Capillary hydrodynamic fractionation studies on the crystal growth of TS-1 zeolite

K. T. Jung, Y. G. Shul

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Capillary hydrodynamic fractionation (CHDF) was used, for the first time, to gain information about the particle growth mechanism of TS-1 zeolite. The particle size and the particle size distribution (PSD) of the mother solution were directly and easily monitored by CHDF during crystallization. The effects of the reaction temperature, and the ratios of H2O/Si and TPAOH/Si on the particle growth were studied. During crystallization of zeolite particles, bimodal PSD and an abrupt increase in the number average particle size (30 to 60-80 nm) were observed. It is suggested that zeolite particles of 60-80 nm formed by the aggregation of several particles of 30 nm (i.e. particle intergrowth mechanism). The apparent activation energy for particle intergrowth was 30 kJ/mol. The maximum intergrowth time decreased with increasing reaction temperature, whereas it increased with increasing H2O/Si ratio. The proposed particle growth mechanism was also compared with SEM and TEM results.

Original languageEnglish
Pages (from-to)246-254
Number of pages9
JournalJournal of Non-Crystalline Solids
Volume316
Issue number2-3
DOIs
Publication statusPublished - 2003 Feb

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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