Preparation of ZSM-5 thin film on cordierite honeycomb by solid state in situ crystallization

C. D. Madhusoodana, R. N. Das, Y. Kameshima, A. Yasumori, K. Okada

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Thin films of ZSM-5 zeolite were prepared on porous cordierite honeycombs by a solid state in situ crystallization method and were characterized by XRD, FTIR, SEM and nitrogen gas adsorption. The zeolite films were formed by coating the zeolite precursor sol on the cordierite honeycomb substrate and gelling it in the surface pores of the substrate. This gel was then converted into ZSM-5 by heating the coated substrate in an autoclave without adding solution. The amount of coating was increased by forming an interfacial layer of microporous silica on the cordierite substrate by acid leaching. The maximum specific surface area of the honeycomb coated with zeolite film was 249 m2/g. Recoating the substrate with zeolite film was effective not only in increasing the amount of zeolite film and its surface area but also in reducing the macropores in the honeycomb surface. The zeolite film was found to retain its porous properties up to the calcining temperature of 900°C. The zeolite film is considered to be formed by a vapor transport mechanism initiated by the water included in the gel.

Original languageEnglish
Pages (from-to)249-255
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume46
Issue number2-3
DOIs
Publication statusPublished - Aug 1 2001
Externally publishedYes

Keywords

  • Cordoerite
  • Honeycomb substrate
  • Solid state in situ crystallization
  • ZSM-5
  • Zeolite film

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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