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Deep Oxidation of Toluene on Glass Fiber Catalysts in Structured Cartridges of Various Geometries 甲苯在玻璃纤维催化剂上在不同几何形状的结构筒体上的深度氧化
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700035
D. V. Baranov, A. V. Elyshev, S. A. Lopatin, A. N. Zagoruiko
{"title":"Deep Oxidation of Toluene on Glass Fiber Catalysts in Structured Cartridges of Various Geometries","authors":"D. V. Baranov,&nbsp;A. V. Elyshev,&nbsp;S. A. Lopatin,&nbsp;A. N. Zagoruiko","doi":"10.1134/S2070050425700035","DOIUrl":"10.1134/S2070050425700035","url":null,"abstract":"<p>The paper is devoted to the study of platinum-containing glass fiber catalysts (GFCs) for deep oxidation of hydrocarbons, which can be used in the processes of cleaning exhaust gases from volatile organic impurities, as well as for environmentally friendly combustion of fuels. The influence of the catalyst synthesis method on its activity in the reaction of deep oxidation of toluene was studied. The highest specific activity per unit mass of Pt is demonstrated by the conventional GFC IK-12-C102 based on a preleached zirconium-containing support; however, in terms of total activity per unit volume of the cartridge and per unit mass of the catalyst, GFC IK-12-C111 produced by the surface thermal synthesis method is more efficient. Its slightly higher platinum content is compensated by the possibility of using a significantly lighter, cheaper, and more accessible support. It has been shown that applying the precursor solution to the support by spraying instead of impregnation ensures an increase in specific activity. In addition, the influence of such properties as the structure of the glass fiber support (satin and openwork weave) and the geometry of the arrangement of the catalyst layers relative to the flow of the reaction mixture on the apparent activity of GFCs was studied. It has been shown that the most effective for deep oxidation processes is the use of satin weave as a GFC support with longitudinal orientation of the catalyst layers relative to the flow of the reaction mixture. Criterial equations for assessing the hydraulic resistance of different types of GFC packages are proposed.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"112 - 120"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144449","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
Analysis of the Macrokinetics of CO2 Sorption on 10%NaNO3/MgO Sorbent and Modeling of an Adsorber with a Hydrogen Capacity of 10 kg/h 10%NaNO3/MgO吸附剂吸附CO2的宏观动力学分析及氢容量为10 kg/h吸附剂的建模
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700011
A. B. Shigarov, I. E. Nikulina, V. P. Pakharukova, D. I. Potemkin
{"title":"Analysis of the Macrokinetics of CO2 Sorption on 10%NaNO3/MgO Sorbent and Modeling of an Adsorber with a Hydrogen Capacity of 10 kg/h","authors":"A. B. Shigarov,&nbsp;I. E. Nikulina,&nbsp;V. P. Pakharukova,&nbsp;D. I. Potemkin","doi":"10.1134/S2070050425700011","DOIUrl":"10.1134/S2070050425700011","url":null,"abstract":"<p>This study proposes a first-order macrokinetic model for CO<sub>2</sub> sorption on a 10 mol % NaNO<sub>3</sub>/MgO sorbent. According to the experimental gravimetric data, the maximum sorption capacity of the 10 mol % NaNO<sub>3</sub>/MgO sorbent is determined and does not depend on the partial pressure of CO<sub>2</sub>; at 320°C it is equal to 159% (based on the initial mass of the sample) or 13.4 mmol CO<sub>2</sub>/g<sub>sorb</sub>. The calculated value of the sorption constant <i>k</i><sub>ads</sub> at temperatures of 280–320°C and a CO<sub>2</sub> partial pressure of 0.50–0.75 atm is 0.017 min<sup>–1</sup> atm<sup>–1</sup>. Based on the obtained kinetics, modeling of adiabatic and isothermal CO<sub>2</sub> adsorbers was performed within the framework of the technological scheme for producing 10 kg/h of hydrogen from natural gas at an operating pressure of 12 atm. The calculations showed that for the adsorber to function effectively intensive removal of the heat released during the sorption process is necessary. This allows for the sorption of CO<sub>2</sub> for 30 min at a temperature of 300°C and a gas hourly space velocity GHSV = 1170 h<sup>–1</sup>, while the concentration of CO<sub>2</sub> at the outlet in dry gas does not exceed 1.5 mol %.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"92 - 102"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144729","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
