Preparation and structural characterization of highly dispersed gamma-Mo2N supported on alumina

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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
刊名	CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
	2002
卷号	23 期号:6 页码:1113-1116
关键词	gamma-Mo2N/Al2O3 catalysts preparation structural characterization EXAFS
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
英文摘要	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.
学科主题	Chemistry
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
原文出处	SCI
语种	英语
WOS记录号	WOS:000176272300035
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239070]
专题	中国科学院高能物理研究所_中国散裂中子源高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	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.