Catalysis in Industry最新文献_第10页

Silica Gel as a Sorbent and Catalyst Support: Improvement of Technologies and Search for Alternative Production Routes 硅胶作为吸附剂和催化剂载体:技术改进和替代生产途径的探索

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Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030054

G. V. Mamontov, E. V. Evdokimova, A. S. Savel’eva, A. V. Zubkov, N. N. Mikheeva, I. N. Mazov, A. S. Knyazev

引用次数: 0

Isomerization of Hexane and Heptane Mixtures in the Presence of Platinum-Containing Tungstated Zirconia Catalysts 含铂钨氧化锆催化剂存在下正己烷和庚烷混合物的异构化

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Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030091

M. D. Smolikov, V. A. Shkurenok, L. I. Bikmetova, N. N. Leont’eva, A. V. Lavrenov

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Erratum to: Deactivation and Regeneration of a Zeolite-Containing Cobalt Catalyst in a Fischer–Tropsch Synthesis Reactor 费托合成反应器中含钴沸石催化剂的失活和再生

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Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030121

A. S. Gorshkov, L. V. Sineva, K. O. Gryaznov, E. Yu. Asalieva, V. Z. Mordkovich

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Structural and Catalytic Properties of Binary Alumina‒Amorphous Aluminosilicate Systems 二元氧化铝-非晶铝硅酸盐体系的结构与催化性能

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Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030030

V. P. Doronin, T. V. Bobkova, T. P. Sorokina, O. V. Potapenko, A. S. Yurtaeva, N. N. Leont’eva, T. I. Gulyaeva

{"title":"Structural and Catalytic Properties of Binary Alumina‒Amorphous Aluminosilicate Systems","authors":"V. P. Doronin, T. V. Bobkova, T. P. Sorokina, O. V. Potapenko, A. S. Yurtaeva, N. N. Leont’eva, T. I. Gulyaeva","doi":"10.1134/S2070050423030030","DOIUrl":"10.1134/S2070050423030030","url":null,"abstract":"Amorphous aluminosilicate‒alumina systems are investigated by a set of physicochemical means that includes studying the NMR 27Al spectra of solid samples and the acidity of catalysts via ammonia temperature-programmed desorption, a structural X-ray diffraction study, and a thermogravimetric analysis of samples. Studying the catalytic properties of samples under the conditions of cracking on a model feedstock of n-dodecane in a mixture with 2-methylthiophene shows that the conversion of feedstock grows in the order 100% Al2O3 (AHO) > 70% Al‒Si + 30% Al2O3 (AHO) > 30% Al‒Si + 70% Al2O3 (AHO) > 100% Al‒Si (where AHO is the aluminum hydroxide of sulfate synthesis, and Al‒Si is an amorphous aluminosilicate). Raising the calcination temperature of samples from 500 to 700°C reduces the conversion of feedstock. Increasing the contribution from hydrogen transfer reactions leads to an increase improves the selectivity toward hydrogen sulfide and lowers the content of sulfur compounds in the liquid products.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 3","pages":"229 - 237"},"PeriodicalIF":0.7,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4191290","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

Chromatography in Catalysis 催化色谱

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Catalysis in Industry Pub Date : 2023-09-04 DOI: 10.1134/S2070050423030108

L. N. Stepanova, A. V. Lavrenov

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Deactivation and Regeneration of a Zeolite-Containing Cobalt Catalyst in a Fisher–Tropsch Synthesis Reactor 含钴沸石催化剂在费托合成反应器中的失活与再生

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Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S207005042302006X

A. S. Gorshkov, L. V. Sineva, K. O. Gryaznov, E. Yu. Asalieva, V. Z. Mordkovich

引用次数: 1

Study of Iron-Based Catalysts Performance in Fischer–Tropsch Synthesis: Temperature and Promoter Effect 费托合成中铁基催化剂性能的研究:温度和促进剂效应

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Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020071