Kinetic Model of Selective Trimerization of Ethylene to Hexene-1 on Chromium-Pyrrole Catalyst 铬-吡咯催化剂上乙烯选择性三聚制己烯-1的动力学模型
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700047
P. I. Kul’chakovskii, V. S. Ermolaev, S. L. Saratovskikh, E. E. Faingol’d, I. V. Sedov, A. A. Biktimirov, D. A. Lenev
{"title":"Kinetic Model of Selective Trimerization of Ethylene to Hexene-1 on Chromium-Pyrrole Catalyst","authors":"P. I. Kul’chakovskii,&nbsp;V. S. Ermolaev,&nbsp;S. L. Saratovskikh,&nbsp;E. E. Faingol’d,&nbsp;I. V. Sedov,&nbsp;A. A. Biktimirov,&nbsp;D. A. Lenev","doi":"10.1134/S2070050425700047","DOIUrl":"10.1134/S2070050425700047","url":null,"abstract":"<p>The results of an experimental study of the reaction of ethylene trimerization to 1-hexene on a chromium-pyrrole catalyst are presented. The studies were carried out in the range of pressures of 18–30 bar, temperatures of 105–20°C, and catalyst concentrations of 1.165–3.500 mg/L. A mathematical model of the used semiflow reactor is also presented. A route is proposed to describe the observed reaction products. The rate constants of the elementary stages of the process are determined by solving the inverse kinetic problem. The dependences of the ethylene absorption curves on the reaction conditions, pressure, temperature and catalyst concentration, as well as the change in the degree of ethylene over the course of the experiment are analyzed.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"121 - 132"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144730","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
Improving the Mathematical Model of the Catalytic Reforming Process with a Fixed Catalyst Bed 改进固定床催化重整过程数学模型
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700072
I. V. Pchelintseva, E. N. Ivashkina, E. S. Chernyakova, D. B. Tazhmulikov, V. A. Chyuzlov
{"title":"Improving the Mathematical Model of the Catalytic Reforming Process with a Fixed Catalyst Bed","authors":"I. V. Pchelintseva,&nbsp;E. N. Ivashkina,&nbsp;E. S. Chernyakova,&nbsp;D. B. Tazhmulikov,&nbsp;V. A. Chyuzlov","doi":"10.1134/S2070050425700072","DOIUrl":"10.1134/S2070050425700072","url":null,"abstract":"<p>A mathematical model that adequately describes the process of catalytic reforming—the main industrial technology for obtaining high-octane components of motor fuels in Russia and abroad is presented. The necessity of expanding the existing scheme of transformations of hydrocarbons of the gasoline series to create a model of reforming feedstocks of various origins (gasoline fractions of thermal destructive processes, hydrocracking naphtha, gas condensate) is shown. Based on the results of experimental studies using gas chromatography, as well as the calculations of thermodynamic parameters, an improved formalized reaction scheme has been compiled to take into account into account reactions involving unsaturated hydrocarbons. A kinetic model of the reforming process of the expanded gasoline fraction has been compiled. To describe the kinetic model based on the formalized scheme of hydrocarbon transformations, a matrix method was used, which makes the model more flexible to the composition of the feedstock.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"162 - 176"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144448","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
Block Catalysts Based on Ce and Mn Oxides and Cordierite Ceramics for Ozone Decomposition 基于铈锰氧化物和堇青石陶瓷的臭氧分解嵌段催化剂
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700023
M. V. Chernykh, G. V. Mamontov
