Azerbajčan himiâ žurnaly最新文献

{"title":"DETERMINATION OF ECOTOXIC SUBSTANCES IN WASTEWATER FORMED IN THE PURIFICATION PROCESS OF PETROLEUM OILS WITH HYDROGEN BY SPECTRAL METHODS","authors":"A.M. Huseynli","doi":"10.32737/0005-2531-2023-4-104-111","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-104-111","url":null,"abstract":"The article analyzes the determination of the amount of dissolved ecotoxicants in the sample taken from the industrial wastewater obtained during the process of hydrogen treatment of petroleum oils. During the hydrogenation process, different types of wastes are formed, depending on the nature of each compound contained in petroleum distillates. Every gas, liquid, solid waste formed during the process of hydrogen purification of petroleum distillates by the oil refining industry has a negative impact on the environment in various ways. One of the main directions of our scientific research is the ecological assessment of the environmental impact of wastewater formed in the process of hydrogen treatment of petroleum distillates.Based on the results obtained, the environmental impact of the wastewater was assessed. The amount of volatile ecotoxicants in the wastewater sample was determined by spectral methods and is shown in the table. We used gas chromatography-mass spectrometry method for the polycyclic aromatic hydrocarbons; optical emission spectrometry method for metals; spectrometry method for phenols, dyes and fluorine; nephelometry method for turbidity; the gravimetry method for total suspended particles. Based on the results obtained, it is possible to assess the environmental impact of wastewater generated during the technological process at the hydrogen treatment plant. According to the results of the research, it can be noted that the industrial wastewater discharged from the oil refinery's facility № 501 has a content that will damage the ecosphere and biosphere, despite the fact that the discharge standards meet the permissible discharge limits","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"37 40","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954612","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":"SULFONATE ADDITIVES TO LUBRICATING OILS","authors":"P.Sh. Mammadova, I.D. Kulaliyev, K.A. Salmanova, I.A. Sadirzadeh","doi":"10.32737/0005-2531-2023-4-48-54","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-48-54","url":null,"abstract":"To expand the resource base and increase the efficiency of sulfonate additives, the possibility of obtaining them based on mixed raw materials - petroleum oil M-8 and alkylbenzene synthesized using propylene fraction C18-С30 oligomers was studied. It is shown that during sulfonation of mixed raw materials, the yield of sulfonic acids is 89-93%, the content of hard-to-recycle waste - acid tar is lower than during sulfonation of petroleum oil by 30-35%. The influence of the ratio of ingredients in the initial mixture on the indicators of neutral sulfonate was studied and the conditions for obtaining additives of the required quality were found. The properties of the developed additives in M-11 oil at a concentration of 5% were studied by standard methods. The composition and structure of sulfonates were studied by elemental analysis and IR spectroscopy. The resulting additives have a micellar structure. The results of laboratory tests have shown that neutral, medium - and highly alkaline semi-synthetic calcium sulfonates have high physico-chemical and functional properties. The neutral sulfonate is superior in yield, active substance content, and dispersing properties to NСК petroleum sulfonate and OLOA 246B additive. Medium- and high-alkaline additives in terms of physicochemical and detergent properties are at the level of commercial petroleum sulfonates C-150, C-300 and Hightech 6060M additives, and surpass them in dispersing, anti-corrosion properties and stability against oxidation. Alkaline semi-synthetic calcium sulfonates have a high stability of the colloidal dispersion to the action of water and have better performance compared to analogues. With an increase in the alkalinity of the obtained additives, the physicochemical properties improve, which is associated with the features of their colloidal structure. Using the developed neutral and high-alkaline additives as detergent-dispersant components, experimental motor oils М-10DM and М-10G2, were prepared, which meet the requirements in terms of quality. The high efficiency of semi-synthetic sulfonates allows them to be used in modern motor oils","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"37 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954453","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":"THE