Catalysis in Industry最新文献_第6页

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

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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

Alkoxycarbonylation of Unsaturated Substrates of Plant Origin in the Presence of Palladium Catalysts as a Route to Synthesize Ester Products 钯催化剂作用下植物源不饱和基质的烷氧基羰基化作为合成酯类产品的途径

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040104

N. T. Sevostyanova, S. A. Batashev

{"title":"Alkoxycarbonylation of Unsaturated Substrates of Plant Origin in the Presence of Palladium Catalysts as a Route to Synthesize Ester Products","authors":"N. T. Sevostyanova, S. A. Batashev","doi":"10.1134/S2070050423040104","DOIUrl":"10.1134/S2070050423040104","url":null,"abstract":"The synthesis of esters by the alkoxycarbonylation of unsaturated substrates of plant origin opens up the possibility of switching to alternative raw materials and provides a solution to a number of problems facing the chemical industry: resource saving, waste minimization, and increasing the environmental safety and efficiency of the processes being implemented. However, to date, only the production of methyl methacrylate, which includes ethylene methoxycarbonylation as one of the stages, has been implemented in industry. The aim of this review is to systematize and analyze the data published since 2010 in the field of ester synthesis by the alkoxycarbonylation of plant substrates under mild conditions. It has been found that, over the indicated period, the alkoxycarbonylation of pentenoic and undecenoic acids, oleic, linoleic, and erucic acids or their esters, and terpene compounds—citronellic acid and β-myrcene—has been implemented. It has been shown that high yields of linear products and selectivities for them under mild conditions have been provided mostly by using homogeneous palladium–diphosphine catalysts. The results of these studies open up broad prospects for the implementation of processes that are new for industry, namely, the alkoxycarbonylation of substrates of plant origin for synthesizing chemical products of high priority, primarily polymers.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"333 - 349"},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053602","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

Experience in Creating and Using the GTL Technology in Russia 在俄罗斯创建和使用GTL技术的经验

IF 0.7

Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030078

A. P. Savost’yanov, R. E. Yakovenko

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Development of a Method and Technique for Analysis of Acetone Hydrogenation Products by Gas Chromatography 丙酮加氢产物气相色谱分析方法与技术的发展

IF 0.7

Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S207005042303011X

E. Yu. Yakovleva, Mural Nurbol, G. A. Bukhtiyarova

引用次数: 0

Spherical TiO2/Cr2O3 Composites Synthesized with the Use of Ion-Exchange Resins as a Template 以离子交换树脂为模板制备球形TiO2/Cr2O3复合材料

IF 0.7

Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030029

A. A. Buzaev, A. O. Rogacheva, T. V. Larina, E. V. Dokuchits, O. S. Khalipova, V. V. Zharkova

{"title":"Spherical TiO2/Cr2O3 Composites Synthesized with the Use of Ion-Exchange Resins as a Template","authors":"A. A. Buzaev, A. O. Rogacheva, T. V. Larina, E. V. Dokuchits, O. S. Khalipova, V. V. Zharkova","doi":"10.1134/S2070050423030029","DOIUrl":"10.1134/S2070050423030029","url":null,"abstract":"Two samples of TiO2/Cr2O3 composites are synthesized in the form of spherical grains via the stagewise thermal treatment of ion-exchange resins preliminarily saturated with chromium Cr3+ cations and dichromate ({text{C}}{{{text{r}}}_{{text{2}}}}{text{O}}_{7}^{{2 - }}) anions, and then coated with a film-forming titania-based solution. Calcination temperature regimes are set on the basis of a thermal analysis and determined by the type of ion-exchange resin selected as a template. The synthesized composites are generally composed of the α-Cr2O3 phase, and the content of the TiO2 phase is less than 4%. The composites replicate the spherical shape of grains for the initial ion-exchange resins with sizes of 370 to 660 µm. The grains of the sample based on kaolinite adsorbing Cr3+ ions have a porous structure with bulbs and cavities. The anion-exchange resin-based sample grains have kinks and cracks over their surfaces due to a nonuniform distribution of adsorbed ({text{C}}{{{text{r}}}_{{text{2}}}}{text{O}}_{7}^{{2 - }}) anions in the initial anion-exchange resin. The composites exhibit catalytic activity in the deep p-xylene oxidation reaction. The cation-exchange resin-based sample is more active, due apparently to the smaller accessible titania surfaces in the anion-exchange resin-based sample as a result of the formation of a solid Ti3+ solution in α-Cr2O3.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 3","pages":"313 - 322"},"PeriodicalIF":0.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4193544","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

Role of Interstitial Solid Solutions in the Formation of the Active Component of Supported Palladium Catalysts for the Selective Hydrogenation of Acetylene to Ethylene 间隙固溶体在乙炔选择性加氢制乙烯负载型钯催化剂活性组分形成中的作用

IF 0.7

Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S207005042303008X

D. A. Shlyapin, D. V. Glyzdova, T. N. Afonasenko, V. L. Temerev, A. V. Lavrenov

引用次数: 0

Solid-Phase Synthesis of Nickel–Molybdenum Catalysts for Propylene Metathesis under Mechanical Activation 机械活化下丙烯分解镍钼催化剂的固相合成

IF 0.7

Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030042

O. A. Knyazheva, O. N. Baklanova, E. A. Buluchevskii, A. B. Arbuzov, M. V. Trenikhin, T. R. Karpova, M. A. Moiseenko, N. N. Leont’eva, A. V. Lavrenov

{"title":"Solid-Phase Synthesis of Nickel–Molybdenum Catalysts for Propylene Metathesis under Mechanical Activation","authors":"O. A. Knyazheva, O. N. Baklanova, E. A. Buluchevskii, A. B. Arbuzov, M. V. Trenikhin, T. R. Karpova, M. A. Moiseenko, N. N. Leont’eva, A. V. Lavrenov","doi":"10.1134/S2070050423030042","DOIUrl":"10.1134/S2070050423030042","url":null,"abstract":"Solid-phase synthesis of aluminum–molybdenum (Al–Mo) and aluminum–nickel–molybdenum (Al–Ni–Mo) model composites as part of propylene metathesis catalysts has been conducted under mechanical activation. The structure of Al–Mo and Al–Ni–Mo model composites has been studied by X-ray diffraction analysis, high-resolution transmission electron microscopy, infrared spectroscopy, and diffuse reflectance electron spectroscopy (DRES). The DRES method has shown the presence of isolated monomeric and oligomeric molybdate compounds in the Al–Ni–Mo model composites. Granular metathesis catalysts have been synthesized by molding the Al–Mo and Al–Ni–Mo model composites with aluminum hydroxide and subsequent calcining. It has been shown that the highest activity in the propylene metathesis reaction is exhibited by an aluminum–molybdenum catalyst containing 2.6 wt % Ni, 13.0 wt % Mo, and 32.7 wt % Al. At a process temperature of 200°C, a pressure of 0.1 MPa, and a propylene feed space velocity of 1 h–1, in the presence of this catalyst, the propylene conversion achieves 33.7%; this fact makes this catalyst promising for practical applications. At the same time, the weight fraction of ethylene and butenes in the reaction product composition is 17.5 and 71.3%, respectively.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 3","pages":"278 - 287"},"PeriodicalIF":0.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4190221","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