Excess Gibbs free energy of butyl acetate with cyclohexane and aromatic hydrocarbons at 308.15K

Sanjeev Maken, Naveen Verma, Ankur Gaur, Ho Jun Song, Krishan Chander Singh, Jin Won Park

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Molar excess Gibbs free energies of mixing (C E ) for butyl acetate+cyclohexane or benzene or toluene or o- or m- or p-xylene were calculated by using Barker's method from the measured vapor pressure data by static method at 308.15±0.01 K over the entire composition range. The G E values for the binary mixtures containing cyclohexane or benzene are positive; while these are negative for toluene, o-, m- and p-xylene system over the whole composition range. The G E values of an equimolar mixture for these systems vary in the order: cyclohexane>benzene>o- xylene>m-xylene>p-xylene>toluene. The G E values for these systems were also calculated by Sanchez and Lacome theory using the previously published excess enthalpy and excess volume data. It is found that while values of G E from Sanchez and Lacombe theory are in reasonably good agreement with those calculated by Barker method for m-xylene and p-xylene mixtures, agreement is very poor for other systems although they predict the sign of G E data except in the case of mixtures containing benzene.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalKorean Journal of Chemical Engineering
Volume25
Issue number2
DOIs
Publication statusPublished - 2008 Mar 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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