DICP OpenIR
学科主题物理化学
Hydrogen-induced high-temperature segregation in palladium silver membranes
Zeng, Gaofeng1,2; Jia, Haiyuan1; Goldbach, Andreas1; Zhao, Lingfang1; Miao, Shu1; Shi, Lei1,3; Sun, Chenglin1; Xu, Hengyong1; AndreasGoldbach; Xu HY(徐恒泳)
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2014
DOI10.1039/c4cp03245d
16期:46页:25330-25336
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
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
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.
语种英语
WOS记录号WOS:000344989500017
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/143852
专题中国科学院大连化学物理研究所
通讯作者AndreasGoldbach; Xu HY(徐恒泳)
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.,...&徐恒泳.(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.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
2014sGsbV58hQS.PDF(1985KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zeng, Gaofeng]的文章
[Jia, Haiyuan]的文章
[Goldbach, Andreas]的文章
百度学术
百度学术中相似的文章
[Zeng, Gaofeng]的文章
[Jia, Haiyuan]的文章
[Goldbach, Andreas]的文章
必应学术
必应学术中相似的文章
[Zeng, Gaofeng]的文章
[Jia, Haiyuan]的文章
[Goldbach, Andreas]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。