Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

This work presents new phase equilibrium data of {CO2 + 2-ethyl-1-hexanol} and {CO2 + 2-methyl-2-propanol} systems with or without glycerol. The static synthetic method using a variable-volume view cell was utilized to measure vapor liquid equilibrium saturation points at temperatures from 343 K to 393 K and at pressures up to 20 MPa. The phase transition pressure measurements were carried out by injecting a known amount of carbon dioxide into a mixture of [0.0087 glycerol + 0.9913 (2-ethyl-1-hexanol or 2-methyl-2-propanol)]. This amount of added glycerol did not significantly affect vapor liquid transition pressures, compared to binary systems without glycerol. The Peng Robinson equation of state was used to correlate the experimental phase equilibrium data.