Direct synthesis of zeolite Y with large particle size

Samia Ferchiche, Juliusz Warzywoda, Albert Sacco

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

Large zeolite Y particles have been synthesized directly from gels (4.76Na2O: 1.OA12O3: xSiO2: 454H2O: 5TEA, x=5.25-8.75) aged at ∼293 K before static heating at 368 K. Product purity, size, and Si/A1 ratio of zeolite Y depended on the gel composition and aging time. Two-day aging of gels (x=5.25 and 7.0) resulted in nearly pure zeolite Y (<5-10 wt.% zeolite P1) with Si/A1= 1.7 and 1.9, and maximum size of 95 and 120 μm, respectively. Sieving of products grown from gels with x=8.75 aged for 7 days resulted in nearly pure zeolite Y in the ∼50-125 μm particle size range. The Si/A1 ratio of all zeolite Y grown from gels with x=8.75 did not change with aging time (2-20 days) and was 2.1.

Original languageEnglish
Pages (from-to)773-780
Number of pages8
JournalInternational Journal of Inorganic Materials
Volume3
Issue number7
DOIs
StatePublished - Jan 1 2001

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Keywords

  • A. inorganic materials
  • A. microporous materials
  • A. zeolites
  • B. chemical synthesis
  • B. crystal growth
  • B. hydrothermal synthesis

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