Synthesis of a zeolitic thin layer by a vapor-phase transport method

Appearance of a preferential orientation of MFI zeolite

Eiichi Kikuchi, Kazuhiko Yamashita, Sachioko Hiromoto, Korekazu Ueyama, Masahiko Matsukata

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Zeolitic membranes were synthesized on a porous alumina support by the vapor-phase transport method using one of two alumina sources: aluminum sulfate and sodium aluminate. By choosing the appropriate period and temperature for drying the aluminosilicate gel on the alumina support, MOR, FER and MFI could be synthesized. MOR was formed when the water content in the dry gel was high. As the water content decreased, FER and MFI were formed sequentially. Preferential formation of MFI was achieved by treating the dry gel at 373 K. The temperature at which the support was dipped in the parent gel also influenced the type of zeolite formed, although the effect of drying conditions was more pronounced. A similar trend was found for both aluminum sulfate and sodium aluminate. When the alumina source was sodium aluminate and the aluminosilicate gel was treated at 373 K, a preferentially oriented MFI membrane could be synthesized, as the (a00) and (0b0) crystal faces were oriented in parallel to the surface of porous alumina support. The uniform and dense morphology of the dry gel seems to account for the appearance of the orientation.

Original languageEnglish
Pages (from-to)107-116
Number of pages10
JournalMicroporous Materials
Volume11
Issue number3-4
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

Zeolites
Aluminum Oxide
Gels
Vapors
gels
vapor phases
Alumina
aluminum oxides
synthesis
Aluminosilicates
Sodium
sodium
Water content
drying
moisture content
sulfates
Drying
membranes
Membranes
aluminum

Keywords

  • Preferentially oriented membrane
  • Synthesis
  • Vapor-phase transport
  • Zeolitic membrane

ASJC Scopus subject areas

  • Chemistry(all)
  • Engineering(all)
  • Materials Science(all)

Cite this

Synthesis of a zeolitic thin layer by a vapor-phase transport method : Appearance of a preferential orientation of MFI zeolite. / Kikuchi, Eiichi; Yamashita, Kazuhiko; Hiromoto, Sachioko; Ueyama, Korekazu; Matsukata, Masahiko.

In: Microporous Materials, Vol. 11, No. 3-4, 1997, p. 107-116.

Research output: Contribution to journalArticle

Kikuchi, Eiichi ; Yamashita, Kazuhiko ; Hiromoto, Sachioko ; Ueyama, Korekazu ; Matsukata, Masahiko. / Synthesis of a zeolitic thin layer by a vapor-phase transport method : Appearance of a preferential orientation of MFI zeolite. In: Microporous Materials. 1997 ; Vol. 11, No. 3-4. pp. 107-116.
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