DICP OpenIR
High-temperature stability of Pd alloy membranes containing Cu and Au
Jia, Haiyuan1,2; Wu, Ping3; Zeng, Gaofeng3; Salas-Colerad, Eduardo4,5; Serranod, Aida4,5; Castrod, German R.4,5; Xu, Hengyong1; Sun, Chenglin1; Goldbach, Andreas1
关键词Ternary Pd Alloy Membrane High-temperature Stability Alloy Segregation Pdcu Membrane Pdau Membrane
刊名JOURNAL OF MEMBRANE SCIENCE
2017-12-15
DOI10.1016/j.memsci.2017.09.012
544页:151-160
收录类别SCI
文章类型Article
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]POROUS STAINLESS-STEEL ; SOLID-SOLUTION ALLOYS ; HYDROGEN SEPARATION ; COMPOSITE MEMBRANES ; PERMEATION CHARACTERISTICS ; INTERMETALLIC DIFFUSION ; THERMAL-STABILITY ; METAL MEMBRANES ; TERNARY ALLOY ; PALLADIUM
英文摘要High-temperature stability of Pd-based membranes benefits their application in steam reformers and sulfur-contaminated H-2 streams because both membrane reforming efficiency and sulfur tolerance of Pd alloys increase much with temperature. Hence, we investigated PdCu, PdAu, and PdCuAu membranes supported on porous ceramic tubes between 500 degrees C and 650 degrees C. Remarkably, PdCu membranes were much more stable than Au-containing ones. The H-2 permeation rates of some PdAu and PdCuAu membranes declined at 550 degrees C with substantially increasing N-2 fluxes. This was triggered by severe morphological deformation of the Au alloy films into stoichiometrically inhomogeneous, cavernous structures. The H-2 fluxes of the PdCu membranes started to decline at 650 degrees C with leak flows increasing slightly. Moreover, the PdCu layer morphology remained dense and compositionally homogeneous even after testing for up to 4800 h between 500 and 650 degrees C. The strikingly different high-temperature stability can be understood by considering the divergent surface segregation tendencies of Cu and Au and their differing impact on hydrogen solubility in Pd alloys. As a result, Au may desorb much more easily from membranes than Cu leading to structural instability above 500 degrees C during operation in H-2. The instability of PdAu membranes at high temperatures may be mitigated by addition of sufficient Cu to obtain ternary membranes with good H-2 permeability and better thermal stability.
语种英语
WOS记录号WOS:000412350900017
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150161
专题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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China
4.ESRF European Synchrotron, Spanish CRG Beamline BM25, SpLine, 71 Ave Martyrs, F-38000 Grenoble, France
5.CSIC, ICMM, E-28049 Canto Blanco, Spain
推荐引用方式
GB/T 7714
Jia, Haiyuan,Wu, Ping,Zeng, Gaofeng,et al. High-temperature stability of Pd alloy membranes containing Cu and Au[J]. JOURNAL OF MEMBRANE SCIENCE,2017,544:151-160.
APA Jia, Haiyuan.,Wu, Ping.,Zeng, Gaofeng.,Salas-Colerad, Eduardo.,Serranod, Aida.,...&Goldbach, Andreas.(2017).High-temperature stability of Pd alloy membranes containing Cu and Au.JOURNAL OF MEMBRANE SCIENCE,544,151-160.
MLA Jia, Haiyuan,et al."High-temperature stability of Pd alloy membranes containing Cu and Au".JOURNAL OF MEMBRANE SCIENCE 544(2017):151-160.
条目包含的文件
条目无相关文件。
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
[Jia, Haiyuan]的文章
[Wu, Ping]的文章
[Zeng, Gaofeng]的文章
百度学术
百度学术中相似的文章
[Jia, Haiyuan]的文章
[Wu, Ping]的文章
[Zeng, Gaofeng]的文章
必应学术
必应学术中相似的文章
[Jia, Haiyuan]的文章
[Wu, Ping]的文章
[Zeng, Gaofeng]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。