{"title":"Block Catalysts Based on Ce and Mn Oxides and Cordierite Ceramics for Ozone Decomposition","authors":"M. V. Chernykh,&nbsp;G. V. Mamontov","doi":"10.1134/S2070050425700023","DOIUrl":"10.1134/S2070050425700023","url":null,"abstract":"<p>The effect of the ratio of Ce and Mn oxides supported on cordierite ceramics on the structure and catalytic activity in the ozone decomposition reaction at room temperature was studied. The catalysts were prepared by impregnating cordierite ceramic blocks with citric acid at varying atomic ratios Ce : Mn. The physicochemical characteristics of the catalysts were studied using low-temperature nitrogen adsorption, X-ray phase analysis, scanning electron microscopy, and H<sub>2</sub> temperature-programmed reduction, and the catalytic activity of the samples in ozone decomposition was tested at high flow rate (20–50 L/min) and an initial O<sub>3</sub> concentration of 1–2 ppm. It has been shown that mixed oxide Ce–Mn catalysts are more active than catalysts based on individual Ce and Mn oxides. The activity passes through a maximum at the atomic ratio Ce : Mn = 1 : 2, which is due to the highly dispersed state of the supported oxides.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"103 - 111"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144733","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
Effect of Fe/Cr Ratio on the Catalytic Activity of FeCr/C Catalysts in the Process of Oxidative Dehydrogenation of Ethane Fe/Cr比对乙烷氧化脱氢过程中FeCr/C催化剂催化活性的影响
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700060
I. I. Mishanin, T. V. Bogdan, T. V. Fedoseev, M. A. Skiba, P. A. Chernavskii, A. E. Koklin, K. I. Maslakov, V. I. Bogdan
{"title":"Effect of Fe/Cr Ratio on the Catalytic Activity of FeCr/C Catalysts in the Process of Oxidative Dehydrogenation of Ethane","authors":"I. I. Mishanin,&nbsp;T. V. Bogdan,&nbsp;T. V. Fedoseev,&nbsp;M. A. Skiba,&nbsp;P. A. Chernavskii,&nbsp;A. E. Koklin,&nbsp;K. I. Maslakov,&nbsp;V. I. Bogdan","doi":"10.1134/S2070050425700060","DOIUrl":"10.1134/S2070050425700060","url":null,"abstract":"<p>The influence of the ratio of active components (Fe and Cr) on the catalytic activity of FeCr/C catalysts in the oxidative dehydrogenation of ethane with CO<sub>2</sub> was analyzed. The best results were achieved on the 2Fe3.7Cr/C catalyst, in which the Fe : Cr ratio corresponded to the stoichiometry of iron(II) chromite FeCr<sub>2</sub>O<sub>4</sub>. The physicochemical characteristics of the prepared catalysts were determined and analyzed (XRD, XPS, magnetometry). Based on the totality of the data obtained, it is possible to assume the presence of the iron(II) chromite phase.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"157 - 161"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144451","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
Studying the Synthesis of Nitrous Oxide in a Microstructured Split-Flow Reactor 微结构分流反应器合成氧化亚氮的研究
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700084
A. G. Sheboltasov, N. V. Vernikovskaya, V. A. Chumachenko
{"title":"Studying the Synthesis of Nitrous Oxide in a Microstructured Split-Flow Reactor","authors":"A. G. Sheboltasov,&nbsp;N. V. Vernikovskaya,&nbsp;V. A. Chumachenko","doi":"10.1134/S2070050425700084","DOIUrl":"10.1134/S2070050425700084","url":null,"abstract":"<p>This work is devoted to the mathematical modeling of N<sub>2</sub>O synthesis via NH<sub>3</sub> oxidation on a Mn/Bi/Al oxide catalyst in a microstructured split-flow reactor (MSR). The characteristics of the process are studied at different linear flow velocities, inlet ammonia concentrations, and reactor edge temperatures. Parameters are determined that endure an efficient process in the microstructured reactor under thermally admissible conditions. The possibility is shown of scaling the MSR by multiplying its geometric dimensions with no overheating in the reaction zone. Results show that in a microstructured reactor with such a configuration, the capacity for producing N<sub>2</sub>О can be increased by around 12 times, relative to the best performance characteristics of a conventional microreactor, and the catalyst’s specific production capacity is approximately 1.5 times higher than in a traditional tubular reactor. This allows the creation of low-tonnage plants for producing high-purity nitrous oxide for different applications by scaling microreactor systems. The results in this work correspond to the concept of distributed chemicalization and contribute to overcoming the barrier between laboratory catalytic reactors and industrial-level devices.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"177 - 191"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144731","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
