Vapor−Liquid Equilibrium Data for the Four Binary Systems Containing Fluorocarbon, Hydrofluorocarbon, and Fluorinated Ethers at 101.3 kPa

Abstract

Isobaric vapor−liquid equilibria were measured for the four binary systems of perfluoro-2-methylpentane (FC-5114mmyc2) + perfluorooctane (FC-7118mc6), 1,1,1,2,2,3,3,4,4-nonafluorohexane (HFC-569mccf) + octane, 2,2,2-trifluorodiethyl ether (HFE-356mf-f) + butyl ethyl ether, and methylperfluoroisopropyl ether (HFE-347 mmy) + heptane at atmospheric pressure. The HFE-356mf-f + butyl ethyl ether system formed a minimum boiling azeotrope. The experimental data except for those for the FC-5114mmyc2 + FC-7118mc6 system were correlated by the Wilson and NRTL activity coefficient models. The Wilson and NRTL equations gave similar results. The VLE for the FC-5114mmyc2 + FC-7118mc6 system was predicted to be an ideal solution.