Vapor-liquid equilibriums of acetonitrile-sec-butyl alcohol and acetonitrile-tert-butyl alcohol

Abstract

Isobarlc vapor-liquid equilibrium data for the systems acetonltrlle-sec-butyl alcohol and acetonltrile-ferf-butyl alcohol are measured and reported at 760 mmHg. Both the systems show positive deviations from Raoult's law and form minimum boiling azeotropes. Margules three suffix equations fit the data well and thermodyamlc consistency Is tested by the Herington method.

Excess Gibbs free energies of the binary mixtures of acetonitrile with butanols at 94.83kPa

“…The order in the case of vapor phase mole fraction of the more volatile component is opposite to that of the activity coefficients and excess Gibbs free energy. Also we did not observe the azeotrope formation for the {acetonitrile(1) + sec-butanol(2)} system in contrast to the measurements of Raviprasad et al [7] at 101.3 kPa.…”

“…15, 343.15, 348.15, and 353.15 K by Venkateswara Rao et al [6]. {Acetonitrile(1) + iso-butanol(2)} system has been investigated: isobarically at 101.3 kPa by Srinivasa Rao et al [3] and Mato and Gondazaler [4], while Nagata [7] carried out studies on the system isothermally at 333.15 K. Investigations on the phase equilibria of {ace-tonitrile(1) + sec-butanol(2)} have been carried out isobarically at 101.3 kPa by Raviprasad et al [8] and isothermally at 333.15 K by Nagata [9]. Phase equilibrium data on the {acetonitrile(1) + tert -butanol(2)} are presented at the isobaric condition of 101.1 kPa by Raviprasad et al [8] and isothermally at 333.15 K by Nagata [10].…”