High-Pressure Phase Behavior and Cage Occupancy for the CF4 Hydrate System

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 o...

Full description

Saved in:
Bibliographic Details
Published inJournal of chemical and engineering data Vol. 49; no. 2; pp. 326 - 329
Main Authors Sugahara, Keisuke, Yoshida, Masayoshi, Sugahara, Takeshi, Ohgaki, Kazunari
Format Journal Article
LanguageEnglish
Published American Chemical Society 11.03.2004
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:ark:/67375/TPS-K8BW43QM-J
istex:A4FD4222232D1E49705D4DD9A20B6FC0261B7108
ISSN:0021-9568
1520-5134
DOI:10.1021/je0341716