SELECTIVE OXYGEN ADDITION WITH SULFUR REMOVAL - THE REACTIONS OF 2-PROPANETHIOL ON RH(111)-P(2X1)-O

被引:6
作者
BOL, CWJ [1 ]
FRIEND, CM [1 ]
机构
[1] HARVARD UNIV,DEPT CHEM,CAMBRIDGE,MA 02138
关键词
D O I
10.1016/0039-6028(95)90009-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The unprecedented combination of sulfur removal and selective oxygen addition is observed in the formation of acetone from 2-propanethiol on Rh(111)-p(2 X 1)-O. The reaction is studied by temperature programmed reaction spectroscopy, and acetone is identified on the basis of the mass spectrometer intensity distribution. Propene elimination via C-S bond scission and selective beta-hydrogen elimination also occurs. 2-propyl thiolate forms upon adsorption at similar to 100 K and the reaction is proposed to proceed via 2-propyl. beta-hydrogen elimination from 2-propyl would yield propene, while oxygen addition would afford 2-propoxide which readily forms acetone. The competing combustion process proceeds via an undetermined pathway. These reactions offer insight into the control of selective C-H bond activation by oxygen on Rh(111) which has broad significance in oxidation chemistry.
引用
收藏
页码:L271 / L274
页数:4
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