Vapor-liquid equilibria and density measurement for binary mixtures of o-xylene plus NMF, m-xylene plus NMF and p-xylene + NMF at 333.15 K, 343.15 K and 353.15 K from 0 kPa to 101.3 kPa

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Title:	Vapor-liquid equilibria and density measurement for binary mixtures of o-xylene plus NMF, m-xylene plus NMF and p-xylene + NMF at 333.15 K, 343.15 K and 353.15 K from 0 kPa to 101.3 kPa
Authors:	Chen,WK;Lee,KJ;Chang,CMJ;Ko,JW;Lee,LS
Contributors:	化學工程與材料工程學系
Keywords:	N-METHYLFORMAMIDE;BENZENE;SYSTEMS;WATER;EXPRESSION;TOLUENE;ENERGY
Date:	2010
Issue Date:	2012-03-27 16:26:19 (UTC+8)
Publisher:	國立中央大學
Abstract:	Isothermal vapor-liquid equilibria at 333.15 K, 343.15 K and 353.15 K for three binary mixtures of o-xylene, m-xylene and p-xylene individually mixed with N-methylformamide (NMF), have been obtained at pressures ranged from 0 kPa to 101.3 kPa over the whole composition range. The Wilson, NRTL and UNIQUAC activity coefficient models have been employed to correlate experimental pressures and liquid mole fractions. The non-ideal behavior of the vapor phase has been considered by using the Peng-Robinson equation of state in calculating the vapor mole fraction. Liquid and vapor densities were measured by using two vibrating tube densitometers. The excess molar volumes of the liquid phase were also determined. Three systems of o-xylene + NMF. m-xylene + NMF and p-xylene + NMF mixtures present large positive deviations from the ideal solution and belong to endothermic mixings because their excess Gibbs energies are positive. Temperature dependent intermolecular parameters in the NRTL model correlation were finally obtained in this study. (C) 2009 Elsevier B.V. All rights reserved.
Relation:	FLUID PHASE EQUILIBRIA
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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