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Chemical Destruction of Tokem-308 Cationite (Analog of KU-2x8) in the HNO3(vapor)–Air Atmosphere Tokem-308 阳离子石（KU-2x8 的类似物）在 HNO3（蒸汽）- 空气气氛中的化学破坏
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700556
S. A. Kulyukhin, A. V. Gordeev, E. P. Krasavina, Yu. M. Nevolin, A. M. Novoselov
{"title":"Chemical Destruction of Tokem-308 Cationite (Analog of KU-2x8) in the HNO3(vapor)–Air Atmosphere","authors":"S. A. Kulyukhin,&nbsp;A. V. Gordeev,&nbsp;E. P. Krasavina,&nbsp;Yu. M. Nevolin,&nbsp;A. M. Novoselov","doi":"10.1134/S0040579524700556","DOIUrl":"10.1134/S0040579524700556","url":null,"abstract":"<p>The chemical transformation of the Tokem-308 cationite (analog of KU-2x8) in an HNO<sub>3</sub>(vapor)–air atmosphere obtained as a result of vaporization of 12 M HNO<sub>3</sub> is described. The gas-phase treatment of Tokem-308 samples in this atmosphere at 403–443 K for 4–24 h changes some of their physical (mass, color, etc.) and chemical (solubility in H<sub>2</sub>O, NaOH, C<sub>2</sub>H<sub>5</sub>OH, acetone) properties. 2,4-Dinitrophenylacetic acid and <i>para-</i>nitrobenzoic acid were found among the products of the transformation of the Tokem-308 resin in the HNO<sub>3</sub>(vapor)–air atmosphere.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 2","pages":"334 - 340"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826320","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
Processing of Sludge Waste to Produce Ceramic Materials 处理污泥废料以生产陶瓷材料
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700088
M. O. Moldurushku, N. I. Kopylov, B. K. Kara-Sal
{"title":"Processing of Sludge Waste to Produce Ceramic Materials","authors":"M. O. Moldurushku,&nbsp;N. I. Kopylov,&nbsp;B. K. Kara-Sal","doi":"10.1134/S0040579524700088","DOIUrl":"10.1134/S0040579524700088","url":null,"abstract":"<div><p>A ceramic material based on clay with sludge waste from the Tuvacobalt Plant is obtained. The highest strength of the samples is observed at a charge firing temperature of 900°C, which is possibly due to the presence in the sample of refractory materials: quartz, plagioclase (albite), akermanite, and clinoenstatite, forming strong binding structures. By mixing the waste with the clay, the arsenic content in the samples is reduced up to four times compared to the sludge. It is established that arsenic is not washed out from the ceramic samples obtained by firing a mixture of clay with sludge.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 1","pages":"33 - 37"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826373","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 Organic Contaminants from Wastewater by Electrochemical Oxidation 用电化学氧化法去除废水中的有机污染物
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S004057952470012X
P. G. Zelenin, V. V. Milyutin, V. M. Bakhir, I. V. Kozlov
{"title":"Removal of Organic Contaminants from Wastewater by Electrochemical Oxidation","authors":"P. G. Zelenin,&nbsp;V. V. Milyutin,&nbsp;V. M. Bakhir,&nbsp;I. V. Kozlov","doi":"10.1134/S004057952470012X","DOIUrl":"10.1134/S004057952470012X","url":null,"abstract":"<div><p>Experiments were carried out to remove various organic compounds (oxalic and ethylenediaminetetraacetic acids, and anionic and nonionic surfactants) by electrochemical anodic oxidation. The experiments were performed in an MB-11T-06 flow-through diaphragm electrochemical reactor manufactured by the Russian company ZAO Vitold Bakhir Institute of Electrochemical Systems and Technologies. It was shown that the electrochemical anodic oxidation is the most effective if the solution being treated contains chloride ions at a concentration of 0.5–1.0 g/dm<sup>3</sup>. Under these conditions, almost complete oxidation of the above organic substances is achieved. It was concluded that the method of electrochemical oxidation using flow-through diaphragm electrochemical reactors manufactured by the Russian company ZAO Vitold Bakhir Institute of Electrochemical Systems and Technologies is very promising for the removal of a wide range of organic substances from industrial wastewater, as well as liquid radioactive waste.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 1","pages":"54 - 59"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826366","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 Production of “Green” Hydrogen (a Review) 生产 "绿色 "氢气的问题和前景（综述）
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700611
E. A. Chistyakova, M. O. Orlov, D. A. Moiseenkova, N. A. Nazarov, A. K. Osipov
