Growth mechanism of a preferentially oriented mordenite membrane

Gang Li, Rui Sen Lin, Eiichi Kikuchi, Masahiko Matsukata

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A preferentially oriented mordenite membrane was successfully prepared on a seeded porous α-alumina support. Characterization results of XRD (X-ray diffractometer) and FE-SEM (field emission scanning electron microscope) revealed that evolutionary selection might predominantly contribute to the formation of the sharply oriented mordenite membrane. The necessary conditions under which evolutionary selection occurs are: (a) the number density of nuclei on the support surface should be high enough at the early stage; (b) the crystals should grow fastest along one direction; and (c) the zeolite layer should proceed via the successive growth of the crystals nucleated on the support surface instead of the accumulation of the crystals formed in the bulk solution.

Original languageEnglish
Pages (from-to)369-372
Number of pages4
JournalJournal of Zhejiang University: Science
Volume6 B
Issue number5
DOIs
Publication statusPublished - 2005 May

Keywords

  • Evolutionary selection
  • Mordenite
  • Orientation
  • Zeolite membrane

ASJC Scopus subject areas

  • Engineering(all)

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