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题名: Permeation hysteresis in PdCu membranes
作者: Yuan, Lixiang1;  Goldbach, Andreas1;  Xu, Hengyong1
通讯作者: 哥德巴赫
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2008-10-09
DOI: 10.1021/jp8049119
卷: 112, 期:40, 页:12692-12695
收录类别: SCI
文章类型: Article
部门归属: 8
项目归属: 801
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: H-2 permeation hysteresis has been observed during cycling of a 3 mu m thick supported PdCu membrane with similar to 50 atom % Pd through the fcc/bcc (face-centered cubic/body-centered cubic) miscibility gap between 723 and 873 K. Structural investigations after annealing of membrane fragments under H-2 at 823 K reveal retardation of the fcc(H) -> bcc(H) transition, which is attributed to the occurrence of metastable hydrogenated fee PdCu(H) phases. The H-2 flux at 0.1 MPa H-2 pressure difference in the well-annealed bcc single phase regime below 723 K can be described by J(H2) = (1.3 +/- 0.2) mol.m(-2).s(-1) exp[(-11.1 +/- 0.6) kJ.mol(-1)/(RT)] and that in the fcc single phase regime above 873 K by J(H2) = (7 +/- 2) mol.m(-2).s(-1) exp[(-30.3 +/- 2.5) kJ.mol(-1)/(RT)].
关键词[WOS]: COPPER-PALLADIUM ALLOYS ;  HYDROGEN-PRODUCTION ;  H-2 ;  SEGREGATION ;  SEPARATION ;  DIFFUSION ;  TRANSPORT
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000259780200020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100567
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

Recommended Citation:
Yuan, Lixiang,Goldbach, Andreas,Xu, Hengyong. Permeation hysteresis in PdCu membranes[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2008,112(40):12692-12695.
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