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The location of fluoride and organic guests in 'as-made' pure silica zeolites FER and CHA

Research output: Contribution to journalArticlepeer-review

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Author(s)

Luis A Villaescusa, Ivor Bull, Paul S Wheatley, Philip Lightfoot, Russell Edward Morris

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Abstract

The structure determination of as-made silica zeolites CHA and FER prepared in the presence of fluoride ions has been accomplished using microcrystal X-ray diffraction at a synchrotron source. In both cases, the location of the fluoride ions has been determined. Fluoride ions are incorporated into small double six-ring cages in the CHA framework, and the organic guests have been located in the larger chabazite cages. In contrast to two previous single-crystal X-ray diffraction studies of as-made siliceous FER prepared in related ways fluoride ions are incorporated into the framework and are found occluded inside small cages in the structure.

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Details

Original languageEnglish
Pages (from-to)1978-1982
Number of pages5
JournalJournal of Materials Chemistry
Volume13
DOIs
Publication statusPublished - 2003

    Research areas

  • X-RAY-DIFFRACTION, SOLID-STATE NMR, SI-29 MAS-NMR, 5-COORDINATE SILICON, MOLECULAR-SIEVES, BETA-ZEOLITE, FERRIERITE, FRAMEWORK, TEMPLATE, IONS

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