Preparation of γ-alumina thin membrane by sol-gel processing and its characterization by gas permeation

T. Okubo, Midori Watanabe, K. Kusakabe, S. Morooka

Research output: Contribution to journalArticle

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Abstract

γ-alumina porous membranes without pinholes or cracks were prepared by the sol-gel process. The boehmite sol obtained from hydrolysation of aluminium isopropoxide was applied to the inner surface of a porous supporting tube by a dipping procedure. The effects of sol concentration and the repetition number of dipping-drying-firing procedure on the membrane performance were investigated by scanning electron microscopy, X-ray diffraction and the Brunauer-Emmett-Teller method in connection with the micro-structure of the membrane. Gas permeation measurements were also conducted. The gas permeation through the thin membranes is well explained by Knudsen's flow, indicating the pores are controlled finely and homogeneously.

Original languageEnglish
Pages (from-to)4822-4827
Number of pages6
JournalJournal of Materials Science
Volume25
Issue number11
DOIs
Publication statusPublished - Nov 1 1990

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Aluminum Oxide
Permeation
Sol-gels
Alumina
Gases
Membranes
Polymethyl Methacrylate
Sols
Processing
Aluminum
Sol-gel process
Drying
Cracks
X ray diffraction
Microstructure
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Preparation of γ-alumina thin membrane by sol-gel processing and its characterization by gas permeation. / Okubo, T.; Watanabe, Midori; Kusakabe, K.; Morooka, S.

In: Journal of Materials Science, Vol. 25, No. 11, 01.11.1990, p. 4822-4827.

Research output: Contribution to journalArticle

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