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

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• 作者：Bo Zhu^a ; Chun H. Tang^b ; Heng Y. Xu^b ; Dang S. Su^b ; ^c ; ^d ; ^{dssu@dicp.ac.cn} ; Jian Zhang^e ; ^{jzhang@nimte.ac.cn} ; Hui Li^b ; ^{hui.li@dicp.ac.cn}
• 关键词：H2 separation ; Pd-based membranes ; Microstructure and composition ; In-situ characterizations ; Gas-thermal treatment
• 刊名：Journal of Membrane Science
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：526
• 期：Complete
• 页码：138-146
• 全文大小：1616 K
• 卷排序：526

文摘

In-situ ESEM was firstly used to study super-thin Pd membranes undergoing gas/thermal treatment. Step by step analysis of evolution process and more details than ex-situ technologies. Elimination of Pd grains and diffusion along the whole surface under inert gas or H2 atmosphere. The formation of microhillocks occurred due to α–β phase transition or after exposure to O2 or H2O. Reconstruction of Pd membrane surface in H2 could remove microhillocks and pinhole formations.