Mesoporous Co(3)O(4)-CeO(2) and Pd/Co(3)O(4)-CeO(2) catalysts: Synthesis, characterization and mechanistic study of their catalytic properties for low-temperature CO oxidation
Luo, JY; Meng, M; Li, X; Li, XG; Zha, YQ; Hu, TD; Xie, YN; Zhang, J;胡天斗; Xie YN(谢亚宁); Zhang J(张静)
刊名JOURNAL OF CATALYSIS
2008
卷号254期号:2页码:310-324
关键词cobalt oxide ceria palladium mesoporous catalyst CO oxidation structural characterization synergy mechanism
学科分类Chemistry; Engineering
DOI10.1016/j.jcat.2008.01.007
英文摘要Several nanosized catalysts Co(3)O(4)-CeO(2) with varying compositions were synthesized by a surfactant-template method and further promoted by a small amount of I'd (0.5 wt%). These catalysts exhibit uniform mesoporous structure and high surface area (> 100 m(2) g(-1)). The Co(3)O(4) crystallites in these catalysts are encapsulated by nanosized CeO(2) with only a small fraction of Co ions exposing on the surface and strongly interacting with CeO(2). Such structure maximizes the interaction between Co(3)O(4) and CeO(2) in three dimensions, resulting in unique redox properties. The introduction of Pd prominently enhances both the reduction and oxidation performance of the catalysts, due to hydrogen or oxygen spillover. These catalysts prepared by surfactant-template method exhibit excellent oxidation performance, especially the ones promoted with Pd, which show markedly enhanced CO oxidation activity even at room temperature. Based upon the results of structural properties, redox behaviors and in situ DRIFTS study, two different reaction pathways over Co(3)O(4)-CeO(2) and Pd/Co(3)O(4)-CeO(2) are proposed. (C) 2008 Elsevier Inc. All rights reserved.
收录类别SCI
WOS记录号WOS:000255533700017
引用统计
被引频次:207[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/223935
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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Luo, JY,Meng, M,Li, X,et al. Mesoporous Co(3)O(4)-CeO(2) and Pd/Co(3)O(4)-CeO(2) catalysts: Synthesis, characterization and mechanistic study of their catalytic properties for low-temperature CO oxidation[J]. JOURNAL OF CATALYSIS,2008,254(2):310-324.
APA Luo, JY.,Meng, M.,Li, X.,Li, XG.,Zha, YQ.,...&张静.(2008).Mesoporous Co(3)O(4)-CeO(2) and Pd/Co(3)O(4)-CeO(2) catalysts: Synthesis, characterization and mechanistic study of their catalytic properties for low-temperature CO oxidation.JOURNAL OF CATALYSIS,254(2),310-324.
MLA Luo, JY,et al."Mesoporous Co(3)O(4)-CeO(2) and Pd/Co(3)O(4)-CeO(2) catalysts: Synthesis, characterization and mechanistic study of their catalytic properties for low-temperature CO oxidation".JOURNAL OF CATALYSIS 254.2(2008):310-324.
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