Effect of Promoters on the Catalytic Activity of MCM-41 with High Copper Content in Benzene Hydroxylation

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (4): 385-390.

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Effect of Promoters on the Catalytic Activity of MCM-41 with High Copper Content in Benzene Hydroxylation

KONG Yan1*, XU Xinjie1, WU Yong2, ZHANG Rui1, WANG Jun1*

1 State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China; 2 Institute of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, Jiangsu, China

Received:2008-04-25 Online:2008-04-25 Published:2012-03-22

Abstract

Abstract: Cu-MCM-41 with a high copper content up to 26.0% showed excellent catalytic activity in the direct hydroxylation of benzene with hydroperoxide. The effects of various kinds of heteroatoms on the catalytic activity were studied. The introduction of a small amount of acidic promoters such as B and Al can enhance phenol selectivity to 100%. Some redox promoters such as V and Cr increase the conversion of benzene slightly, whereas other elements such as Ti and Zr inhibit the catalytic activity of catalysts. The reasons for these influences were briefly discussed according to the radical mechanism.

Key words: promoter, Cu-MCM-41, benzene, hydrogen peroxide, hydroxylation

KONG Yan*;XU Xinjie;WU Yong;ZHANG Rui;WANG Jun*. Effect of Promoters on the Catalytic Activity of MCM-41 with High Copper Content in Benzene Hydroxylation[J]. Chinese Journal of Catalysis, 2008, 29(4): 385-390.

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Effect of Promoters on the Catalytic Activity of MCM-41 with High Copper Content in Benzene Hydroxylation

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