Journal
FLUID PHASE EQUILIBRIA
Volume 449, Issue -, Pages 175-185Publisher
ELSEVIER
DOI: 10.1016/j.fluid.2017.06.018
Keywords
Ethanolamine; Thermodynamic and transport properties; PC-SAFT; CO2 solubility; Thermal expansion; Refractive index; Viscosity
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The densities, viscosities, and refractive indices of monoethanolamine + diethylenetriamine/aminoethylethanolamine binary liquid mixtures were measured at atmospheric pressure and temperatures of 298.15, 303.15 and 308.15 K across the complete composition range. From the experimental data, several thermodynamic properties - including the excess volume, partial molar volume, partial molar volume at infinite dilution, excess Gibbs free energy of flow activation and excess refractive index - were calculated. Excess molar volume and excess refractive index data were correlated to the Redlich-Kister equation, and these properties were used to analyze molecular interactions in the binary mixtures. These volumetric properties were then predicted using the associating version of the PC-SAFT equation of state to test its applicability for amine systems, for which PC-SAFT showed promising results. Finally, viscosities were correlated using various models, including Arrhenius-like and McAllister. (C) 2017 Elsevier B.V. All rights reserved.
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