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题名: A study on reduction behaviors of the supported platinum-iron catalysts
作者: Jia, JF;  Shen, JY;  Lin, LW;  Xu, ZS;  Zhang, T;  Liang, DB
关键词: Pt ;  Fe ;  TPR ;  in situ Mossbauer spectroscopy
刊名: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
发表日期: 1999-02-05
卷: 138, 期:2-3, 页:177-184
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The reduction behaviors of the supported platinum-iron catalysts and their comparison with supported iron catalysts were studied by TPR (temperature-programmed reduction)-in situ Fe-57 MBS (Mossbauer spectroscopy). The results indicated that the TPR processes of all Fe-containing catalysts were different from that of bulk alpha-Fe2O3. There were interactions between Pt, Fe and the gamma-Al2O3 or SiO2 support for the Pt-Fe/gamma-Al2O3 and Pt-Fe/SiO2 catalysts. All the iron-containing catalysts show that Fe3+ was highly dispersed on the support (gamma-Al2O3 and SiO2) before reduction. No Fe-0 was found in the reduction processes. The Fe3+ was reduced to Fe2+ in tetrahedral vacancy first for the reduction of the Pt-Fe/gamma-Al2O3 catalyst. No Fe2+ in octahedral vacancy was found in the reduction of the Pt-Fe/SiO2 catalyst. Adding Pt to Fe/support (gamma-Al2O3 or SiO2) could promote the reduction of the Fe species. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词[WOS]: TEMPERATURE-PROGRAMMED REDUCTION ;  X-RAY PHOTOELECTRON ;  PT-SN CATALYSTS ;  METAL-SUPPORT ;  ALUMINA CATALYSTS ;  SPECTROSCOPY ;  STATE ;  TIN
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000078114300008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/85227
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.Acad Sinica, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Nanjing Univ, Dept Chem, Nanjing 210093, Peoples R China

Recommended Citation:
Jia, JF,Shen, JY,Lin, LW,et al. A study on reduction behaviors of the supported platinum-iron catalysts[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,1999,138(2-3):177-184.
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