Dispersion forces stabilize ice coatings at certain gas hydrate interfaces that prevent water wetting

M. Boström; R.W. Corkery; E.R.A. Lima; O.I. Malyi; S.Y. Buhmann; C. Persson; I. Brevik; D.F. Parsons; J. Fiedler

doi:10.1021/acsearthspacechem.9b00019

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Dispersion forces stabilize ice coatings at certain gas hydrate interfaces that prevent water wetting

Journal article

Peer reviewed

Dispersion forces stabilize ice coatings at certain gas hydrate interfaces that prevent water wetting

M. Boström, R.W. Corkery, E.R.A. Lima, O.I. Malyi, S.Y. Buhmann, C. Persson, I. Brevik, D.F. Parsons and J. Fiedler

ACS Earth and Space Chemistry, Vol.3, pp.1014-1022

2019

DOI: https://doi.org/10.1021/acsearthspacechem.9b00019

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Abstract

Gas hydrates formed in oceans and permafrost occur in vast quantities on Earth representing both a massive potential fuel source and a large threat in climate forecasts. They have been predicted to be important on other bodies in our solar systems such as Enceladus, a moon of Saturn. CO2-hydrates likely drive the massive gas-rich water plumes seen and sampled by the spacecraft Cassini, and the source of these hydrates is thought to be due to buoyant gas hydrate particles. Dispersion forces can in some cases cause gas hydrates at thermal equilibrium to be coated in a 3–4 nm thick film of ice, or to contact water directly, depending on which gas they contain. As an example, the results are valid at a quadruple point of the water–CO2 gas hydrate system, where a film is formed not only for the model with pure ice but also in the presence of impurities in water or in the ice layer. These films are shown to significantly alter the properties of the gas hydrate clusters, for example, whether they float or sink. It is also expected to influence gas hydrate growth and gas leakage.

Details

Title: Dispersion forces stabilize ice coatings at certain gas hydrate interfaces that prevent water wetting
Authors/Creators: M. Boström (Author/Creator) - University of Oslo
R.W. Corkery (Author/Creator) - KTH Royal Institute of Technology
E.R.A. Lima (Author/Creator) - Universidade do Estado do Rio de Janeiro
O.I. Malyi (Author/Creator) - University of Oslo
S.Y. Buhmann (Author/Creator) - University of Freiburg
C. Persson (Author/Creator) - University of Oslo
I. Brevik (Author/Creator) - Norwegian University of Science and Technology
D.F. Parsons (Author/Creator) - Murdoch University
J. Fiedler (Author/Creator) - University of Oslo
Publication Details: ACS Earth and Space Chemistry, Vol.3, pp.1014-1022
Publisher: ACS Publications
Identifiers: 991005545285007891
Copyright: © 2019 American Chemical Society
Murdoch Affiliation: School of Engineering and Information Technology
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 8 Earth Sciences; 8.312 Gas Hydrates; 8.312.1202 Gas Hydrate
Web Of Science research areas: Chemistry, Multidisciplinary; Geochemistry & Geophysics
ESI research areas: Chemistry