Catalysis in Industry最新文献_第4页

Effect of Water-Soluble Polymers on the Dynamics of Carbon Dioxide Sorption by Lime-Based Sorbents 水溶性聚合物对石灰基吸附剂吸附二氧化碳动力学的影响

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040062

V. S. Derevshchikov, O. Yu. Selyutina

引用次数: 0

Catalysis in the Automotive Industry: Mutual Development and State-of-the-Art 汽车工业中的催化作用：共同发展与技术现状

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040050

S. P. Denisov, E. A. Alikin, E. O. Baksheev, V. N. Rychkov

引用次数: 0

Transformation of Amorphous Aluminum Oxide in the Catalytic Dehydration of Aromatic Alcohol 无定形氧化铝在芳香族酒精催化脱水过程中的转变

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040049

A. V. Boretskaya, M. I. Farid, S. R. Egorova, A. A. Lamberov

{"title":"Transformation of Amorphous Aluminum Oxide in the Catalytic Dehydration of Aromatic Alcohol","authors":"A. V. Boretskaya, M. I. Farid, S. R. Egorova, A. A. Lamberov","doi":"10.1134/S2070050423040049","DOIUrl":"10.1134/S2070050423040049","url":null,"abstract":"The widespread use of aluminum oxides to synthesize heterogeneous catalysts in petroleum chemistry and oil refining makes it necessary to determine the factors that influence the efficiency of catalytic systems. However, there have been no studies on the effect of amorphous aluminum oxide in aluminum oxide catalysts on the characteristics of a catalytic reaction. The amount of amorphous aluminum hydroxides and oxides is generally not certified, but they can considerably worsen the performance of a catalyst. Amorphous aluminum oxide samples obtained from two different precursors are studied in this work via X-ray phase analysis, low-temperature nitrogen adsorption, electron microscopy, and thermally programmed desorption of ammonia. The catalytic properties of the samples are studied in the vapor phase dehydration of 1-phenylethanol to styrene. It is shown for the first time that the transformation of amorphous aluminum oxide during the catalytic reaction lowers the conversion of alcohol from 84 (for a fresh catalyst) to 64% (for a regenerated sample). The crystallization of amorphous aluminum oxide through high temperature treatment contributes to an increase in catalytic indicators. However, they do not reach the required values because of a strong drop in the textural characteristics and acidic properties of an aluminum oxide surface.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"387 - 396"},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053505","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 the Structure and Acidity of Zeolites on the Synthesis of Solketal from Glycerol and Acetone 沸石的结构和酸度对甘油和丙酮合成 Solketal 的影响

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S207005042304013X

O. N. Kovalenko, I. I. Simentsova, V. N. Panchenko, M. N. Timofeeva

引用次数: 0

Effect of the Nature of Supports and the Degree of Palladium Dispersion on the Catalyst Activity and Selectivity in the Sunflower Oil Hydrogenation Reaction 载体性质和钯分散程度对葵花籽油加氢反应中催化剂活性和选择性的影响

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040098

A. V. Romanenko, P. A. Simonov, M. A. Kulagina, S. I. Udalova, I. N. Voropaev, G. A. Bukhtiyarova

引用次数: 0

Silica- and Alumina-Supported Sulfated Zirconia Catalysts for Hexane Isomerization: Effect of the Support Nature 用于己烷异构化的二氧化硅和氧化铝支撑硫酸化氧化锆催化剂：支撑性质的影响

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040116

M. D. Smolikov, L. I. Bikmetova, K. V. Kazantsev, V. A. Skurenok, S. S. Yablokova, A. V. Lavrenov

{"title":"Silica- and Alumina-Supported Sulfated Zirconia Catalysts for Hexane Isomerization: Effect of the Support Nature","authors":"M. D. Smolikov, L. I. Bikmetova, K. V. Kazantsev, V. A. Skurenok, S. S. Yablokova, A. V. Lavrenov","doi":"10.1134/S2070050423040116","DOIUrl":"10.1134/S2070050423040116","url":null,"abstract":"The effect of the support nature on the hexane isomerization reaction parameters for SiO2- and Al2O3-supported sulfated zirconia catalysts with different textural characteristics has been studied. It has been shown that a higher hexane conversion is achieved in the presence of sulfated zirconia catalysts supported on aluminas. Using IR spectroscopy of adsorbed CO, it has been found that, in the Al2O3-supported catalysts, the concentration of Brønsted acid sites (BAS) characterized by adsorbed CO with an absorption band at 2170 cm–1 and strong Lewis acid sites (LAS) characterized by adsorbed CO with absorption bands at 2210 and 2224 cm–1 is higher than that in the SiO2-supported catalysts. In the Al2O3-supported catalysts with different textural characteristics, an increase in the contribution of LAS to the total acidity leads to a significant increase in the high-octane 2,2-dimethylbutane yield and the hexane isomerization depth.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"350 - 356"},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053781","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

The Influence of Test Conditions for the Second Hydrocracking Stage Catalysts on the Time to Reach Steady-State Activity 第二加氢裂化阶段催化剂试验条件对达到稳态活性时间的影响

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040074

I. S. Golubev, P. P. Dik, M. O. Kazakov, O. V. Klimov, A. S. Noskov

引用次数: 0

Ru-Bentonite Catalyzed Green Knoevenagel Condensation of Substituted Benzaldehydes with Ethyl Cyanoacetate Ru-Bentonite 催化取代苯甲醛与氰乙酸乙酯的绿色克诺文纳格尔缩合反应

