Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (10): 1043-1050.

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Properties of CeO2-ZrO2 Solid Solution Supported on Si-Modified Alumina and Its Application in Pd Catalyst for Methane Combustion

WANG Xiaohong1,2, LU Guanzhong1*, GUO Yun1, QIAO Dongsheng1, ZHANG Zhigang1, GUO Yanglong1, LI Chunzhong2   

  1. 1 Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China; 2 Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
  • Received:2008-10-25 Online:2008-10-25 Published:2008-10-25

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Abstract: CeO2-ZrO2 supported on Si-modified alumina was prepared by the reverse mic roemulsion method. The crystalline phase of Ce-Zr-O on Si-Al2O3 was the s ame as that of unsupported CeO2-ZrO2, and the thermal stability and oxygen storage/release capacity were improved. With the 0.2%Pd/10%Ce-Zr-O/Si-Al2O 3 catalyst, T90 for methane combustion was only 345 ℃, which was 17 5 ℃ lower than that of Pd supported on other supports.

Key words: supported ceria-zirconia solid solution, silicon-modified alumina, palladium catalyst, catalytic activity, methane combustion