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.

Vapor−Liquid Equilibria for the Carbon Dioxide + Pentane and Carbon Dioxide + Toluene Systems

“…The measurements were made at 310.15 K, for which literature values have been reported, and at 333.15 K and 363.15 K. The experimental VLE data are given in Table 1 and are represented graphically in Figure 2. Figure 2 shows the agreement between the experimental data and the literature values at 310.9, 310.5, and 311.59 K by Besserer and Robinson (1973), Sako et al (1986), and Cheng et al (1989). The average absolute deviations of total pressure are 3.4, 10.1, and 4.7%.…”