Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/41478
標題: Vapor-liquid equilibria and density measurement for binary mixtures of toluene, benzene, o-xylene, m-xylene, sulfolane and nonane at 333.15 K and 353.15 K
作者: Chen, W.K.
張傑明
Lee, K.J.
Ko, J.W.
Chang, C.M.J.
Hsiang, D.
Lee, L.S.
關鍵字: Vapor-liquid equilibrium
Binary mixture
Sulfolane
Density
Excess
Gibbs energy
aromatic-hydrocarbons
systems
expression
energy
期刊/報告no:: Fluid Phase Equilibria, Volume 287, Issue 2, Page(s) 126-133.
摘要: Isothermal vapor-liquid equilibria at 333.15 K and 353.15 K for four binary mixtures of benzene + nonane, toluene + o-xylene. m-xylene + sulfolane and o-xylene + sulfolane have been obtained at pressures ranged from 0 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 of these solutions were measured by using two vibrating tube densitometers. The excess molar volumes of the liquid phase were also determined. The P-x-y phase behavior indicates that mixtures of m-xylene + sulfolane, o-xylene + sulfolane and benzene + nonane present large positive deviations from the ideal solution and belong to endothermic mixings because their excess Gibbs energies are positive. (C) 2009 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/41478
ISSN: 0378-3812
文章連結: http://dx.doi.org/10.1016/j.fluid.2009.09.024
Appears in Collections:化學工程學系所

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