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Morphology of porous media studied by nuclear magnetic resonance

Allen, S.G., Stephenson, P.C.L., Strange, John H. (1997) Morphology of porous media studied by nuclear magnetic resonance. Journal of Chemical Physics, 106 (18). pp. 7802-7809. ISSN 0021-9606. (doi:10.1063/1.473780) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:18258)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1063/1.473780

Abstract

The filling processes of water and cyclohexane in porous silica (40 Angstrom, 60 Angstrom and 112 Angstrom pore size samples) were studied using T-2 nuclear magnetic resonance (n.m.r.) experiments. The silica pores contained water or cyclohexane and the experiments were performed at room temperature and at filling fractions ranging from 0.02 to 1.0 (that is, completely full). Two distinct processes were observed which depended on the hydrophilicity of the silica surface (or the surface adhesion of the liquid). Water was found to collect in small puddles in the silica interstices, and to form a surface layer over the silica before the remaining pore volume was filled, Water in a surface-treated porous silica and cyclohexane in regular porous silica appeared to completely fill the smaller be-Fore the larger pores, and not form a separate surface-coating layer. This work also presents the techniques used to calculate quantitative information about the filling process; specifically, determination of the volume to surface-area ratio of the liquid puddles as well as the number of these puddles, is demonstrated. (C) 1997 American Institute of Physics.

Item Type: Article
DOI/Identification number: 10.1063/1.473780
Depositing User: T. Nasir
Date Deposited: 29 Oct 2009 18:49 UTC
Last Modified: 16 Nov 2021 09:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/18258 (The current URI for this page, for reference purposes)

University of Kent Author Information

Strange, John H..

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