Chemical Problems最新文献_第10页

SYNTHESIS AND BIOLOGICAL ACTIVITY OF NEW DITHIOCARBAMATE DERIVATIVES 新型二硫代氨基甲酸酯衍生物的合成及生物活性研究

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-2-174-180

C. Y. Shukurov

引用次数: 0

PHYSICOMECHANICAL PROPERTIES OF HIGH AND LOW DENSITY POLYETHYLENE MIXTURES AND MODIFIED COMPOSITIONS ON THEIR BASIS 高密度和低密度聚乙烯混合物及其改性组合物的物理力学性能

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-3-336-342

F. Mustafayeva, N. Kakhramanov, I. Ismayilov, L. Khamedova, G. Martynova

引用次数: 1

PHASE COMPOSITION, MAGNETIC AND CATALYTIC PROPERTIES OF NANOSTRUCTURED NICKEL-CONTAINING NAX ZEOLITE IN THE REACTION OF OXIDATIVE CONVERSION OF PROPANOL-1 纳米结构含镍nax沸石在丙醇-1氧化转化反应中的相组成、磁性和催化性能

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-3-410-420

A.D. Valiyeva, E. H. Ismailov, S. Osmanova, R. D. Qasimov, P. A. Nadirov, J. Mirzai

引用次数: 0

THERMODYNAMİC PROPERTİES OF THE Bi2Te3 AND Bi4Te5 COMPOUNDS THERMODYNAMİC PROPERTİES的Bi2Te3和Bi4Te5化合物

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-3-315-324

G. S. Hasanova, G. B. Dashdiyeva, Y. Yusibov, M. Babanly

引用次数: 2

Ni-FOAM MODIFIED BY ‘’DIP AND DRYING’’ METHOD - EFFECT OF TRANSITION METAL SALTS ON THE ELECTROCHEMICAL PROPERTIES 浸渍干燥法改性泡沫镍-过渡金属盐对电化学性能的影响

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-3-289-297

E. Petkucheva, E. Lefterova, E. Slavcheva

{"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}

引用次数: 0

SYNTHESIS AND X-RAY DIFFRACTION STUDY OF Pb4Yb2S7 COMPOUND Pb4Yb2S7化合物的合成及x射线衍射研究

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-3-382-387

V. Gasymov, G.F. Hasanov

引用次数: 0

CHEMICAL INTERACTION AND GLASS FORMATION IN THE As2S3-CuCr2Te4 SYSTEM As2S3-CuCr2Te4体系中的化学相互作用和玻璃形成

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-3-376-381

I. Aliev, M. G. Shakhbazov, S. Ismailova

引用次数: 1

SYNTHESIS AND INDUSTRIAL APPLICATION OF PROTECTIVE LAYER CATALYSTS BASED ON KAOLIN FOR HYDROCLEAN INSTALLATIONS 水力净化装置用高岭土保护层催化剂的合成及工业应用

Chemical Problems Pub Date : 2020-01-01 DOI: 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

{"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}

引用次数: 0

SOLID OXIDE FUEL CELL STACK SIMULATION USING EFFECTIVE MEDIUM APPROXIMATION 基于有效介质近似的固体氧化物燃料电池堆模拟

Chemical Problems Pub Date : 2020-01-01 DOI: 10.32737/2221-8688-2020-3-298-314

A. U. Sharafutdinov, Yuri Fedotov, S. Bredikhin

引用次数: 1

ANALYSIS OF THE RESULTS OF EXPERIMENTAL SORBENT FOR CHLORIDE COMPOUNDS REMOVAL 吸附剂去除氯化物实验结果分析

Chemical Problems Pub Date : 2020-01-01 DOI: 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

引用次数: 0