Eurasian Chemico-Technological Journal最新文献_第10页

Porous Nickel Based Half-Cell Solid Oxide Fuel Cell and Thin-Film Yttria-Stabilized Zirconia Electrolyte 多孔镍基半电池固体氧化物燃料电池和薄膜氧化钇稳定氧化锆电解质

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Eurasian Chemico-Technological Journal Pub Date : 2021-03-25 DOI: 10.18321/ECTJ1029

A. Umirzakov, A. Mereke, Altynay Shaikenova, B. Rakhmetov, M. Yeleuov, R. Beisenov, R. Ebrahim, B. A. Mansurov

{"title":"Porous Nickel Based Half-Cell Solid Oxide Fuel Cell and Thin-Film Yttria-Stabilized Zirconia Electrolyte","authors":"A. Umirzakov, A. Mereke, Altynay Shaikenova, B. Rakhmetov, M. Yeleuov, R. Beisenov, R. Ebrahim, B. A. Mansurov","doi":"10.18321/ECTJ1029","DOIUrl":"https://doi.org/10.18321/ECTJ1029","url":null,"abstract":"In this work, a porous nickel anode for thin-film solid oxide fuel cell prepared by the simple powder hot-pressing method is investigated. Powders of Ni and pore-forming agent (PFA) were thoroughly mixed in different ratios, pressed in a mold and further sintered. The polishing technique with Yttria-Stabilized Zirconia (YSZ) powder has been developed to decrease the surface roughness of Ni-based anode in order to deposit a crack-free electrolyte layer. The 3 μm YSZ thin-film electrolyte was deposited by the pulsed laser deposition technique on the surface of the anode. Morphological and elemental analyses of the samples were characterized by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analyses. X-ray diffraction was used for phase analysis and structural characterization. The specific surface areas of the resulting anodes were calculated from their isotherms of N2 adsorption and desorption using the Sorbtometer and calculated by Brunauer Emmett-Teller (BET) method. As a result, the highest mechanical strength and specific surface area (15.42 m2g-1) possessed a sample with the content of PFA equal to 40%, while its ionic conductivity at 800 °C reached 6. 4∙10-2 S/cm.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41982498","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: 1

Advanced Characterization of Bituminous Binders: Comparing Industrial and Paving-Grade Bituminous Binders 沥青粘结剂的高级特性:工业级和路面级沥青粘结剂的比较

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Eurasian Chemico-Technological Journal Pub Date : 2021-03-25 DOI: 10.18321/ECTJ1033

Shahin Eskandarsefat, P. Caputo, C. Rossi, R. Vaiana, C. Sangiorgi

{"title":"Advanced Characterization of Bituminous Binders: Comparing Industrial and Paving-Grade Bituminous Binders","authors":"Shahin Eskandarsefat, P. Caputo, C. Rossi, R. Vaiana, C. Sangiorgi","doi":"10.18321/ECTJ1033","DOIUrl":"https://doi.org/10.18321/ECTJ1033","url":null,"abstract":"This paper deals with the fundamental differences between industrial and paving-grade bituminous binders. The paper is presented in two main sections: 1) a review of the materials’ colloidal structure and the required properties for the industrial and paving applications; 2) a wide range of experimental tests with which the bituminous binders were studied and compared. In this research, a 160/220 industrial bitumen was studied and compared to a paving-grade bitumen with the same penetration and with a lower penetration, 70/100 one. The research consisted of physical, chemical, thermal, microstructural, and rheological analysis to provide a comprehensive understanding of these bituminous binders of diverse applications. Overall, the comparison of the tests’ results indicated that while the asphaltene content and its characteristics have a great influence on the bitumen’s properties, it is not the only fundamental factor. During the study of the chemical structures via Atomic Force Microscopy (AFM), it was found that the Peri phase (attributed to the resins) also plays an important role, defining the bitumen’s physical visco-elastic properties. In fact, from a microstructural point of view using AFM a significant difference was notified between the industrial bitumen and the paving-grade ones. These differences allow the paving-grade bitumens to be more elastic and ductile compared to the industrial bitumen.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48883247","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

Heat Capacity and Thermodynamic Functions of Sr(La1-xLnx)2WO7 Compounds Doped with Samarium and Europium 钐和铕掺杂Sr（La1-xLnx）2WO7化合物的热容和热力学函数

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Eurasian Chemico-Technological Journal Pub Date : 2021-03-25 DOI: 10.18321/ECTJ1031

D. Sadyrbekov, M. Bissengaliyeva, D. B. Gogol, N. Bekturganov, Shynar T. Taimassova

引用次数: 0

Sorption of Heavy Metal Ions by Composite Materials Based on Polycarboxylic Acids and Bentonite Clay 聚羧酸-膨润土复合材料对重金属离子的吸附

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Eurasian Chemico-Technological Journal Pub Date : 2021-03-25 DOI: 10.18321/ECTJ1030

Shynar Zhumagaliyeva, R. S. Iminovа, G. Kairalapova, B. Kudaybergenova, Z. Abilov

