Thermodynamic characterization of second generation biofuels: Vapour–liquid equilibria and excess enthalpies of the binary mixtures 1-pentanol and cyclohexane or toluene

► VLE and HE measurements are reported for the binary mixtures 1-pentanol and cyclohexane or toluene. ► The experimental data were correlated using well-known models. ► A positive deviation from the ideal behaviour is observed for both systems. The paper reports accurate experimental data of vapour–...

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Bibliographic Details
Published in:Fluid phase equilibria 2012-03, Vol.317, p.127-131
Main Authors: Moreau, Alejandro, Martín, M. Carmen, Chamorro, César R., Segovia, José J.
Format: Article
Language:English
Subjects:
1-Pentanol
Chemistry
Cyclohexane
Exact sciences and technology
Excess enthalpies
General and physical chemistry
Phase equilibria
Toluene
VLE
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Summary:► VLE and HE measurements are reported for the binary mixtures 1-pentanol and cyclohexane or toluene. ► The experimental data were correlated using well-known models. ► A positive deviation from the ideal behaviour is observed for both systems. The paper reports accurate experimental data of vapour–liquid equilibria at T=313.15K, using an isothermal total pressure cell, for the binary systems (1-pentanol+cyclohexane) and (1-pentanol+toluene). The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. Also, the enthalpies of mixing were measured for the same systems at two different temperatures T=(298.15 and 313.15)K using an isothermal flow calorimeter and the excess enthalpies were correlated by the Redlich–Kister equation. The thermodynamic behaviour of both systems is discussed.
ISSN:0378-3812
1879-0224
DOI:10.1016/j.fluid.2012.01.007