Percolation diffusion of guest molecules in NaCaA zeolites: field gradientNMR studies and Monte Carlo simulations

Authors
Vasenkov, S Karger, J Freude, D Rakoczy, RA Weitkamp, J
Citation
S. Vasenkov et al., Percolation diffusion of guest molecules in NaCaA zeolites: field gradientNMR studies and Monte Carlo simulations, J MOL CAT A, 158(1), 2000, pp. 373-376
Citations number
7
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
ISSN journal
13811169 → ACNP
Volume
158
Issue
1
Year of publication
2000
Pages
373 - 376
Database
ISI
SICI code
1381-1169(20000908)158:1<373:PDOGMI>2.0.ZU;2-8
Abstract
Percolation diffusion of guest molecules in NaCaA zeolite is simulated by t he Monte Carlo method and monitored by the pulsed field gradient (PFG) nucl ear magnetic resonance (NMR) technique. The simulations are performed to ev aluate possible manifestations of anomalous percolation diffusion in NaCaA zeolite observable by PFG NMR. The observation of normal diffusion of ethan e in NaCaA by PFG NMR was found to be in agreement with the results of Mont e Carlo simulations. The conditions of the observation of anomalous percola tion diffusion by PFG NMR are discussed. (C) 2000 Elsevier Science B.V. All rights reserved.