Ternary liquid—liquid equilibria and their representation by modified NRTL equations

Measurement and Correlation of Solid−Liquid Equilibria of 18-Crown-6 in Alcohols. 1

“…The calculations with NRTL 2 equation (Nagata et al, 1981) with similar R ) 0.3 gave slightly worse root-meansquare deviations. The UNIQUAC associated-solution model (Nagata, 1985), taking into account the association of alcohols with the Mecke-Kempter model using the values of hydrogen-bond formation enthalpy and the association constants K of Nagata (1985), gave for a correlation of systems of 18-crown-6 + an alcohol deviations from 0.5 to 3.5 K which were much higher than those calculated from the other four equations.…”

Experimental (solid+liquid) or (liquid+liquid) phase equilibria of (amine+nitrile) binary mixtures

“…For the systems {octylamine (1) + acetonitrile (2)}, three methods were used to derive the solute activity coefficients, (c 1 ) from the so-called correlation equations that describe the Gibbs free excess energy, (G E ): the NRTL [21] the NRTL 1 [22], Wilson [23] and UNIQUAC [24]. The solubility may be expressed in a very general manner by:…”

Thermodynamics of binary mixtures of N-methyl-2-pyrrolidinone and ketone. Experimental results and modelling of the (solid+liquid) equilibrium and the (vapour+liquid) equilibrium. The modified UNIFAC (Do) model characterization

“…In this study, four methods were used to fit the solute activity coefficients, c 1 to the so-called correlation equations that describe the Gibbs excess energy, (G E ): the Wilson [15], UNIQUAC ASM [16], NRTL 1 [17] and NRTL 2 [18] models.…”

“…(Solid + liquid) equilibrium data were correlated by the two parameter Wilson equation [15], UNIQUAC associated-solution model [16] and two modification of NRTL equation: NRTL1 and NRTL2 [17].…”