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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 1999,Vol.15>> Issue(02)>> 97-100     doi: 10.3866/PKU.WHXB19990201         中文摘要
Communication
The Effect of CO2 on Catalytic Activity of Cu-Ce-O Complex Oxides for CO Oxidation
Liu Ying-Jun, Zhang Ji-Jun, Li Neng, Lin Bing-Xiong
Institute of Physical Chemistry,Peking University,Beijing 100871
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The effect of CO2 on catalytic activity for CO oxidation on Cu-Ce-O fluorite-type complex oxides has been investigated. CO2 played an inhibiting role in CO oxidation on the catalyst similar to what happened on CeO2. As CO2 was introduced into the feed, the coliversion of CO to CO2 on the catalyst was reduced a little. At room temperature, the catalyst could easily adsorb CO2 in large amounts from the air to form carbonate on its surface, as well as from the yields at low reaction temperature As a result, the catalyst could be poisoned by CO2 tentatively .The catalytic activity could be recovered to its initial value on being heated at 300 ℃ or higher temperature. Cu-Ce-O catalyst showed high activity with CO conversion over 98% after being pretreated to desorb CO2 previously.



Keywords: Ceria   CuO   Cu-Ce-Ocomplex oxide   Inhibiting effect of CO2   CO oxidation  
Received: 1998-11-03 Accepted: 1998-12-07 Publication Date (Web): 1999-02-15
Corresponding Authors: Liu Ying-Jun Email:


Cite this article: Liu Ying-Jun, Zhang Ji-Jun, Li Neng, Lin Bing-Xiong. The Effect of CO2 on Catalytic Activity of Cu-Ce-O Complex Oxides for CO Oxidation[J]. Acta Phys. -Chim. Sin., 1999,15 (02): 97-100.    doi: 10.3866/PKU.WHXB19990201
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