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A study on reduction behaviors of the supported platinum-iron catalysts
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
1999-02-05
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
关键词[WOS]TEMPERATURE-PROGRAMMED REDUCTION ; X-RAY PHOTOELECTRON ; PT-SN CATALYSTS ; METAL-SUPPORT ; ALUMINA CATALYSTS ; SPECTROSCOPY ; STATE ; TIN
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.
语种英语
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WOS记录号WOS:000078114300008
引用统计
被引频次:24[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/321008/85227
专题中国科学院大连化学物理研究所
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
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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.
APA Jia, JF,Shen, JY,Lin, LW,Xu, ZS,Zhang, T,&Liang, DB.(1999).A study on reduction behaviors of the supported platinum-iron catalysts.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,138(2-3),177-184.
MLA Jia, JF,et al."A study on reduction behaviors of the supported platinum-iron catalysts".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 138.2-3(1999):177-184.
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