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题名: Hydrogen production by steam reforming of ethanol over an Ir/CeO2 catalyst: Reaction mechanism and stability of the catalyst
作者: Zhang, Baocai1;  Cai, Weijie1;  Li, Yong1;  Xu, Yide1;  Shen, Wenjie1
通讯作者: 申文杰
关键词: Hydrogen ;  Ethanol ;  Steam reforming ;  Ir/CeO2 catalyst ;  Mechanism ;  Stability
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2008-08-01
DOI: 10.1016/j.ijhydene.2008.05.022
卷: 33, 期:16, 页:4377-4386
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 501
产权排名: 1;1
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: Steam reforming of ethanol over an Ir/CeO2 catalyst has been studied with regard to the reaction mechanism and the stability of the catalyst. it was found that ethanol dehydrogenation to acetaldehyde was the primary reaction, and acetaldehyde was then decomposed to methane and CO and/or converted to acetone at low temperatures. Methane was further reformed to H-2 and CO, and acetone was directly converted into H-2 and CO2. Addition of CO, CO2, and CH4 to the water/ethanol mixture proved that steam reforming of methane and the water gas shift were the major reactions at high temperatures. The Ir/CeO2 catalyst displayed rather stable performance in the steam reforming of ethanol at 650 degrees C even with a stoichiometric feed composition of water/ethanol, and the effluent gas composition remained constant for 300 h on-stream. The CeO2 in the catalyst prevented the highly dispersed Ir particles from sintering and facilitated coke gasification through strong Ir-CeO2 interaction. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: WATER-GAS-SHIFT ;  SUPPORTED METAL-CATALYSTS ;  FUEL-CELL APPLICATIONS ;  NI-BASED CATALYSTS ;  LOW-TEMPERATURE ;  BIO-ETHANOL ;  THERMODYNAMIC ANALYSIS ;  CERIA ;  PT/CEO2 ;  PERFORMANCE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000259958700020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100197
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, Baocai,Cai, Weijie,Li, Yong,et al. Hydrogen production by steam reforming of ethanol over an Ir/CeO2 catalyst: Reaction mechanism and stability of the catalyst[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2008,33(16):4377-4386.
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