Bifunctional Cobalt Catalysts for the Fischer–Tropsch Synthesis of Low-Pour-Point Diesel Fuel: From Development to Implementation: 2. Optimization of the Catalyst Component Composition

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2023-12-26 DOI:10.1134/S2070050423040128

R. E. Yakovenko, V. G. Bakun, I. N. Zubkov, O. P. Papeta, A. N. Saliev, A. P. Savost’yanov

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Abstract

The effect of the content of metallic (Co–Al₂O₃/SiO₂ catalyst) and acidic components (ZSM-5 zeolite in H-form) on the properties of a bifunctional catalyst for the integrated synthesis of low-pour-point diesel fuel by the Fischer–Tropsch method has been studied. The catalysts in the form of a composite mixture with a binder (boehmite) have been characterized by XRD, BET, and TPR methods. The tests are conducted in a fixed-bed flow reactor at a pressure of 2.0 MPa, a temperature of 240°C, and a gas space velocity of 1000 h^–1. The activity and selectivity of catalysts and the fractional and hydrocarbon compositions of products as a function of the ratio of components have been compared. It has been found that the synthesis productivity with respect to С₅₊ hydrocarbons and selectivity to products of the С₁₁–C₁₈ diesel fraction with a high content of isomeric products correlate with the ratio of metallic and acidic components in the catalyst composition. The catalyst recommended for use in diesel fuel production has a composition with a ratio of metallic and acidic components of 1.17.

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用于费托合成低倾点柴油的双功能钴催化剂：从开发到实施：2. 催化剂组分的优化

摘要研究了金属成分（Co-Al2O3/SiO2 催化剂）和酸性成分（H 型 ZSM-5 沸石）对费托法综合合成低倾点柴油的双功能催化剂性能的影响。采用 XRD、BET 和 TPR 方法对与粘合剂（沸石）的复合混合物形式的催化剂进行了表征。试验在压力为 2.0 兆帕、温度为 240 摄氏度、气体空间速度为 1000 小时-1 的固定床流动反应器中进行。比较了催化剂的活性和选择性以及产品的馏分和碳氢化合物组成与组分比例的关系。研究发现，С5+ 碳氢化合物的合成生产率以及对异构产物含量较高的С11-C18 柴油馏分产物的选择性与催化剂成分中金属和酸性成分的比例相关。建议用于柴油生产的催化剂的金属和酸性组分的比例为 1.17。

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

期刊介绍： The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.