TY - JOUR
T1 - Phase equilibrium for structure-H hydrates at temperatures below the freezing point of water
AU - Ohmura, Ryo
AU - Matsuda, Sadatoshi
AU - Uchida, Tsutomu
AU - Ebinuma, Takao
AU - Narita, Hideo
PY - 2005/5
Y1 - 2005/5
N2 - Four-phase (ice + structure-H hydrate + large-molecule guest substance liquid + methane-rich vapor) equilibrium pressure-temperature conditions were measured at temperatures from 252 K to 272 K in systems of water + methane + LMGS, where LMGS is a large-molecule guest substance for a structure-H hydrate. The tested LMGSs were 2,2-dimethylbutane (neohexane), methylcyclohexane, and tert-butyl methyl ether. The results obtained in the 2,2-dimethylbutane system agree with the corresponding data reported by Makogon et al., which were the only data set on the structure-H hydrate phase equilibrium at temperatures below the freezing point of water. Among the three systems studied, the lowest equilibrium pressure at a given temperature was observed in the 2,2-dimethylbutane system, and the highest, in the fert-butyl methyl ether system.
AB - Four-phase (ice + structure-H hydrate + large-molecule guest substance liquid + methane-rich vapor) equilibrium pressure-temperature conditions were measured at temperatures from 252 K to 272 K in systems of water + methane + LMGS, where LMGS is a large-molecule guest substance for a structure-H hydrate. The tested LMGSs were 2,2-dimethylbutane (neohexane), methylcyclohexane, and tert-butyl methyl ether. The results obtained in the 2,2-dimethylbutane system agree with the corresponding data reported by Makogon et al., which were the only data set on the structure-H hydrate phase equilibrium at temperatures below the freezing point of water. Among the three systems studied, the lowest equilibrium pressure at a given temperature was observed in the 2,2-dimethylbutane system, and the highest, in the fert-butyl methyl ether system.
UR - http://www.scopus.com/inward/record.url?scp=19544378532&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=19544378532&partnerID=8YFLogxK
U2 - 10.1021/je0495381
DO - 10.1021/je0495381
M3 - Article
AN - SCOPUS:19544378532
VL - 50
SP - 993
EP - 996
JO - Journal of Chemical & Engineering Data
JF - Journal of Chemical & Engineering Data
SN - 0021-9568
IS - 3
ER -