JOURNAL OF PHYSICAL CHEMISTRY, v.97, no.16, pp.4124 - 4127
Abstract
Xenon was forced into the alpha-cage of dehydrated NaA zeolite by heating to 523 K, with sufficiently high pressure of xenon (e.g., 14 atm) to increase the xenon concentration. After the sample was cooled to room temperature, the xenon was isolated as occluded in the zeolite cage. The Xe-129 NMR spectra for such occluded xenon showed remarkable changes in the line shape and the chemical shift during hydration and ion exchange of the zeolite, serving as an in-situ internal probe