Hydrogen-induced high-temperature segregation in palladium silver membranes
文献类型：期刊论文
| 作者 | Zeng, Gaofeng1,2; Jia, Haiyuan1; Goldbach, Andreas1; Zhao, Lingfang1; Miao, Shu1; Shi, Lei1,3; Sun, Chenglin1; Xu, Hengyong1 |
| 刊名 | physical chemistry chemical physics
 |
| 出版日期 | 2014 |
| 卷号 | 16期号:46页码:25330-25336 |
| 通讯作者 | andreasgoldbach ; 徐恒泳 |
| 英文摘要 | higher operation temperatures benefit h-2 permeability and selectivity of metal membranes and they are interesting for e.g. water gas shift and steam reforming in membrane reactors. hence the behaviour of pdag-ceramic composite membranes has been investigated between 823 k and 923 k. the h-2 flux of membranes with less than 10 mu m thick alloy layers decreased continuously with time during operation under h-2 at 873 k and above. this was accompanied by a steady increase of the activation energy for h-2 permeation and the growth of ag-depleted crystallites on the membrane surface. all phenomena could be reversed through annealing under n-2 at 923 k. the textural and permeability changes are consistent with a segregation mechanism starting with metal sublimation from hydrogenated pdag layers and subsequent metal resublimation. this implies an enhancement of the yet unknown metal activities in pdag hydride phases over metallic pdag alloys. ramifications for application of thin-layered, supported pdag membranes for h-2 separation above 823 k are discussed. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, physical ; physics, atomic, molecular & chemical |
| 研究领域[WOS] | chemistry ; physics |
| 关键词[WOS] | ag alloy membranes ; surface segregation ; thermal-stability ; pd ; separation ; permeation ; diffusion ; adsorption ; kinetics ; reactors |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000344989500017 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/143852]  |
| 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 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Shanghai Adv Res Inst, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai 201210, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Gaofeng,Jia, Haiyuan,Goldbach, Andreas,et al. Hydrogen-induced high-temperature segregation in palladium silver membranes[J]. physical chemistry chemical physics,2014,16(46):25330-25336. |
| APA | Zeng, Gaofeng.,Jia, Haiyuan.,Goldbach, Andreas.,Zhao, Lingfang.,Miao, Shu.,...&Xu, Hengyong.(2014).Hydrogen-induced high-temperature segregation in palladium silver membranes.physical chemistry chemical physics,16(46),25330-25336. |
| MLA | Zeng, Gaofeng,et al."Hydrogen-induced high-temperature segregation in palladium silver membranes".physical chemistry chemical physics 16.46(2014):25330-25336. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。