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题名: Hydrogen transport through thin palladium-copper alloy composite membranes at low temperatures
作者: Zhang, Xiaoliang1, 2;  Wang, Weiping1, 2;  Liu, Jie1;  Sheng, Shishan1;  Xiong, Guoxing1;  Yang, Weishen1
关键词: Pd-Cu alloy ;  hydrogen ;  activation energy ;  surface segregation
刊名: THIN SOLID FILMS
发表日期: 2008-02-29
DOI: 10.1016/j.tsf.2007.08.132
卷: 516, 期:8, 页:1849-1856
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ;  Materials Science, Coatings & Films ;  Physics, Applied ;  Physics, Condensed Matter
研究领域[WOS]: Materials Science ;  Physics
英文摘要: Hydrogen permeation performance of three thin palladium- copper composite membranes with different thicknesses had been studied between 398 K and 753 K. Hydrogen permeance was obtained up to 2.7 x 10(-6) mol/(m(2) s Pa) with an ideal selectivity over 1000 at 753 K. The hydrogen permeation exhibited two different activation energies over the temperature range: lower activation energy of about 9.8 kJ/mol above 548 K, while higher activation energy of about 26.4 U/mol below 548 K. After permeation tests, the alloy membranes were characterized by X-ray photoelectron spectroscopy, scanning electron microscopy, energy dispersive X-ray analysis and in situ X-ray diffraction. Palladium segregation on the surface of these palladium-copper alloys may induce changes of hydrogen permeation performance and thus influence the activation energies. (C) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: POROUS STAINLESS-STEEL ;  PD-CU MEMBRANES ;  MICROSYSTEM TECHNOLOGY ;  SURFACE SEGREGATION ;  PERMEATION ;  SEPARATION ;  FLUX ;  ALUMINA ;  SYSTEM ;  H-2
语种: 英语
WOS记录号: WOS:000253872200030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140801
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:
Zhang, Xiaoliang,Wang, Weiping,Liu, Jie,et al. Hydrogen transport through thin palladium-copper alloy composite membranes at low temperatures[J]. THIN SOLID FILMS,2008,516(8):1849-1856.
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