Structural and Permeation Kinetic Correlations in PdCuAg Membranes
文献类型：期刊论文
| 作者 | Zhao, Lingfang; Goldbach, Andreas; Bao, Chun; Xu, Hengyong |
| 刊名 | acs applied materials & interfaces
 |
| 出版日期 | 2014-12-24 |
| 卷号 | 6期号:24页码:22408-22416 |
| 关键词 | hydrogen separation ternary alloy Vegard's law kinetic compensation structure-function relationship |
| 通讯作者 | 哥德巴赫 |
| 英文摘要 | addition of ag is a promising way to enhance the h-2 permeability of sulfur-tolerant pdcu membranes for cleanup of coal-derived hydrogen. we investigated a series of pdcuag membranes with at least 70 atom % pd to elucidate the interdependence between alloy structure and h-2 permeability. membranes were prepared via sequential electroless plating of pd, ag, and cu onto ceramic microfiltration membranes and subsequent alloying at elevated temperatures. alloy formation was complicated by a wide miscibility gap in the pdcuag phase diagram at the practically feasible operation temperatures. x-ray diffraction showed that the lattice constants of the fully alloyed ternary alloys obey vegards law closely. in general, h-2 permeation rates increased with increasing ag and decreasing cu content of the membranes in the investigated temperature range. detailed examination of the permeation kinetics revealed compensation between activation energy and pre-exponential factor of the corresponding h-2 permeation laws. the origin of this effect is discussed. further analysis showed that the activation energy for h-2 permeation decreases overall with increasing lattice constant of the ternary alloy. the combination of these correlations results in a structurefunction relationship that will facilitate rational design of pdcuag membranes. |
| WOS标题词 | science & technology ; technology |
| 学科主题 | 物理化学 |
| 类目[WOS] | nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | science & technology - other topics ; materials science |
| 关键词[WOS] | hydrogen separation membranes ; low-temperature h-2 ; alloy membranes ; elevated-temperatures ; mathematical origins ; palladium membranes ; ternary alloy ; pd ; transport ; solubility |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000347139400078 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/143768]  |
| 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, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Lingfang,Goldbach, Andreas,Bao, Chun,et al. Structural and Permeation Kinetic Correlations in PdCuAg Membranes[J]. acs applied materials & interfaces,2014,6(24):22408-22416. |
| APA | Zhao, Lingfang,Goldbach, Andreas,Bao, Chun,&Xu, Hengyong.(2014).Structural and Permeation Kinetic Correlations in PdCuAg Membranes.acs applied materials & interfaces,6(24),22408-22416. |
| MLA | Zhao, Lingfang,et al."Structural and Permeation Kinetic Correlations in PdCuAg Membranes".acs applied materials & interfaces 6.24(2014):22408-22416. |
入库方式： OAI收割
来源：大连化学物理研究所
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