{"title":"Sorption of Heavy Metal Ions by Composite Materials Based on Polycarboxylic Acids and Bentonite Clay","authors":"Shynar Zhumagaliyeva, R. S. Iminovа, G. Kairalapova, B. Kudaybergenova, Z. Abilov","doi":"10.18321/ECTJ1030","DOIUrl":"https://doi.org/10.18321/ECTJ1030","url":null,"abstract":"The paper shows the study results of sorption capacities of composite gels based on polyacrylic and polymethacrylic acids with bentonite clay as the mineral filler concerning heavy metal ions (Pb+2, Cu+2, Ni+2, Zn+2, Fe+2, Cd+2). The binding of metal ions to gels occurs through the formation of electrostatic bonds between the charged surface of bentonite clay and ionogenic functional groups of polymers in the composition, as well as the coordination bonds between metal ions and unshared pairs of oxygen electrons in the functional groups of polymers. The gel swelling degree decreases in metal solutions with increasing metals concentration and the content of BC in the composite. The sorption and desorption of heavy metal ions from the polymer-clay composites from model solutions and samples of industrial wastewater from the Kazakhstani metallurgical plants were evaluated. The adjustment of the pH, the temperature of the medium and the clay content in the composite leads to increasing the degree of sorption and achieving regeneration of the used composite gels in certain media. The data obtained testify to the prospects of using these composites as effective sorbents of heavy metals from industrial wastewaters expanding the range of composite materials for wastewater treatment.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44465601","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: 1

Thermodynamically Equilibrium Compositions of the Products Formed During the Filtration Combustion of the Metal-Containing Mixtures 含金属混合物过滤燃烧过程中生成产物的热力学平衡组成

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Eurasian Chemico-Technological Journal Pub Date : 2020-12-30 DOI: 10.18321/ectj998

E. Salgansky, D. Podlesniy, M. Tsvetkov, A. Zaichenko

引用次数: 1

Recent Achievements and Future Challenges in Nanoscience and Nanotechnology 纳米科学和纳米技术的最新成就和未来挑战

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Eurasian Chemico-Technological Journal Pub Date : 2020-12-30 DOI: 10.18321/ectj994

Z. Mansurov

{"title":"Recent Achievements and Future Challenges in Nanoscience and Nanotechnology","authors":"Z. Mansurov","doi":"10.18321/ectj994","DOIUrl":"https://doi.org/10.18321/ectj994","url":null,"abstract":"The article presents the investigation results of the formation and synthesis of nanosized materials which were obtained at the Institute of Combustion Problems, many works have been brought to practical use. Investigations of low-temperature soot formation become the basis of nanomaterial synthesis methods, developed at the Institute for Combustion Problems since 1985. Flame can be considered as a chemical reactor to produce target products. The main feature of the processes based on technological combustion is that the target product is formed as a result of the combustion reaction, occurring spontaneously at high temperatures with a high speed without consuming external energy, i.e. due to its own heat. With the development of nanotechnology, new challenges have emerged in the synthesis of nanomaterials under combustion synthesis conditions. Below is a list of works on nanomaterials synthesis carried out at the Institute: complete scheme of soot formation; energy intensive nanocarbon materials; development and study of perovskite photocatalysts for hydrogen evolution; obtaining carbon fibers by the method of electrospinning; obtaining of biologically soluble membranes based on polymeric nanofibres and hydroxyapatite of calcium; synthesis of nanocarbon sorbents for purification of water from heavy metal ions.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41876417","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: 7

Electrochemical Synthesis, Characterization and Corrosion Properties of POA−MoO42- Coating in 3.5% NaCl POA−MoO42-涂层在3.5% NaCl中的电化学合成、表征及腐蚀性能

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Eurasian Chemico-Technological Journal Pub Date : 2020-12-28 DOI: 10.18321/ectj992

Y. Bakhytzhan, A. Argimbayeva, G. Rakhymbay, Raigul Jumanova, Kh. Avchukir, B. Burkitbayeva

引用次数: 0

Conductive Polymer/SiO2 Composite as an Anticorrosive Coating Against Carbon Dioxide Corrosion of Mild Steel. A Simulation Study 导电聚合物/SiO2复合材料作为低碳钢二氧化碳腐蚀的防腐涂层。模拟研究

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Eurasian Chemico-Technological Journal Pub Date : 2020-12-28 DOI: 10.18321/ectj991