{"title":"Problems and Prospects of Production of “Green” Hydrogen (a Review)","authors":"E. A. Chistyakova,&nbsp;M. O. Orlov,&nbsp;D. A. Moiseenkova,&nbsp;N. A. Nazarov,&nbsp;A. K. Osipov","doi":"10.1134/S0040579524700611","DOIUrl":"10.1134/S0040579524700611","url":null,"abstract":"<div><p>Every year, an increasing number of scientific research projects are devoted to the problem of the use of alternative feedstock sources, as well as low-carbon energy. Special attention of researchers is paid to the problem of production of “green” hydrogen because it is a promising carbon-free alternative to conventional fuel types. However, currently, among the great variety of its production methods, there is none that meets all the requirements imposed by modern industry. In light of this, the authors perform a brief review of recent publications devoted to new production methods of “green” hydrogen from various feedstocks.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 2","pages":"370 - 378"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826408","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
Flow Structure of Bead Mills with a Centrifugal System for Separating Beads from a Crushed Suspension 从粉碎的悬浮液中分离微珠的带有离心系统的微珠研磨机的流动结构
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700787
G. A. Nosov, L. S. Elinevskaya, R. N. Ivanov, A. A. Semenyachenko
{"title":"Flow Structure of Bead Mills with a Centrifugal System for Separating Beads from a Crushed Suspension","authors":"G. A. Nosov,&nbsp;L. S. Elinevskaya,&nbsp;R. N. Ivanov,&nbsp;A. A. Semenyachenko","doi":"10.1134/S0040579524700787","DOIUrl":"10.1134/S0040579524700787","url":null,"abstract":"<div><p>The results of studies of the flow structure of a horizontal bead mill with a centrifugal system for separating bead particles from a ground suspension are presented. Diffusion, cellular, and recirculation flow-structure models are used to describe the residence time of the dispersed material in the bead mill. To determine the parameters of these models, <i>F</i>-response curves are used, which are obtained by the stepwise perturbation method under various operating conditions of the mill. As a result of the research, it is established that the structure of the flows of bead mills of this design is best described by the recirculation model.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 2","pages":"475 - 479"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826454","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 Na, Si, and P on the Phase Composition of Zirconium and Sodium Silicophosphates (NASICON) Na、Si 和 P 对锆和硅磷酸钠相组成的影响 (NASICON)
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700428
D. N. Grishchenko, M. A. Medkov
{"title":"The Effect of Na, Si, and P on the Phase Composition of Zirconium and Sodium Silicophosphates (NASICON)","authors":"D. N. Grishchenko,&nbsp;M. A. Medkov","doi":"10.1134/S0040579524700428","DOIUrl":"10.1134/S0040579524700428","url":null,"abstract":"<p>The effect of the excess of Na, Si, and P on the composition of Na<sub>1 +</sub> <sub><i>x</i></sub>Zr<sub>2</sub>P<sub>3 –</sub> <sub><i>x</i></sub>Si<sub><i>x</i></sub>O<sub>12</sub> (0 ≤ <i>x</i> ≤ 3) silicophosphates is studied; the samples are obtained by the pyrolysis of organic solutions in a rosin melt. The samples are studied by x-ray diffraction analysis, scanning electron microscopy, and the Rietveld method. It is established that specific concentrations of Na, Si, and P additives affect the impurity content in the synthesis products and change the phase composition of Na<sub>1 +</sub> <sub><i>x</i></sub>Zr<sub>2</sub>P<sub>3 –</sub> <sub><i>x</i></sub>Si<sub><i>x</i></sub>O<sub>12</sub>.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 2","pages":"261 - 265"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826460","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
Rates of Formation of Silaethylene and the Methyl and Silyl Radicals by the Pyrolysis of Methylsilane 甲基硅烷热解生成硅乙烯及甲基和硅基自由基的速率
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700519
D. V. Sidorov, A. D. Kirilin, A. A. Shavnev
{"title":"Rates of Formation of Silaethylene and the Methyl and Silyl Radicals by the Pyrolysis of Methylsilane","authors":"D. V. Sidorov,&nbsp;A. D. Kirilin,&nbsp;A. A. Shavnev","doi":"10.1134/S0040579524700519","DOIUrl":"10.1134/S0040579524700519","url":null,"abstract":"<div><p>A quantum chemical study of the rates of chemical reactions of formation of silaethylene and the methyl and silyl radicals by the pyrolysis of methylsilane in the gas phase was performed. The geometry and thermodynamic characteristics of the compounds participating in the chemical reactions were calculated by an ab initio method according to the second-order Møller–Plesset perturbation theory with the 6–31+G basis set at temperatures up to 2700 K. The equilibrium constants and rates of the studied reactions were calculated, and so were the pre-exponential factor and activation energy for the Arrhenius equation.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 2","pages":"308 - 315"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826476","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
