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Updated: Aug 11, 2026

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
Published on: September 2, 2016
Concentration-dependent diffusivity and anomalous diffusion: a magnetic resonance imaging study of water ingress in
Eduardo N de Azevedo1, Paulo L de Sousa, Ricardo E de Souza
1Departamento de Física, Universidade Federal de Pernambuco, Cidade Universitária, 50.670-901 Recife, Pernambuco, Brazil.
Abstract:
Magnetic resonance imaging is employed to study water ingress in fine zeolite powders compacted by high pressure. The experimental conditions are chosen such that the applicability of Boltzmann's transformation of the one-dimensional diffusion equation is approximately satisfied. The measured moisture profiles indicate subdiffusive behavior with a spatiotemporal scaling variable eta=x/t(gamma/2) (0
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