Vincenzo Benessere, Maria E.Cucciolito, Roberto Esposito, MatteoLega, RosaTurco, FrancescoRuffo, MartinoDi Serio
Fuel Volume 171, 1 May 2016, Pages 1-4 https://doi.org/10.1016/j.fuel.2015.12.040
A homogeneous supported catalyst based on Zn(II) was prepared by anchoring complex [Zn(OAc)2(N,N′-chelate)] on silica, where N,N′-chelate is a suitably functionalised di-imine ligand. The complex was able to promote the esterification and transesterification of acidic vegetable oils at 160 °C within two hours. The catalyst could be also easily recovered and immediately re-cycled.