Ce-Al Mixed Oxide with High Thermal Stability for Diesel Soot Combustion

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (7): 685-689.

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Ce-Al Mixed Oxide with High Thermal Stability for Diesel Soot Combustion

SUN Shumin1,2, CHU Wenling1,*, YANG Weishen1,#

1State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received:2009-07-25 Online:2009-07-25 Published:2013-04-24

Abstract

Abstract: There is a strong interaction between CeO2 and Al2O3 in the Ce-Al mixed oxide. Some aluminum can be incorporated into the CeO2 lattice to change the lattice oxygen mobility. The existence of -Al2O3 improved the thermal stability of CeO2 as a “diffusion barrier”, which induced a higher catalytic activity for the mixed oxide compared to pure CeO2.

Key words: ceria, alumina, thermal stability, diffusion barrier, soot combustion

SUN Shumin;CHU Wenling;*;YANG Weishen;#. Ce-Al Mixed Oxide with High Thermal Stability for Diesel Soot Combustion[J]. Chinese Journal of Catalysis, 2009, 30(7): 685-689.

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Ce-Al Mixed Oxide with High Thermal Stability for Diesel Soot Combustion

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