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Dynamic structural changes of perovskite-supported metal catalysts during cyclic redox treatments and effect on catalytic CO oxidation
Gao Kang1; Wei Mingming2; Qu Zhenping1; Fu Qiang2; Bao Xinhe2
关键词Perovskite Oxide Silver Platinum Redox Treatment Structural Modification Carbon Monoxide Oxidation
刊名CHINESE JOURNAL OF CATALYSIS
2013-05-01
DOI10.1016/S1872-2067(12)60581-6
34期:5页:889-897
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]METHANE ; COMBUSTION ; BACE1-XPDXO3-DELTA ; TEMPERATURES ; PALLADIUM ; OXIDES ; SILVER
英文摘要CaTiO3-and BaTiO3-supported Ag and Pt catalysts were subjected to cyclic oxidation and reduction treatments and their surface structures were investigated using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The CO oxidation reactions over the Ag and Pt catalysts showed that the oxidized Ag/oxide catalysts performed better in CO oxidation than the reduced ones did, whereas the reduced Pt/oxide catalysts had higher CO oxidation activity than that after oxidation treatment. The XRD and XPS measurements revealed that the oxidation treatment helped to improve the dispersion of Ag nanoparticles, but their metallic state was retained, which enhanced CO oxidation. In contrast, the surfaces of the Pt nanoparticles were dominated by PtO2 after the oxidation treatment, which lowered the CO oxidation activity compared with that of the reduced Pt catalyst. (C) 2013, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000318744600009
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/137818
专题中国科学院大连化学物理研究所
作者单位1.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
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GB/T 7714
Gao Kang,Wei Mingming,Qu Zhenping,et al. Dynamic structural changes of perovskite-supported metal catalysts during cyclic redox treatments and effect on catalytic CO oxidation[J]. CHINESE JOURNAL OF CATALYSIS,2013,34(5):889-897.
APA Gao Kang,Wei Mingming,Qu Zhenping,Fu Qiang,&Bao Xinhe.(2013).Dynamic structural changes of perovskite-supported metal catalysts during cyclic redox treatments and effect on catalytic CO oxidation.CHINESE JOURNAL OF CATALYSIS,34(5),889-897.
MLA Gao Kang,et al."Dynamic structural changes of perovskite-supported metal catalysts during cyclic redox treatments and effect on catalytic CO oxidation".CHINESE JOURNAL OF CATALYSIS 34.5(2013):889-897.
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