Starchevskyi R. Transesterification of triglycerides in the presence of heterogeneous catalysts

Based on achieved triglycerides conversion, the rows of various metal oxides activity, as catalysts for the transesterification of vegetable oils with ethanol and butan-1-ol, have been proposed. The optimal conditions for triglycerides transesterification reaction with ethanol and butan-1-ol were established. The possibility of using ethyl alcohol, which contains a small fraction of water, in the process of sunflower oil transesterification has been investigated. The possibility of using waste sunflower oil to obtain fatty acids butyl esters by transesterification of oil in the presence of butan-1-ol and oxides of zinc and nickel (II) as catalysts was shown. The possibility of re-using zinc and nickel (II) oxides for the used sunflower oil transesterification with butan-1-ol has been investigated. It was found that metal oxides, in addition to transesterification, also catalyze side reaction of oleic acid esterification with butan-1-ol. The kinetic laws of this process have been investigated under stationary conditions in the presence of heterogeneous catalysts – zinc and nickel (II) oxides. The dependence of transesterification reaction indicators on the action of ultrasonic radiation on the reaction mixture in the presence of various metals oxides has been investigated.