A magnetic characterization of the texture of simple porous media

A magnetic way of characterizing the geometric structure of the voids in macroporous material is presented. A system of methane gas confined interstitially in a close-packed assembly of nonabsorbent zirconia beads constitutes a two-phase model (pore and matrix) of simple porous media. Nuclear magnet...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 1995-02, Vol.28 (2), p.229-238
Main Authors: Smith, M E, Stuart, S N
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Porous materials
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Summary:A magnetic way of characterizing the geometric structure of the voids in macroporous material is presented. A system of methane gas confined interstitially in a close-packed assembly of nonabsorbent zirconia beads constitutes a two-phase model (pore and matrix) of simple porous media. Nuclear magnetic resonance measurements of the proton spectral linewidth and spin echo decay are reported. They are compared with a theoretical model of the intrinsic, nonuniform, magnetic field and its gradient which are due to the heterogeneous magnetic susceptibility. (Original abstract-amended)
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/28/2/001