Synthesis and textural properties of unsupported and supported rutile (TiO2) membranes

Krishnankutty-Nair P. Kumar, Klaas Keizer, Anthonie J. Burggraaf, Tatsuya Okubo, Hidetoshi Nagamoto

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Two approaches were postulated for improving the stability of porous texture of titania membranes: (1) retarding the phase transformation and grain growth; (2) avoiding the phase transformation. Based on the second approach, rutile membranes were made directly from a rutile sol, prepared by the precipitation of titania on SnO2 nuclei. The rutile membranes were stable up to 800 °C, with a porosity of ca. 40%, whereas normal titania membranes (starting with anatase) show very little porosity above 600 °C. Alumina substitution retards grain growth and pore growth at 850 °C for unsupported as well as supported membranes.
Original languageEnglish
Pages (from-to)923-929
JournalJournal of materials chemistry
Issue number9
Publication statusPublished - May 1993


  • Ceramic
  • Membrane
  • Rutile
  • Titania
  • Tin oxide


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