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无机材料学报

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Pd/γ-Al2O3复合膜的制备工艺研究

王浚; 高濂; 黄磊+; 彭定坤+   

  1. 上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室; 上海 200050; +中国科技大学材料科学与工程系 合肥 230026
  • 收稿日期:1998-05-25 修回日期:1998-06-10 出版日期:1999-06-20 网络出版日期:1999-06-20

Process for Preparing Pd/γ-Al2O3 Composite Membrane

WANG Jun; MAO Lian ; HUANG Lei+; PENG Ding-Kun +   

  1. State Key Lab on High Performance Ceramics Superfine Microstructure; Shanghai Institute ofCeramics Shanghai 200050 China+Department of Materials Science Engincering; University of Science Technology of China Hefei 230026 China
  • Received:1998-05-25 Revised:1998-06-10 Published:1999-06-20 Online:1999-06-20

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摘要： 本文研究了采用Sol－Gel法制备用于H2分离的Pd／γ-Al2O3复合膜的工艺过程，将含Pd2+的源物质直接加入到稳定、pH适宜的勃姆石（γ－AlOOH）溶液中，用直接浸取的方法在多孔α－Al2O3衬底上成膜．BET测试表明，复合膜的平均孔径为25～4、0nm．分析了Pd的含量和工艺参数对复合膜的形貌和结构的影响，并对膜材料进行了SEM、XRD和N2透气性能研究．

关键词: Sol－Gel, 钯, 氧化铝, 复合膜

Abstract: The preparation process of Pd/γ-Al2O3 composite membrane for selective hydrogen separation was studied, direct impregnation of pd was achieved by mixing the boehmite sol(γ-AlOOH) with a Pd precursor, followed by ultrasonic dispersing Pd particles uniformly throughout the membrane.The average pore diameter measured by BET was 2.5~4.0nm, SEM, XRD and separation tests were conducted in order to evaluate the properties of the composite membrane.

Key words: sol-gel, palladium, alumina, composite membrane

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