Azerbajčan himiâ žurnaly最新文献_第3页

INVESTIGATION OF PHASE EQUILIBRIA AND PHYSICO-CHEMICAL PROPERTIES OF OBTAINED PHASES IN THE Sb2S3-Cr2Se3 SYSTEM Sb2S3-Cr2Se3体系中所得相的相平衡和物理化学性质的研究

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-152-160

E.I. Mamedov

{"title":"INVESTIGATION OF PHASE EQUILIBRIA AND PHYSICO-CHEMICAL PROPERTIES OF OBTAINED PHASES IN THE Sb2S3-Cr2Se3 SYSTEM","authors":"E.I. Mamedov","doi":"10.32737/0005-2531-2023-3-152-160","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-3-152-160","url":null,"abstract":"Using complex of physicochemical methods of analysis (DTA, XRD, MSA, as well as measurements of density and microhardness), the phase equilibria in the Sb2S3-Cr2Se3 system was studied and a phase diagram was constructed. It is established that the system is quasi-binary and has eutectic type T-x diagram. In the process of chemical interaction, a compound with composition Cr2Sb2S3Se3 is formed in the system. The Cr2Sb2S3Se3 compound melts incongruently at 6500C., A limited area of the solid solution based on the initial components of the system is formed. The coordinates of the eutectic formed between the α-solid solution and the Cr2Sb2S3Se3 compound is 17 mol % Cr2Se3 at 4500C. At room temperature, solid solutions based on Sb2S3 reach up to 5 mol % Cr2Se3, and based on Cr2Se3 up to – 3 mol % Sb2S3. According to the results of X-ray diffraction analysis, Cr2Sb2S3Se3 crystallizes in a tetragonal system with lattice parameters: a=16.37; c=11.69 Å, ρpuc.=5.40 q/sm3, ρX-ray=5.42 q/sm3. The temperature dependence of the electrical conductivity and thermo-EMF of the (Sb2S3)1-x(Cr2Se3)x (x=0.01; 0.02; 0.03;) solid solution has been studied","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135107293","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

OBTAINING OF ECOLOGICALLY CLEAN DIESEL FUEL BY EXTRACTION PROCESS UNDER THE INFLUENCE OF MAGNETIC FIELD 利用磁场作用下的萃取工艺获得生态清洁柴油

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-105-111

B.G. Abdulov, A.A. Hasanov

引用次数: 0

THE SCIENTIFIC BASIS OF INDUSTRIAL APPLICATION OF THE PROCESS OF SELECTIVE HYDROGENATION OF BENZENE IN DIFFERENT CATALYTIC SYSTEMS 不同催化体系中苯选择性加氢工艺工业应用的科学依据

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-39-52

N.T. Shikhverdieva, U.A. Mammedova, N.A. Zeynalov

{"title":"THE SCIENTIFIC BASIS OF INDUSTRIAL APPLICATION OF THE PROCESS OF SELECTIVE HYDROGENATION OF BENZENE IN DIFFERENT CATALYTIC SYSTEMS","authors":"N.T. Shikhverdieva, U.A. Mammedova, N.A. Zeynalov","doi":"10.32737/0005-2531-2023-3-39-52","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-3-39-52","url":null,"abstract":"Pollution of the environment with substances obtained in the production of oil and other products in various industries forces us to take measures to solve environmental problems that have become relevant in recent years. Arenes, belonging to the class of petroleum-derived aromatic hydrocarbons, are very life-threatening substances due to their carcinogenic effects. In this regard, one of the important issues is the release of benzene, a special representative of arenes, from its carcinogenic effect as a toxic and volatile compound, and its use in the production of cyclohexane, which is the main raw material for the production of caprolactam and nylon. The selectivity of the hydrogenation of benzene and the high yield of cyclohexane, the target product, depend on the reaction conditions and the choice of catalysts. In recent years, the application of polymer and zeolite nanocomposite catalysts, as well as modified metal polymer-based catalysts, in obtaining highly active and selective catalysts for the purpose of effective implementation of aromatic hydrocarbon hydrogenation processes is of great interest. Thus, naphthenic hydrocarbons are considered the main starting materials for the synthesis of various classes of compounds. Derivatives of these compounds are used in the pharmaceutical industry as special-purpose caprolactam, adipic acid, cyclohexanone, as a solvent for essential oils, varnishes, paints, as an extractant, etc. are used in synthesis. As a result of investigating the catalytic properties of polymer-mineral catalysts in the benzene hydrogenation reaction, it was determined that these reactions show selectivity in the direction of cyclohexane formation in narrow-pore zeolites (mordenite, clinoptilolite)In the presented work, the main information was collected by analyzing the literature on the work carried out in this direction","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135107301","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

ACID-BASE PROPERTIES OF PHOSPHORYLATED CRUMB RUBBER 磷酸化胶屑的酸碱性质

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-18-25

N.A. Efendiyeva

引用次数: 0

AN OVERVIEW OF ELECTRO-FENTON TECHNOLOGY FOR ORGANIC WASTEWATER TREATMENT: OPTIMAL CONDITIONS AND ELECTRODES SELECTION 电fenton有机废水处理技术综述:最佳条件和电极选择