Mahin Jabalameli, Yahya Zamani, Sahar Baniyaghoob, Laleh Shirazi

{"title":"Study of Iron-Based Catalysts Performance in Fischer–Tropsch Synthesis: Temperature and Promoter Effect","authors":"Mahin Jabalameli, Yahya Zamani, Sahar Baniyaghoob, Laleh Shirazi","doi":"10.1134/S2070050423020071","DOIUrl":"10.1134/S2070050423020071","url":null,"abstract":"The iron-based catalysts were prepared via wet-impregnation method. The composition of the final iron catalysts, regarding to the weight ratio is as follow 14%Fe/γ-Al2O3, 14%Fe/3%Cu/γ-Al2O3, 14%Fe/3%Sn/γ-Al2O3 and 14%Fe/3%Cu/1%Sn/γ-Al2O3. The catalysts were characterized using XRD, ICP, BET, H2-TPR, FE-SEM and EDX techniques. The catalytic activity was evaluated in a fixed bed reactor under 2.0 MPa of pressure, H2 : CO = 1 : 1, GHSV = 2 L h–1 ({text{g}}_{{{text{cat}}}}^{{-1}}), in the temperature range of 270–300°C. Then, the effect of temperature and promoters (Cu and Sn) on the catalyst performance was investigated. CO conversion and product selectivity were also calculated using the results of GC. The results showed that the Cu and Sn promoters increased the reduction rate of Fe2O3 by providing H2 dissociation sites. Higher temperatures were also shown to change the CO conversion and product selectivity. The selectivity of both methane and C2–C4 hydrocarbons decreased while the selectivity of C5+ increased because of simultaneous use of Cu and Sn for promoting iron catalyst. Sn promoter increased FT and WGS activities.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 2","pages":"132 - 143"},"PeriodicalIF":0.7,"publicationDate":"2023-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4687169","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 Iron Oxide Content in Bentonite Clay Incorporated into a Catalytic System on the Sulfur Distribution in the Products of Cracking from Model Sulfur-Containing Feedstock 膨润土催化体系中氧化铁含量对模型含硫原料裂化产物中硫分布的影响

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Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020022

T. V. Bobkova, K. I. Dmitriev, O. V. Potapenko, V. P. Doronin, T. P. Sorokina

引用次数: 0

Mathematical Modeling of Vacuum Gasoil Hydrotreatment 真空汽油加氢处理的数学建模

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Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020113

A. M. Vorob’ev, N. S. Belinskaya, D. A. Afanas’eva, S. B. Arkenova, T. A. Kaliyev, E. B. Krivtsov, E. N. Ivashkina, N. I. Krivtsova

引用次数: 0

Effect of the Precursor and Synthesis Regime on the Properties of Hematite for Preparing Promoted Iron Oxide Catalysts 前驱体及合成方式对制备促进氧化铁催化剂赤铁矿性能的影响

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Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020046

A. N. Dvoretskaya, L. G. Anikanova, N. V. Dvoretskii

{"title":"Effect of the Precursor and Synthesis Regime on the Properties of Hematite for Preparing Promoted Iron Oxide Catalysts","authors":"A. N. Dvoretskaya, L. G. Anikanova, N. V. Dvoretskii","doi":"10.1134/S2070050423020046","DOIUrl":"10.1134/S2070050423020046","url":null,"abstract":"The fine crystal structure of hematite samples used for preparing potassium promoted iron oxide catalysts of dehydrogenation is studied via X-ray diffraction and scanning electron microscopy. α-Fe2O3 samples are synthesized under non-equilibrium conditions from several precursors in different regimes of thermolysis. The most important characteristic of hematite that causes the activity and selectivity of a hematite-based catalyst is its fine crystal structure (FCS). The fine crystal structure of hematite predetermines the phase composition of the catalyst. The fine crystal structure of hematite forms during its synthesis and is determined by the nature of the precursor, the temperature of synthesis, the temperature gradient, and the rate of the removal of gaseous thermolysis products. The highest activity is displayed by the catalyst prepared on the basis of hematite with mosaic blocks 70–90 nm in size and a minimum SF concentration caused by half and quaternary dislocations. Such hematite was synthesized via the thermolysis of iron sulfate at 950 K under fluidized bed and low temperature gradient conditions. Hematite from iron carbonate is not recommended for use in synthesizing a catalyst due to the high concentration of low-temperature SFs, which result in the formation of catalytically low-active potassium β-polyferrite.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 2","pages":"144 - 151"},"PeriodicalIF":0.7,"publicationDate":"2023-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4687199","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