Effect of HFE254 or Cyclopentanone on Phase Equilibrium Dissociation Conditions for Carbon Dioxide Hydrate

Hydrate equilibrium conditions of the CO2 + HFE254 or cyclopentanone + water system are determined by the isometric method. The presence of cyclopentanone promotes CO2 hydrate formation, while HFE254 does not affect the equilibrium pressure of CO2 hydrate. The hydrate dissociation temperature of the...

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Bibliographic Details
Published inJournal of chemical and engineering data Vol. 66; no. 5; pp. 2177 - 2181
Main Authors Song, Jia, Sun, Zhi-Gao, Li, Rong, Dai, Meng-Ling
Format Journal Article
LanguageEnglish
Published American Chemical Society 13.05.2021
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Summary:Hydrate equilibrium conditions of the CO2 + HFE254 or cyclopentanone + water system are determined by the isometric method. The presence of cyclopentanone promotes CO2 hydrate formation, while HFE254 does not affect the equilibrium pressure of CO2 hydrate. The hydrate dissociation temperature of the CO2 + cyclopentanone system increases as the pressure increases. However, the hydrate equilibrium temperature gradually decreases when pressure is above 3.2 MPa and a mixed hydrate of structure I and structure II forms. It can be seen that cyclopentanone is a thermodynamic accelerator that can promote the formation of CO2 hydrate.
ISSN:0021-9568
1520-5134
DOI:10.1021/acs.jced.1c00063