Effect of ultrasound on ester hydrolysis in aqueous ethanol.
Kinetics of the acid-catalyzed hydrolysis of ethyl acetate in ethanol-water binary solutions were investigated without sonication and under ultrasound at 22 kHz. Rate enhancements by 1.03-2.4 times were found with a minimum at 18 wt.% and a maximum at 45 wt.% of ethanol. The results suggest that ultrasonic acceleration of the reaction may be interrelated to the perturbation of the molecular structure of the binary solvent.
Tuulmets
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Institute of Organic Chemistry, University of Tartu, 2 Jakobi Street, 51014 Tartu, Estonia. tuulmets@chem.ut.ee
Salmar
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