TY - JOUR
T1 - Phase equilibrium and crystallographic structure of clathrate hydrate formed in argon+2,2-dimethylbutane+water system
AU - Murayama, Kotaro
AU - Takeya, Satoshi
AU - Ohmura, Ryo
N1 - Funding Information:
This study was supported by a Keirin-racing-based research-promotion fund from the JKA Foundation and by JSPS KAKENHI Grant Number 25289045 .
PY - 2014/3/15
Y1 - 2014/3/15
N2 - This paper reports the four-phase (Lw-H-V-Lg) equilibrium conditions for the structure H hydrates formed in argon+2,2-dimethylbutane. The experiments were performed at temperatures between 275.6 and 284.3K, and at pressures between 2.91 and 9.41MPa. The crystallographic structure of the hydrate was identified to be structure H by powder X-ray diffraction measurements. At a given temperature, the equilibrium pressure of the structure H hydrate formed with argon+2,2-dimethylbutane was lower than that of the structure II pure argon hydrate. The difference in the equilibrium pressure is 8.1-20.9MPa in the temperature range of 275.6-284.3K. Among the system using methane, argon, krypton and xenon, the system using argon shows the highest reduction ratio of equilibrium pressures.
AB - This paper reports the four-phase (Lw-H-V-Lg) equilibrium conditions for the structure H hydrates formed in argon+2,2-dimethylbutane. The experiments were performed at temperatures between 275.6 and 284.3K, and at pressures between 2.91 and 9.41MPa. The crystallographic structure of the hydrate was identified to be structure H by powder X-ray diffraction measurements. At a given temperature, the equilibrium pressure of the structure H hydrate formed with argon+2,2-dimethylbutane was lower than that of the structure II pure argon hydrate. The difference in the equilibrium pressure is 8.1-20.9MPa in the temperature range of 275.6-284.3K. Among the system using methane, argon, krypton and xenon, the system using argon shows the highest reduction ratio of equilibrium pressures.
KW - Argon
KW - Clathrate hydrates
KW - Crystallographic structure
KW - Noble gases
KW - Structure H
UR - http://www.scopus.com/inward/record.url?scp=84892667800&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84892667800&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2013.12.011
DO - 10.1016/j.fluid.2013.12.011
M3 - Article
AN - SCOPUS:84892667800
SN - 0378-3812
VL - 365
SP - 64
EP - 67
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
ER -