Transesterification was carried out in a BERGHOF
high-pressure laboratory reactor, which equipped with temperature
controller, temperature probe, pressure gauge and stirrer
motor (Fig. 1). A certain amount of CaOeLa2O3 mixed metal oxides
catalyst was added to the reaction mixture of 20.0 g of J.
curcas oil, along with the required amount of methanol. The
reactant mixture was then heated to a constant temperature
under maximum agitation. At the end of the experiment, the
catalyst was separated from the product using a centrifuge, and
the reaction mixture was then loaded into a rotary evaporator to
remove excess methanol.