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题名: Water-gas shift reaction in a Pd membrane reactor over Pt/Ce0.6Zr0.4O2 catalyst
作者: Bi, Yadong1;  Xu, Hengyong1;  Li, Wenzhao1;  Goldbach, Andreas1
关键词: Water-gas shift reaction ;  Pd membrane reactor ;  Pt/Ce0.6Zr0.4O2 catalyst ;  H-2 recovery ;  CO methanation
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2009-04-01
DOI: 10.1016/j.ijhydene.2009.01.046
卷: 34, 期:7, 页:2965-2971
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: A water-gas shift (WGS) Pt/Ce0.6Zr0.4O2 catalyst has been prepared, which exhibits much faster kinetics than conventional high-temperature ferrochrome catalysts in the temperature range most suitable for operation of WGS Pd membrane reactors, i.e. above 623 K. The performance of the Pt catalyst was tested in a reactor furnished with a supported, 1.4 mu m thick high-flux Pd membrane using feeds obtained by autothermal reforming of natural gas. CO conversion remained above thermodynamic equilibrium up to feed space velocities of 9100 l kg(-1) h(-1) at 623 K, P-total = 1.2 MPa and steam-to-carbon ratio S/C = 3, but H-2 recovery decreased from 84.8% at GHSV = 4050 l kg(-1) h(-1) to 48.7% at the highest space velocity. This rapid decline of separation performance is attributed to slow H-2 diffusion through the catalyst bed, suggesting that external mass flow resistance has a significant impact on the H-2 permeation rate in such membrane reactors. This could be minimized by the development of WGS catalysts with even faster kinetics which would allow further reduction of the catalyst bed height. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: NOBLE-METAL CATALYSTS ;  PERFORMANCE ;  GENERATION ;  MIXTURES ;  HYDROGEN ;  CERIA
语种: 英语
WOS记录号: WOS:000265473900013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141400
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, Appl Catalysis Lab, Dalian 116023, Peoples R China

Recommended Citation:
Bi, Yadong,Xu, Hengyong,Li, Wenzhao,et al. Water-gas shift reaction in a Pd membrane reactor over Pt/Ce0.6Zr0.4O2 catalyst[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2009,34(7):2965-2971.
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