Two-Dimensional 29Xe Exchange NMR Measurements of Xenon Dynamics in Na-A Zeolite
Two-dimensional (2D) exchange NMR is a powerful tool for measuring the dynamics and energetics of adsorbed xenon atoms undergoing slow exchange between the alpha-cages of Na-A zeolite. In this proceedings, we present recently published results, as well as additional discussion and data obtained, using 2D Xe-129 NMR to determine rate coefficients for intercage xenon hopping and to correlate them with adsorption and activation energies. Variable-temperature experiments establish the activation energy for hopping between alpha-cages to be 60+/-10 kJ/mol. The dependence of these kinetic and thermodynamic quantities on xenon occupancy of the alpha-cages reflects the importance of intracage interactions on the behavior of the adsorbed guest molecules.
1994
0-444-81847-2
84
A-C
519
526
REVIEWED
Event name | Event place | Event date |
Garmisch-Partenkirchen, Germany | 17-22 July 1994 | |