Density, viscosity and excess properties of binary mixtures of monoethanolamine and 2-alkoxyethanols at temperatures from (293.15 to 353.15) K

Abstract Densities and viscosities for the binary liquid mixtures of monoethanolamine (MEA) with 2-alkoxyethanols (2-ethoxyethanol (EGEE) and 2-butoxyethanol (EGBE)) were measured over the entire concentration range at temperatures of 293.15–353.15 K and atmospheric pressure. From the experimental results, the excess molar volume (VE), viscosity deviations (∆η) and excess Gibbs free energy of activation of viscous flow (∆G⁎E) were calculated and the excess/deviations properties for the studied binary systems were fitted with the Redlich-Kister equation to estimate the binary interaction parameters. The results were analyzed in terms of intermolecular interactions between unlike molecules and intramolecular interactions within like associated molecules. The densities and viscosities of CO2-loaded solutions were also measured and correlated with the proposed correlations. The calculated values of density and viscosity for the binary/ternary systems are in good agreement with the experimental values, with AADs within 0.2% for density and 3.2% for viscosity. The FTIR spectral analysis for the binary mixtures of MEA with 2-alkoxyethanols at various concentrations suggests the presence of weak interactions between component molecules in the systems, and also supports the findings of excess properties.

• Publication year

  2020

• Venue

  Journal of Molecular Liquids

• Publication date

  2020-02-01

• Fields of study

  Materials Science, Chemistry

• Identifiers
  DOI 10.1016/j.molliq.2019.112191
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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