Densities and P-x-y diagrams for carbon dioxide dissolution in methanol, ethanol, and acetone mixtures

Densities and P-x-y diagrams for carbon dioxide + methanol, carbon dioxide + ethanol, and carbon dioxide + acetone were determined by a novel technique of density measurement at 291, 298, 303, 308, 313 K, and pressures up to 8 MPa. Solubilities of carbon dioxide in methanol, ethanol, and acetone were found to increase with applied pressure, but to decrease with increasing temperature. Carbon dioxide has the highest solubility in acetone for the whole pressure range. The Patel-Teja and Peng-Robinson equations of state with the van der Waals one-fluid mixing rules were able to correlate successfully equilibrium data for these three systems. (C) 1997 Elsevier Science B.V.