Kinetic Model of Selective Trimerization of Ethylene to Hexene-1 on Chromium-Pyrrole Catalyst

IF 1.3 Q4 ENGINEERING, CHEMICAL
P. I. Kul’chakovskii, V. S. Ermolaev, S. L. Saratovskikh, E. E. Faingol’d, I. V. Sedov, A. A. Biktimirov, D. A. Lenev
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Abstract

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.

Abstract Image

铬-吡咯催化剂上乙烯选择性三聚制己烯-1的动力学模型
介绍了在铬吡咯催化剂上乙烯三聚制1-己烯的实验研究结果。研究的压力范围为18-30 bar,温度范围为105-20℃,催化剂浓度范围为1.165-3.500 mg/L。文中还建立了半流反应器的数学模型。提出了一种描述观察到的反应产物的途径。通过求解反动力学问题,确定了反应初级阶段的速率常数。分析了乙烯吸附曲线与反应条件、压力、温度、催化剂浓度以及实验过程中乙烯浓度变化的关系。
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来源期刊
Catalysis in Industry
Catalysis in Industry ENGINEERING, CHEMICAL-
CiteScore
1.30
自引率
14.30%
发文量
21
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.
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