1-Propyl-4(5)-Methylimidazole Isomers for Temperature Swing Solvent Extraction

Temperature swing solvent extraction (TSSE) utilizes an amine solvent with temperature-dependent water solubility to dissolve water at a lower temperature to concentrate or crystallize the brine and the phases are separated. Then, the water in solvent mixture is heated to reduce water solubility and...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-08, Vol.27 (17), p.5583
Main Authors: Qian, Shuai, Ward, Lauren M., Rakers, Luke S., Weinman, Steven T., Bara, Jason E.
Format: Article
Language:English
Subjects:
Acids
Amines
Desalination
Experiments
heterocycles
Imidazole
Instrument industry
Isomers
molecular design
Phase separation
Ratios
Saline water conversion
Solubility
Solvent extraction
Solvent extraction processes
Solvents
Temperature dependence
temperature swing solvent extraction
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Summary:Temperature swing solvent extraction (TSSE) utilizes an amine solvent with temperature-dependent water solubility to dissolve water at a lower temperature to concentrate or crystallize the brine and the phases are separated. Then, the water in solvent mixture is heated to reduce water solubility and cause phase separation between the solvent and water. The solvent and de-salted water phases are separated, and the regenerated solvent can be recycled. Issues with current TSSE solvents include the high solvent in water solubility and the high solvent volatility. This project used the highly tunable platform molecule imidazole to create two 1-butylimidazole isomers, specifically 1-propyl-4(5)-methylimidazole, to test their effectiveness for TSSE. The imidazoles take in more water than their current state-of-the-art counterparts, but do not desalinate the product water and dissolve in water at higher concentrations. Thus, while imidazoles make intriguing candidates for TSSE, further work is needed to understand how to design imidazoles that will be useful for TSSE applications.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27175583