Ternary phase equilibria of the iso-propanol+water+carbon dioxide system at high pressure

Ternary phase diagrams are presented for the system: iso-propanol(IPA)+wate r+carbon dioxide at temperatures from 15 to 70 degrees C and pressures from 7 to 17 MPa. The distribution coefficients of IPA between the dense phase carbon dioxide and water changed dramatically with temperature and pressure . in the vicinity of the critical point, distribution coefficients was low, yet at liquid-like densities carbon dioxide had a high affinity for IPA. S electivity reversal was observed at differing pressures. High selectivity o f CO2 for IPA was achieved in the near-critical liquid and in supercritical carbon dioxide at high pressure.