Liquid–liquid equilibria for quaternary mixtures of nonane+undecane+(benzene or toluene or m-xylene)+sulfolane at 298.15 and 313.15K

descriptionPublicationkeyboard_double_arrow_right Article 01 May 2007 English Publisher:Elsevier BVJournal:Fluid Phase Equilibria, volume 253, pages 137-141 (issn: 0378-3812,

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Authors: Rilvia S. Santiago; Martín Aznar;

doi: 10.1016/j.fluid.2007.02.005

Liquid–liquid equilibria for quaternary mixtures of nonane+undecane+(benzene or toluene or m-xylene)+sulfolane at 298.15 and 313.15K

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Abstract

Abstract Liquid–liquid equilibrium (LLE) data were measured for three quaternary systems containing sulfolane, nonane + undecane + benzene + sulfolane, nonane + undecane + toluene + sulfolane and nonane + undecane + m-xylene + sulfolane, at T = 298.15 and 313.15 K and ambient pressure. The experimental quaternary liquid–liquid equilibrium data have been satisfactorily represented by using NRTL and UNIFAC-LLE models for the activity coefficient. The calculated compositions based on the NRTL model were found to in a better agreement with the experiment than those based on the UNIFAC-LLE model.

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State University of Campinas
Brazil

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