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040141

Debasis Borah, Deepmoni Brahma, Dipanwita Basak, Hemaprobha Saikia

{"title":"Ru-Bentonite Catalyzed Green Knoevenagel Condensation of Substituted Benzaldehydes with Ethyl Cyanoacetate","authors":"Debasis Borah, Deepmoni Brahma,  Dipanwita Basak, Hemaprobha Saikia","doi":"10.1134/S2070050423040141","DOIUrl":"10.1134/S2070050423040141","url":null,"abstract":"To develop Ru-incorporated bentonite clay as a heterogeneous base catalyst for use in Knoevenagel condensation as an alternative to hazardous base catalysts like pyridine, piperidine, etc., we purify the naturally occurring bentonite clay and Ru3+ cation incorporated into its interlayers of bentonite clayto improve its porosity and to increase the surface area of bentonite clay. Purified bentonite and Ru-bentonite were characterized by FTIR, PXRD, HRTEM, SEM & EDS, BET surface area analysis, and TGA. Base activation was done to these clays and a comparative study of these clays as recyclable heterogeneous catalysts for Knoevenagel Condensation was undertaken in water as a solvent for the chemical transformation of 2,4-dichlorobenzaldehyde and 4-hydroxybenzaldehyde with ethyl cyanoacetateinto their corresponding α,β- unsaturated acids. The products were characterized by FTIR, 1H NMR, and 13C NMR analyses. The essential key points of this reaction are mild reaction conditions, absence of hazardous chemicals as used in classical Knoevenagel condensation, reusability of the catalyst, and high yield percentage of the products.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"420 - 433"},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053562","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

Assessment of the Efficiency of Catalysts for the Catalytic Pyrolysis of Polyethylene 聚乙烯催化热解催化剂效率评估

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040086

V. B. Kharitontsev, E. A. Tissen, E. S. Matveenko, Ya. A. Mikhailov, N. Yu. Tret’yakov, A. N. Zagoruiko, A. V. Elyshev

{"title":"Assessment of the Efficiency of Catalysts for the Catalytic Pyrolysis of Polyethylene","authors":"V. B. Kharitontsev, E. A. Tissen, E. S. Matveenko, Ya. A. Mikhailov, N. Yu. Tret’yakov, A. N. Zagoruiko, A. V. Elyshev","doi":"10.1134/S2070050423040086","DOIUrl":"10.1134/S2070050423040086","url":null,"abstract":"The study is focused on the catalytic pyrolysis of high density polyethylene (PE) in the presence of HBEA, HZSM-5, and HFER catalysts and natural clay. The catalytic pyrolysis of plastics is a promising method to process recyclable materials, because it provides the conversion of polymers to other compounds, which are subsequently used as reagents for the chemical industry. The physicochemical parameters of the catalysts have been determined by Fourier transform IR spectroscopy, X-ray diffraction analysis, the nitrogen physical adsorption method, thermogravimetric analysis, and pyrolytic gas chromatography. The dependences of the PE degradation temperatures and the chemical composition of the catalytic pyrolysis products on the type of catalyst used have been revealed. The efficiency of the cracking process and the qualitative composition of the products are affected by two main factors: the structural and acidic parameters of the catalyst. The presence of Brønsted acid sites in zeolites contributes to the occurrence of the cracking and aromatization reactions. The possibility of using a clay sample for the thermal degradation of PE has been studied.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"397 - 403"},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053778","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

Methanol Decomposition to Synthesis Gas over Supported Platinum-Containing Catalysts 甲醇在含铂载体催化剂上分解为合成气

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040037

S. D. Badmaev, V. D. Belyaev, D. I. Potemkin, P. V. Snytnikov, V. A. Sobyanin, V. V. Kharton

{"title":"Methanol Decomposition to Synthesis Gas over Supported Platinum-Containing Catalysts","authors":"S. D. Badmaev, V. D. Belyaev, D. I. Potemkin, P. V. Snytnikov, V. A. Sobyanin, V. V. Kharton","doi":"10.1134/S2070050423040037","DOIUrl":"10.1134/S2070050423040037","url":null,"abstract":"The properties of supported Pt-containing granular (Pt/Ce0.75Zr0.25O2 – δ) and structured catalysts (Pt/Ce0.75Zr0.25O2 – δ/η-Al2O3/FeCrAl) in methanol decomposition to synthesis gas for feeding solid oxide fuel cells have been studied. It has been shown that the use of a structured catalyst for the methanol decomposition reaction is promising. It has been found that the addition of a small amount of oxygen to the feed mixture hinders the formation of carbon and thereby increases the on-stream stability of the catalyst. At atmospheric pressure, a temperature of ≈400°C, a reaction mixture feed space velocity of 5.6 L/(gcat h), and a CH3OH : air volume ratio of 1, the proposed 0.15 wt % Pt/8 wt % Ce0.75Zr0.25O2 – δ/6 wt % η-Al2O3/FeCrAl structured catalyst can provide a complete methanol conversion to synthesis gas with a total content of H2 and CO of ≈64 vol % and a productivity with respect to synthesis gas of ≈6.7 L(H2 + CO)/(gcat h).","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"367 - 373"},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053564","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