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

ABSTRACT

The phase behavior of binary and ternary mixtures consisting of carbon dioxide (CO2) (1), acetone (2), and 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]+[BF4]-) (3) was studied experimentally. A high-pressure view-cell technique was used to measure the solubility data in the solvent mixtures of acetone and [BMIM]+[BF4]- at various mole contents at temperatures of (298.2, 313.2 and 323.2) K and pressures up to 6.0 MPa. The experimental solubility data were correlated using the Henry s law and Peng Robinson equation of state (PR EOS), and the magnitude of Henry s constants is in the order of HX3=0.0 less than HX3=0.060 less than HX3=0.204 less than HX3=0.507 less than HX3=1.0 at a given temperature. Moreover, at a fixed mole ratio of organic solvent to ionic liquid (IL), the solubility of CO2 in the mixture of acetone and [BMIM]+[BF4]- is the highest when compared with other previously reported organic solvent + IL separating agents. The mixtures of acetone and [BMIM]+[BF4]- may be used as a potential solvent for industrial application for capturing CO2 efficiently and effectively.