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题名: The roles of hydroxyapatite and FeOx in a Au/FeOx-hydroxyapatite catalyst for CO oxidation
作者: Zhao Kunfeng1, 2;  Qiao Botao1;  Zhang Yanjie1;  Wang Junhu1
关键词: Gold ;  Iron oxide ;  Hydroxyapatite ;  Carbon monoxide ;  Sintering resistance
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2013-07-01
DOI: 10.1016/S1872-2067(12)60590-7
卷: 34, 期:7, 页:1386-1394
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
英文摘要: A FeOx modified hydroxyapatite (HAP, Ca-10(PO4)(6)(OH)(2))-supported gold catalyst is highly active and stable during CO oxidation at low temperature, and it is also sinter-resistant to calcination at temperature up to 600 degrees C. This work used catalyst characterization and activity tests to investigate the roles of the HAP support and FeOx promoter in CO oxidation. XPS results suggested that a strong interaction between the HAP support and the Au and FeOx nanoparticles gave the sintering resistance. In situ DRIFT studies revealed that the addition of FeOx changed the nature of the reaction mechanism and intermediates to promote catalytic activity. TEM and Mossbauer examination of the spent catalysts in combination with the in situ DRIFT results suggested that the better stability of Au/FeOx-HAP originated from its better prevention of carbonate accumulation. (C) 2013, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: SUPPORTED GOLD CATALYSTS ;  SELECTIVE OXIDATION ;  CARBON-MONOXIDE ;  TEMPERATURE ;  PERFORMANCE ;  FE2O3 ;  PHOSPHATES ;  ADSORPTION ;  MECHANISM ;  AL2O3
语种: 英语
WOS记录号: WOS:000322425500014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137717
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhao Kunfeng,Qiao Botao,Zhang Yanjie,et al. The roles of hydroxyapatite and FeOx in a Au/FeOx-hydroxyapatite catalyst for CO oxidation[J]. CHINESE JOURNAL OF CATALYSIS,2013,34(7):1386-1394.
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