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Theoretical Foundations of Chemical Engineering最新文献

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Anti-Icing Compositions Based on Sodium Acetate and Isopropanol 基于醋酸钠和异丙醇的防冰组合物
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700010
E. A. Frolova, D. F. Kondakov, V. P. Danilov
{"title":"Anti-Icing Compositions Based on Sodium Acetate and Isopropanol","authors":"E. A. Frolova,&nbsp;D. F. Kondakov,&nbsp;V. P. Danilov","doi":"10.1134/S0040579525700010","DOIUrl":"10.1134/S0040579525700010","url":null,"abstract":"<p>Phase equilibria in sections of the sodium acetate–isopropanol–water system at temperatures between 0 and –3°C are studied. Compositions are identified that are promising for the development of anti-icing reagents based on them with good melting ability with respect to ice, effective at temperatures down to –20 to –22°C.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"1 - 3"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145538","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
Problems and Prospects of Using “Green” Hydrogen: A Review “绿色”氢利用的问题与展望
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700204
E. A. Chistyakova, E. A. Isaeva, D. A. Moiseenkova, A. K. Osipov
{"title":"Problems and Prospects of Using “Green” Hydrogen: A Review","authors":"E. A. Chistyakova,&nbsp;E. A. Isaeva,&nbsp;D. A. Moiseenkova,&nbsp;A. K. Osipov","doi":"10.1134/S0040579525700204","DOIUrl":"10.1134/S0040579525700204","url":null,"abstract":"<p>A significant number of studies have been devoted to the production of “green” hydrogen. However, it is also crucial to comprehensively examine issues related to its use in energy and industry from both environmental and economic perspectives. Therefore, the authors set out to provide a brief review of recent publications addressing various aspects of “green” hydrogen utilization. The review presents research findings on hydrogen storage and transportation, as well as the environmental impact of hydrogen production as a universal and alternative fuel of the future.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"108 - 113"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145490","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
Synthesis and Investigation of Some Properties of Biochar from Tree Leaf Waste 树叶废弃物生物炭的合成及若干性质研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700125
A. Kh. Aripov, A. D. Yakovenko, S. M. Turabdzhanov, O. Sh. Kodirov, E. A. Timofeeva, Kh. E. Kadirov, L. S. Rakhimova
{"title":"Synthesis and Investigation of Some Properties of Biochar from Tree Leaf Waste","authors":"A. Kh. Aripov,&nbsp;A. D. Yakovenko,&nbsp;S. M. Turabdzhanov,&nbsp;O. Sh. Kodirov,&nbsp;E. A. Timofeeva,&nbsp;Kh. E. Kadirov,&nbsp;L. S. Rakhimova","doi":"10.1134/S0040579525700125","DOIUrl":"10.1134/S0040579525700125","url":null,"abstract":"<p>Biochar from two different biomasses (plane tree leaves and yellow pine) was obtained by pyrolysis under identical conditions: temperature range of 350–450°C and duration of 4 h. A comparison of the chemical composition of ash and microstructure was conducted.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"62 - 66"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145534","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
Modeling and Calculation of a Reactor with a Laminar Reaction Mass Flow in Tubes 管内层流反应质量流反应器的建模与计算
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700368
A. B. Golovanchikov, N. A. Prokhorenko, N. A. Merentsov, N. V. Shibitova
{"title":"Modeling and Calculation of a Reactor with a Laminar Reaction Mass Flow in Tubes","authors":"A. B. Golovanchikov,&nbsp;N. A. Prokhorenko,&nbsp;N. A. Merentsov,&nbsp;N. V. Shibitova","doi":"10.1134/S0040579525700368","DOIUrl":"10.1134/S0040579525700368","url":null,"abstract":"<div><p>An algorithm for the calculation of a tubular reactor with an elementary simple first-order reaction when the reaction mass moves in the tubes by a laminar flow pattern is proposed. Comparative calculations by the proposed algorithm and the conventional algorithm implying the motion of a flow in the plug-flow and stirred-tank regimes are presented. Based on the obtained results, it is concluded that, at high conversions, the volume of a reactor with a laminar flow pattern may be more than an order of magnitude larger than the volume of a plug-flow reactor, but always remains smaller than the volume of a stirred-tank reactor providing the same degree of conversion.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"208 - 211"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145073","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
