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Preparation of γ-A12O3 composite membrane and examination of membrane defects

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Abstract

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 γ-A12O3 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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Authors and Affiliations

  1. State Key Laboratroy of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China

    Anwu Li, Hongbin Zhao, Jinghua Gu & Guoxing Xiong

Authors
  1. Anwu Li
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  2. Hongbin Zhao
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  3. Jinghua Gu
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  4. Guoxing Xiong
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Project supported by the National Natural Science Foundation of China.

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Li, A., Zhao, H., Gu, J. et al. Preparation of γ-A12O3 composite membrane and examination of membrane defects. Sc. China Ser. B-Chem. 40, 31–36 (1997). https://doi.org/10.1007/BF02882185

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  • DOI: https://doi.org/10.1007/BF02882185

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