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

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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

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Publication details

The article was received on 01 Aug 2017, accepted on 19 Oct 2017 and first published on 20 Oct 2017


Article type: Paper
DOI: 10.1039/C7CY01559C
Citation: Catal. Sci. Technol., 2017, Advance Article
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    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, Advance Article , DOI: 10.1039/C7CY01559C

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