Brace, SL, Wormald, P and Darton, RJ (2015) The Effect of Structure Directing Agents on the Ordering of Fluoride Ions in Pure Silica MFI Zeolites. Physical Chemistry Chemical Physics, 17 (18). pp. 11950-11953.

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Abstract

The effect of different sizes of structure directing agents on the ordering of the fluoride ions in pure silica MFI zeolites has been determined using magic angle spinning solid state NMR. By synthesizing fluoride containing pure silica MFI zeolites using methyltributylammonium cations as the structure directing agent, it has been possible to change the type of ordering seen for the fluoride ions at room temperature from the previously reported dynamic to static disorder. An initial mechanism for how this fluoride ordering occurs is suggested based upon the coulombic interaction between the positive charge on the nitrogen and the negative fluoride ion, within the zeolite framework, with different sizes of tetraalkylammonium cations.

Item Type: Article
Additional Information: Accepted 8 April 2015 (12 month publisher embargo on release)
Uncontrolled Keywords: flouride ions, pure silica MFI zeolites
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Depositing User: Symplectic
Date Deposited: 15 Apr 2015 10:58
Last Modified: 02 May 2019 11:03
URI: http://eprints.keele.ac.uk/id/eprint/404

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