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Theoretical Foundations of Chemical Engineering最新文献

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Oxidative Desulfurization of Diesel Fraction Using Catalysts Based on Transition Metal Oxides, Aluminum, and SBA-15 基于过渡金属氧化物、铝和SBA-15催化剂的柴油馏分氧化脱硫研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700198
O. O. Gul’, P. D. Domashkina, A. V. Akopyan, R. S. Borisov, A. V. Anisimov
{"title":"Oxidative Desulfurization of Diesel Fraction Using Catalysts Based on Transition Metal Oxides, Aluminum, and SBA-15","authors":"O. O. Gul’,&nbsp;P. D. Domashkina,&nbsp;A. V. Akopyan,&nbsp;R. S. Borisov,&nbsp;A. V. Anisimov","doi":"10.1134/S0040579525700198","DOIUrl":"10.1134/S0040579525700198","url":null,"abstract":"<p>Catalysts containing tungsten oxide, molybdenum oxide, and SBA-15 aluminosilicate were studied for the oxidation of a model dibenzothiophene (DBT) mixture with high sulfur content and a diesel fraction. Low-temperature nitrogen adsorption–desorption, transmission electron microscopy (TEM), nuclear magnetic resonance (NMR), infrared (IR) spectroscopy, and temperature-programmed desorption of ammonia were used to analyze the catalysts. Conditions were selected for the oxidation of the model mixture, which simulates the composition of real fuel, and for the oxidation of the diesel fraction.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"100 - 107"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of Zircon on the Basis of Raw Materials of the Kola Peninsula using Mechanical Activation 以科拉半岛为原料，机械活化法制备锆石
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700241
V. Yu. Vinogradov, A. G. Kasikov, A. M. Kalinkin
{"title":"Preparation of Zircon on the Basis of Raw Materials of the Kola Peninsula using Mechanical Activation","authors":"V. Yu. Vinogradov,&nbsp;A. G. Kasikov,&nbsp;A. M. Kalinkin","doi":"10.1134/S0040579525700241","DOIUrl":"10.1134/S0040579525700241","url":null,"abstract":"<p>Using mechanical activation, zircon and (Zr,Ce)SiO<sub>4</sub> solid solutions were synthesized. Zirconium dioxide prepared from baddeleyite concentrate and silica extracted from copper–nickel slag were used as starting substances. The prospect of utilization of synthesized zircon for the immobilization of radioactive waste was assessed.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"133 - 138"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of Metallurgical Iron-Containing Slag on the Technical Properties and Physicochemical Processes During the Firing of Ceramic Bricks 冶金含铁渣对陶瓷砖烧结过程中技术性能和理化过程的影响
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700265
V. Z. Abdrakhimov
{"title":"The Effect of Metallurgical Iron-Containing Slag on the Technical Properties and Physicochemical Processes During the Firing of Ceramic Bricks","authors":"V. Z. Abdrakhimov","doi":"10.1134/S0040579525700265","DOIUrl":"10.1134/S0040579525700265","url":null,"abstract":"<p>The objects of study are metallurgical iron-containing slag, substandard clay material, and ceramic brick. In the chemical technology of ceramic materials, particular importance is given to the physicochemical processes occurring during brick firing, as they primarily determine the operational properties of ceramic materials. It has been established that bricks produced from substandard clay material without the use of tempering agents do not meet the GOST requirements due to the number of cracks without destruction, the presence of through cracks, and multiple chippings resulting from the high sensitivity of the raw mixture to drying. It has been found that the introduction of metallurgical slag into the ceramic mass based on substandard clay, even in an amount of 10%, reduces crack formation, increases compressive and flexural strength, and improves frost resistance. The optimal composition for ceramic brick production contains 20% slag, with the resulting brick meeting the M125 grade and exhibiting no defects. Further increases in metallurgical slag content do not reduce the brick grade but lead to various defects, such as a black core. Studies have shown that the introduction of metallurgical iron-containing slag into ceramic masses promotes the appearance of anorthite, mullite, diopside, fayalite, magnesium ferrite, pigeonite, and forsterite in X-ray diffraction patterns, which contribute to increased brick strength.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"142 - 150"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Removal of Ca, Mg, and Na from Manganese Sulfate Solutions by Extraction 萃取法去除硫酸锰溶液中的Ca、Mg和Na
