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Preparation and structural characterization of highly dispersed gamma-Mo2N supported on alumina
Meng, M; Fu, YL; Liu, ZL; Jiang, M; Xie, YN; Hu, TD; 谢亚宁,胡天斗
2002
发表期刊CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
卷号23期号:6页码:1113-1116
通讯作者Univ Sci & Technol China, Dept Phys Chem, Hefei 230026, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要The nitrided Mo/Al2O3 catalysts were prepared by temperature-programmed reaction between NH3 and MoO3/Al2O3. XRD and EXAFS methods were used for the structural characterization. The results of XRD show that the molybdenum species in the supported samples exist as a dispersed MoO3 phase before nitriding. After nitriding, most of the molybdenum species were nitrided to form gamma-Mo2N. The lower intensity of the radial structure functions of Mo K-edge and the smaller coordination number of Mo-N shells accordingly indicate that the gamma-Mo2N in the supported samples possesses a high dispersion, the lower the loading of Mo, the higher the dispersion of gamma-Mo2N on alumina. From the view of coordination distance, it is found that with the increase of dispersion of gamma-Mo2N, the Mo-N distance is a little shortened, which may be resulted from the nano-shortening phenomenum. The values of disorder factors show that the gamma-Mo2N phase in the supported samples has big thermal and structural disorder extent, and with the increase of its dispersion, both the thermal and structural disorder factors increase.
关键词gamma-Mo2N/Al2O3 catalysts preparation structural characterization EXAFS
学科领域Chemistry
研究领域[WOS]Chemistry ; Chemistry
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语种英语
研究领域[WOS]Chemistry ; Chemistry
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000176272300035
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被引频次:1[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/311005/239070
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Meng, M,Fu, YL,Liu, ZL,et al. Preparation and structural characterization of highly dispersed gamma-Mo2N supported on alumina[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2002,23(6):1113-1116.
APA Meng, M.,Fu, YL.,Liu, ZL.,Jiang, M.,Xie, YN.,...&谢亚宁,胡天斗.(2002).Preparation and structural characterization of highly dispersed gamma-Mo2N supported on alumina.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,23(6),1113-1116.
MLA Meng, M,et al."Preparation and structural characterization of highly dispersed gamma-Mo2N supported on alumina".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 23.6(2002):1113-1116.
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