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Fe-57 Mossbauer Spectroscopy of Ir-Fe Catalysts for Preferential CO Oxidation in H-2
Liu Kuo1,2; Zhang Wansheng1; Wang Junhu1; Wang Aiqin1; Huang Yanqiang1; Jin Changzi1; Shen Jianyi3; Zhang Tao1
关键词Carbon Monoxide Selective Oxidation Iridium Iron Quasi Mossbauer Spectroscopy Microcalorimetry Metal-metal Interaction
刊名CHINESE JOURNAL OF CATALYSIS
2010-11-01
DOI10.1016/S1872-2067(10)60122-2
31期:11页:1335-1341
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]CARBON-MONOXIDE ; ROOM-TEMPERATURE ; HYDROGEN ; NANOPARTICLES ; PROMOTION ; SURFACE ; GASES ; PTFE
英文摘要New insights on the interaction between Ir and Fe oxide are reported. Three Ir-Fe catalysts were prepared by different impregnation sequences of an Al2O3 support. Co-impregnation gave a better catalyst for the preferential CO oxidation in H-2 (PROX) reaction. Microcalorimetry data showed that the adsorption of CO and H-2 were different. Quasi in situ Mossbauer data of the three catalysts after reduction, reoxidation, and PROX reaction showed that a strong interaction between Ir and Fe affected the redox properties of the Ir-Fe catalysts. CO conversion was proportional to the concentration of the Fe2+(a) species, thus, Fe2+(a) was an active site in the PROX reaction. The impregnation sequence influenced the interaction between Ir and Fe and consequently, the amount of the active Fe2+(a) species. A strong Ir-Fe interaction stabilized the active Fe2+ sites for activating O-2.
语种英语
WOS记录号WOS:000287274100005
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141901
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Nanjing Univ, Dept Chem, Nanjing 210093, Jiangsu, Peoples R China
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GB/T 7714
Liu Kuo,Zhang Wansheng,Wang Junhu,et al. Fe-57 Mossbauer Spectroscopy of Ir-Fe Catalysts for Preferential CO Oxidation in H-2[J]. CHINESE JOURNAL OF CATALYSIS,2010,31(11):1335-1341.
APA Liu Kuo.,Zhang Wansheng.,Wang Junhu.,Wang Aiqin.,Huang Yanqiang.,...&Zhang Tao.(2010).Fe-57 Mossbauer Spectroscopy of Ir-Fe Catalysts for Preferential CO Oxidation in H-2.CHINESE JOURNAL OF CATALYSIS,31(11),1335-1341.
MLA Liu Kuo,et al."Fe-57 Mossbauer Spectroscopy of Ir-Fe Catalysts for Preferential CO Oxidation in H-2".CHINESE JOURNAL OF CATALYSIS 31.11(2010):1335-1341.
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