High-pressure vapor-liquid equilibria for the binary mixtures of carbon dioxide plus isopropanol (IPA)

초록

Isothermal high-pressure vapor-liquid equilibrium data were measured for the binary mixtures of CO2 + isopropanol (IPA) at various temperatures [(323.15 similar to 353.15) K]. The vapor and liquid compositions and pressures were measured in a circulation-type apparatus. To facilitate easy equilibration, both vapor and liquid phases were circulated separately in the experimental apparatus, and the equilibrium composition was analyzed by an on-line gas chromatograph. The experimental data were compared with literature results and correlated with the Peng-Robinson equations of state (PR EOS) combined with the Wong-Sandler mixing rules. Calculated results with the PR EOS showed good agreement with our experimental data.

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