Abstract
Ternary excess molar enthalpies of 1-propanol+triethylamine + n-heptane, 1-propanol + 1-hexanol + 3-pentanone and 1-propanol + 1-heptanol + 3-pentanone have been predicted using the uniquac associated-solution model with binary parameters alone. For 1-propanol + triethylamine + n-heptane, the uniquac associated-solution model gives better predicted results than those obtained from the eras model of Heintz and the nrtl equation. For the two other ternary systems, the uniquac associated-solution model is superior to the group-contribution model of Nitta-Chao.
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