SYNTHESIS, STUDY OF PHYSICOCHEMICAL PROPERTIES, AND EVALUATION OF CATALYTIC ACTIVITY OF A THREE-WAY CATALYST MODIFIER CONTAINING EUROPIUM (III) OXIDE","authors":"S.I. Niftaliev, F.M. Chiragov, I.V. Kuznetsova, A.D. Nikiforova, D.S. Sugatov, E.O. Baksheev, V.N. Rychkov, A.D. Salnikova","doi":"10.32737/0005-2531-2023-4-112-119","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-112-119","url":null,"abstract":"Modification of the applied Pt-containing catalysts with rare-earth metals is one of effective ways to increase their activity and resistance to thermal deactivation, which is associated with both an increase in thermal stability of the texture and structure of the carrier material and an increase in the degree of dispersion and resistance to sintering of the applied platinum metals (PM) when exposed to high temperatures. Conflicting data make it difficult to select a suitable modifier for the use as part of a three-way catalyst in the exhaust treatment system of gasoline-powered cars, whose function is to simultaneously convert CO, CxHy and NOx. In this work, the effect of europium-modified Pt-containing γ-Al2O3 -based catalyst on its physicochemical properties and activity in the oxidation of CO, CxHy, and NOx reduction processes was evaluated. The catalytic activity was evaluated by passing a gas mixture simulating the exhaust of a gasoline-powered car through the catalyst applied onto the surface of a cylindrical honeycomb block with simultaneous measurement of the degree of conversion of toxic components into relatively non-toxic CO2, N2 and H2O in the temperature range from 1000C to 4000C. The modification of the Pt/γ-Al2O3 catalytic system with europium was shown to enhance the activity in all three reactions studied, indicating a great potential for the use as a modifier of a three-way catalyst","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"37 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954446","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":"EFFECT OF HEATING ON STRUCTURAL PARAMETERS OF NITRILE BUTADIENE RUBBER IN THE PRESENCE OF CHLORINE-CONTAINING COMPOUNDS","authors":"G.G. Azizova, F.A. Amirov, I.G. Movlayev, G.A. Mammadova, R.F. Khankishiyeva, Sh. M.Mammadov","doi":"10.32737/0005-2531-2023-4-91-96","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-91-96","url":null,"abstract":"A new class of active organic crosslinking agents for the vulcanization of NBR based on halogenmethyl-containing compounds has been found, allowing improvement significantly in the rheological and structural parameters of NBR. Gel content and Mooney viscosity in binary systems after plastification on rollers were studied. The sol fraction of cross-linked NBR (SKN-40+TCMCC) was found to be characterized by a bimodal MWD. Abnormally high value of W/ ns of sol fractions is associated with the bimodal nature of their MWD and indicates the presence of gel in the elastomer. The value of η of the sol fractions in cross-linked NBR was found to be insignificant. The sol fraction of cross-linked HCPX elastomer was shown to have lower values of the specified parameters and lower content of high-molecular-weight fractions. The branching density ρ of macromolecules of sol fraction of cross-linked NBR was 1.90-2.3·10-3, i.e. on average corresponded to one monomer unit and two hundred branching nodes per molecule","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"37 27","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954623","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":"CATALASE AND PEROXIDASE BIOMIMETIC SENSOR BASED ON Ag-ELECTRODE","authors":"N.N. Malikova, N.I. Alizade, T.M. Nagiev","doi":"10.32737/0005-2531-2023-4-40-47","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-40-47","url":null,"abstract":"Research has been carried out on the development of a biomimetic sensor of the catalase and peroxidase type to determine trace amounts of peroxide hydrogen and low concentrations of ethyl alcohol in an aqueous solution. By potentiometric research, the physicochemical feature of the catalase and peroxidase biomimetic sensor was studied, the transducer of which was Ag. Rapid and accurate determination of hydrogen peroxide is very important, but no less important side of this issue is associated with the determination of trace amounts of C2H5OH in aqueous media of various origins. The need to develop express methods for determining the concentration of C2H5OH in aqueous solutions follows from the requirements for the quality of wine and alcohol products. As you know, the taste and drinking qualities of the product depend on the ratio of methyl