SPECIAL ISSUE BASED ON THE CHEMREACTOR-25 XXV INTERNATIONAL CONFERENCE ON CHEMICAL REACTORS 基于化学反应器的特刊-25第二十五届国际化学反应器会议
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700096
{"title":"SPECIAL ISSUE BASED ON THE CHEMREACTOR-25 XXV INTERNATIONAL CONFERENCE ON CHEMICAL REACTORS","authors":"","doi":"10.1134/S2070050425700096","DOIUrl":"10.1134/S2070050425700096","url":null,"abstract":"","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"91 - 91"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144450","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
Heterogeneous Hydrogenation and Isomerization of Carbocyclic Compounds of the Norbornene Series: A Review 降冰片烯系列碳环化合物的非均相加氢和异构化研究进展
IF 1.3
Catalysis in Industry Pub Date : 2025-06-24 DOI: 10.1134/S2070050425700059
V. V. Zamalyutin, E. V. Okuneva, S. S. Moskvichev, V. R. Flid
{"title":"Heterogeneous Hydrogenation and Isomerization of Carbocyclic Compounds of the Norbornene Series: A Review","authors":"V. V. Zamalyutin,&nbsp;E. V. Okuneva,&nbsp;S. S. Moskvichev,&nbsp;V. R. Flid","doi":"10.1134/S2070050425700059","DOIUrl":"10.1134/S2070050425700059","url":null,"abstract":"<p>The main laws and routes of the liquid-phase hydrogenation and isomerization of carbocyclic alkenes and dienes of the norbornene series in the presence of heterogeneous catalysts were systematized, and the reaction mechanisms were discussed. The reaction products were identified and the material balance was studied. Conditions for the hydrogenation and isomerization of the compounds were selected such as to provide the preservation of the norbornane framework. The reactivity of multiple bonds in norbornenes was assessed by experimental and quantum chemical methods. Adequate kinetic models of the processes in terms of the Langmuir–Hinshelwood approach and in the representation of multiple adsorption of substrates on a single active site were developed.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 2","pages":"133 - 156"},"PeriodicalIF":1.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144732","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
Studying the Main Laws Governing the Base-Catalyzed Glycolysis of Polycarbonate Plastics 碱催化聚碳酸酯塑料糖酵解的主要规律研究
IF 0.7
Catalysis in Industry Pub Date : 2025-05-23 DOI: 10.1134/S2070050424700405
T. A. Kurneshova, V. N. Sapunov, M. P. Sergeenkova, G. V. Dzhabarov, E. V. Varlamova, M. S. Voronov, R. A. Kozlovskii, E. P. Antoshkina
{"title":"Studying the Main Laws Governing the Base-Catalyzed Glycolysis of Polycarbonate Plastics","authors":"T. A. Kurneshova,&nbsp;V. N. Sapunov,&nbsp;M. P. Sergeenkova,&nbsp;G. V. Dzhabarov,&nbsp;E. V. Varlamova,&nbsp;M. S. Voronov,&nbsp;R. A. Kozlovskii,&nbsp;E. P. Antoshkina","doi":"10.1134/S2070050424700405","DOIUrl":"10.1134/S2070050424700405","url":null,"abstract":"<p>This study is focused on the effect of various base catalysts on the glycolysis of plastics based on bisphenol A (BPA) polycarbonate (PC). It has been found that the chemical degradation of PC under the action of ethylene glycol (EG) leads to the formation of the following high-added value products: BPA (PC monomer) and BPA–ethylene carbonate (EC)/(EG) co-ethers (monohydroxyethyl ether of BPA (MHE-BPA), bishydroxyethyl ether of BPA (BHE-BPA)). A quantitative assessment of the reaction product yields has been conducted. It has been found that, at a 100% PC conversion, the product yields are the following (%): BPA, 33; MHE-BPA, 50; and BHE-BPA, 17. In addition, the efficiencies of using various alkaline agents as a catalyst depending on the type of metal have been compared in this study.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"17 1","pages":"56 - 65"},"PeriodicalIF":0.7,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117595","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
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