Cited by 219Zeolite Catalysis and SynthesisChemical Synthesis and CharacterizationClay minerals and soil interactions

Conversion of faujasites to high-silica chabazite SSZ-13 in the presence of N,N,N-trimethyl-1-adamantammonium iodide

Zones, S. I.·1991·Journal of the Chemical Society, Faraday Transactions

Abstract

The hydrothermal synthetic conversion of aluminium-rich zeolites to organo-zeolites in the presence of N,N,N-trimethyl-1-adamantammonium cations is now extended to the faujasite system. Rates of conversion are seen to be dramatically affected by various treatments of the FAU (faujasite) zeolites. Rates are depressed by steaming FAU zeolites, by ion-exchanging them with unreactive organic cations, or by silylating the surface of the zeolite. Surprisingly, the inhibition is removed by calcining away the organosilyl groups. For a reactive FAU zeolite (Y-62), the extent of conversion was proportional to organo-cation content, with other variables fixed; rates of conversion were also related to hydroxide ion concentration at the start of reaction.

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Crossref · 10.1039/ft9918703709

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  • Zeolite interconversion takes place in gels where the silica source is replaced by a parent zeolite which shares common building units with the target zeolite, e.g., transformation of faujasite into chabazite.

    “Zeolite interconversion takes place in gels, where the silica source is replaced by a parent zeolite which shares common building units with the target zeolite, an example of which is the transformation of faujasite into chabazite.121−123”

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Authors
Zones, S. I.
Corresponding author
Zones, S. I.
Venue
Journal of the Chemical Society, Faraday Transactions
Published
1991
Volume
87
Issue
22
Pages
3709
ISSN
  • 0956-5000 (ISSN-L)
  • 1364-5455
OpenAlex
W2098720526
Cited by
219
References
8
Citations by year
2026: 4 · 2025: 6 · 2024: 9 · 2023: 11 · 2022: 13 · 2021: 28 · 2020: 16 · 2019: 14 · 2018: 21 · 2017: 17 · 2016: 6 · 2015: 14 · 2014: 15 · 2013: 9 · 2012: 7
FWCI
0.83
Type
journal article
Language
en
Open access
closed
Locations
Journal of the Chemical Society Faraday Transactions (publishedVersion)
Topics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Chemical Synthesis and Characterization
  • Physical Sciences › Materials Science › Biomaterials › Clay minerals and soil interactions
Keywords
faujasite, SSZ-13, chabazite, zeolite conversion, hydrothermal synthesis, ion exchange, silylation, calcination, hydroxide ion concentration

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