Effect of modifiers on the activity of a Cr2O3/Al2O3 catalyst in the dehydrogenation of ethylbenzene with CO2

Xingnan Ye; Yinghong Yue; Changxi Miao; Zaiku Xie; Weiming Hua; Zi Gao

doi:10.1039/B505781G

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Effect of modifiers on the activity of a Cr₂O₃/Al₂O₃catalyst in the dehydrogenation of ethylbenzene with CO₂

Xingnan Ye,^a Yinghong Yue,^a Changxi Miao,^b Zaiku Xie,^b Weiming Hua*^a and Zi Gao^a

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* Corresponding authors

^a Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
E-mail: wmhua@fudan.edu.cn
Fax: +862165641740
Tel: +862165642409

^b Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, P. R. China

Abstract

Chromium oxide supported on alumina was modified with various transition metal oxides by an incipient wetness method. The effect of modifiers on the activity of 20% Cr₂O₃/Al₂O₃ catalyst in the dehydrogenation of EB with CO₂ was investigated. The activity is enhanced for ceria and vanadia modified supported chromium oxide catalysts, whereas the activity is decreased for catalysts modified with cobalt, manganese, molybdenum and zinc oxides. Carbon monoxide was detected in the course of the reaction, suggesting that carbon dioxide, which is one of the most important greenhouse gases, could be utilized as a mild oxidant in the oxidative dehydrogenation of ethylbenzene to styrene over unmodified and modified Cr₂O₃/Al₂O₃ catalysts.

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Article information

DOI: https://doi.org/10.1039/B505781G
Article type: Paper
Submitted: 26 Apr 2005
Accepted: 16 May 2005
First published: 31 May 2005

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Green Chem., 2005,7, 524-528

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Effect of modifiers on the activity of a Cr₂O₃/Al₂O₃ catalyst in the dehydrogenation of ethylbenzene with CO₂

X. Ye, Y. Yue, C. Miao, Z. Xie, W. Hua and Z. Gao, Green Chem., 2005, 7, 524 DOI: 10.1039/B505781G

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