Study of n value and alpha/beta palladium hydride phase transition within the ultra-thin palladium composite membrane
文献类型：期刊论文
| 作者 | Li, Hui; Xu, Hengyong; Li, Wenzhao |
| 刊名 | journal of membrane science
 |
| 出版日期 | 2008-10-31 |
| 卷号 | 324期号:1-2页码:44-49 |
| 关键词 | H(2) permeation n value surface process alpha -> beta palladium hydride phase transition nanostructure |
| 英文摘要 | the gas permeation of a 2 mu m thick pd membrane was examined between 363 k and 773 k with p(feed) ranging from 1.4 bar to 3.8 bar and p(perm) fixed at atmospheric pressure. the pressure exponent value ranged from 0.68 to 1.0, and it gradually decreased with increasing temperature and pressure. the transformation of rate-limiting step and enhancement of surface process were suggested to the main reason for the fluctuation of n value, and the influence of contaminant species on the n value can be excluded in this study. the h(2) permeation flux of the membrane gave a marked change forming a peak at 413 k and 443 k with p(feed) = 2 bar and 3 bar, respectively. these two peaks can be ascribed to the alpha/beta palladium hydride phase transition. the metal membrane delaminated from the support after hydrogen embrittlement but it still maintained the nanostructure. the phase transition temperature range (20 k) for our 2 mu m thick membrane was smaller than that of a 25 mu m thick one (above 40 k) described in the literature. (c) 2008 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; technology ; physical sciences |
| 类目[WOS] | engineering, chemical ; polymer science |
| 研究领域[WOS] | engineering ; polymer science |
| 关键词[WOS] | hydrogen permeation behavior ; pd membranes ; separation ; absorption ; permeability ; resistance ; transport ; support ; layers |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000259792000005 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141023]  |
| 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 | Grad Univ Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Hui,Xu, Hengyong,Li, Wenzhao. Study of n value and alpha/beta palladium hydride phase transition within the ultra-thin palladium composite membrane[J]. journal of membrane science,2008,324(1-2):44-49. |
| APA | Li, Hui,Xu, Hengyong,&Li, Wenzhao.(2008).Study of n value and alpha/beta palladium hydride phase transition within the ultra-thin palladium composite membrane.journal of membrane science,324(1-2),44-49. |
| MLA | Li, Hui,et al."Study of n value and alpha/beta palladium hydride phase transition within the ultra-thin palladium composite membrane".journal of membrane science 324.1-2(2008):44-49. |
入库方式： OAI收割
来源：大连化学物理研究所
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