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The state of active Au species in Au/Fe-O catalyst during CO catalytic oxidation
Li, CY; Shen, YN; Hu, RS; Jia, ML; Sheng, SS
关键词Nanogold Iron Oxide Supported Catalyst State Of Gold Carbon Monoxide Catalytic Oxidation
刊名CHINESE JOURNAL OF CATALYSIS
2006-03-01
27期:3页:259-262
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]VOLATILE ORGANIC-COMPOUNDS ; LOW-TEMPERATURE OXIDATION ; SUPPORTED GOLD CATALYSTS ; AMBIENT-TEMPERATURE ; GOLD/IRON OXIDE ; COPRECIPITATION ; HYDROGEN
英文摘要A series of Au/Fe-O catalysts have been prepared by a co-precipitation method from a Mixture of HAuCl4 (.) 4H(2)O and Fe(NO3)(3) (.) 9H(2)O. The most . These catalysts exhibit good catalytic activity for CO oxidation, active catalyst has 100% CO conversion at room temperature. The calcined catalysts were characterized by X-ray diffraction, X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). TEM observations reveal a homogenous distribution of gold particles between 10 and 15 nm on the iron oxide support. XPS results show that partially oxidized gold species exist in these samples. The difference in binding energies of Au 4f between these samples and bulk gold can be interpreted as that the Au 5d electrons partially flow into the Fe 3d orbit to some extent. So the attraction of nucleus in gold atoms is enhanced, resulting in the increase in the binding energies of Au 4f. This fact reflects that there exists an interaction between the gold nanoparticles and the support. For the CO oxidation on the 10 similar to 15 nm Au/Fe-O catalyst, the interaction between nanogold particles and iron oxide has more important influence on catalyst performance than the particle size of nanogold.
语种英语
WOS记录号WOS:000236753400014
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被引频次:6[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/321008/140275
专题中国科学院大连化学物理研究所
作者单位1.Inner Mongolia Univ, Coll Chem & Environm Sci, Hohhot 010022, Inner Mongolia, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Li, CY,Shen, YN,Hu, RS,et al. The state of active Au species in Au/Fe-O catalyst during CO catalytic oxidation[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(3):259-262.
APA Li, CY,Shen, YN,Hu, RS,Jia, ML,&Sheng, SS.(2006).The state of active Au species in Au/Fe-O catalyst during CO catalytic oxidation.CHINESE JOURNAL OF CATALYSIS,27(3),259-262.
MLA Li, CY,et al."The state of active Au species in Au/Fe-O catalyst during CO catalytic oxidation".CHINESE JOURNAL OF CATALYSIS 27.3(2006):259-262.
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