Synthesis of oriented MFI zeolite films by template-free secondary growth

Xiu Feng Liu, Bao Quan Zhang, Yue Sheng Lin

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The seed layer oriented in b-&h0h-axes was covered on the porous α-Al2O3 substrate using a spin coater. In the absence of organic templates, the morphology and orientation of the zeolite film over the seed layer could be regulated by changing the ratios of OH -/Si and H2O/Si, and the reaction temperature. As far as the synthesis system of 1SiO2 =4EtOH:xNaOH:yH2O is concerned, the SEM and XRD measurements revealed that the morphology and orientation of zeolite films were closely related to the values of both x and y. When x=0.56, the orientation of the zeolite film would be changed from random to b-axis by increasing y, which was accompanied by substantial morphology change. When y=270, the continuous and preferentially b-oriented MFI zeolite film of ca. 4 μm thick could be obtained.

Original languageEnglish (US)
Pages (from-to)1679-1683
Number of pages5
JournalChinese Journal of Inorganic Chemistry
Volume24
Issue number10
StatePublished - Oct 1 2008
Externally publishedYes

Keywords

  • Clear gel
  • Crystal orientation
  • Secondary growth
  • Template-free
  • Zeolite membrane

ASJC Scopus subject areas

  • Inorganic Chemistry

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