Frequency response study of single-file diffusion in theta-1
- 1 January 1994
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 90 (19) , 3017-3022
- https://doi.org/10.1039/ft9949003017
Abstract
Diffusion of nitrogen, carbon monoxide and carbon dioxide molecules in theta-1, a zeolite with a one-dimensional 10-ring channel network, has been investigated using the frequency response (FR) method. Surface barrier effects have been observed from the frequency response spectra in theta-1, where single-file diffusion may apply. The temperature and concentration dependences of diffusion coefficients and surface barriers have been discussed. The diffusivities and activation energies of CO and CO2 diffusion in theta-1 determined by FR method are compared with those measured by the FR and pulsed field gradient (PFG) NMR methods in silicalite-1 which has 10-ring pores which, however, are intersected.Keywords
This publication has 0 references indexed in Scilit: