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题名: Selective hydrogen production from methanol oxidative steam reforming over Zn-Cr catalysts with or without Cu loading
作者: Hong, Xuelun1;  Ren, Suzhen2
关键词: methanol oxidative steam reforming ;  ZnCrCu catalyst ;  H-2 production ;  CO selectivity
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2008
DOI: 10.1016/j.ijhydene.2007.10.031
卷: 33, 期:2, 页:700-708
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: Production of H-2 from methanol oxidative steam reforming (OSRM) over Zn-Cr, high or low Cu-loading Zn-Cr-Cu catalysts was studied. The catalysts were prepared by urea-nitrate combustion approach and characterized by BET, X-ray diffraction (XRD), and temperature-programmed reduction (TPR). The influence of reaction temperature and catalyst formulation on activity, selectivity and stability were investigated. Distinct differences between the processes were observed with respect to catalyst behavior. The ZnCr catalyst without Cu has the highest stability. Zn-Cr-Cu oxide solid solution is formed by adding small amount of Cu to the ZnCr catalyst, and significantly improves the activity and suppresses CO formation. The quick deactivation of the high Cu-loading catalyst is due to Cu sintering. CO is produced via methanol decomposition on ZnCr or ZnCrCu with low Cu-content, and it may be from two pathways of methanol decomposition and reverse water gas shift on the high Cu-contained catalysts. Low Cu-containing catalysts, especially ZnCrCu2.5, exhibit the best performance of complete methanol conversion, less than 1% CO at the production gas and excellent stability at middle temperature of 350 degrees C in OSRM, and display great potential in fuel cell applications. (C) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: FUEL-CELL APPLICATIONS ;  CU/ZNO/AL2O3 CATALYST ;  CUZNAL(ZR)-OXIDE CATALYSTS ;  CUO-CEO2 CATALYSTS ;  LOW-TEMPERATURE ;  AL CATALYSTS ;  PERFORMANCE ;  PD/ZNO ;  DECOMPOSITION ;  DEACTIVATION
语种: 英语
WOS记录号: WOS:000253791300026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140986
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China

Recommended Citation:
Hong, Xuelun,Ren, Suzhen. Selective hydrogen production from methanol oxidative steam reforming over Zn-Cr catalysts with or without Cu loading[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2008,33(2):700-708.
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