The preparation and characterization of alumina membranes with ultra-fine pores: Part 1. Microstructural investigations on non-supported membranes

A.F.M. Leenaars, K. Keizer, A.J. Burggraaf

Research output: Contribution to journalArticleAcademicpeer-review

271 Citations (Scopus)

Abstract

Alumina films less than 20 μm thick are prepared by a process in which a boehmite sol is successively gelled, dried and calcined. The resulting structure has the unique property that only ultra-fine pores with a narrow pore size distribution are present within large crack-free layers. The microstructure can be influenced by the sintering temperature and the acid concentration of the precursor sol. The minimum modal pore size which has been obtained is 2.5 nm. A consistent model of the microstructure of the membranes and an explanation of its uniformity are presented.

Original languageEnglish
Pages (from-to)1077-1088
Number of pages12
JournalJournal of materials science
Volume19
Issue number4
DOIs
Publication statusPublished - 1 Apr 1984

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Aluminum Oxide
Polymethyl Methacrylate
Sols
Pore size
Alumina
Membranes
Microstructure
Sintering
Cracks
Acids
Temperature
aluminum oxide hydroxide

Keywords

  • Polymer
  • Alumina
  • Microstructure
  • Pore size
  • Acid concentration

Cite this

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The preparation and characterization of alumina membranes with ultra-fine pores : Part 1. Microstructural investigations on non-supported membranes. / Leenaars, A.F.M.; Keizer, K.; Burggraaf, A.J.

In: Journal of materials science, Vol. 19, No. 4, 01.04.1984, p. 1077-1088.

Research output: Contribution to journalArticleAcademicpeer-review

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