ASPECTS OF THE CHARACTERIZATION OF CLOVERITE BY SOLID-STATE NMR TECHNIQUES.
607 - 610.
Microporous gallophosphate cloverite has been studied by multinuclear (C-13, F-19, P-31, Ga-71) solid-state n.m.r. spectroscopy. An extraordinarily strong quadrupolar coupling is shown to be the reason for a misleading line shape in Ga-71 MAS n.m.r. spectra. Using static Ga-71 n.m.r. spectroscopy, an estimate of the size of this quadrupolar coupling can be obtained. The limitations of the MAS technique for the study of quadrupolar nuclei in sites with very large quadrupolar couplings are addressed.
|Title:||ASPECTS OF THE CHARACTERIZATION OF CLOVERITE BY SOLID-STATE NMR TECHNIQUES|
|Keywords:||GALLOPHOSPHATE, CLOVERITE, QUADRUPOLAR COUPLING, MULTINUCLEAR MAS NMR SPECTROSCOPY, STATIC GA-71 NMR SPECTROSCOPY, LIMITATIONS OF MAS NMR SPECTROSCOPY, GALLOPHOSPHATE MOLECULAR-SIEVE|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry
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