Kh. Avchukir, B. D. Burkitbayeva

{"title":"Conductive Polymer/SiO2 Composite as an Anticorrosive Coating Against Carbon Dioxide Corrosion of Mild Steel. A Simulation Study","authors":"Kh. Avchukir, B. D. Burkitbayeva","doi":"10.18321/ectj991","DOIUrl":"https://doi.org/10.18321/ectj991","url":null,"abstract":"In this work corrosion of mild steel affected by carbon dioxide was studied using a simulation model developed by Nordsveen M. and Nesic S. Using this comprehensive model of the uniform corrosion made possible to predict of corrosion rate of steel in the carbonic acid medium and the influence of different conditions on the anticorrosive property of coated electrode has been investigated. 1D model of corrosion process includes Butler-Volmer and Tafel equations and takes into account both the kinetics of anodic dissolution of an iron and electrochemical discharge of carbonic acid, water and hydrogen ions. The model has been created in COMSOL Multiphysics software and further improvement of this model allowed studying the influence of parameters such as solution composition, the partial pressure of CO2, temperature and flow velocity of the solution on the corrosion rate of the steel. The results of numerical simulation demonstrate that the use of conductive polymerpolypyrrole/ SiO2 composite as an anti-corrosive resin coating reduces the corrosion rate of mild steel by 7 times or more, depending on pH, temperature and flow rate. Furthermore, increasing of flow velocity from 0.1 to 10 m/s affects to the removal of corrosion products from the surface of mild steel and as a result corrosion rate raises from 0.3 to 0.45 mm/year at a temperature of 80 °C and pH=4.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47612737","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: 2

Investigation of Electrohydraulic Effect on Physicochemical Characteristics of High-Resinous Oil “Karazhanbas” 电液对高树脂油“卡拉赞巴斯”理化特性影响的研究

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Eurasian Chemico-Technological Journal Pub Date : 2020-12-28 DOI: 10.18321/ectj999

R. Salakhov, M. Seitzhanova, D. U. Bodykov, Larissa R. Sassykova, N. Zhakirova, T. Seilkhanov

{"title":"Investigation of Electrohydraulic Effect on Physicochemical Characteristics of High-Resinous Oil “Karazhanbas”","authors":"R. Salakhov, M. Seitzhanova, D. U. Bodykov, Larissa R. Sassykova, N. Zhakirova, T. Seilkhanov","doi":"10.18321/ectj999","DOIUrl":"https://doi.org/10.18321/ectj999","url":null,"abstract":"In order to change the viscosity of high-resinous oil of the “Karazhanbas” field (Kazakhstan), the effect of electrohydraulic action on it was studied. The effect of adding an organic solvent xylene on the rheological properties of oil is investigated. A comparative study of the hydrocarbon composition of oil before and after electrohydraulic impact was carried out by the method of gas chromatographymass spectrometry. Fragment composition of oil hydrocarbons before and after electrohydraulic treatment was determined by 1H and 13C NMR spectroscopy. It is shown that the conversion of heavy oil fractions to light ones begins with a five-time electrohydraulic impact. It is determined that 20‒25 electric discharge pulses are sufficient for the quantitative process of splitting hydrocarbons. It was found that the addition of xylene to high-viscosity oil leads to an increase in the conversion of hydrocarbons under electrohydraulic action. The content of paraffins and naphthalenes in high-viscosity oil is slightly reduced during electrohydraulic processing. In oil, after electrohydraulic action, a decrease in the proportion of protons of long alkyl terminal СН3-groups of hydrocarbons is observed, which indicates the process of decomposition of heavy oil fractions into light fractions.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46937071","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: 1

PCL Based CIP-Loaded Double-Layer Films Deposited by Low-Electron Beam Dispersion Method and its Antibacterial Properties 低电子束分散法制备PCL基CIP负载双层膜及其抗菌性能

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Eurasian Chemico-Technological Journal Pub Date : 2020-12-28 DOI: 10.18321/ectj997

Qin Xu, Beibei Li, Xu Zhengwei, Xiaohong Jiang, M. Yarmolenko, A. Rogachev, A. Rogachev

{"title":"PCL Based CIP-Loaded Double-Layer Films Deposited by Low-Electron Beam Dispersion Method and its Antibacterial Properties","authors":"Qin Xu, Beibei Li, Xu Zhengwei, Xiaohong Jiang, M. Yarmolenko, A. Rogachev, A. Rogachev","doi":"10.18321/ectj997","DOIUrl":"https://doi.org/10.18321/ectj997","url":null,"abstract":"In this paper, low-electron beam dispersion (EBD) method is used to prepare a kind of double-layer films on different substrates. The bottom layer is a mechanically stirred mixture of the degradable polycaprolactone (PCL) and ciprofloxacin (CIP), and the top layer is polyurethane (PU) film. The molecular structure, chemical composition and morphology of the double-layer films were investigated by FTIR, XPS and SEM. The results showed that the surfaces of the double-layer films are uniform and the thicknesses can reach micron level. In addition, the two layers are well bonded. Then the films were sliced and immersed in PBS solution, and the time-dependent variable was used to analyze the kinetic slow-release behavior of CIP in the double-layer films by agar diffusion antibacterial experiments. It can be seen that sustained release time of CIP in the double-layer films can be up to 7 days, which is due to fact that the upper PU film working as a sealing layer helps to realize the drug slow-release. Based on the above research, the comprehensive performance of the films with the composition of PCL:CIP/PU=1:1/1 is the best.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44545410","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