Selective oxidation of styrene on an oxygen-covered Au(111)

被引:129
作者
Deng, XY
Friend, CM
机构
[1] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA
[2] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA
关键词
D O I
10.1021/ja0557031
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
For the first time, we demonstrate olefin epoxidation promoted by an extended Au surface. The oxidation of styrene to styrene epoxide, benzoic acid, and benzeneacetic acid is promoted on Au(111) covered with 0.2 ML of oxygen atoms. The estimated selectivity for styrene epoxide formation is ∼53%. Total combustion to CO2 accounts for ∼20% of the styrene reaction. We propose that styrene epoxide, benzoic acid, and benzeneacetic acid are produced via two possible oxametallacycle intermediates. Our work demonstrates that extended Au is an effective material for olefin oxidation, which has implications for understanding the activity of nanoscale Au catalysts. Copyright © 2005 American Chemical Society.
引用
收藏
页码:17178 / 17179
页数:2
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