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700216
I. Yu. Fleitlikh, N. A. Grigor’eva, T. A. Azekenov, S. A. Bannikova
{"title":"Removal of Ca, Mg, and Na from Manganese Sulfate Solutions by Extraction","authors":"I. Yu. Fleitlikh,&nbsp;N. A. Grigor’eva,&nbsp;T. A. Azekenov,&nbsp;S. A. Bannikova","doi":"10.1134/S0040579525700216","DOIUrl":"10.1134/S0040579525700216","url":null,"abstract":"<div><p>An extraction technology for purification of manganese sulfate solutions from Ca, Mg, and Na using di(2,4,4-trimethylpentyl)phosphinic acid in a diluent (Cyanex 272) as an extractant has been developed. The technology makes it possible to obtain manganese sulfate monohydrate suitable for the production of lithium-ion batteries.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"114 - 119"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kinetics of Sulfuric Acid Decomposition of Nepheline 霞石硫酸分解动力学研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700289
D. V. Maiorov
{"title":"Kinetics of Sulfuric Acid Decomposition of Nepheline","authors":"D. V. Maiorov","doi":"10.1134/S0040579525700289","DOIUrl":"10.1134/S0040579525700289","url":null,"abstract":"<p>A mathematical analysis of the obtained experimental data was performed using topochemical equations in a linearized form: Kazeev–Erofeev–Kolmogorov, Ginstling–Brounshtein, Jander, and Gray–Weddington equations. It was found that the interaction mechanism of nepheline concentrate with sulfuric acid is most accurately described by the Ginstling–Brounshtein equation. The activation energy of the process was determined, based on which it was concluded that the process is controlled by kinetics.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"156 - 161"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crystallization Affinage of Uranium in Spent Nuclear Fuel Reprocessing Technology. Modified Design of Crystallizer 乏核燃料后处理技术中铀的结晶附着物。结晶器的改进设计
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700320
V. I. Volk, V. A. Kascheev, E. D. Filimonova
{"title":"Crystallization Affinage of Uranium in Spent Nuclear Fuel Reprocessing Technology. Modified Design of Crystallizer","authors":"V. I. Volk,&nbsp;V. A. Kascheev,&nbsp;E. D. Filimonova","doi":"10.1134/S0040579525700320","DOIUrl":"10.1134/S0040579525700320","url":null,"abstract":"<p>Crystallization affinage of uranium in spent nuclear fuel (SNF) reprocessing technology is described. Analysis of a linear crystallizer operation is conducted on the example of uranyl nitrate hexahydrate (UNH) crystallization. It is shown that the most effective operation regime (from the point of view of the yield of uranyl nitrate (UN) into the crystalline phase) is achieved by ensuring a lower temperature of uranyl nitrate solution in the washing zone of the apparatus, and thus, in the crystal discharge zone, which significantly complicates operation of the apparatus in pilot and industrial conditions. In this regard, a changed construction of the apparatus is suggested, to ensure effective crystallization without lowering the temperature in the working volume of the washing zone and the crystal discharge zone.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"182 - 188"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the Strength of Composites Based on 3D-Printed Frames Impregnated with Thermosetting Compounds with Various Diluents 不同稀释剂浸渍热固性化合物的3d打印框架复合材料强度研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700150
Yu. A. Goncharova, A. A. Goncharov, Yu. V. Maistrov, P. D. Akulinichev
