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Acta Physico-Chimica Sinica  1997, Vol. 13 Issue (02): 128-133    DOI: 10.3866/PKU.WHXB19970206
Article     
Desorption of Surface Oxygen on Cu/ZrO2-γ-Al2O3 and its Influence on the Catalytic Performance
Zhou Ren-Xian,Jiang Xiao-Yuan,Lv Guang-Lie,Zheng Xiao-Ming
Institute of Catalysis,Hangzhou University,Centrul Laboratory of Hangzhou University,Hangzhou 310028
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Abstract  

The effects of ZrO2 modification of γ-Al2O3 on the desorption-renewal properties of surface oxygen species and the reduction behavior of copper species on CuO/γ-Al2O3 were studied by TPD-MS and TPR methods, and its activity for CO oxidation was examined. The results indicated that the presence of ZrO2 could promote the desorption of surface oxygen species and the reduction of copper species on CuO/γ-Al2O3 and thus increasing the activity for CO oxidation. In addition, it was found that the desorptibility of oxygen species and the reducibility of copper species on γ-Al2O3 or ZrO2-Al2O3 were affected by variation in the conditions of thermal treatment.



Key wordsZrO2      CuO/γ-Al2O3      CO oxidation      Surface oxygen species     
Received: 01 July 1996      Published: 15 February 1997
Corresponding Authors: Zhou Ren-Xian   
Cite this article:

Zhou Ren-Xian,Jiang Xiao-Yuan,Lv Guang-Lie,Zheng Xiao-Ming. Desorption of Surface Oxygen on Cu/ZrO2-γ-Al2O3 and its Influence on the Catalytic Performance. Acta Physico-Chimica Sinica, 1997, 13(02): 128-133.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB19970206     OR     http://www.whxb.pku.edu.cn/Y1997/V13/I02/128

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