Surface activation inspires high performance of ultra-thin Pd membrane for hydrogen separation

doi:10.1016/j.memsci.2016.12.025

	Surface activation inspires high performance of ultra-thin Pd membrane for hydrogen separation
	Xu, Heng Y.2; Su, Dang S.2,3,4; Zhang, Jian 5; Li, Hui 2; Zhu, Bo 1; Tang, Chun H.2
刊名	JOURNAL OF MEMBRANE SCIENCE
	2017-03-15
卷号	526 页码:138-146
关键词	H-2 Separation Pd-based Membranes Microstructure And Composition In-situ Characterizations Gas-thermal Treatment
ISSN号	0376-7388
DOI	10.1016/j.memsci.2016.12.025
文献子类	Article
英文摘要	Pd-based membranes play a critical role in the field of hydrogen purification and small-scale hydrogen generation. The microstructure and composition of ultra-thin Pd membranes immediately determines their performance and stability, which are however complex and elusive. We applied for the first time a novel technique of environmental scanning electron microscopy (ESEM) together with EDS analysis for in-situ investigation of microstructure and composition of Pd composite membranes under gas-thermal treatment. It enables step by step analysis of the evolution process and offers more meticulous details compared to ex-situ technologies through analysis at exactly the same location of membrane samples. Here we observed the elimination of Pd crystallites as well as the homogenization/diffusion along the whole membrane surface following high T treatment under inert gas or H-2 atmosphere. Gradual evolution of microhillocks on Pd membrane surface was resulted due to alpha-beta phase transition or exposure to either O-2 or H2O, which can be effectively "smoothened" out during H-2 treatment. The exposure to steam exhibited a mild oxidation effect without pinhole formations, which appears a more appropriate surface cleaning process compared to air/oxygen treatment. A significant interlayer diffusion was revealed between Pd layer and ZrO2/alumina substrate in Hz/O-2/H2O atmosphere.
WOS关键词	PALLADIUM-SILVER ALLOY ; COMPOSITE MEMBRANES ; PHASE-TRANSITION ; SINGLE-CRYSTALS ; AG MEMBRANES ; FILMS ; PERMEATION ; INTERLAYER ; STABILITY ; DEUTERIUM
WOS研究方向	Engineering ; Polymer Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000393722800014
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169620]
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
通讯作者	Su, Dang S.; Zhang, Jian; Li, Hui
作者单位	1.Jiangsu Greenest New Mat Technol Co Ltd, Yancheng 224000, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Max Planck Gesell, Fritz Haber Inst, Dept Inorgan Chem, Faradayweg 4-6, D-14195 Berlin, Germany 4.Chinese Acad Sci, Inst Met Res, Shenyang 1100016, Peoples R China 5.Chinese Acad Sci, Ningbo Inst Ind Technol, Ningbo 315201, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Xu, Heng Y.,Su, Dang S.,Zhang, Jian,et al. Surface activation inspires high performance of ultra-thin Pd membrane for hydrogen separation[J]. JOURNAL OF MEMBRANE SCIENCE,2017,526:138-146.
APA	Xu, Heng Y.,Su, Dang S.,Zhang, Jian,Li, Hui,Zhu, Bo,&Tang, Chun H..(2017).Surface activation inspires high performance of ultra-thin Pd membrane for hydrogen separation.JOURNAL OF MEMBRANE SCIENCE,526,138-146.
MLA	Xu, Heng Y.,et al."Surface activation inspires high performance of ultra-thin Pd membrane for hydrogen separation".JOURNAL OF MEMBRANE SCIENCE 526(2017):138-146.