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-70-82

Forat Yasir AlJaberi

{"title":"AN OVERVIEW OF ELECTRO-FENTON TECHNOLOGY FOR ORGANIC WASTEWATER TREATMENT: OPTIMAL CONDITIONS AND ELECTRODES SELECTION","authors":"Forat Yasir AlJaberi","doi":"10.32737/0005-2531-2023-3-70-82","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-3-70-82","url":null,"abstract":"Several conventional methods have been employed to eliminate numerous types of pollutants from domestic and industrial wastewater. Electrochemical techniques are one of these treatment methods used in wastewater treatment. Electro-Fenton technology (EFT) is one type of electrochemical technique. The present review paper aims to provide readers with extensive information about the EFT general definitions, terminologies, mechanisms, fundamental conditions, and statistical analysis based on the published articles for the recent years. The core findings of this work proved that the EFT is more applicable for removing organic contaminants than inorganic ones because of the affinity degree between the adsorbents formed in the reactor and the pollutants. The most important conditions of this technology are the type of anode, the applied current, and the period of the treatment process. The development of the conventional cathode electrode was the most interested field in the literature. The advantages of EFT provide the ability to perform it as a primary or secondary treatment process with other conventional treatment processes. The statistical analysis shows that 68% of the selected cited articles achieved a high performance of EFT when it has performed alone while 32% of these cited articles attained the best performance of EFT in the integrated system with other technologies. The electro-Fenton method is a promising technology to treat wastewater, especially that involving organic pollutants","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135107292","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

FORMATION OF NANOSTRUCTURED TIN OXIDE FILM ON POROUS SILICON 多孔硅上纳米氧化锡膜的形成

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-83-89

K.B. Kim, A.S. Lenshin, F.M. Chyragov, S.I. Niftaliev

引用次数: 0

NUMERICAL ANALYSIS OF THE HEAT TRANSFER AND THE ENTROPY GENERATION FOR A CuO-Al2O3-WATER HYBRID NANOFLUID FLOW THROUGH AN EXTENDED CURVED DUCT 郭- al2o3 -水混合纳米流体在扩展弯曲管道中的传热和熵产的数值分析

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-26-38

Djamila Derbal, Mohamed Bouzit, Abderrahim Mokhefi

{"title":"NUMERICAL ANALYSIS OF THE HEAT TRANSFER AND THE ENTROPY GENERATION FOR A CuO-Al2O3-WATER HYBRID NANOFLUID FLOW THROUGH AN EXTENDED CURVED DUCT","authors":"Djamila Derbal, Mohamed Bouzit, Abderrahim Mokhefi","doi":"10.32737/0005-2531-2023-3-26-38","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-3-26-38","url":null,"abstract":"The present paper focus on the theoretical analysis of the convective heat transfer and the irreversibility state of a laminar flow of a hybrid nanofluid inside a extended curved duct of circular cross section. This nanofluid is obtained from the suspension of the Al2O3 and CuO nanoparticles in the pure water. The flow of the nanofluid start from a narrowed part of a curved duct of a semi-circular shape, its enlarged part is subjected to a uniform hot temperature. The present analysis deals with highlighting the impact of some parameters namely: Dean number (13.83 ⩽ De ⩽ 55.33), Richardson number (0 ⩽ Ri ⩽ 0.1) as well as the effect of the hybrid nanoparticles on the heat transfer rate and the generated entropy. The resolution of the governing equations that include mass, momentum and energy has been performed by the use of the finite element method. The results have shown that the rate of the heat exchange rise according to the augmentation of the Dean number and the hybrid nanofluid volume fraction. However, the flow system irreversibility is more important in the case of the highest Dean number and volume fraction. Moreover, a comparison between different simple and hybrid nanofluids has demonstrated that the latter is more efficient especially for technological and economic reasons","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135063628","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

OBTAINING AND STUDYING THE PROPERTIES OF NANOCOMPOSITES BASED ON A MIXTURE OF HIGH AND LOW PRESSURE POLYETHYLENE WITH METAL-CONTAINING NANOFILLERS 制备并研究了高低压聚乙烯与含金属纳米填料混合的纳米复合材料的性能

