Pore surface exploration by NMR

Strange, John H. and Mitchell, J. and Webber, J. Beau W. (2003) Pore surface exploration by NMR. Magnetic Resonance Imaging, 21 (3-4). pp. 221-226. ISSN 0730-725X. (Access to this publication is restricted)

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http://dx.doi.org/10.1016/S0730-725X(03)00128-0

Abstract

A carefully chosen set of experimental techniques applied to porous media characterization provides results that can be much greater than the sum of the individual parts. The inter-relation and complementarity of a number of techniques will be considered. NMR cryoporometry provides a valuable method of pore size measurement. An NMR method that is more widely used to assess pore dimensions relies on relaxation time analysis of a liquid that fills the pores and the enhanced relaxation that occurs in a liquid at the solid/liquid interface. Thermoporometry, a method based on the application of Differential Scanning Calorimetry (DSC), is closely related to cryoporometry, but employs a different set of assumptions to evaluate pore size distributions. Comparison of the results obtained on the same samples using all these methods together with gas adsorption serves to validate the methods and provide significantly more information about surface-fluid interaction and the behavior of nano-scale material within pores than each method employed in isolation. Technique developments will be discussed and applications of these methods to ideal silicas will be used to illustrate their power, particularly in combination.

Item Type: Article
Additional information: 6th International Conference on the Recent Advances in Magnetic Resonance Applications to Porous Media, ULM, GERMANY, SEP 08-12, 2002
Uncontrolled keywords: porous media; nuclear magnetic resonance; cryoporometry; relaxometry
Subjects: Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: J.B.W. Webber
Date Deposited: 14 Mar 2009 17:21
Last Modified: 30 Apr 2014 09:57
Resource URI: http://kar.kent.ac.uk/id/eprint/13458 (The current URI for this page, for reference purposes)
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