PMID- 23621777
OWN - NLM
STAT- MEDLINE
DCOM- 20131227
LR  - 20130523
IS  - 1520-5215 (Electronic)
IS  - 1089-5639 (Linking)
VI  - 117
IP  - 20
DP  - 2013 May 23
TI  - Structure-H methane + 1,1,2,2,3,3,4-heptafluorocyclopentane mixed hydrate at 
      pressures up to 373 MPa.
PG  - 4338-41
LID - 10.1021/jp402777a [doi]
AB  - Thermodynamic stability boundary of structure-H hydrates with large guest species 
      and methane (CH4) at extremely high pressures has been almost unclear. In the 
      present study, the four-phase equilibrium relations in the structure-H CH4 + 
      1,1,2,2,3,3,4-heptafluorocyclopentane (1,1,2,2,3,3,4-HFCP) mixed hydrate system 
      were investigated in a temperature range of (281.05 to 330.12) K and a pressure 
      range up to 373 MPa. The difference between equilibrium pressures in the 
      structure-H CH4 + 1,1,2,2,3,3,4-HFCP mixed hydrate system and the structure-I 
      simple CH4 hydrate system gets larger with increase in temperature. The 
      structure-H CH4 + 1,1,2,2,3,3,4-HFCP mixed hydrate survives even at 330 K and 373 
      MPa without any structural phase transition. The maximum temperature where the 
      structure-H CH4 + 1,1,2,2,3,3,4-HFCP mixed hydrate is thermodynamically stable is 
      likely to be beyond that of the structure-H simple CH4 hydrate.
FAU - Suzuki, Sumihiro
AU  - Suzuki S
AD  - Division of Chemical Engineering, Department of Materials Engineering Science, 
      Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 
      Toyonaka, Osaka 560-8531, Japan.
FAU - Matsumoto, Yuuki
AU  - Matsumoto Y
FAU - Katsuta, Yoshito
AU  - Katsuta Y
FAU - Hashimoto, Shunsuke
AU  - Hashimoto S
FAU - Sugahara, Takeshi
AU  - Sugahara T
FAU - Ohgaki, Kazunari
AU  - Ohgaki K
LA  - eng
PT  - Journal Article
DEP - 20130509
PL  - United States
TA  - J Phys Chem A
JT  - The journal of physical chemistry. A
JID - 9890903
RN  - 0 (1,1,2,2,3,3,4-heptafluorocyclopentane)
RN  - 0 (Cyclopentanes)
RN  - 0 (Hydrocarbons, Fluorinated)
RN  - 059QF0KO0R (Water)
RN  - OP0UW79H66 (Methane)
SB  - IM
MH  - Cyclopentanes/*chemistry
MH  - Hydrocarbons, Fluorinated/*chemistry
MH  - Methane/*chemistry
MH  - Molecular Structure
MH  - Pressure
MH  - Water/chemistry
EDAT- 2013/04/30 06:00
MHDA- 2013/12/29 06:00
CRDT- 2013/04/30 06:00
PHST- 2013/04/30 06:00 [entrez]
PHST- 2013/04/30 06:00 [pubmed]
PHST- 2013/12/29 06:00 [medline]
AID - 10.1021/jp402777a [doi]
PST - ppublish
SO  - J Phys Chem A. 2013 May 23;117(20):4338-41. doi: 10.1021/jp402777a. Epub 2013 May 
      9.