Optimization of Biogenic Silica Content in SiO2/Bi2O3 Mixture for Obtaining Efficient Photocatalysts by Mechanochemical Activation Method 机械化学活化法优化SiO2/Bi2O3混合物中生物源二氧化硅含量制备高效光催化剂
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S004057952570006X
O. D. Arefieva, M. S. Vasilyeva, A. I. Slavenskaya, I. M. Efimov, D. Kh. Shlyk
{"title":"Optimization of Biogenic Silica Content in SiO2/Bi2O3 Mixture for Obtaining Efficient Photocatalysts by Mechanochemical Activation Method","authors":"O. D. Arefieva,&nbsp;M. S. Vasilyeva,&nbsp;A. I. Slavenskaya,&nbsp;I. M. Efimov,&nbsp;D. Kh. Shlyk","doi":"10.1134/S004057952570006X","DOIUrl":"10.1134/S004057952570006X","url":null,"abstract":"<div><p>Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>SiO<sub>5</sub> oxide photocatalysts are obtained by mechanochemical activation of a mixture of bismuth(III) oxide and biogenic silica from rice husks. The characteristics of the materials are presented using IR spectroscopy, X-ray phase analysis, and X-ray fluorescence analysis. The silica content in the photocatalysts is optimized using a mathematical function describing the dependence of the degree of methyl orange degradation on the amount of SiO<sub>2</sub> in the Bi<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> system.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"27 - 32"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145486","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
Thermal Properties of Solutions in the H3AsO4–H2O System H3AsO4-H2O体系中溶液的热性质
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700113
T. K. Menshchikova, K. S. Nikonov, M. N. Brekhovskikh, L. A. Vaimugin, O. E. Myslitskii
{"title":"Thermal Properties of Solutions in the H3AsO4–H2O System","authors":"T. K. Menshchikova,&nbsp;K. S. Nikonov,&nbsp;M. N. Brekhovskikh,&nbsp;L. A. Vaimugin,&nbsp;O. E. Myslitskii","doi":"10.1134/S0040579525700113","DOIUrl":"10.1134/S0040579525700113","url":null,"abstract":"<p>High-purity arsenic is required for the synthesis of A<sup>III</sup>B<sup>V</sup> compounds and their solid solutions, which serve as the basis for semiconductor heteroepitaxial structures used in optoelectronics, laser technology, solar energy and microelectronics. In this regard, calorimetric studies were conducted to examine the effects of temperature and arsenic acid concentration on the thermal properties (specific heat capacity, thermal conductivity and thermal diffusivity) of solutions in the H<sub>3</sub>AsO<sub>4</sub>–H<sub>2</sub>O system over a wide range of temperatures (20–80°C) and H<sub>3</sub>AsO<sub>4</sub> concentrations (18.95–81.45 wt %). The obtained data may be useful for designing the arsine electrochemical synthesis for the subsequent high-purity arsenic production.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"56 - 61"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145533","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
Air Purification in a 3D Printer Environment 3D打印机环境下的空气净化
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700022
A. V. Kapitanov, I. A. Pigarev, N. N. Khrapko, T. N. Patrusheva
{"title":"Air Purification in a 3D Printer Environment","authors":"A. V. Kapitanov,&nbsp;I. A. Pigarev,&nbsp;N. N. Khrapko,&nbsp;T. N. Patrusheva","doi":"10.1134/S0040579525700022","DOIUrl":"10.1134/S0040579525700022","url":null,"abstract":"<p>3D printers, which primarily use polymer materials as raw feedstock, have become widely used and are often operated in enclosed spaces. However, only a limited number of users pay sufficient attention to ventilation. When polymers are heated, various gaseous compounds such as styrene, butadiene, and others are released, which have a strong characteristic odor and may adversely affect users’ health. This article examines an extraction-pyrolytic method for depositing photocatalytic titanium oxide onto a metal mesh. The results of studies on the crystalline structure and microstructure of the obtained oxide films are presented. Technological conditions for forming the most active anatase phase, as well as a nanostructured titanium oxide film with the largest surface area, have been determined.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"4 - 8"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145539","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
Continuous Technological Processes during Processing of SNF for a Closed Nuclear-Fuel Cycle 闭式核燃料循环SNF处理过程中的连续工艺过程
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700319
Yu. S. Mochalov, A. A. Zherebtsov, A. E. Usmanov, A. N. Rybakov, K. N. Dvoeglazov
