TY - JOUR
T1 - Interfacial tension measurements in water-methane system at temperatures from 278.15 K to 298.15 K and pressures up to 10 MPa
AU - Yasuda, Keita
AU - Mori, Yasuhiko H.
AU - Ohmura, Ryo
N1 - Funding Information:
This study was supported by the Keio University Global Center of Excellence Program “Center for Education and Research of Symbiotic, Safe and Secure System Design”, by a Keirin-racing-based research promotion fund from the JKA Foundation , and by JSPS KAKENHI Grant Number 25289045 . K.Y. is grateful for the support provided by JSPS through the Program “Grant-in-Aid for JSPS Fellows of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT)” (Grant No. 22-3623 ).
Publisher Copyright:
© 2015 Elsevier B.V...
PY - 2016/4/15
Y1 - 2016/4/15
N2 - 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.
AB - 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.
KW - Clathrate hydrate
KW - Interfacial tension
KW - Methane
KW - Surface tension
KW - Water
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U2 - 10.1016/j.fluid.2015.10.006
DO - 10.1016/j.fluid.2015.10.006
M3 - Article
AN - SCOPUS:84957928377
VL - 413
SP - 170
EP - 175
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
SN - 0378-3812
ER -