Evidence for cyclohexyl as a reactive surface intermediate during high-pressure cyclohexane catalytic reactions on Pt(111) by sum frequency generation vibrational spectroscopy

被引：19

作者：

Yang, M

Somorjai, GA ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2003年 / 125卷 / 36期

关键词：

D O I：

10.1021/ja035710u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Sum frequency generation (SFG) surface vibrational spectroscopy has been used to identify reactive surface intermediates in situ during catalytic dehydrogenation reactions of high-pressure cyclohexane (C6H12) on the Pt(l 11) crystal surface in the presence and absence of high-pressure hydrogen. These experiments provide the first spectroscopic evidence of cyclohexyl (C6H11) as a reactive surface intermediate during the cyclohexane catalytic conversion to benzene at high pressure in the presence of excess hydrogen. In addition, it was proposed from temperature-dependent SFG experiments that dehydrogenation of cyclohexyl is a rate-limiting step in the cyclohexane catalytic conversion to benzene.

引用

页码：11131 / 11135

页数：5

共 39 条

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