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

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2 Citations (Scopus)


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
Issue number2
Publication statusPublished - 2008 Mar

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


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