The Characterization of Porous Solids by NMR

Alnaimi, S.M and Strange, John H. and Smith, E.G (1994) The Characterization of Porous Solids by NMR. Magnetic Resonance Imaging, 12 (2). pp. 257-259. ISSN 0730-725X. (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)

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We are using a novel NMR method, that has been developed in our laboratory and employs the depression of the freezing point (Delta T-m) of confined liquid within porous media, to investigate the effect of pre-drying silica with average pore diameter ranging from 60 Angstrom to 1000 Angstrom. Cyclohexane was the confined liquid. Pre-drying was found to affect only the smallest pores. A study to compare partially filled and over-filled samples showed that the average Delta T-m for partially filled samples is greater than for over-filled. We have also investigated the use of water as the absorbed liquid and compared results with those obtained from cyclohexane studies. Reasonable agreement was found but cyclohexane was more sensitive, The method is fast and is suitable for monitoring pore size distributions in the range of 50-1000 Angstrom.

Item Type: Article
Additional information: Document Type: Note
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK9001 Nuclear engineering
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: P. Ogbuji
Date Deposited: 27 Aug 2009 18:12
Last Modified: 30 Apr 2014 09:55
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