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题名: Preparation and hydrogen permeation of SrCe0.95Y0.05O3-delta asymmetrical membranes
作者: Zhan, Shijing1, 2;  Zhu, Xuefeng1;  Ji, Baofeng1, 2;  Wang, Weiping1;  Zhang, Xiaoliang1, 2;  Wang, Jibo1, 2;  Yang, Weishen1;  Lin, Liwu1
关键词: Asymmetrical membrane ;  SrCe0.95Y0.05O3-delta ;  Ceramic membrane ;  Hydrogen permeation ;  Mixed protonic/electronic membrane
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2009-09-15
DOI: 10.1016/j.memsci.2009.05.037
卷: 340, 期:1-2, 页:241-248
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: Asymmetrical thin membranes of SrCe0.95Y0.05O3-delta (SCY) were prepared by a conventional and cost-effective dry pressing method. The substrate consisted of SCY, NiO and soluble starch (SS), and the top layer was the SCY. NiO was used as a pore former and soluble starch was used to control the shrinkage of the substrate to match that of the top layer. Crack-free asymmetrical thin membranes with thicknesses of about 50 mu m and grain sizes of 5-10 mu m were successfully pressed on to the substrates. Hydrogen permeation fluxes (J(H2)) of these thin membranes were measured under different operating conditions. At 950 degrees C,J(H2) of the 50 mu m SCY asymmetrical membrane towards a mixture of 80% H-2/He was as high as 7.6 x 10(-8) mol/cm(2)s, which was about 7 times higher than that of the symmetrical membranes with a thickness of about 620 mu m. The hydrogen permeation properties of SCY asymmetrical membranes were investigated and activation energies for hydrogen permeation fluxes were calculated. The slope of the relationship between the hydrogen permeation fluxes and the thickness of the membranes was -0.72, indicating that permeation in SCY asymmetric membranes was controlled by both bulk diffusion and surface reaction in the range investigated. (C) 2009 Elsevier B.V. All rights reserved.
关键词[WOS]: PROTON-CONDUCTING CERAMICS ;  LOW-TEMPERATURE SOFCS ;  OXIDE FUEL-CELLS ;  STABILITY ;  SRCEO3 ;  PERMEABILITY ;  SR
语种: 英语
WOS记录号: WOS:000268346900027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141589
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
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Zhan, Shijing,Zhu, Xuefeng,Ji, Baofeng,et al. Preparation and hydrogen permeation of SrCe0.95Y0.05O3-delta asymmetrical membranes[J]. JOURNAL OF MEMBRANE SCIENCE,2009,340(1-2):241-248.
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