Water dynamics in lignite coal pores

The dynamics of water molecules in the pores of lignite coal have been studied by quasielastic neutron scattering (QENS) technique. Neutron incoherent quasielastic scattering data from the confined water are analysed following the procedure described by Volino and Dianoux (Mol. Phys. 41 (1980) 271)....

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Published inPhysica. B, Condensed matter Vol. 292; no. 1; pp. 29 - 34
Main Authors Mitra, S., Mukhopadhyay, R., Chandrasekaran, K.S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.10.2000
Elsevier
Subjects
Coal
Earth sciences
Earth, ocean, space
Exact sciences and technology
Porous materials
Quasielastic neutron scattering
Sedimentary rocks
Water dynamics
Quasielastic neutron scattering
Porous materials
Water dynamics
carbonaceous rocks
sedimentary rocks
diffusion
dynamics
porosity
lignite
residence time
water
neutrons
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Summary:The dynamics of water molecules in the pores of lignite coal have been studied by quasielastic neutron scattering (QENS) technique. Neutron incoherent quasielastic scattering data from the confined water are analysed following the procedure described by Volino and Dianoux (Mol. Phys. 41 (1980) 271). We have obtained the localisation radius, the translational diffusion coefficient and the residence time for translational diffusion at room temperature. It was found that the diffusion of water was significantly influenced due to the confinement effects.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(00)00494-4