High pressure isothermal vapor-liquid equilibria of carbon dioxide+1,1-difluoroethane

Jeong Won Kang, Ah Ram Kim, Jong Sung Lim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Vapor-liquid equilibrium data for the binary mixture of carbon dioxide (CO2)+1,1-difluoroethane (HFC-152a) were measured at five evenly spaced temperatures of (273. 15, 283. 15, 293. 15, 303. 15 and 313. 15) K by using a circulation-type equilibrium apparatus in which both vapor and liquid phases were recirculated. The experimental data were correlated with the Peng-Robinson equation of state (PR-EoS) using the Wong-Sandler mixing rules combined with the NRTL excess Gibbs free energy model and the Carnahan-Starling-DeSantis equation of state (CSD EoS). Almost all the calculated values with these two models showed good agreement with the experimental data.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalKorean Journal of Chemical Engineering
Issue number1
Publication statusPublished - 2010 Jan
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported by a Sogang University Research Grant in 2008.


  • Carbon Dioxide (CO)
  • Carnahan-Staring-DeSantis Equation of State (CSD EoS)
  • HFC-152a
  • Peng-Robinson Equation of State (PR EoS)
  • Vapor-liquid Equilibria (VLE)

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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