New multi-phase catalytic systems based on tin compounds active for vegetable oil transesterificaton reaction

New multi-phase systems based on tin oxide and the complex Sn(3-hydroxy-2-methyl-4-pyrone)2(H2O)2 immobilized in the 1-butil-3-methylimidazolium hexafluorophosphate ionic liquid or supported it in an ion exchange resin, are shown to be active for soybean methanolysis.