Journal
FLUID PHASE EQUILIBRIA
Volume 413, Issue -, Pages 170-175Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fluid.2015.10.006
Keywords
Interfacial tension; Surface tension; Methane; Water; Clathrate hydrate
Funding
- Keio University Global Center of Excellence Program Center for Education and Research of Symbiotic, Safe and Secure System Design
- JKA Foundation
- JSPS KAKENHI Grant [25289045]
- JSPS through the Program Grant-in-Aid for JSPS Fellows of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) [22-3623]
- Grants-in-Aid for Scientific Research [25289045] Funding Source: KAKEN
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This paper reports the measurements of the interfacial tension in a water methane system at temperatures from 278.15 K to 298.15 K and pressures up to 10 MPa. The measurements using the pendant drop method were performed at various pressures lower than or, at the highest, nearly equal to the hydrate/liquid/gas equilibrium pressure corresponding to each of the following prescribed temperatures: 278.15 K, 283.15 K, 288.15 K, 293.15 K and 298.15 K. The obtained data show that at each temperature the interfacial tension decreases almost linearly with the increasing pressure, indicating that the observed decrease in the interfacial tension results from the promotion of methane adsorption onto the interface with the increasing pressure. (C) 2015 Elsevier B.V. All rights reserved.
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