Abstract
New vapor–liquid equilibrium (VLE) PTx data for two binary mixtures morpholine with 1-butanol and morpholine with 3-methyl-1-butanol under 13 conditions have been measured through a Sweitoslawski-type ebulliometer. Each set of experimental PTx data has been correlated by five activity coefficient models using a Gauss–Newton (GN) optimization procedure, Wilson single parameter, Wilson single-set data treatment, and two versions of the UNIFAC method. Comparisons were also made between available literature values and published data with the present experimental vapor–liquid equilibrium PTx data. The azeotropic points have been determined using the method of Mixon et al.
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