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• W2941542330 abstract "Esterification of oleic acid (OA) and glycerol (GLY) is studied in the absence and in the presence of the organotin(IV) catalysts (CAT) dibutyltin dichloride (Bu 2 SnCl 2 ), butyltin trichloride (BuSnCl 3 ), dibutyltin dilaurate (Bu 2 SnLau 2 ), butyl stannoic acid (BuSnO(OH)), and di‐ n ‐butyl‐oxo‐stannane (Bu 2 SnO). The reactivity order observed at 180 °C using a OA/GLY/CAT molar ratio of 1/1/0.01 was BuSnCl 3 > Bu 2 SnLau 2 > Bu 2 SnCl 2 > Bu 2 SnO > BuSnO(OH), and a k ap of −0.6237 h −1 is obtained for BuSnCl 3 . The estimated activation energy for the conversion reaction of OA at the above molar ratio using BuSnCl 3 is 60.9 kJ mol −1 , whereas it is 71.3 kJ mol −1 for the reaction performed without the catalyst. Moreover, the most active catalytic systems are those that act as typical and pure Lewis acids, and the least active systems are those that follow the ligand exchange mechanism, suggesting that GLY and AO are involved in the ligand exchange process and may form less reactive catalytic species. Practical Applications : In order to expand the glycerol utilization, the aim of the present work is to systematically investigate the behavior of organotin(IV) compounds bearing different substituents on the metal center (oxo, carboxyl, chloro, and hydroxy groups) in the esterification of OA and GLY without a solvent for obtaining MAGs, DAGs and TAGs. Best results of esterification of AO + GLY are attained at 180 °C using BuSnCl 3 as a catalyst, and the k ap = −0.6237 h −1 for OA conversion is obtained." @default.
• W2941542330 created "2019-05-03" @default.
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• W2941542330 date "2019-05-10" @default.
• W2941542330 modified "2023-10-01" @default.
• W2941542330 title "Evaluation of Esterification of Oleic Acid and Glycerol in the Presence of Organotin(IV) Compounds" @default.
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• W2941542330 doi "https://doi.org/10.1002/ejlt.201900103" @default.
• W2941542330 hasPublicationYear "2019" @default.
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