and ethyl alcohols. In this work, biomimetic sensors of the catalase and peroxidase types based on an Ag electrode were developed for determining trace amounts of hydrogen peroxide and ethanol. Biomimetic sensors of the catalase and peroxidase types based on an Ag electrode have been developed for the determination of microquantities of hydrogen peroxide and ethyl alcohol. The applicability of a biomimetic sensor for determining trace concentrations of hydrogen peroxide, as well as for determining microquantities of ethyl alcohol in an aqueous solution with a low detection limit, high sensitivity, wide recognition range, high stability, and repeated use, is shown. The developed and synthesized biomimetic sensor of the catalase and peroxidase types based on TPhPFe3+/Al2O3/Ag have high sensitivity, stability, and do not lose their activity for a long time","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"37 50","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134953462","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":"DETERMINATION OF OPTIMAL CONDITIONS FOR EXTRACTION OF ALUMINUM OXIDE FROM KAOLIN CLAY OF CHOVDARDAGH DEPOSIT","authors":"S.G. Efendiyeva, S.T. Jafarova, A.A. Heydarov, E.B. Gahramanova, A.I. Abbasova, G.M. Ganzayeva","doi":"10.32737/0005-2531-2023-4-55-62","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-55-62","url":null,"abstract":"The increasing demand for aluminum around the world is increasing interest in developing alternative technologies for the production of alumina from non-bauxite sources, especially from clay. In this work, the extraction of aluminum from kaolin in the process of leaching using an aqueous solution of hydrochloric acid as a leaching agent is investigated. For this study, samples of burnt kaolin clay from the Chovdardagh deposit were used. Before leaching, crude kaolin was calcined; calcination achieves dehydroxylation of kaolinite, which is the main mineralogical phase of kaolin, and its transformation into metakaolin, an amorphous phase of Al-Si, from which aluminum is easily leached. The calcination of the raw kaolin used in this work was carried out at 7500C for 2 h, taking into account that these conditions were recognized as optimal in the corresponding experimental studies to achieve the maximum yield of alumina in solution. It was revealed that the leaching of kaolin clay in order to extract aluminum oxide is achieved using samples of kaolin clay calcined under the above conditions, with 20% hydrochloric acid for 2 hours at a leaching temperature of 950C. The degree of extraction of aluminum and iron oxide under these conditions is 96.7 and 94.1%, respectively","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"38 40","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134953637","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":"SYNTHESIS AND PROPERTIES OF BROMINE-CONTAINING BICYCLIC UNSATURATED POLYESTERS","authors":"A.M. Mustafayev, Y.N. Gahramanli, B.N. Babanly, R.I. Ismailova","doi":"10.32737/0005-2531-2023-4-63-70","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-63-70","url":null,"abstract":"A method for obtaining bromine-containing bicyclic unsaturated polyesters by the interaction of 1,4,5,6,7,7-hexabromobicyclo-[2,2,1]-hept-5-ene-2,3-dicarboxylic acid anhydride, propanetriol and maleic anhydride was developed. It was found that unsaturated polyethers synthesized by a two-step method have a higher molecular weight (3130), density (1.461 g/cm3), viscosity (105 St) and ether number (400 ml KOH/g). It was found that the compositions of epoxy resin ED-20 with unsaturated polyether obtained by method III possess higher tensile strength (90 MPa), higher relative elongation (9%), higher Vicat resistance (2500C) than unmodified epoxy resin. It was shown that in comparison with pure epoxy resin ED-20, its composition with unsaturated polyester synthesized by method I and cured in the presence of polyethylene polyamine (ED-20: unsaturated polyester: polyethylene polyamine), has flame retardant properties, high tensile strength, higher relative elongation and thermal resistance by Vicat. The best results are achieved when the content of unsaturated polyester in the composition is 20%","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"36 40","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954264","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":"GAS-PHASE OXIDATION OF 2-PICOLINE BY “GREEN OXIDIZERS” H2O2 AND N2O","authors":"I.T. Nagieva, N.I. Ali-zadeh, T.M. Nagiev","doi":"10.32737/0005-2531-2023-4-13-20","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-13-20","url":null,"abstract":"This communication presents the