High-pressure phase behavior and cage occupancy for the CF4 hydrate system

被引：22

作者：

Sugahara, K ^{[1
]}

Yoshida, M ^{[1
]}

Sugahara, T ^{[1
]}

Ohgaki, K ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Div Chem Engn, Toyonaka, Osaka 5608531, Japan

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2004年 / 49卷 / 02期

关键词：

D O I：

10.1021/je0341716

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The three-phase coexisting curve of CF4 hydrate + water + fluid CF4 and laser Raman spectroscopic analysis for the CF4 hydrate system have been investigated in a temperature range of 276 to 317 K and at pressures up to 454 MPa. The present experimental results show that the CF4 molecule is able to occupy both the S- and M-cages in the high-pressure region (above 70 MPa) similar to the cyclopropane hydrate system. The pressure independence of the intermolecular O-O vibration reveals that the CF4 hydrate cage is hardly shrunk by pressurization.

引用

页码：326 / 329

页数：4

共 17 条

[1] WIDE-LINE NMR-STUDY OF REORIENTATION OF SOME SPHERICAL-TOP MOLECULES ENCLATHRATED IN WATER [J].

GARG, SK ;

GOUGH, SR ;

DAVIDSON, DW .

JOURNAL OF CHEMICAL PHYSICS, 1975, 63 (04) :1646-1654

[2]

JEFFREY GA, 1984, INCLUSION COMPOUNDS, V1, pCH5

[3] Clathrate nature of the high-pressure tetrahydrofuran hydrate phase and some new data on the phase diagram of the tetrahydrofuran-water system at pressures up to 3 GPa [J].

Manakov, AY ;

Goryainov, SV ;

Kurnosov, AV ;

Likhacheva, AY ;

Dyadin, YA ;

Larionov, EG .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (31) :7861-7866

[4] ANAESTHETIC POTENCY OF CF4 AND SF6 IN DOGS [J].

MILLER, SL ;

EGER, EI ;

LUNDGREN, C .

NATURE, 1969, 221 (5179) :468-&

[5] THE RAMAN SPECTRUM OF GASEOUS CF4 [J].

MONOSTORI, B ;

WEBER, A .

JOURNAL OF CHEMICAL PHYSICS, 1960, 33 (06) :1867-1868

[6] Influence of water-insoluble organic components on the gas hydrate equilibrium conditions of methane [J].

Mooijer-van den Heuvel, MM ;

Peters, CJ ;

Arons, JD .

FLUID PHASE EQUILIBRIA, 2000, 172 (01) :73-91

[7] Structure and stability of ethane hydrate crystal [J].

Morita, K ;

Nakano, S ;

Ohgaki, K .

FLUID PHASE EQUILIBRIA, 2000, 169 (02) :167-175

[8] High-pressure phase equilibrium and Raman microprobe spectroscopic studies on the methane hydrate system [J].

Nakano, S ;

Moritoki, M ;

Ohgaki, K .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1999, 44 (02) :254-257

[9] High-pressure phase equilibrium and Raman microprobe spectroscopic studies on the CO2 hydrate system [J].

Nakano, S ;

Moritoki, M ;

Ohgaki, K .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1998, 43 (05) :807-810

[10] PHASE-BEHAVIOR OF CO2 HYDRATE-LIQUID CO2-H2O SYSTEM AT HIGH-PRESSURE [J].

OHGAKI, K ;

HAMANAKA, T .

KAGAKU KOGAKU RONBUNSHU, 1995, 21 (04) :800-803

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