{"title":"Continuous Technological Processes during Processing of SNF for a Closed Nuclear-Fuel Cycle","authors":"Yu. S. Mochalov,&nbsp;A. A. Zherebtsov,&nbsp;A. E. Usmanov,&nbsp;A. N. Rybakov,&nbsp;K. N. Dvoeglazov","doi":"10.1134/S0040579525700319","DOIUrl":"10.1134/S0040579525700319","url":null,"abstract":"<p>The necessity of developing new continuous-action devices under conditions of limited overall dimensions for nuclear safety is substantiated. Based on the completed cyclograms of the periodically operating apparatuses, a graph of the stages of SNF processing is constructed with the selection of the limiting stages without duplicating the devices. The draft designs of continuous-action apparatuses of the main technological conversions in the technology of a closed nuclear-fuel cycle have been developed.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"174 - 181"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145544","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
Photoluminescence of Structures on Porous Silicon Obtained by Electrochemical Etching with Exposure to Light in Different Spectral Regions 不同光谱区暴露在电化学蚀刻多孔硅上的结构的光致发光
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700046
O. V. Semenova, A. Ya. Korets, T. N. Patrusheva, M. Yu. Railko
{"title":"Photoluminescence of Structures on Porous Silicon Obtained by Electrochemical Etching with Exposure to Light in Different Spectral Regions","authors":"O. V. Semenova,&nbsp;A. Ya. Korets,&nbsp;T. N. Patrusheva,&nbsp;M. Yu. Railko","doi":"10.1134/S0040579525700046","DOIUrl":"10.1134/S0040579525700046","url":null,"abstract":"<p>This work focuses on the effect of different additional irradiation sources on the optical properties of porous silicon. Samples were obtained using the standard electrochemical anodization (etching) technique in a hydrofluoric acid solution from monocrystalline silicon wafers. Differences were observed in the photoluminescence spectra of three series of samples subjected to different spectral irradiation. The results show that by using various types of additional light sources during the electrochemical etching process, the photoluminescence spectrum peak of porous silicon can be tuned within the wavelength range of 400–850 nm.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"20 - 23"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145030","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
Synthesis and Study of Double NaYP2O7 Phosphates Doped with Rare-Earth Elements 稀土元素掺杂双磷酸盐NaYP2O7的合成与研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-06-27 DOI: 10.1134/S0040579525700290
N. I. Steblevskaya, M. V. Belobeletskaya, M. A. Medkov
{"title":"Synthesis and Study of Double NaYP2O7 Phosphates Doped with Rare-Earth Elements","authors":"N. I. Steblevskaya,&nbsp;M. V. Belobeletskaya,&nbsp;M. A. Medkov","doi":"10.1134/S0040579525700290","DOIUrl":"10.1134/S0040579525700290","url":null,"abstract":"<div><p>The synthesis of double phosphates of different composition NaY<sub>1–<i>x</i></sub>Eu<sub><i>x</i></sub>P<sub>2</sub>O<sub>7</sub> and NaY<sub>1–<i>x</i></sub>Tb<sub><i>x</i></sub>P<sub>2</sub>O<sub>7</sub> (<i>х</i> = 0, 0.025, 0.05, 0.075, 0.1) is technologically implemented by using a solution or extract of initial component in a rosin melt. The compounds are characterized by X-ray diffraction analysis and luminescence spectroscopy. The monoclinic NaYP<sub>2</sub>O<sub>7</sub> polymorph structure is retained after doping with Eu<sup>3+</sup> and Tb<sup>3+</sup> ions. The NaY<sub>1–<i>x</i></sub>Eu<sub><i>x</i></sub>P<sub>2</sub>O<sub>7</sub> luminescence excitation spectra (λ<sub>em</sub> = 615 nm) contain the intense broad band from the charge transfer О<sup>2–</sup> → Eu<sup>3+</sup> at λ<sub>max</sub> = 260 nm. In the NaY<sub>1–<i>x</i></sub>Tb<sub><i>x</i></sub>P<sub>2</sub>O<sub>7</sub> luminescence excitation spectrum (λ<sub>em</sub> = 545 nm), the most intense band at ~235 nm is produced by the transition 4<i>f</i><sub>8</sub> → 4<i>f</i>  <sup>7</sup> 5<i>d</i><sup>1</sup> in the Tb<sup>3+</sup> ion. Double europium phosphates NaY<sub>1–<i>x</i></sub>Eu<sub><i>x</i></sub>P<sub>2</sub>O<sub>7</sub> luminesce in the region of 550–750 nm under excitation at λ<sub>ex</sub> = 260 nm, and the luminescence of phosphates NaY<sub>1–<i>x</i></sub>Tb<sub><i>x</i></sub>P<sub>2</sub>O<sub>7</sub> occurs in the region of 530–565 nm at λ<sub>ex</sub> = 235 nm. The highest integral luminescence intensity is demonstrated by NaY<sub>0.95</sub>Eu<sub>0.05</sub>P<sub>2</sub>O<sub>7</sub> and NaY<sub>0.95</sub>Tb<sub>0.05</sub>P<sub>2</sub>O<sub>7</sub>.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 1","pages":"162 - 167"},"PeriodicalIF":0.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145033","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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