Visualization of gas flow and diffusion in porous media

TitleVisualization of gas flow and diffusion in porous media
Publication TypeJournal Article
Year of Publication2000
AuthorsKaiser L.G, Meersmann T., Logan J.W, Pines A
JournalProceedings of the National Academy of Sciences of the United States of America
Date PublishedMar 14
ISBN Number0027-8424
Accession NumberWOS:000085941400005

The transport of gases in porous materials is a crucial component of many important processes in science and technology. In the present work, we demonstrate how magnetic resonance microscopy with continuous flow laser-polarized noble gases makes it possible to "light up" and thereby visualize, with unprecedented sensitivity and resolution, the dynamics of gases in samples of silica aerogels and zeolite molecular sieve particles. The "polarization-weighted" images of gas transport in aerogel fragments are correlated to the diffusion coefficient of xenon obtained from NMR pulsed-field gradient experiments. The technique provides a unique means of studying the combined effects of flow and diffusion in systems with macroscopic dimensions and microscopic internal pore structure.

URL<Go to ISI>://WOS:000085941400005
Short TitleVisualization of gas flow and diffusion in porous media
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