Percolation diffusion of guest molecules in NaCaA zeolite was simulated by the Monte Carlo method and monitored using pulsed field gradient nuclear magnetic resonance. The simulations were performed in order to evaluate possible manifestations of anomalous percolation diffusion in NaCaA zeolite. The observation of normal diffusion of ethane in NaCaA by pulsed field gradient nuclear magnetic resonance was found to be in agreement with the results of Monte Carlo simulations.

Percolation Diffusion of Guest Molecules in NaCaA Zeolites: Field Gradient NMR Studies and Monte Carlo Simulations. S.Vasenkov, J.Kärger, D.Freude, R.A.Rakoczy, J.Weitkamp: Journal of Molecular Catalysis A, 2000, 158[1], 373-6