257514 Vapor-Liquid Equilibria of Ternary Systems Containing 1-Butanol (or 2-Butanol), + 1-Hexene and + Methylbenzene At 313.15 K

Monday, October 29, 2012
Hall B (Convention Center )
Chahrazed Ghezouali1, Aouicha Belabbaci2, Rosa M. Villamañan3, Maria C. Martin4, Amina Negadi2, Miguel A. Villamañan3 and Latifa Negadi2, (1)Laboratoire de Thermodynamique Appliquée et Modélisation Moléculaire, University of Tlemcen., Tlemcen, Algeria, (2)Laboratoire de Thermodynamique Appliquée et Modélisation Moléculaire, Université de Tlemcen, Tlemcen, Algeria, (3)Grupo de Termodinámica y Calibración (TERMOCAL), Departamento Ingeniería Energética y Fluidomecánica, Escuela de Ingenierias Industriales, Universidad de Valladolid, Valladolid, Spain, (4)Grupo de Termodinámica y Calibración (TERMOCAL), Departamento Ingeniería Energética y Fluido mecánica, E.T.S. de Ingenieros Industriales, Universidad de Valladolid, Valladolid, Spain

Ethers and alcohols are usually added to gasolines in order to improve their combustion and reduce pollution. Phase equilibrium data of oxygenated mixtures are important for predicting the vapor-phase composition that would be in equilibrium with hydrocarbon mixtures. In addition to the well-established industrial uses of experimental data for completely miscible ( ethers or alcohols + hydrocarbons) systems, there is a general scientific interest in using such experimental data in combination with theories or mathematical models to improve our understanding of molecular interactions in non-ideal liquid systems.

The present work is part of a research program on vapor liquid-equilibria of binary and ternary mixtures containing 1-butanol or 2-butanol with several hydrocarbons.

In this work experimental isothermal P-x-y data for the ternary systems (1-butanol + 1-hexene + methylbenzene) and (2-butanol + 1-hexene + methylbenzene) at 313.15 K are reported.

A static VLE apparatus, consisting of an isothermal total pressure cell, has been employed for measuring the vapor-liquid equilibrium of ternary systems. The apparatus and measuring technique are based on that by Van Ness and co-workers.

Data reduction by Barker’s method provides correlations for GE, using the Wohl expansion; the Wilson, NRTL, and UNIQUAC models have also been applied successfully. Good results have been obtained for all. The investigated mixtures exhibit a positive deviation from ideality.


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