Promotional Effects of Au in Pd-Au Catalysts for Vinyl Acetate Synthesis

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (11): 1178-1186.

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Promotional Effects of Au in Pd-Au Catalysts for Vinyl Acetate Synthesis

CHEN Mingshu1, D. W. GOODMAN2*

1 State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China; 2 Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA

Received:2008-11-25 Online:2008-11-25 Published:2012-08-17

Abstract

Abstract: The main role of Au in Pd-Au bimetallic catalysts for vinyl acetate(VA) synthes is is to break contiguous Pd atom ensembles at the surface into isolated Pd mono mers. The absence of contiguous Pd sites thus significantly reduces the formati on of combustion by-products and suppresses the poison effects of CO, thus enha ncing the VA formation selectivity and activity.

Key words: vinyl acetate, bimetal, palladium, gold, alloy effect

CHEN Mingshu;D. W. GOODMAN*. Promotional Effects of Au in Pd-Au Catalysts for Vinyl Acetate Synthesis[J]. Chinese Journal of Catalysis, 2008, 29(11): 1178-1186.

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Promotional Effects of Au in Pd-Au Catalysts for Vinyl Acetate Synthesis

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