{"title":"Study of the Strength of Composites Based on 3D-Printed Frames Impregnated with Thermosetting Compounds with Various Diluents","authors":"Yu. A. Goncharova,&nbsp;A. A. Goncharov,&nbsp;Yu. V. Maistrov,&nbsp;P. D. Akulinichev","doi":"10.1134/S0040579525700150","DOIUrl":"10.1134/S0040579525700150","url":null,"abstract":"<div><p>The results of a study on the strength of composite materials based on 3D-printed frameworks made using FDM technology from ABS plastic with a 33% fill are presented. The frameworks are impregnated with a thermosetting compound based on ED-20 epoxy resin with the TETA hardener, incorporating acetone diluents in amounts up to 1.5 wt % and DEG-1 in amounts up to 5 wt % to reduce viscosity.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"77 - 82"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anti-Icing Compositions Based on Urea and Propylene Glycol 基于尿素和丙二醇的防冰组合物
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700137
E. A. Frolova, D. F. Kondakov, V. P. Danilov
{"title":"Anti-Icing Compositions Based on Urea and Propylene Glycol","authors":"E. A. Frolova,&nbsp;D. F. Kondakov,&nbsp;V. P. Danilov","doi":"10.1134/S0040579525700137","DOIUrl":"10.1134/S0040579525700137","url":null,"abstract":"<div><p>Phase equilibria at temperatures of 0 to –60°C are studied in sections of the urea–propylene glycol–water system with urea to propylene glycol ratios of 3 : 1 to 1 : 3. It is found that the introduction of propylene glycol into the urea–water system makes it possible to obtain anti-icing compositions that are effective at temperatures below –11°C, down to temperatures of –35 to –40°C, with satisfactory melting capacity for ice. The compositions are promising for the development of anti-icing reagents on their basis.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"67 - 69"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Technology of Application of a Hardware and Software Complex Based on the PMR Relaxometry Method for Express Monitoring of Crude Oil Characteristics with Gas Analysis in an Explosive Zone 基于PMR松弛法的软、硬件综合体爆炸区原油特性快速监测与气体分析应用技术
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700186
R. S. Kashaev, G. A. Ovseenko, V. O. Kozelkova, V. I. Karachin, O. V. Kozelkov
{"title":"Technology of Application of a Hardware and Software Complex Based on the PMR Relaxometry Method for Express Monitoring of Crude Oil Characteristics with Gas Analysis in an Explosive Zone","authors":"R. S. Kashaev,&nbsp;G. A. Ovseenko,&nbsp;V. O. Kozelkova,&nbsp;V. I. Karachin,&nbsp;O. V. Kozelkov","doi":"10.1134/S0040579525700186","DOIUrl":"10.1134/S0040579525700186","url":null,"abstract":"<div><p>A technology for express monitoring of oil during its production by a multifunctional automatic well controlled by a hardware and software complex based on the proton magnetic resonance relaxometry method is proposed. The control is carried out by compensating for the additional torque on the shaft of a centrifugal pump electric motor, caused by impurities. Measurements of gas concentrations in an explosive zone using a laser lidar are given.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"95 - 99"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative Assessment of Internal Energy Saving during Rectification 内部节能整改量化评估
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700344
M. K. Zakharov, D. B. Pletnev, E. A. Gubkin
{"title":"Quantitative Assessment of Internal Energy Saving during Rectification","authors":"M. K. Zakharov,&nbsp;D. B. Pletnev,&nbsp;E. A. Gubkin","doi":"10.1134/S0040579525700344","DOIUrl":"10.1134/S0040579525700344","url":null,"abstract":"<p>The essence of the theory of internal energy saving that takes the multiple condensation of vapor on the plates of a rectifying column into account is considered. A quantitative assessment of the internal energy saving is given and the derivation of a formula for calculating the internal energy saving is presented for various aggregate states of the initial mixture. It has been proved that supplying a “cold” initial mixture has great benefits from the viewpoint of the energy consumption. Conditions have been found under which it is expedient to condense the initial vapor–liquid mixture before feeding it into the column.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"197 - 202"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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