期刊
JOURNAL OF CATALYSIS
卷 230, 期 1, 页码 249-253出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2004.11.042
关键词
LaCoO3 perovskites; siliceous mesoporous SBA-15; microwave-assisted processing (MAP); lattice defects; methane combustion
Highly crystalline LaCoO3 perovskite particles were prepared by a novel nuicrowave-assisted process with a La-Co citrate complex precursor in the host pores of mesoporous SBA-15 silica. The resulting material exhibited considerably higher catalytic activity in the complete methane oxidation than a LaCoO3/SBA-15 sample prepared by a conventional method with a bulk LaCoO3 perovskite. This suggests that a higher density of lattice defects achieved on the high-surface-area LaCoO3 nanocrystals synthesized by microwave processing is essential for the superior performance of the catalyst. (C) 2004 Elsevier Inc. All rights reserved.
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