TY - JOUR
T1 - Catalytic carbon monoxide oxidation over CoOx/CeO2 composite catalysts
AU - Kang, Min
AU - Song, Min Woo
AU - Lee, Chang Ha
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/9/25
Y1 - 2003/9/25
N2 - CoOx/CeO2 composite catalysts of different cobalt/ceria ratios have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and oxygen. The small activity decay observed for them is due to carbon dioxide retention. The CoOx/CeO 2 composite catalyst showed good resistance to water vapor poisoning. The catalysts were investigated by X-ray diffraction (XRD), temperature-programmed reduction (TPR), CO-TPD and XPS. The CoO x/CeO2 composite catalysts exhibit high catalytic activity in carbon monoxide oxidation, showing markedly enhanced catalytic activities due to the combined effect of cobalt oxide and ceria. Combining the results of XRD, TPR and XPS, we propose that the finely dispersed and higher valence state CoOx species mainly contribute to the catalytic activity.
AB - CoOx/CeO2 composite catalysts of different cobalt/ceria ratios have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and oxygen. The small activity decay observed for them is due to carbon dioxide retention. The CoOx/CeO 2 composite catalyst showed good resistance to water vapor poisoning. The catalysts were investigated by X-ray diffraction (XRD), temperature-programmed reduction (TPR), CO-TPD and XPS. The CoO x/CeO2 composite catalysts exhibit high catalytic activity in carbon monoxide oxidation, showing markedly enhanced catalytic activities due to the combined effect of cobalt oxide and ceria. Combining the results of XRD, TPR and XPS, we propose that the finely dispersed and higher valence state CoOx species mainly contribute to the catalytic activity.
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U2 - 10.1016/S0926-860X(03)00324-7
DO - 10.1016/S0926-860X(03)00324-7
M3 - Article
AN - SCOPUS:0041830145
VL - 251
SP - 143
EP - 156
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
IS - 1
ER -