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题名: Synthesis, characterization and catalytic properties of bimetallic ZrMo2Nx-Mo2N nitrides of high surface area
作者: Zhang, Y;  Li, Y;  Raval, R;  Li, C;  Zhai, R;  Xin, Q
关键词: nitride ;  bimetallic ;  catalysis ;  molybdenum ;  zirconium ;  XRD ;  SEM ;  FTIR ;  HDS ;  TPD ;  DTA ;  topotactic ;  impregnation ;  coprecipitation ;  MoO3 ;  Mo2N
刊名: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
发表日期: 1998-06-15
卷: 132, 期:2-3, 页:241-253
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A set of bimetallic nitrides, ZrMo2Nx-Mo2N, of high specific surface area up to 132 m(2)/g has been synthesized by temperature programmed nitriding (TPN) mixtures of Zr- and Mo-containing compounds with ammonia. Two series of precursors have been studied using XRD, SEM and FT-m. It is found that the structure and composition of the end-products depend on the properties of the precursors and these, in turn, are influenced to a large extent by the preparation method of the precursor, i.e. using impregnation or using coprecipitation. The end-catalysts obtained from precursors prepared by impregnation are composed of ZrO2-Mo2N while those from precursors prepared by coprecipitation consist of ZrMo2Nx-Mo2N. XRD and SEM results reveal that the characteristic platelet structure of MoO3 is damaged upon the introduction of the second metal component by coprecipitation, but is retained when using impregnation. The catalytic activities of the bimetallic nitrides for the hydrogenation of cyclohexene and the hydrodesulfurization of thiophene are found, under medium pressures (3.0 MPa), to compare favourably with those of a commercial sulfided NiCoMo/Al2O3 catalyst and unsupported gamma-Mo2N. H-2-TPD results indicate that the bimetallic nitrides possess a more extensive capacity for hydrogen adsorption in low temperature states. (C) 1998 Elsevier Science B.V. All rights reserved.
关键词[WOS]: TRANSITION-METAL CARBIDES ;  MOLYBDENUM NITRIDE ;  HYDROGENATION ;  HYDRODESULFURIZATION ;  TUNGSTEN ;  HYDRODENITROGENATION ;  MO2N
语种: 英语
WOS记录号: WOS:000074430600011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138105
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.Univ Liverpool, Dept Chem, Leverhulme Ctr Innovat Catalysis, Liverpool L69 3BX, Merseyside, England
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Univ Liverpool, Dept Chem, Interdisciplinary Res Ctr Surface Sci, Liverpool L69 3BX, Merseyside, England

Recommended Citation:
Zhang, Y,Li, Y,Raval, R,et al. Synthesis, characterization and catalytic properties of bimetallic ZrMo2Nx-Mo2N nitrides of high surface area[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,1998,132(2-3):241-253.
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