Phase equilibria of the water+1-butanol+toluene ternary system at 101.3kPa

Abstract

Please cite this article as: Vicente Gomis, Alicia Font, María Dolores Saquete, Jorge García-Cano, Phase equilibria of the water + 1-butanol + toluene ternary system at 101.3kPa, Fluid Phase Equilibria http://dx.doi.org/10.1016/j.fluid. 2014.10.038 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Phase equilibria of the water + 1-butanol + toluene ternary system at 101.3 kPa Vicente Gomis 1 , Alicia Font, María Dolores Saquete, Jorge García-Cano University of Alicante. PO Box 99 E-03080 Alicante (Spain) *Corresponding author:Tel. +34 965903400. vgomis@ua.es HighlightsThe phase equilibria of the system water + 1-butanol + toluene have been studied.Isothermal liquid-liquid equilibrium data at 313.15 K was determined.Isobaric vapour-liquid-liquid equilibrium data at 101.3 kPa was also determined.Data obtained has been checked against literature data and those predicted with binary interaction parameters.All experimental data have been correlated with thermodynamic models. AbstractIsobaric vapour-liquid and vapour-liquid-liquid equilibrium data for the water + 1-butanol + toluene ternary system were measured at 101.3 kPa with a modified VLE 602 Fischer apparatus. In addition, the liquid-liquid equilibrium data at 313.15 K were measured and compared with data from other authors at different temperatures. The system exhibits a ternary heterogeneous azeotrope whose temperature and composition have been determined by interpolation. The thermodynamic consistency of the experimental vapour-liquid and vapour-liquid-liquid data was checked by means of the Wisniak's L i /W i consistency test. Moreover, the vapour-liquid and the liquid-liquid equilibrium correlation for the ternary system with NRTL and UNIQUAC models, together with the prediction made with the UNIFAC model, were studied and discussed.

Vapor pressure curves and isobaric vapor–liquid equilibrium for binary systems with compounds obtained from glycerol to be used as components of a bio-diesel mixture

“…The Fischer Minitron VLE was used in the range 10-1026 mbar and the Mensor High-Speed Pneumatic Pressure Controller model CPC3000 above that range. The apparatus is a wellknown phase equilibria determination equipment validated many times by our research group [13][14][15][16][17][18][19][20]. Moreover, prior to the determination of new experimental data, the overall performance is checked with known data (e.g.…”

Simultaneous VLLE data correlation for ternary systems: Modification of the NRTL equation for improved calculations

“…NRTL [1] and similar equations for the liquid phase excess Gibbs free energy has shown severe limitations to simultaneously represent VLE and VLLE data [2][3][4][5]. Additionally, the correlation provided by these types of equations for ternary systems, as shown in the Data collection of DECHEMA Data Series [6] may be acceptable when dealing only with the ternary data but yield poorer results when attempting the simultaneous correlation of the ternary and the binary data.…”

Modeling Vapor–Liquid–Liquid Phase Equilibria in Fischer–Tropsch Syncrude

“…Based on the mean deviations of water and 1-butanol in the organic and aqueous phases, NRTL was marginally better than UNIQUAC for the organic phase prediction, but considerably worse for the aqueous phase prediction. In another study by the same group, 35 the VLLE of the water− 1-butanol−toluene system was determined. Model predictions using NRTL and UNIQUAC found that UNIQUAC consistently had lower mean deviations for the prediction of water and 1-butanol in the organic and aqueous phases.…”