results of studies of coherently synchronized reactions of 2-picoline oxidation with hydrogen peroxide and nitrous oxide (I) in the gas phase. Optimal conditions for obtaining target products in these reactions are revealed. The influence of the process parameters on the value of the determinant in the reactions: dealcodimerization of 2-picoline with hydrogen peroxide and dimerization of 2-picoline with nitrous oxide (I) is shown. Calculated in the reaction of deal-codimerization of 2-picoline with hydrogen peroxide, the determinant of chemical conjugation has a value of D = 0.17 under optimal conditions, which indicates the induced character of dealcodimerization of 2-picoline. Based on this value, a quantitative assessment of the influence of the primary reaction (decomposition of hydrogen peroxide) on the secondary one (dealcodimerization of 2-picoline) was given. In the reaction of dimerization of 2-picoline with nitrous oxide (I), the chemical conjugation determinant has, under optimal conditions, a value of D = 0.54, which, according to the chemical interference scale, is in the region of chemical conjugation, when the primary reaction (the decomposition of nitrous oxide (I)) accelerates the secondary reaction (dimerization of 2-picoline)","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"38 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134953450","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":"SYNTHESIS AND CHARACTERIZATION OF NEW METAL COMPLEXES WITH TRIDENTATE HYDRAZONE LIGAND","authors":"G.G. Abbasova, A.M. Pashajanov, M.I. Ganbarova, S.M. Gasanova, Z.A. Mammadova, A.M. Nasibova","doi":"10.32737/0005-2531-2023-4-84-90","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-84-90","url":null,"abstract":"Considering necessity of application of Schiff base ligands, containing hydrazone moiety, there were synthesized 2-hydroxy-1-naphtaldehyde acetylhydrazone and its metal complexes. A tridentate ligand with hydrazone moiety was synthesized on the basis of acetylhydrazine and 2-hydroxy-1-naphthoic aldehyde. The characterization and structure of it was identified by IR, UV- and NMR-spectroscopy. The electronic absorption spectrum of the ligand shows absorption bands in the range of max 237–320 nm. 1H NMR (300 MHz, CD4O):  6.90–8.21, 9.31, 10.52. Recrystallization occured from an ethanol. Mel¬ting point of the ligand was 21530C. Yield was 80%. There were acquired complexes of the Schiff base ligand with zinc and manganese. Colored solid complexes of zinc and manganese (II), respectively, yellow and brown colors with the obtained ligand were synthesized in ethanol medium. Yield for complexes was 75 and 73 %, respectively for zinc and manganese complex. The molar ratio of ligand and me¬tal in the complex was 2:1. The structure of the complexes was confirmed by elemental analysis, IR-, UV-, and thermogravimetric analysis","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"37 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954443","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":"THERMODYNAMIC PROPERTIES OF SOME TERNARY COMPOUNDS OF THE ARGYRODITE FAMILY","authors":"I.J. Alverdiyev, S.Z. Imamaliyeva, E.I. Akhmedov, Yu.A. Yusibov, M.B. Babanly","doi":"10.32737/0005-2531-2023-4-21-30","DOIUrl":"https://doi.org/10.32737/0005-2531-2023-4-21-30","url":null,"abstract":"Compounds of the argyrodite family are valuable environmentally friendly functional materials with mixed ion-electronic conductivity, thermoelectric, photovoltaic, optical, and other properties. This paper presents the results of a thermodynamic study of the Cu8GeS6 and Cu8GeSe6 compounds - representatives of this family using the EMF method with Cu4RbCl3I2 solid electrolyte in the 295-430 K temperature range. From the EMF measurement data, the partial molar functions of copper were calculated in both crystal modifications of the Cu8GeS6 and Cu8GeSe6 compounds, undergoing polymorphic transformations at 330 and 335 K, respectively. Based on solid-phase equilibria diagrams of the Cu-Ge-S(Se) systems, the potential-forming reactions responsible for the partial molar functions of copper in the alloys were determined and the thermodynamic functions of formation and standard entropies of both modifications of these compounds, as well as the thermodynamic functions of their polymorphic transitions, were calculated. The work also presents and analyzes the thermodynamic data for compounds of the argyrodite family available in the literature","PeriodicalId":480979,"journal":{"name":"Azerbajčan himiâ žurnaly","volume":"37 26","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954624","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}