| Preparation of γ-Al_2O_3 composite membrane and examination of membrane defects |
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| 引用本文： | 李安武,宏宾,谷景华,熊国兴.Preparation of γ-Al_2O_3 composite membrane and examination of membrane defects[J].中国科学B辑(英文版),1997(1). |
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| 作者姓名： | 李安武 宏宾 谷景华 熊国兴 |
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| 作者单位： | State Key Laboratroy of Catalysis，Dalian Institute of Chemical Physics，Chinese Academy of Sciences，Dalian 116023，China，State Key Laboratroy of Catalysis，Dalian Institute of Chemical Physics，Chinese Academy of Sciences，Dalian 116023，China，State Key Laboratroy of Catalysis，Dalian Institute of Chemical Physics，Chinese Academy of Sciences，Dalian 116023，China，State Key Laboratroy of Catalysis，Dalian Institute of Chemical Physics，Chinese Academy of Sciences，Dalian 116023，China |
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| 基金项目： | supported by the National Natural Science Foundation of China |
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| 摘 要： | A boehmite sol with a narrow particle size distribution and most probable diameter of 35 nm was prepared by peptization of boehmite suspension with HNO3 An unsupported γ-Al2O3 membrane made from the above sol possessed a narrow pore size distribution,with an average pore size of 4.8 nm and 320 m2/g specific surface area.A supported y-Al2O3 membrane produced by repeating dipping-drying-calcination procedure twice was proven to be defect-free by gas permeation measurements and SEM.
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