High-pressure vapor-liquid equilibria in binary mixtures of carbon dioxide and aromatic hydrocarbons: Experimental data and correlation for CO2 + acetophenone, CO2 + 1-chloronaphthalene, CO2 + methyl benzoate and CO2 + n-propylbenzene

Abstract

Experimental data for the high-pressure vapor-liquid equilibrium in binary mixtures of carbon dioxide and benzene derivatives (acetophenone, 1-chloronaphthalene, methyl benzoate, and n-propylbenzene) are reported. Measurements were performed at temperatures between 313 and 393 K and pressures up to 18 MPa using a flow-type apparatus. The experimental phase compositions are compared with literature values and are successfully correlated applying a generalized Bender equation of state. Furthermore, the new results for the mixtures containing acetophenone and n-propylbenzene are compared with predictions from the group-contribution equation of state (GC-EOS) by Skjold-Jørgensen.