INVESTIGATION OF THE FACTORS AFFECTING THE 29Si MAS NMR LINEWIDTHS OF ZEOLITES
- 5 October 1983
- journal article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 12 (10) , 1547-1550
- https://doi.org/10.1246/cl.1983.1547
Abstract
The study of 29Si MAS NMR spectra of zeolites of both low and high Si/Al ratios has provided insight on the factors affecting the residual 29Si line-widths of these materials. It is found that the residual linebroadening in low Si/Al ratio zeolites is due to the distribution of local environments of a particular Si(nAl) type, resulting from the distribution of aluminium atoms in second and further coordination spheres. This is complicated in some cases by a distribution of chemical shifts resulting from crystallographic inequivalence, each of which is subject to the above environmental broadening factors.This publication has 3 references indexed in Scilit:
- Resolving crystallographically distinct tetrahedral sites in silicalite and ZSM-5 by solid-state NMRNature, 1982
- Applications of magic-angle-spinning silicon-29 nuclear magnetic resonance. Evidence for two different kinds of silicon-aluminum ordering in zeolitic structuresThe Journal of Physical Chemistry, 1981
- Investigation of the structure of zeolites by solid-state high-resolution silicon-29 NMR spectroscopyJournal of the American Chemical Society, 1981