Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2007, Vol. 28 ›› Issue (11): 953-957.

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Mesoporous CeO2-Supported Co3O4 Catalysts for CO Preferential Oxidation in H2-Rich Gases

GUO Qiang1, WU Meiling1, LIU Yuan1*, BAI Xue2   

  1. 1 Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, China; 2 College of Chemical Engineering, Inner Mongolia University of Technology, Huhehot 010062, Inner Mongolia, China
  • Received:2007-11-25 Online:2007-11-25 Published:2011-10-13

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Abstract: Mesoporous ceria (meso-CeO2) and the mesoporous ceria-supported cobalt catalyst (Co3O4/meso-CeO2) were synthesized through a surfactant-templated method and used for CO preferential oxidation (PROX) in H2-rich gases. The N2 physical adsorption andX-raydiffraction techniques were used to study the textural properties and crystalline structure of the meso-CeO2 and Co3O4/meso-CeO2. It was found that Co3O4/meso-CeO2 exhibited very good catalytic performance for the PROX reaction at high space velocity, whereas CO2 and water had negative effects on CO conversion. In addition, the Co3O4/meso-CeO2 catalyst had a much wider temperature window for the complete conversion of CO than the Co3O4/non-mesoporous CeO2 catalyst.

Key words: mesopore, ceria, cobalt oxide, carbon monoxide, preferential oxidation, hydrogen