Adsorption of CO on an MnO/Rh(100) model catalyst

被引：5
|
作者：
Nishimura, H [1 ]
Ogawa, J [1 ]
Nakamura, J [1 ]
机构：
[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
来源：
SURFACE SCIENCE | 2001年 / 482卷
关键词：
auger electron spectroscopy; low energy electron diffraction (LEED); infrared absorption spectroscopy; catalysis; manganese; rhodium; carbon monoxide; chemisorption;
D O I：
10.1016/S0039-6028(00)01016-5
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：
Adsorption of CO on an MnO/Rh(1 0 0) model catalyst has been studied using in situ infrared reflection absorption spectroscopy. The linear CO and bridged CO are observed on the clean Rh(1 0 0) and the MnO/Rh(1 0 0) surfaces. New extra peaks or significant peak shifts are not observed for the adsorption of CO on the MnO/Rh(1 0 0). The monolayer of the MnO species simply blocks the adsorption site of CO on the Rh(1 0 0) surface. The population ratio of the linear CO and the bridged CO species, however, varies with the MnO coverage, suggesting that the size of the bare Rh patches on MnO/Rh(1 0 0) controls the ratio as an effect of the MnO species on the CO adsorption. The results are compared with those reported for Mn-promoted Rh powder catalysts. (C) 2001 Elsevier Science B.V. All rights reserved.
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页码：215 / 219
页数：5
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