Kinetic study of the hydrogen sulfide effect in the conversion of thiophene on supported CoMo catalysts

Q4 Chemical Engineering

分子催化 Pub Date : 1994-12-15 DOI:10.1016/0304-5102(94)00152-9

Ragnhild C. Pille, Chang-yu Yu , Gilbert F. Froment

引用次数: 24

Abstract

The hydrodesulfurization of thiophene on a commercial CoMo/alumina catalyst was studied in a Berty type CSTR reactor at 350°C, with partial pressures of hydrogen sulfide in the range of 0.2 to 5.5 bar. A kinetic model with interconversion of active sites is superior to models based on a fixed number of active sites. The proposed mechanism for the interconversion of active sites predicts that the hydrogenation and hydrogenolysis activities of a HDS catalyst can be substantially varied by hydrogen sulfide. The model also explains the controversial hydrogen sulfide effects observed in various types of reactions on CoMo catalysts.

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负载CoMo催化剂上硫化氢催化噻吩转化的动力学研究

在Berty型CSTR反应器中，在350℃、硫化氢分压0.2 ~ 5.5 bar的条件下，研究了噻吩在CoMo/氧化铝催化剂上的加氢脱硫。具有活性位点相互转化的动力学模型优于基于固定数量活性位点的模型。所提出的活性位点相互转化的机制预测了HDS催化剂的加氢和氢解活性可以被硫化氢大大改变。该模型还解释了在CoMo催化剂上不同类型反应中观察到的有争议的硫化氢效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

分子催化 Chemical Engineering-Catalysis

CiteScore

1.50

自引率

0.00%

发文量

2959

期刊介绍： Journal of Molecular Catalysis (China) is a bimonthly journal, founded in 1987. It is a bimonthly journal, founded in 1987, sponsored by Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, under the supervision of Chinese Academy of Sciences, and published by Science Publishing House, which is a scholarly journal openly circulated both at home and abroad. The journal mainly reports the latest progress and research results on molecular catalysis. It contains academic papers, research briefs, research reports and progress reviews. The content focuses on coordination catalysis, enzyme catalysis, light-ribbed catalysis, stereochemistry in catalysis, catalytic reaction mechanism and kinetics, the study of catalyst surface states and the application of quantum chemistry in catalysis. We also provide contributions on the activation, deactivation and regeneration of homogeneous catalysts, solidified homogeneous catalysts and solidified enzyme catalysts in industrial catalytic processes, as well as on the optimisation and characterisation of catalysts for new catalytic processes. The main target readers are scientists and postgraduates working in catalysis in research institutes, industrial and mining enterprises, as well as teachers and students of chemistry and chemical engineering departments in colleges and universities. Contributions from related professionals are welcome.