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Title
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Thermodynamic properties and CO2 solubility of monoethanolamine + diethylenetriamine/aminoethylethanolamine mixtures: Experimental measurements and thermodynamic modeling
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Type
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JournalPaper
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Keywords
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Ethanolamine,Thermodynamic and transport properties,PC-SAFT,CO2 solubility,Thermal expansion,Refractive index,Viscosity
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Abstract
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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
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Researchers
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Fransisco Vargas (Fourth Researcher), Abbasali Rostami (Third Researcher), Caleb Sisco (Second Researcher), Mehrdad Moosavi (First Researcher)
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