Results 141 to 150 of about 671 (174)
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Thermodynamic representation of the NaCl+Na2SO4+H2O system with electrolyte NRTL model
Fluid Phase Equilibria, 2011Abstract A comprehensive thermodynamic model based on the electrolyte NRTL (eNRTL) activity coefficient equation is developed for the NaCl + H2O binary, the Na2SO4 + H2O binary and the NaCl + Na2SO4 + H2O ternary. The NRTL binary parameters for pairs H2O–(Na+, Cl−) and H2O–(Na+, SO42−), and the aqueous phase infinite dilution heat capacity parameters
Chau-Chyun Chen
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Correlation and prediction of drug molecule solubility with the NRTL-SAC model
2006Abstract The recently proposed Nonrandom Two-Liquid Segment Activity Coefficient model (NRTL-SAC) of Chen and Song (2004) provides a simple and thermodynamically consistent framework to correlate and predict drug solubility in pure solvents and mixed solvents, based on a small initial set of measured solubility data. Used within a process simulator,
Chau-Chyun Chen, Peter A. Crafts
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Modeling of solid-liquid equilibrium using a modified group contribution based NRTL model
Fluid Phase Equilibria, 2019Abstract Solid-liquid phase equilibria data for various systems were predicted using the modified group contribution NRTL equation (GC-NRTL). A priori a previous NRTL group interaction parameters matrix was completed by introducing new groups involved in oxygenated (HCO), nitroginated (HCN, HCNO) and chlorinated (HC Cl) systems, by minimizing a well ...
Youcef Moudjari +2 more
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Calculation of enthalpy of mixing at infinite dilution by the nrtl and uniquac models
Thermochimica Acta, 1990Abstract Enthalpies of mixing at infinite dilution have been calculated for 42 binary systems of liquid mixtures using the NRTL and UNIQUAC models. Temperature-dependent parameters of the models are used in the calculations. These parameters have been estimated by regressing excess Gibbs energy, gE, and enthalpy of mixing, hE, data simultaneously ...
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Temperature dependence of interaction parameters in electrolyte
The electrolyte NRTL model captures the electrolyte solution nonideality over the entire concentration range with two binary interaction parameters. Here, the temperature dependence of the binary parameters is formulated with a Gibbs‐Helmholtz expression containing three temperature coefficients associated with Gibbs energy, enthalpy, and heat capacity
Nazir Hossain +2 more
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Calculation of infinite dilution activity coefficients by the NRTL and UNIQUAC models
The Canadian Journal of Chemical Engineering, 1990AbstractInfinite dilution activity coefficients have been calculated for 42 binary systems using the NRTL and UNIQUAC models. Temperature dependent parameters of the models are used in the calculations. These parameters have been estimated by using excess Gibbs free energy and enthalpy of mixing data simultaneously.
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Prediction of ternary liquid-liquid equilibria using the NRTL and the UNIQUAC models
Korean Journal of Chemical Engineering, 1986The Experimental binodal curve, tie line data, plait point data and the tie lines and plit point, calculated by liquid models for foil wing six ternary liquid liquid equilibria systems: monochlorobenzene-water-acetone, cyclohexane-water-acetone, cyclohexane-water-acetone. chlorform-water-acetone.
Joong So Choi +2 more
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Segment-Based Eyring−NRTL Viscosity Model for Mixtures Containing Polymers
Industrial & Engineering Chemistry Research, 2004A multicomponent liquid mixture viscosity model based on the Eyring and nonrandom two-liquid (NRTL) theories was recently presented and evaluated over the entire concentration range using data from several polymer−solvent systems. In this paper, the original component-based Eyring−NRTL viscosity model is transformed to a segment-based Eyring−NRTL ...
Lawrence T. Novak +2 more
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Relationship between the Intrinsic Viscosity and Eyring−NRTL Viscosity Model Parameters
Industrial & Engineering Chemistry Research, 2004A multicomponent liquid mixture viscosity model based on the Eyring and nonrandom two-liquid (NRTL) theories was recently presented and evaluated over the entire concentration range using data from several polymer−solvent systems. This paper defines the mathematical relationship between the intrinsic viscosity and Eyring−NRTL viscosity model parameters.
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Correlation of heats of mixing data by the NRTL and UNIQUAC models.
Thermochimica Acta, 1992Y. Demirel, H.Ö. Paksoy, H. Gecegörmez
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