Estimation of Radiation Effect on the Process Parameters upon Extraction of Cm and Am by Displacement Complexation Chromatography 用置换络合色谱法提取铯和氨时辐射对工艺参数的影响估算
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700313
O. V. Kharitonov, L. A. Firsova
{"title":"Estimation of Radiation Effect on the Process Parameters upon Extraction of Cm and Am by Displacement Complexation Chromatography","authors":"O. V. Kharitonov,&nbsp;L. A. Firsova","doi":"10.1134/S0040579524700313","DOIUrl":"10.1134/S0040579524700313","url":null,"abstract":"<div><p><b>Abstract</b>—Radiation loads on the sorbent and eluent upon extraction of Cm and Am by displacement complexation chromatography from complex-composition solutions using an eluent containing DTPA and citric acid are calculated. The destruction of the eluent and sorbent in the columns is estimated. Good agreement is obtained between the calculation and experimental data on the concentrations and rate of curium band motion through the column.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 1","pages":"182 - 187"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826243","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
On the Possibility of Using Silicon Dioxide Obtained from Mineral Raw Materials as an Enterosorbent 浅谈从矿物原料中提取二氧化硅作为吸附剂的可能性
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-12-16 DOI: 10.1134/S0040579524700209
D. V. Maiorov, Yu. O. Velyaev
{"title":"On the Possibility of Using Silicon Dioxide Obtained from Mineral Raw Materials as an Enterosorbent","authors":"D. V. Maiorov,&nbsp;Yu. O. Velyaev","doi":"10.1134/S0040579524700209","DOIUrl":"10.1134/S0040579524700209","url":null,"abstract":"<div><p>Samples of amorphous silicon dioxide (SiO<sub>2</sub>) are obtained by acidic decomposition of mineral raw materials (nepheline). The physicochemical and structural surface properties of the samples are studied using chemical and granulometric analyses and the BET and BJH methods. It is established that the obtained SiO<sub>2</sub> samples are almost identical to pyrogenic amorphous silicon dioxide obtained from reactive raw materials (pharmaceutical remedy Polysorb MP) in impurity content and have higher specific external surface area (by a factor of 1.1–1.9) and specific pore volume (by factor of about 1.4) compared to Polysorb MP. An economic assessment of their production cost is performed, which shows that the cost of silicon dioxide obtained by the developed technologies is more than two times lower than the cost of commercial pyrogenic silicon dioxide that is present in the market. Based on the obtained results, we discuss the prospects of using silicon dioxide obtained on the basis of acidic treatment of mineral raw materials as an enterosorbent in therapeutic practice.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"58 1","pages":"101 - 108"},"PeriodicalIF":0.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826271","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
Energodynamics of Radiation and the Chemical Bonding as a Resonant-Selective Interaction 辐射能量动力学和作为共振-选择性相互作用的化学键
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-03-10 DOI: 10.1134/S0040579523060027
I. N. Dorokhov
{"title":"Energodynamics of Radiation and the Chemical Bonding as a Resonant-Selective Interaction","authors":"I. N. Dorokhov","doi":"10.1134/S0040579523060027","DOIUrl":"10.1134/S0040579523060027","url":null,"abstract":"<p>The myth about special quantum mechanics, different from classical mechanics, has been debunked. In fact, there is a branch of classical mechanics, which belongs to wave theory and considers a particle-like wave, rather than a particle having the properties of a wave. New quantum mechanics, free from unnecessary entities, assumptions, and hypotheses, makes it possible to get rid of many accumulated contradictions in theoretical physics, physical chemistry, and quantum chemistry and expands the methodological base of engineering disciplines by opening up new ways and means for solving practical problems, as shown by the example of consideration of chemical bonding as a resonant-selective interaction.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"57 6","pages":"1338 - 1349"},"PeriodicalIF":0.7,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097813","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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