Propylene Epoxidation by Dioxygen over Catalyst Copper-loaded TiO2

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (5): 866-869.

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Propylene Epoxidation by Dioxygen over Catalyst Copper-loaded TiO₂

JIN Qiang-wei¹, WANG Kai-xue¹, WANG Jian-qiang², LI Xiao-bei¹ and CHEN Jie-sheng^1*

1. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, P. R. China;
2. Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, P. R. China

Received:2010-12-27 Revised:2011-04-12 Online:2011-09-25 Published:2011-09-06
Contact: CHEN Jie-sheng E-mail:chemcj@sjtu.edu.cn
Supported by:
Supported by the National Basic Research Program of China(No.2007CB613303) and the National Natural Science Foundation of China(No.20731003).

Abstract

Abstract: A copper-TiO2 based catalyst(Cu-OH-Cl-TiO2) was prepared through a slurry impregnation approach and the catalyst was found to be active and selective for the epoxidation of propylene by dioxygen. With a feed gas of 10% C3H6, 10% O2 and 80% N2 at a gas hourly space velocity(GHSV) of 4000 h–1, a propylene conversion of 4.8% and a propylene oxide(PO) selectivity of 38.9% were achieved over the obtained Cu-OH-Cl-TiO2 catalyst at a reaction temperature of 500 K. It revealed that Cu2+ provided by crystalline Cu2(OH)3Cl plays a key role in catalytic conversion of propylene to PO.

Key words: Propylene epoxidation, Selectivity, Cu-OH-Cl-TiO2, Dioxygen

JIN Qiang-wei, WANG Kai-xue, WANG Jian-qiang, LI Xiao-bei and CHEN Jie-sheng*. Propylene Epoxidation by Dioxygen over Catalyst Copper-loaded TiO₂[J]. Chemical Research in Chinese Universities, 2011, 27(5): 866-869.

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Propylene Epoxidation by Dioxygen over Catalyst Copper-loaded TiO₂

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