Abstract

The sinthesis conditions of a series of monodisperse crystals of ZSM-5 zeolite, silicalite-1, and Fe-silicalite-1 with an average particle size in the range of 30 to 450 nm have been determined. The kinetic features of the silicalite-1 crystallization at low temperatures (60−90°C) and atmospheric pressure have been studied. The effective activation energies of silicalite-1 nucliation and crystal growth have been determined to be 95 ± 7 and 100 ± 7 kJ/mol, respectively. The influence of the synthesis time and temperature as well as the silicon source concentration on the size of the MFI type nanocrystals has been studied.

Original languageEnglish
Pages (from-to)881-889
Number of pages9
JournalPetroleum Chemistry
Volume60
Issue number8
DOIs
Publication statusPublished - 1 Aug 2020

Keywords

  • crystallization
  • Fe-silicalite-1
  • nanozeolites
  • silicalite-1
  • ZSM-5
  • MECHANISM
  • PARTICLES
  • SIZE
  • TPA-SILICALITE-1
  • IN-SITU OBSERVATION
  • ZSM-5 ZEOLITES
  • CRYSTAL-GROWTH
  • KINETICS
  • NUCLEATION
  • CATALYSTS

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