Density, Viscosity, and Excess Properties of Ternary Aqueous Mixtures of MDEA + MEA, DMEA + MEA, and DEEA + MEA
| Autor: | Lars Erik Øi, Klaus J. Jens, Dag A. Eimer, Sumudu S. Karunarathne |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Analytical chemistry
Entropy of activation 02 engineering and technology Activation energy lcsh:Thermodynamics Mole fraction 01 natural sciences 010305 fluids & plasmas Diethylethanolamine Viscosity chemistry.chemical_compound Molar volume 0203 mechanical engineering lcsh:QC310.15-319 0103 physical sciences lcsh:QC120-168.85 Fluid Flow and Transfer Processes Dimethylethanolamine density Chemistry Mechanical Engineering deea Condensed Matter Physics dmea 020303 mechanical engineering & transports viscosity excess property mdea lcsh:Descriptive and experimental mechanics Ternary operation redlich–kister |
| Zdroj: | Fluids, Vol 5, Iss 1, p 27 (2020) Fluids Volume 5 Issue 1 |
| ISSN: | 2311-5521 |
| Popis: | This study presents the measured densities and viscosities of three ternary aqueous mixtures of tertiary and primary amines. The tertiary amines of n-methyldiethanolamine (MDEA), dimethylethanolamine (DMEA), diethylethanolamine (DEEA), and the primary amine monoethanolamine (MEA) at different concentrations (mass%) were mixed to prepare the liquid mixtures. The excess molar volume VE of the mixtures was analyzed using measured densities to acquire a better understanding of the molecular packing and intermolecular interactions in the mixtures. The excess free energy of activation ∆GE* and excess entropy of activation ∆SE* for viscous flow were determined from the measured viscosities by implementing the theory of rate processes of Eyring. Correlations based on the Redlich&ndash Kister type polynomial were adopted to correlate the excess properties VE and ∆GE* as a function of the amine mole fraction and temperature. The results showed that the correlations were able to represent the measured data with satisfactory accuracies for engineering calculations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|