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Materials 2012, 5(4), 699-720; doi:10.3390/ma5040699
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Exploring Mass Transfer in Mesoporous Zeolites by NMR Diffusometry

1
,
1,* , 1
,
2
 and
2,*
1 Faculty of Physics and Earth Science, University of Leipzig, Linnèstr. 5, Leipzig D-04103, Germany 2 Department of Chemistry and Graduate School of Nanoscience and Technology (WCU), KAIST, Daejeon 305-701, Korea
* Authors to whom correspondence should be addressed.
Received: 21 February 2012 / Revised: 2 April 2012 / Accepted: 15 April 2012 / Published: 20 April 2012
(This article belongs to the Special Issue Diffusion in Micropores)
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Abstract

With the advent of mesoporous zeolites, the exploration of their transport properties has become a task of primary importance for the auspicious application of such materials in separation technology and heterogeneous catalysis. After reviewing the potential of the pulsed field gradient method of NMR (PFG NMR) for this purpose in general, in a case study using a specially prepared mesoporous zeolite NaCaA as a host system and propane as a guest molecule, examples of the attainable information are provided.
Keywords: mesoporous zeolites; diffusion; surface barriers; NaCaA; propane; NMR mesoporous zeolites; diffusion; surface barriers; NaCaA; propane; NMR
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Mehlhorn, D.; Valiullin, R.; Kärger, J.; Cho, K.; Ryoo, R. Exploring Mass Transfer in Mesoporous Zeolites by NMR Diffusometry. Materials 2012, 5, 699-720.

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