2 0 2009 ati ker 0 journal Original Atik, Z.[Zadjia] Kerboub, W.[Wahiba] J. Chem. Eng. Data 2009 2009-02-25 Effect of Temperature on Phase Equilibrium of the Mixed-Solvent System of (2,2,2-Trifluoroethanol + Methanol + Cyclohexane) An experimental study was carried out to construct a type II phase diagram of the liquid-liquid equilibrium of the mixed solvents of (2,2,2-trifluoroethanol + methanol + cyclohexane) at the temperatures T ) (283.15, 293.15, 303.15, and 313.15) K, and under atmospheric pressure of 101.2 kPa. Gas-liquid chromatography was used to obtain the mole fractions of the tie line ends of the two liquid phases at equilibrium. The NRTL and UNIQUAC equations reproduced satisfactorily all the measured data with an average root-mean-square deviation in phase-mole fractions equal to 1.04 %. The binary intermolecular interactions governing the mixture of unlike molecules were estimated by means of the same equations. The temperature effect on the system miscibility is slightly more significant on the cyclohexane-rich phase than on the (trifluoroethanol + methanol)-rich phase. 10.1021/je8002964 54 282-285 1 heptane C7H16 1 Commercial source 1 Molecular sieve treatment 1 99.5 3 Gas chromatography 2 methanol CH4O 1 Commercial source 1 Molecular sieve treatment 1 99.7 3 Gas chromatography 3 2-propanol C3H8O 1 Commercial source 1 Molecular sieve treatment 1 99.5 3 Gas chromatography 4 cyclohexane C6H12 1 Commercial source 1 Molecular sieve treatment 1 99.8 3 Gas chromatography 5 2,2,2-trifluoroethanol C2H3F3O 1 Commercial source 1 Molecular sieve treatment 1 99.2 3 Gas chromatography 1 1 Principal objective of the work KRP TRC 2/13/2009 1 Mass density, kg/m3 Vibrating tube method Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 298.15 5 1 .03 1 680 4 1 .03 2 1 Principal objective of the work KRP TRC 2/13/2009 1 Mass density, kg/m3 Vibrating tube method Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 298.15 5 1 .03 1 787 4 1 .03 3 1 Principal objective of the work KRP TRC 2/13/2009 1 Mass density, kg/m3 Vibrating tube method Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 298.15 5 1 .03 1 781.4 4 1 .03 4 1 Principal objective of the work KRP TRC 2/13/2009 1 Mass density, kg/m3 Vibrating tube method Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 298.15 5 1 .03 1 774 4 1 .03 5 1 Principal objective of the work KRP TRC 2/13/2009 1 Mass density, kg/m3 Vibrating tube method Liquid Direct value, X 1 Author Liquid Pressure, kPa 101.325 6 1 Temperature, K 1 Author 1 298.15 5 1 .03 1 1382.4 5 1 .03 2 1 5 1 4 1 Principal objective of the work RDC TRC 2/24/2009 1 Mole fraction Chromatography 5 Liquid mixture 1 Direct value, X 1 Author 2 Mole fraction Chromatography 2 Liquid mixture 2 Direct value, X 1 Author 3 Mole fraction Chromatography 5 Liquid mixture 2 Direct value, X 1 Author Liquid mixture 1 Liquid mixture 2 Pressure, kPa 100 3 1 Temperature, K 1 Author 2 Mole fraction 2 Liquid mixture 1 1 Author 1 303.15 5 1 .03 2 .894 3 1 .003 1 .15 3 1 .003 2 0 0 1 .003 3 0 0 1 .003 1 313.15 5 1 .03 2 .881 3 1 .003 1 .188 3 1 .003 2 0 0 1 .003 3 0 0 1 .003 1 293.15 5 1 .03 2 .744 3 1 .003 1 .127 3 1 .003 2 .157 3 1 .003 3 .009 1 1 .003 1 293.15 5 1 .03 2 .85 3 1 .003 1 .125 3 1 .003 2 .052 2 1 .003 3 .01 2 1 .003 1 293.15 5 1 .03 2 .697 3 1 .003 1 .129 3 1 .003 2 .202 3 1 .003 3 .011 2 1 .003 1 303.15 5 1 .03 2 .855 3 1 .003 1 .161 3 1 .003 2 .031 2 1 .003 3 .012 2 1 .003 1 313.15 5 1 .03 2 .797 3 1 .003 1 .197 