AN IR STUDY OF CO SURFACE-DIFFUSION ON SUBMONOLAYER METAL OVERLAYERS

被引:13
作者
KUHN, WK [1 ]
HE, JW [1 ]
GOODMAN, DW [1 ]
机构
[1] TEXAS A&M UNIV SYST,DEPT CHEM,COLLEGE STN,TX 77843
关键词
D O I
10.1016/S0009-2614(90)87122-8
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 adsorption and surface diffusion of CO on Pd/W (110) and Cu/Rh (100) surfaces have been studied using infrared reflection-absorption spectroscopy (IRAS). For CO adsorbed on 0.14 MP Pd on W (110), the CO is found to diffuse from Pd to W at approximately 200 K. Likewise, CO adsorbed on ≈ 0.1 ML Cu on Rh (100) will diffuse from the Cu to the Rh at approximately 250 K. In addition, the CO adsorbed on the copper is blue-shifted relative to the gas phase CO stretching frequency of 2143 cm-1. © 1990.
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页码:331 / 334
页数:4
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