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Influence of extra-framework Al on the structure of the active iron sites in Fe/ZSM-35
Wang, Junying1,2; Xia, Haian1; Ju, Xiaohua1; Feng, Zhaochi1; Fan, Fengtao1; Li, Can1
关键词Binuclear Iron Sites Extra-framework Al N2o Decomposition Fe/zsm-35 Raman Spectroscopy
刊名JOURNAL OF CATALYSIS
2013-04-01
DOI10.1016/j.jcat.2013.01.011
300页:251-259
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]RESONANCE RAMAN-SPECTROSCOPY ; CHARGE-TRANSFER SPECTRA ; STATE ION-EXCHANGE ; LOW FE CONTENT ; N2O DECOMPOSITION ; NITROUS-OXIDE ; BENZENE HYDROXYLATION ; IN-SITU ; HETEROGENEOUS CATALYSIS ; MOSSBAUER-SPECTROSCOPY
英文摘要The influence of extra-framework Al via AlCl3 deposition on the structure of the active Fe sites in Fe/ZSM-35 was investigated by Si-29 MAS NMR, UV-visible diffuse reflectance spectroscopy, infrared spectroscopy, UV Raman spectroscopy, and Fe-57 Mossbauer spectroscopy combined with catalytic decomposition of N2O. It is found that high-temperature treatment considerably modifies the iron speciation. UV-visible diffuse reflectance spectra and in situ infrared spectra of NO adsorption show that a significant amount of clustered and cationic Fe species is transformed into extra-framework Fe-O-Al mixed oxide species by high-temperature treatment. UV Raman spectra and Fe-57 Mossbauer spectra suggest the generation of a binuclear Fe site stabilized by extra-framework Al species with a feature Raman band at 875 cm(-1), which is associated with the high activity of N2O decomposition. A possible explanation is that the addition of extra-framework Al species is beneficial for the formation of binuclear active Fe sites bound to extra-framework Al. (C) 2013 Published by Elsevier Inc.
语种英语
WOS记录号WOS:000317558000028
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被引频次:21[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/321008/137792
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, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Wang, Junying,Xia, Haian,Ju, Xiaohua,et al. Influence of extra-framework Al on the structure of the active iron sites in Fe/ZSM-35[J]. JOURNAL OF CATALYSIS,2013,300:251-259.
APA Wang, Junying,Xia, Haian,Ju, Xiaohua,Feng, Zhaochi,Fan, Fengtao,&Li, Can.(2013).Influence of extra-framework Al on the structure of the active iron sites in Fe/ZSM-35.JOURNAL OF CATALYSIS,300,251-259.
MLA Wang, Junying,et al."Influence of extra-framework Al on the structure of the active iron sites in Fe/ZSM-35".JOURNAL OF CATALYSIS 300(2013):251-259.
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