3 1 .003 2 .082 2 1 .003 3 .012 2 1 .003 1 303.15 5 1 .03 2 .799 3 1 .003 1 .16 3 1 .003 2 .085 2 1 .003 3 .013 2 1 .003 1 293.15 5 1 .03 2 .643 3 1 .003 1 .12 3 1 .003 2 .253 3 1 .003 3 .019 2 1 .003 1 283.15 5 1 .03 2 .884 3 1 .003 1 .066 2 1 .003 2 .079 2 1 .003 3 .02 2 1 .003 1 303.15 5 1 .03 2 .698 3 1 .003 1 .158 3 1 .003 2 .176 3 1 .003 3 .024 2 1 .003 1 313.15 5 1 .03 2 .721 3 1 .003 1 .197 3 1 .003 2 .148 3 1 .003 3 .032 2 1 .003 1 293.15 5 1 .03 2 .546 3 1 .003 1 .107 3 1 .003 2 .337 3 1 .003 3 .033 2 1 .003 1 303.15 5 1 .03 2 .61 3 1 .003 1 .153 3 1 .003 2 .263 3 1 .003 3 .036 2 1 .003 1 283.15 5 1 .03 2 .802 3 1 .003 1 .053 2 1 .003 2 .157 3 1 .003 3 .036 2 1 .003 1 313.15 5 1 .03 2 .654 3 1 .003 1 .194 3 1 .003 2 .207 3 1 .003 3 .036 2 1 .003 1 283.15 5 1 .03 2 .729 3 1 .003 1 .049 2 1 .003 2 .23 3 1 .003 3 .04 2 1 .003 1 293.15 5 1 .03 2 .465 3 1 .003 1 .097 2 1 .003 2 .432 3 1 .003 3 .045 2 1 .003 1 283.15 5 1 .03 2 .646 3 1 .003 1 .045 2 1 .003 2 .321 3 1 .003 3 .046 2 1 .003 1 283.15 5 1 .03 2 .554 3 1 .003 1 .042 2 1 .003 2 .406 3 1 .003 3 .049 2 1 .003 1 283.15 5 1 .03 2 .442 3 1 .003 1 .04 2 1 .003 2 .509 3 1 .003 3 .052 2 1 .003 1 283.15 5 1 .03 2 .367 3 1 .003 1 .038 2 1 .003 2 .581 3 1 .003 3 .055 2 1 .003 1 313.15 5 1 .03 2 .557 3 1 .003 1 .182 3 1 .003 2 .3 3 1 .003 3 .056 2 1 .003 1 293.15 5 1 .03 2 .435 3 1 .003 1 .086 2 1 .003 2 .461 3 1 .003 3 .057 2 1 .003 1 283.15 5 1 .03 2 .221 3 1 .003 1 .035 2 1 .003 2 .716 3 1 .003 3 .058 2 1 .003 1 303.15 5 1 .03 2 .517 3 1 .003 1 .138 3 1 .003 2 .358 3 1 .003 3 .059 2 1 .003 1 283.15 5 1 .03 2 .317 3 1 .003 1 .034 2 1 .003 2 .621 3 1 .003 3 .06 2 1 .003 1 283.15 5 1 .03 2 .16 3 1 .003 1 .031 2 1 .003 2 .762 3 1 .003 3 .061 2 1 .003 1 283.15 5 1 .03 2 0 0 1 .003 1 0 0 1 .003 2 .875 3 1 .003 3 .061 2 1 .003 1 283.15 5 1 .03 2 .072 2 1 .003 1 .013 2 1 .003 2 .836 3 1 .003 3 .066 2 1 .003 1 303.15 5 1 .03 2 .426 3 1 .003 1 .129 3 1 .003 2 .446 3 1 .003 3 .07 2 1 .003 1 293.15 5 1 .03 2 .315 3 1 .003 1 .065 2 1 .003 2 .578 3 1 .003 3 .079 2 1 .003 1 313.15 5 1 .03 2 .478 3 1 .003 1 .163 3 1 .003 2 .373 3 1 .003 3 .083 2 1 .003 1 293.15 5 1 .03 2 .261 3 1 .003 1 .046 2 1 .003 2 .636 3 1 .003 3 .095 2 1 .003 1 303.15 5 1 .03 2 .315 3 1 .003 1 .106 3 1 .003 2 .547 3 1 .003 3 .095 2 1 .003 1 293.15 5 1 .03 2 .198 3 1 .003 1 .034 2 1 .003 2 .698 3 1 .003 3 .106 3 1 .003 1 293.15 5 1 .03 2 0 0 1 .003 1 0 0 1 .003 2 .842 3 1 .003 3 .108 3 1 .003 1 313.15 5 1 .03 2 .354 3 1 .003 1 .144 3 1 .003 2 .483 3 1 .003 3 .108 3 1 .003 1 293.15 5 1 .03 2 .15 3 1 .003 1 .013 2 1 .003 2 .744 3 1 .003 3 .119 3 1 .003 1 303.15 5 1 .03 2 .238 3 1 .003 1 .079 2 1 .003 2 .601 3 1 .003 3 .121 3 1 .003 1 313.15 5 1 .03 2 .262 3 1 .003 1 .131 3 1 .003 2 .556 3 1 .003 3 .126 3 1 .003 1 303.15 5 1 .03 2 .182 3 1 .003 1 .055 2 1 .003 2 .658 3 1 .003 3 .146 3 1 .003 1 303.15 5 1 .03 2 .111 3 1 .003 1 .048 2 1 .003 2 .715 3 1 .003 3 .157 3 1 .003 1 313.15 5 1 .03 2 .201 3 1 .003 1 .102 3 1 .003 2 .594 3 1 .003 3 .16 3 1 .003 1 303.15 5 1 .03 2 0 0 1 .003 1 0 0 1 .003 2 .81 3 1 .003 3 .16 3 1 .003 1 303.15 5 1 .03 2 .078 2 1 .003 1 .034 2 1 .003 2 .744 3 1 .003 3 .16 3 1 .003 1 313.15 5 1 .03 2 .167 3 1 .003 1 .075 2 1 .003 2 .631 3 1 .003 3 .188 3 1 .003 1 313.15 5 1 .03 2 .117 3 1 .003 1 .052 2 1 .003 2 .667 3 1 .003 3 .212 3 1 .003 1 313.15 5 1 .03 2 .083 2 1 .003 1 .035 2 1 .003 2 .697 3 1 .003 3 .231 3 1 .003 1 313.15 5 1 .03 2 0 0 1 .003 1 0 0 1 .003 2 .739 3 1 .003 3 .242 3 1 .003