典型文献
Kinetic Study of Homogeneous Rhodium-Catalyzed Ethanol Carbonylation Using Bis(diphenylphosphino)methane Ligands
文献摘要：
Homogeneous rhodium-catalyzed carbonylation of ethanol is a potential route for the preparation of propionic acid, although its commercialization has been hindered by a low reaction rate. In this work, various bis(diphenylphosphine) ligands were evaluated in the rhodium-catalyzed reaction system in an effort to improve the reaction rate. By comparing the space-time yield and selectivity of the catalytic system in a Hastelloy autoclave reactor, the effects of the choice of ligand, ligand:rhodium ratio, carbon monoxide pressure, temperature, rhodium concentration, ethyl iodide content, and lithium iodide content were investigated. In the presence of the ligand bis(diphenylphosphino)methane disulfide (dppmS2), the activity of the catalyst was improved significantly. The results revealed that the optimal conditions included a dppmS2:Rh molar ratio of 0.5:1, a rhodium concentration of 1000 μg/g, an ethyl iodide content of 10％, and a lithium iodide content of 10％. The most suitable reaction temperature and carbon monoxide pressure were 463 K and 3.0 MPa, respectively, which resulted in a maximum space-time yield of 4.30 mol/(h·L). A kinetic model was established in the temperature range of 442 – 463 K, and the model data were regressed and validated, revealing an activation energy of 28.01 kJ/mol. Residual analysis and statistical tests demonstrated the reliability of the kinetic experiments.
文献关键词：
中图分类号：
作者姓名：
Long Haoyu;Xu Lin;Song Jianhua;Wang Xiaoping;Wang Weichong;Liu Dianhua
作者机构：
Stake Key Laboratory of Chemical Engineering,East China University of Science and Technologu,Shanghai 200237
文献出处：
引用格式：
[1]Long Haoyu;Xu Lin;Song Jianhua;Wang Xiaoping;Wang Weichong;Liu Dianhua-.Kinetic Study of Homogeneous Rhodium-Catalyzed Ethanol Carbonylation Using Bis(diphenylphosphino)methane Ligands)[J].中国炼油与石油化工（英文版）,2022(02):76-84
A类：
Carbonylation,diphenylphosphino,dppmS2
B类：
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AB值：
0.558975
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