Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution
Thermodynamic evaluation of deep eutectic solvents in separation of binary mixtures is increasing, and this is due to an easy preparation of deep eutectic solvents and their properties can be altered by different combinations of hydrogen bond acceptor to hydrogen bond donor. This study presents the...
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Elsevier
2025-03-01
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| Series: | Chemical Thermodynamics and Thermal Analysis |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667312624000245 |
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| author | Bakusele Kabane Balungile Gasa Nirmala Deenadayalu |
| author_facet | Bakusele Kabane Balungile Gasa Nirmala Deenadayalu |
| author_sort | Bakusele Kabane |
| collection | DOAJ |
| description | Thermodynamic evaluation of deep eutectic solvents in separation of binary mixtures is increasing, and this is due to an easy preparation of deep eutectic solvents and their properties can be altered by different combinations of hydrogen bond acceptor to hydrogen bond donor. This study presents the intermolecular interactions between the prepared deep eutectic solvent with volatile organic solvents at different temperatures, T = (313.15 – 353.15) K and at atmospheric pressure. The investigated solvents were prepared by the combination of tetrabutylammonium acetate as hydrogen bond acceptor and ethylene glycol or diethylene glycol as hydrogen bond donor at a molar ratio of 1:3, respectively. The influence of hydrogen bond donor in separation of binary mixtures was evaluated and discussed. The intermolecular interactions of the prepared deep eutectic solvents with volatile organic solvents were evaluated based on the activity coefficients at infinite dilution values measured by the use of gas liquid chromatography. Excess thermodynamic properties at infinite dilution including excess enthalpies, Gibbs free energies and entropies were computed to further elucidate the interactions between the systems. Selectivity and capacity values were calculated to determine the feasibility of the solvents in separating industrial binary mixtures. The solvents were found promising for the separation of close boiling point mixtures comprising alcohols. |
| format | Article |
| id | doaj-art-9a2bf90b4f2e4e869819f0e9f4468f98 |
| institution | Kabale University |
| issn | 2667-3126 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Thermodynamics and Thermal Analysis |
| spelling | doaj-art-9a2bf90b4f2e4e869819f0e9f4468f982025-02-10T04:35:26ZengElsevierChemical Thermodynamics and Thermal Analysis2667-31262025-03-0117100151Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilutionBakusele Kabane0Balungile Gasa1Nirmala Deenadayalu2Corresponding author.; Department of Physical Chemistry laboratories, Faculty of Applied Sciences, Durban University of Technology, Durban 4001, South AfricaDepartment of Physical Chemistry laboratories, Faculty of Applied Sciences, Durban University of Technology, Durban 4001, South AfricaDepartment of Physical Chemistry laboratories, Faculty of Applied Sciences, Durban University of Technology, Durban 4001, South AfricaThermodynamic evaluation of deep eutectic solvents in separation of binary mixtures is increasing, and this is due to an easy preparation of deep eutectic solvents and their properties can be altered by different combinations of hydrogen bond acceptor to hydrogen bond donor. This study presents the intermolecular interactions between the prepared deep eutectic solvent with volatile organic solvents at different temperatures, T = (313.15 – 353.15) K and at atmospheric pressure. The investigated solvents were prepared by the combination of tetrabutylammonium acetate as hydrogen bond acceptor and ethylene glycol or diethylene glycol as hydrogen bond donor at a molar ratio of 1:3, respectively. The influence of hydrogen bond donor in separation of binary mixtures was evaluated and discussed. The intermolecular interactions of the prepared deep eutectic solvents with volatile organic solvents were evaluated based on the activity coefficients at infinite dilution values measured by the use of gas liquid chromatography. Excess thermodynamic properties at infinite dilution including excess enthalpies, Gibbs free energies and entropies were computed to further elucidate the interactions between the systems. Selectivity and capacity values were calculated to determine the feasibility of the solvents in separating industrial binary mixtures. The solvents were found promising for the separation of close boiling point mixtures comprising alcohols.http://www.sciencedirect.com/science/article/pii/S2667312624000245Intermolecular interactionsExcess thermodynamic propertiesDeep eutectic solventsSelectivityHydrogen bond donor |
| spellingShingle | Bakusele Kabane Balungile Gasa Nirmala Deenadayalu Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution Chemical Thermodynamics and Thermal Analysis Intermolecular interactions Excess thermodynamic properties Deep eutectic solvents Selectivity Hydrogen bond donor |
| title | Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution |
| title_full | Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution |
| title_fullStr | Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution |
| title_full_unstemmed | Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution |
| title_short | Thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution |
| title_sort | thermodynamic evaluation of intermolecular interaction selectivity in separation of binary mixtures based on the activity coefficients at infinite dilution |
| topic | Intermolecular interactions Excess thermodynamic properties Deep eutectic solvents Selectivity Hydrogen bond donor |
| url | http://www.sciencedirect.com/science/article/pii/S2667312624000245 |
| work_keys_str_mv | AT bakuselekabane thermodynamicevaluationofintermolecularinteractionselectivityinseparationofbinarymixturesbasedontheactivitycoefficientsatinfinitedilution AT balungilegasa thermodynamicevaluationofintermolecularinteractionselectivityinseparationofbinarymixturesbasedontheactivitycoefficientsatinfinitedilution AT nirmaladeenadayalu thermodynamicevaluationofintermolecularinteractionselectivityinseparationofbinarymixturesbasedontheactivitycoefficientsatinfinitedilution |