Water-gas shift reaction in a Pd membrane reactor over Pt/Ce0.6Zr0.4O2 catalyst

	Water-gas shift reaction in a Pd membrane reactor over Pt/Ce0.6Zr0.4O2 catalyst
	Bi, Yadong; Xu, Hengyong; Li, Wenzhao; Goldbach, Andreas
刊名	international journal of hydrogen energy
	2009-04-01
卷号	34 期号:7 页码:2965-2971
关键词	Water-gas shift reaction Pd membrane reactor Pt/Ce0.6Zr0.4O2 catalyst H-2 recovery CO methanation
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.
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
关键词[WOS]	noble-metal catalysts ; performance ; generation ; mixtures ; hydrogen ; ceria
收录类别	SCI
语种	英语
WOS记录号	WOS:000265473900013
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/141400]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, Appl Catalysis Lab, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	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.
APA	Bi, Yadong,Xu, Hengyong,Li, Wenzhao,&Goldbach, Andreas.(2009).Water-gas shift reaction in a Pd membrane reactor over Pt/Ce0.6Zr0.4O2 catalyst.international journal of hydrogen energy,34(7),2965-2971.
MLA	Bi, Yadong,et al."Water-gas shift reaction in a Pd membrane reactor over Pt/Ce0.6Zr0.4O2 catalyst".international journal of hydrogen energy 34.7(2009):2965-2971.