Formation of novel ZSM-5/porous mullite composite from sintered kaolin honeycomb by hydrothermal reaction

Hiroaki Katsuki, Sachiko Furuta, Sridhar Komarneni

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Abstract

The formation and properties of continuous ZSM-5 film on a porous mullite honeycomb have been investigated. The porous mullite honeycomb coated with ZSM-5 film provides a novel microporous (0.5 nm in diameter)-macroporous (0.5-0.6 μm in diameter) composite. Amorphous silica-glass in the kaolin honeycomb sintered at 1650°C is used as a source for ZSM-5 formation. The honeycomb is hydrothermally treated in NaOH, tetrapropylammonium bromide, and water to prepare a novel honeycomb-zeolite composite by in situ crystallization of ZSM-5 film. This paper describes the effects of hydrothermal conditions - such as reaction temperature, time, and concentration of NaOH solution - on the formation of ZSM-5 film on the honeycomb, and on the mechanical strength and porous properties of the honeycomb composite.

Original languageEnglish (US)
Pages (from-to)1093-1097
Number of pages5
JournalJournal of the American Ceramic Society
Volume83
Issue number5
Publication statusPublished - Jan 1 2000

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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