Singlet-assisted diffusion-NMR (SAD-NMR): redefining the limits when measuring tortuosity in porous media
Singlet-assisted diffusion-NMR (SAD-NMR): redefining the limits when measuring tortuosity in porous media
Long-lived singlet order is exploited in diffusion NMR experiments to successfully measure the tortuosity of randomly packed spheres with diameters ranging from 500 to 1000 μm. The pore spaces in such packings have characteristic length scales well beyond the length scale limit set by spin relaxation in conventional NMR-diffusion experiments. Diffusion times of up to 240 s were used to obtain the restricted diffusion coefficient as a function of diffusion time in the long-time diffusion regime. Experimental results were validated with numerical simulations and data from x-ray micro-computed tomography.
13705-13713
Tourell, Monique
cede77f9-f053-4db0-84d0-854bdf7c2aa4
Pop, Ionut-Alexandru
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Brown, Lynda J.
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Brown, Richard C.D.
21ce697a-7c3a-480e-919f-429a3d8550f5
Pileio, Giuseppe
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28 May 2018
Tourell, Monique
cede77f9-f053-4db0-84d0-854bdf7c2aa4
Pop, Ionut-Alexandru
c6c8da9f-6d85-4794-81f5-a93b3f0644c2
Brown, Lynda J.
75aa95fa-5d27-46a7-9dbe-0f465a664f5b
Brown, Richard C.D.
21ce697a-7c3a-480e-919f-429a3d8550f5
Pileio, Giuseppe
13f78e66-0707-4438-b9c9-6dbd3eb7d4e8
Tourell, Monique, Pop, Ionut-Alexandru, Brown, Lynda J., Brown, Richard C.D. and Pileio, Giuseppe
(2018)
Singlet-assisted diffusion-NMR (SAD-NMR): redefining the limits when measuring tortuosity in porous media.
Physical Chemistry Chemical Physics, 20 (20), .
(doi:10.1039/C8CP00145F).
Abstract
Long-lived singlet order is exploited in diffusion NMR experiments to successfully measure the tortuosity of randomly packed spheres with diameters ranging from 500 to 1000 μm. The pore spaces in such packings have characteristic length scales well beyond the length scale limit set by spin relaxation in conventional NMR-diffusion experiments. Diffusion times of up to 240 s were used to obtain the restricted diffusion coefficient as a function of diffusion time in the long-time diffusion regime. Experimental results were validated with numerical simulations and data from x-ray micro-computed tomography.
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Accepted/In Press date: 6 February 2018
e-pub ahead of print date: 6 March 2018
Published date: 28 May 2018
Identifiers
Local EPrints ID: 418569
URI: http://eprints.soton.ac.uk/id/eprint/418569
ISSN: 1463-9076
PURE UUID: d38b8343-9f84-4b2d-9971-3e38fd1f2da5
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Date deposited: 12 Mar 2018 17:30
Last modified: 16 Mar 2024 06:18
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Author:
Monique Tourell
Author:
Ionut-Alexandru Pop
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