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题名: Microcalorimetric and IR spectroscopic studies of CO adsorption on molybdenum nitride catalysts
作者: Wu, ZL;  Maroto-Valiente, A;  Guerrero-Ruiz, A;  Rodriguez-Ramos, I;  Li, C;  Xin, Q
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
发表日期: 2003
DOI: 10.1039/b300634d
卷: 5, 期:8, 页:1703-1707
收录类别: SCI
文章类型: Article
部门归属: 503
项目归属: 503
产权排名: 2;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: The adsorption of CO on both nitrided and reduced passivated Mo(2)N catalysts in either alumina supported or unsupported forms was studied by adsorption microcalorimetry and infrared (IR) spectroscopy. The CO is adsorbed on nitrided Mo(2)N catalysts on three different surface sites: 4-fold vacancies, Mo(delta+) ( 0 < delta < 2) and N sites, with differential heats of CO adsorption decreasing in the same order. The presence of the alumina-support affects the energetic distribution of the adsorption sites on the nitrided Mo(2)N, i.e. weakens the CO adsorption strength on the different sites and changes the fraction of sites adsorbing CO in a specific form, revealing that the alumina supported Mo(2)N phase shows lower electron density than pure Mo(2)N. On reduced passivated Mo(2)N catalysts the CO was found to adsorb mainly on Mo(4+) sites, although some slightly different surface Mo(delta+) d (0 < delta < 2) sites are also detected. The nature, density and distribution of surface sites of reduced passivated Mo(2)N/gAl(2)O(3) were similar to those on reduced MoO(3)/gamma-Al(2)O(3).
关键词[WOS]: MO2N/GAMMA-AL2O3 CATALYST ;  SURFACE SITES ;  ALUMINA ;  HYDRODESULFURIZATION ;  ZIRCONIA ;  1-BUTENE ;  TITANIA ;  CARBON
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000181919000032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/82939
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 Nacl Educ Distancia, Fac Ciencias, Dpto Inorgan & Tecn, Madrid, Spain
2.CSIC, Inst Catalisis & Petr Quim, Madrid 28049, Spain
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Wu, ZL,Maroto-Valiente, A,Guerrero-Ruiz, A,et al. Microcalorimetric and IR spectroscopic studies of CO adsorption on molybdenum nitride catalysts[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2003,5(8):1703-1707.
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