XE-129 NMR-STUDY OF THE BED RESISTANCE TO MOLECULAR-TRANSPORT IN ASSEMBLAGES OF ZEOLITE CRYSTALLITES

Authors
SPRINGUELHUET MA NOSOV A KARGER J FRAISSARD J
Citation
Ma. Springuelhuet et al., XE-129 NMR-STUDY OF THE BED RESISTANCE TO MOLECULAR-TRANSPORT IN ASSEMBLAGES OF ZEOLITE CRYSTALLITES, Journal of physical chemistry, 100(17), 1996, pp. 7200-7203
Citations number
25
Categorie Soggetti
Chemistry Physical
Journal title
Journal of physical chemistry → ACNP
ISSN journal
00223654
Volume
100
Issue
17
Year of publication
1996
Pages
7200 - 7203
Database
ISI
SICI code
0022-3654(1996)100:17<7200:XNOTBR>2.0.ZU;2-U
Abstract
The NMR spectroscopy of xenon sorbed in beds of ZSM-5 zeolite is used to study the rate of adsorption of benzene molecules from the gas phas e, as well as the rate of the combined process of adsorption and desor ption in a bed consisting of two types of crystallites, some being ini tially benzene-loaded, some not. The exchange rate is shown to depend dramatically on the crystallite arrangement. The magnitudes of the obs erved rate constants and line shifts are confirmed by calculations bas ed on simple models.