Dynamics of water diffusion in mesoporous zeolites
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. (C) 2010 Elsevier Inc. All rights reserved.
- Publisher
- ELSEVIER SCIENCE BV
- Issue Date
- 2011-06
- Language
- English
- Article Type
- Article
- Keywords
CONTROLLED DESILICATION; MICROPOROUS FRAMEWORKS; HIERARCHICAL ZEOLITES; CATALYTIC-PROPERTIES; MOLECULAR-TRANSPORT; DIRECTED SYNTHESIS; TRACER DESORPTION; ZSM-5 ZEOLITE; POROUS-MEDIA; NMR
- Citation
MICROPOROUS AND MESOPOROUS MATERIALS, v.142, no.1, pp.236 - 244
- ISSN
- 1387-1811
- Appears in Collection
- CBE-Journal Papers(저널논문)CH-Journal Papers(저널논문)
- Files in This Item
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