Ternary Phase Equilibria of the Iso-Propanol+Water+Carbon Dioxide System at High Pressure

Chun BS; Wilkinson GT

Korean Journal of Chemical Engineering, Vol.16, No.2, 187-192, March, 1999

Ternary phase diagrams are presented for the system : iso-propanol(IPA)+water+carbon dioxide at temperatures from 15 to 70℃ 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. Selectivity reversal was observed at differing pressures. High selectivity of CO₂ for IPA was achieved in the near-critical liquid and in supercritical carbon dioxide at high pressure.

Keywords:Phase Equilibria;Iso-Propanol;Carbon Dioxide;Water;Supercritical Fluid Extraction

[References]

Adrian T, Hasse H, Maurer G, J. Supercrit. Fluids, 9(1), 19 (1996)
Angus S, Armstrong B, de Reuck KM, "International Thermodynamic Tables of Fluid State Carbon Dioxide," Pergamon Press, Oxford (1976)
Chrastil J, J. Phys. Chem., 34, 3016 (1982)
Chun BS, Wilkinson GT, Ind. Eng. Chem. Res., 34(12), 4371 (1995)
Chun BS, Lee HG, Cheon JK, Wilkinson G, Korean J. Chem. Eng., 13(3), 234 (1996)
Chun BS, Yang JY, Wilkinson GT, Foods Biotechnol., 4, 174 (1995)
DiAndreth JR, Paulaitis ME, "Multiphase Equilibria for Water-Carbon Dioxide-2-Propanol Mixtures at Elevated Pressures," ACS Symp. Ser., 82 (1988)
Francis AW, J. Phys. Chem., 1, 179 (1953)
Gilbert ML, Paulaitis ME, J. Chem. Eng. Data, 31, 296 (1984)
Hemmaplardh B, King AD, J. Phys. Chem., 76, 2170 (1972)
Lim JS, Lee YY, Chun HS, J. Supercrit. Fluids, 7(4), 219 (1994)
Magashi AN, Wilkinson GT, Casimir D, "Flavour Enhancement of Light Wines with Liquid Carbon Dioxide Extracts," Proc. Chemeca 90, Aug. 1990 (1990)
Mchugh M, Mallett MW, Kohn JP, "High Pressure Phase Equilibria of Alcohol-Water-Supercritical Solvent Mixtures," AIChE Annual Meeting, Nov., 113 (1981)
Paulaitis ME, Diandreth JR, Kander RG, "An Experimental Study of Phase Equilibria for Isopropanol-Water-CO₂ Mixtures: Phase Related to Supercritical Fluid Extraction of Organic Compounds from Aqueous Solutions," Supercritical Fluid Technology, Elsevier, New York, 149 (1985)
Paulaitis ME, Penninger JML, Gray RD, Davidson P, "Chemical; Engineering at Supercritical Fluid Conditions," Ann Arbor Science (1983)
Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15, 59 (1976)

[1] Adrian T, Hasse H, Maurer G, J. Supercrit. Fluids, 9(1), 19 (1996)

[2] Angus S, Armstrong B, de Reuck KM, "International Thermodynamic Tables of Fluid State Carbon Dioxide," Pergamon Press, Oxford (1976)

[3] Chrastil J, J. Phys. Chem., 34, 3016 (1982)

[4] Chun BS, Wilkinson GT, Ind. Eng. Chem. Res., 34(12), 4371 (1995)

[5] Chun BS, Lee HG, Cheon JK, Wilkinson G, Korean J. Chem. Eng., 13(3), 234 (1996)

[6] Chun BS, Yang JY, Wilkinson GT, Foods Biotechnol., 4, 174 (1995)

[7] DiAndreth JR, Paulaitis ME, "Multiphase Equilibria for Water-Carbon Dioxide-2-Propanol Mixtures at Elevated Pressures," ACS Symp. Ser., 82 (1988)

[8] Francis AW, J. Phys. Chem., 1, 179 (1953)

[9] Gilbert ML, Paulaitis ME, J. Chem. Eng. Data, 31, 296 (1984)

[10] Hemmaplardh B, King AD, J. Phys. Chem., 76, 2170 (1972)

[11] Lim JS, Lee YY, Chun HS, J. Supercrit. Fluids, 7(4), 219 (1994)

[12] Magashi AN, Wilkinson GT, Casimir D, "Flavour Enhancement of Light Wines with Liquid Carbon Dioxide Extracts," Proc. Chemeca 90, Aug. 1990 (1990)

[13] Mchugh M, Mallett MW, Kohn JP, "High Pressure Phase Equilibria of Alcohol-Water-Supercritical Solvent Mixtures," AIChE Annual Meeting, Nov., 113 (1981)

[14] Paulaitis ME, Diandreth JR, Kander RG, "An Experimental Study of Phase Equilibria for Isopropanol-Water-CO₂ Mixtures: Phase Related to Supercritical Fluid Extraction of Organic Compounds from Aqueous Solutions," Supercritical Fluid Technology, Elsevier, New York, 149 (1985)

[15] Paulaitis ME, Penninger JML, Gray RD, Davidson P, "Chemical; Engineering at Supercritical Fluid Conditions," Ann Arbor Science (1983)

[16] Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15, 59 (1976)