Mesoporous carbon confined conversion of silica nanoparticles into zeolite nanocrystals

Yi Huang, Jenny Ho, Zheng Wang, Philip Nakashima, Anita J. Hill, Huanting Wang

Research output: Contribution to journalArticlepeer-review

Abstract

A novel synthesis method has been developed to synthesize zeolite nanocrystals with controllable size and size distribution through conversion of colloidal silica nanoparticles in a mesoporous carbon matrix. Colloidal silica nanoparticles serving as the silica source as well as the hard template were embedded in the mesoporous carbon via in situ polymerization of furfuryl alcohol in the presence of tri-block copolymer (Pluronic P123), and then reacted with an alkaline aqueous solution (Na(2)O-Al(2)O(3)-H(2)O) infiltrated through the mesoporous channels of the carbon matrix. The synthesis of zeolite NaA nanocrystals is demonstrated. SEM images reveal that the sizes of the zeolite NaA nanocrystals obtained are similar to those of the starting silica nanoparticles. As a result, this synthesis method shows the potential for controlling the nanocrystal size and size distribution of silica-containing zeolites by choosing colloidal silica nanoparticles with a desired particle size distribution. (c) 2008 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)490-496
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume117
Issue number1-2
DOIs
Publication statusPublished - 1 Jan 2009
Externally publishedYes

Keywords

  • Zeolite nanocrystals
  • Zeolite synthesis
  • Mesoporous carbon
  • Colloidal silica
  • IN-SITU
  • DIRECT TRANSFORMATION
  • POLYMER HYDROGELS
  • SECONDARY GROWTH
  • TEMPLATE
  • CRYSTALLIZATION
  • MEMBRANES
  • SURFACE
  • FILMS
  • NANOZEOLITES

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