129Xe NMR Linewidths as Indicators of Spatial Inhomogeneities in Zeolites
- 1 November 1996
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 50 (11) , 1389-1394
- https://doi.org/10.1366/0003702963904818
Abstract
The widths of the 129Xe nuclear magnetic resonance (NMR) lines of xenon in zinc- and cadmium-exchanged zeolites NaY and HY were measured at ambient temperature as a function of the xenon gas equilibrium pressure. It is demonstrated that the observed values of the linewidths as well as their quite different dependence on pressure can be explained on the basis of a theoretical approach which traces back the origin of line broadening to inhomogeneous spatial distributions of transition metal cation sites interacting strongly with the encaged xenon atoms.Keywords
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