-8688-2020-3-376-381","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-376-381","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89788352","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-325-335
M. P. Yunusov, Sh.B. Djalalova, Kh.A. Nasullaev, Z. Teshabaev, Sh.T. Gulomov, B.B. Rakhimjanov
: The dynamics of the accelerated formation of corrosion products of equipment in the process of obtaining diesel and oil fractions from sour oil with a high concentration of resinous asphaltic substances and derivatives of petroleum acids are investigated in this work. The following experimental data is obtained: the genesis of the phase composition during the synthesis of granules of the protective layer from kaolin phosphate mass, followed by their modification with Ni 2+ ions in order to control the surface acidity and the hydrogenating function focused on the conversion of reactive alkenes. The mechanism and conditions for the formation of samples of catalysts of the protective layer of the core type containing the weight of 2.5%, are discussed. NiO in the surface layer, and 5 times less in the inner part of the granules which consist of particles of clay mineral cemented Al (H 2 PO 4 ) 2 , as well as other products of dissolution of kaolinite and hydromica with phosphoric acid, are also studied. The results of the study of the efficiency of removal of corrosive iron and impurity elements of petroleum origin in granules of the developed protective layer are presented. It has been established that the use of granules of a protective layer in optimal shape and size, together with a reduced tendency to form a solid crust of sediments, limited the increase in pressure drop on the layer of CoMo catalyst of hydrofining oil distillates and the deasphalted vacuum residue of high-sulfur tarry oil.
{"title":"SYNTHESIS AND INDUSTRIAL APPLICATION OF PROTECTIVE LAYER CATALYSTS BASED ON KAOLIN FOR HYDROCLEAN INSTALLATIONS","authors":"M. P. Yunusov, Sh.B. Djalalova, Kh.A. Nasullaev, Z. Teshabaev, Sh.T. Gulomov, B.B. Rakhimjanov","doi":"10.32737/2221-8688-2020-3-325-335","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-325-335","url":null,"abstract":": The dynamics of the accelerated formation of corrosion products of equipment in the process of obtaining diesel and oil fractions from sour oil with a high concentration of resinous asphaltic substances and derivatives of petroleum acids are investigated in this work. The following experimental data is obtained: the genesis of the phase composition during the synthesis of granules of the protective layer from kaolin phosphate mass, followed by their modification with Ni 2+ ions in order to control the surface acidity and the hydrogenating function focused on the conversion of reactive alkenes. The mechanism and conditions for the formation of samples of catalysts of the protective layer of the core type containing the weight of 2.5%, are discussed. NiO in the surface layer, and 5 times less in the inner part of the granules which consist of particles of clay mineral cemented Al (H 2 PO 4 ) 2 , as well as other products of dissolution of kaolinite and hydromica with phosphoric acid, are also studied. The results of the study of the efficiency of removal of corrosive iron and impurity elements of petroleum origin in granules of the developed protective layer are presented. It has been established that the use of granules of a protective layer in optimal shape and size, together with a reduced tendency to form a solid crust of sediments, limited the increase in pressure drop on the layer of CoMo catalyst of hydrofining oil distillates and the deasphalted vacuum residue of high-sulfur tarry oil.","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79114236","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-298-314
A. U. Sharafutdinov, Yuri Fedotov, S. Bredikhin
{"title":"SOLID OXIDE FUEL CELL STACK SIMULATION USING EFFECTIVE MEDIUM APPROXIMATION","authors":"A. U. Sharafutdinov, Yuri Fedotov, S. Bredikhin","doi":"10.32737/2221-8688-2020-3-298-314","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-298-314","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77175617","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 : 2020-01-01DOI: 10.32737/2221-8688-2020-3-366-375
M. P. Yunusov, Kh.A. Nasullaev, Sh.T. Gulomov, N. F. Isaeva, B.D. Mustafaev, B.B. Rakhimjanov, R.G. Khodjiev
{"title":"ANALYSIS OF THE RESULTS OF EXPERIMENTAL SORBENT FOR CHLORIDE COMPOUNDS REMOVAL","authors":"M. P. Yunusov, Kh.A. Nasullaev, Sh.T. Gulomov, N. F. Isaeva, B.D. Mustafaev, B.B. Rakhimjanov, R.G. Khodjiev","doi":"10.32737/2221-8688-2020-3-366-375","DOIUrl":"https://doi.org/10.32737/2221-8688-2020-3-366-375","url":null,"abstract":"","PeriodicalId":10015,"journal":{"name":"Chemical Problems","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77916599","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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