| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 74641 | Microporous and Mesoporous Materials | 2011 | 9 Pages |
Pulsed field gradient NMR has been applied to investigate water diffusion in Na+-form zeolites beta and LTA if, in addition to the micropores, the intracrystalline space is traversed by a network of mesopores. In zeolite beta, the presence of the mesopores is found to enhance the rate of molecular diffusion by a factor of 3. The measurements with mesoporous zeolite LTA yield diffusivities which reproduce the order of magnitude of the diffusivities found in previous studies with genuine microporous specimens.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► In this study we report on pulsed field gradient NMR diffusion study of water in mesoporous beta and LTA zeolites. ► In zeolite beta, the rate of molecular diffusion is enhanced due to the presence of the mesopores. ► In mesoporous zeolite LTA, the diffusivities reproduce the order of magnitude of the diffusivities found in previous studies with genuine microporous specimens.
