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EXAFS study of gamma-Mo2N and Mo nitrides supported on zeolites
Liu, ZL; Meng, M; Fu, YL; Jiang, M; Hu, TD; Xie, YN; Liu, T; Hu TD(胡天斗); Xie YN(谢亚宁); Liu T(刘涛)
2002
发表期刊MATERIALS LETTERS
卷号54期号:5-6页码:364-371
通讯作者Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Anhui, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China
摘要By analysis of the extended X-ray absorption fine structure (EXAFS) of the Mo K-absorption edge, the structural information of both oxidic and nitrided Mo catalysts supported on zeolites was obtained. The supported MoO3 samples show three peaks in the radial structure function (RSF). The first two peaks represent the nearest Mo-O coordination shell and the ratio of the first peak to the second one is much larger than that of the MoO3 crystallites, which suggests that the MoO3 supported on zeolites has a compact structure than the unsupported one. Three peaks on the RSF Of gamma-Mo2N represent one Mo-N and two Mo-Mo coordination shells, respectively. This is in good agreement with the face-centered cubic model. Calculation from X-ray diffraction data and EXAFS spectra reveals that the N atoms in gamma-Mo2N lengthen the distance between Mo atoms and weaken the Mo-Mo bond. Supported Mo2N samples give out nearly the same RSFs as the gamma-Mo2N and only the peak corresponding to Mo-N shell is weak. This suggests the supported Mo2N has more configurational disorder. (C) 2002 Elsevier Science B.V. All rights reserved.
文章类型Article
关键词zeolite supports molybdenum nitride catalysts EXAFS (X-ray absorption fine structure) structure
学科领域Materials Science; Physics
DOI10.1016/S0167-577X(01)00595-X
研究领域[WOS]Materials Science ; Physics
URL查看原文
语种英语
WOS类目Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号WOS:000175966100007
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237177
专题多学科研究中心
中国科学院高能物理研究所_中国散裂中子源
作者单位中国科学院高能物理研究所
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Liu, ZL,Meng, M,Fu, YL,et al. EXAFS study of gamma-Mo2N and Mo nitrides supported on zeolites[J]. MATERIALS LETTERS,2002,54(5-6):364-371.
APA Liu, ZL.,Meng, M.,Fu, YL.,Jiang, M.,Hu, TD.,...&刘涛.(2002).EXAFS study of gamma-Mo2N and Mo nitrides supported on zeolites.MATERIALS LETTERS,54(5-6),364-371.
MLA Liu, ZL,et al."EXAFS study of gamma-Mo2N and Mo nitrides supported on zeolites".MATERIALS LETTERS 54.5-6(2002):364-371.
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