Investigation on vapor–liquid equilibrium for 2-propanol + 1-butanol + 1-pentanol at 101.3 kPa

Isobaric vapor–liquid equilibrium (VLE) data for 2-propanol + 1-butanol, 2-propanol + 1-pentanol, 1-butanol + 1-pentanol and 2-propanol + 1-butanol + 1-pentanol were measured at 101.3 kPa by using an improved Rose still. All the binary VLE data have passed the traditional area test proposed by Herington. The interaction parameters for the Wilson, NRTL and UNIQUAC equations were determined by regressing the binary VLE data. The prediction for ternary system was given by using the three pairs of binary parameters correlated. And the ternary data predicted agreed well with the experiment data.

► The VLE data of three binary systems and one ternary system were measured. ► Both binary system and ternary system at 101.3 kPa we measured have not reported. ► All the experiment data have passed the thermodynamics consistent test. ► These data were correlated with Wilson, NRTL, and UNIQUAC equations. ► There is a quite small deviation between experiment data and correction data.