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题名: NiMoNx/gamma-Al2O3 catalyst for HDN of pyridine
作者: Chu, YJ;  Wei, ZB;  Yang, SW;  Li, C;  Xin, Q;  Min, EZ
关键词: NiMoNx/gamma-Al2O3 ;  Ni3Mo3N ;  HDN of pyridine ;  synergy
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 1999-01-11
卷: 176, 期:1, 页:17-26
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: A series of NiMoNx/gamma-Al2O3 catalysts with various Ni contents were prepared by a topotactic reaction between their corresponding precursors NiO.MoO3/gamma-Al2O3 and NH3. The catalysts were characterized using BET, XRD, and H-2-TPR techniques, and the HDN activity of pyridine over these catalysts was tested. XRD patterns show that metallic Ni, Mo2N and a new phase of Ni3Mo3N exist in NiMoNx/gamma-Al2O3 catalyst. H-2-TPR studies indicate that the presence of Ni lowers the reduction temperature of the passivated surface layer of nitrided Mo/gamma-Al2O3. The HDN activity for NiMoNx/gamma-Al2O3 is much higher than that for NiMoSx/gamma-Al2O3. The nitride catalyst with about 5.0 wt% NiO and 15.0 wt% MoO3 in its precursor has the highest specific denitrogenation activity. The appearance of Ni3Mo3N and the synergy between metallic Ni and nitrided Mo are probably responsible for the high activity of NiMoNx/gamma-Al2O3 catalyst. The role of Ni in HDN reaction was also investigated. The activities decrease in the order: reduced Ni/gamma-Al(2)O(3)greater than or equal to nitrided Ni/gamma-Al2O3>partially reduced Ni/gamma-Al2O3 and sulfided Ni/gamma-Al2O3. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词[WOS]: MOLYBDENUM NITRIDE ;  HYDRODENITROGENATION ;  CARBIDES ;  SURFACE ;  HYDRODESULFURIZATION ;  HYDROGENOLYSIS ;  HYDROGENATION ;  AMMONIA ;  TPR ;  CO
语种: 英语
WOS记录号: WOS:000078114400003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138593
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Acad Sinica, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Res Inst Petr Proc, Beijing 100083, Peoples R China

Recommended Citation:
Chu, YJ,Wei, ZB,Yang, SW,et al. NiMoNx/gamma-Al2O3 catalyst for HDN of pyridine[J]. APPLIED CATALYSIS A-GENERAL,1999,176(1):17-26.
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