Porous ceramic membranes: preparation, transport properties and applications

S. Vercauteren, Klaas Keizer, E.F. Vansant, J. Luyten, R. Leysen

Research output: Contribution to journalArticleAcademicpeer-review

69 Citations (Scopus)

Abstract

The preparation and characterization of porous ceramic membranes is presented. These membranes consist of a macroporous support system, with or without a mesoporous intermediate layer, and a microporous top layer. For the macroporous support membranes two manufacturing routes are described: a conventional and a RBAO (Reaction Bonded Aluminium Oxide) route. The mesoporous γ-Al2O3 layer is obtained by means of a sol-gel dipcoating technique. Three microporous top layers are considered: SiO2, Al2O3-pillared montmorillonite and Laponite. These top layers have different pore structures which results in different gas transport properties. A SiO2 membrane can be used for H2 removal from a gas mixture. Al2O3-pillared montmorillonite and Laponite membranes do not show specific gas separation properties. Dehydration of water/2-propanol mixtures by means of pervaporation also proved a different behavior for these microporous membranes.
Original languageEnglish
Pages (from-to)241-248
Number of pages8
JournalJournal of porous materials
Volume5
DOIs
Publication statusPublished - 2000
Externally publishedYes

Keywords

  • Porous membranes
  • SiO2
  • Al2O3-pillared montmorillonite
  • Laponite
  • Gas separation
  • Pervaporation

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