Issue 23, 2017

Organotin(iv) compounds with high catalytic activities and selectivities in the glycerolysis of triacylglycerides

Abstract

Sn(IV) complexes, i.e., di-n-butyltin dichloride (Bu2SnCl2), n-butyltin trichloride (BuSnCl3), di-n-butyltin dilaurate (Bu2SnLau2), n-butyl stannoic acid [BuSnO(OH)], and di-n-butyl-oxo-stannane (Bu2SnO), were tested as catalysts for the glycerolysis of triacylglycerides (TAGs) to produce monoacylglycerols (MAGs) and diacylglycerols (DAGs). Parameters such as the reaction time, temperature, catalyst amount and stirring velocity were evaluated. All complexes were active in converting TAGs to MAGs and DAGs. The reactivity order at 220 °C at a molar ratio of 1/6/0.01 (TAGs/GLY/CAT) was established as: Bu2SnO > Bu2SnLau2 ∼ BuSnO(OH) > Bu2SnCl2 > BuSnCl3. The results were discussed considering the different catalyst compatibilities with the reaction medium and the different mechanisms accepted for (trans)esterification catalysed by organotin(IV) compounds.

Graphical abstract: Organotin(iv) compounds with high catalytic activities and selectivities in the glycerolysis of triacylglycerides

Supplementary files

Article information

Article type
Paper
Submitted
01 Aug 2017
Accepted
19 Oct 2017
First published
20 Oct 2017

Catal. Sci. Technol., 2017,7, 5750-5757

Organotin(IV) compounds with high catalytic activities and selectivities in the glycerolysis of triacylglycerides

M. A. da Silva, A. S. S. dos Santos, T. V. dos Santos, M. R. Meneghetti and S. M. P. Meneghetti, Catal. Sci. Technol., 2017, 7, 5750 DOI: 10.1039/C7CY01559C

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