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-2-53-60

N.I. Kurbanova, G.G. Mammadova

{"title":"OBTAINING AND STUDYING THE PROPERTIES OF NANOCOMPOSITES BASED ON A MIXTURE OF HIGH AND LOW PRESSURE POLYETHYLENE WITH METAL-CONTAINING NANOFILLERS","authors":"N.I. Kurbanova, G.G. Mammadova","doi":"10.32737/0005-2531-2023-2-53-60","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-2-53-60","url":null,"abstract":"The effect of additives of nanofillers (NF) containing nanoparticles of copper (I) oxides stabilized by a polymer matrix of high-pressure polyethylene (PE) obtained by the mechano-chemical method on the structure and properties of metal-containing nanocomposites based on a mixture of high- and low-pressure polyethylene has been studied by differential thermal (DTA), X-ray phase (XRD) and scanning electron microscopy (SEM) analyses. It is shown that the introduction into the composition of 0.3 – 0.5 wt.% NF leads to an increase in the strength index from16.69 to 19.77 MPa and the amount of deformation at break of the composite by 1.7 times, which is apparently due to the synergistic effect re-lated to the interfacial interaction of copper-containing nanoparticles in the LDPE matrix with the components of LDPE/HDPE composition , the mutual influence of which contributes to an increase in both the amount of deformation and the strength index. The study of the thermal properties of the samples has showed that the introduction of NF containing copper(I) oxide NPs into the composition of mixed polyethylene contributes to a significant increase in the decay temperature of the samples, and the activation energy of the decay of the thermo-oxidative destruction of the resulting nanocomposite increases from 232 to 255 kJ /mol. The results obtained indicate that small amounts of nanofillers (0.3-0.5wt. %), introduced into the polymer, obviously play the role of structurizers - artificial nuclei of crystallization, which contributes to the appearance of a fine-spherulite structure in the polymer, characterized by improved physico-mechanical and thermal properties of the resulting nanocomposite","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135107300","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

ADSORPTION OF Cu (II) IONS FROM WASHING SOLUTIONS OF TAILINGS BY DOWEX MAC-3 H+ SORBENT DOWEX MAC-3 H+吸附剂对尾矿洗涤液中Cu (II)离子的吸附

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-90-97

A.A. Heydarov

{"title":"ADSORPTION OF Cu (II) IONS FROM WASHING SOLUTIONS OF TAILINGS BY DOWEX MAC-3 H+ SORBENT","authors":"A.A. Heydarov","doi":"10.32737/0005-2531-2023-3-90-97","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-3-90-97","url":null,"abstract":"In this article, the experimental results of the adsorption of Cu2+ ion with Dowex Mac-3H+, a cation exchange resin with weak acid character, were investigated. Factors affecting the adsorption of copper ions from sulfated solutions: the initial concentration of Cu2+ ion, the dose amount of the adsorbent, the concentration-time, and the pH of the solution were studied. The obtained results showed that Dowex Mac-3H+ resin shows a high volume capacity (322.6 mg/g) in the separation of Cu2+ ions from sulfated solutions. At the initial concentration of 0.5 g/l, for 4 hours, when 0.2 g of sorbent was taken, at pH 6, at room temperature, the adsorption rate of Cu2+ ions was maximal (98%). In the first 1 hour, sorption occurs at a high rate, and increasing the contact time does not affect the process much. Due to the increase in the concentration of OH- ions at higher pH values, it is observed that the Cu2+ ion changes to the Cu(OH)2 precipitate form. The values of the obtained experimental results fully correspond to the Langmuir and Freundlich isotherms. It can be seen from the adsorption isotherms of the Langmuir and Freundlich model that the adsorption of Cu2+ ions on the resin occurs according to the chemisorption mechanism","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135107298","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

GRAPHENE OXIDE-MODIFIED DIHYDROPYRIMIDINES 氧化石墨烯修饰的二氢嘧啶

Azerbajčan himiâ žurnaly Pub Date : 2023-09-19 DOI: 10.32737/0005-2531-2023-3-142-151

A. Huseynzada, U. Hasanova, Z. Gakhramanova

{"title":"GRAPHENE OXIDE-MODIFIED DIHYDROPYRIMIDINES","authors":"A. Huseynzada, U. Hasanova, Z. Gakhramanova","doi":"10.32737/0005-2531-2023-3-142-151","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-3-142-151","url":null,"abstract":"This study is devoted to the synthesis of various ensembles on the basis of graphene oxide nanolayers and dihydropyrimidines and the investigation of their antimicrobial activity. The “building blocks” of ensembles, viz dihydropyrimidines were synthesized by the Biginelli reaction in the presence of low-toxic copper triflate under microwave conditions. The positive side of the reaction is the absence of any additional purification stage, formed after cooling the solution precipitate just washed with a few amount of distilled water. The structures of synthesized compounds were determined by 1H, 13C and dept135 NMR spectroscopy methods. The second component, viz graphene oxide nanolayers, was synthesized by a modified Hummer method. The modification of the method is caused by the increasing of the oxidizing agent (H2SO4+KMnO4) concentration, which allowed to receive purier nanolayers. The structure and morphology of nanolayers were investigated by SEM and XRD methods, according to which it was determined that the thickness of nanolayers is 1 nm. Subsequently, graphene oxide was modified with dihydropyrimidines. The synthesis of ensembles was performed by non-covalent coupling of dihydropyrimidines with graphene oxide nanolayers by sonication. In addition, the antimicrobial activity of ensembles against S. aureus, Ps. aeruginosa and E. coli was performed. Obtained during the analysis results were compared with the activity of pristine antibiotic ampicillin. It was found that the addition of graphene oxide nanolayers to the dihydropyrimidine molecule allowed to improve the antimicrobial activity of dihydropyrimidines","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135063634","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