High pressure vapor-liquid equilibria for binary systems of carbon dioxide -pentane, -isoprene, -1-pentene and -2-pentene.

Abstract

The high pressure vapor-liquid equilibria for four binary systems (CO2-n-pentane, CO2-isoprene, CO2-1-pentene and CO2-2-pentene) were measured at 310 and 343K by using a static type of apparatus. The consistency test using equilibrium ratio was applied to the experimental data for all systems, and the reliability of the apparatus and data was confirmed. The experimental data were compared with the values correlated by the Peng-Robinson equation of state and the Soave-Redlich-Kwong equation of state. The calculated results for two equations of state were in good agreement with the experimental data excepting those near the critical region.