TRANSESTERIFICATION OF TRIGLYCERIDES OF VEGETABLE OIL WITH METHANOL UNDER HETEROGENEOUS CATALYSIS CALCIUM AND MAGNESIUM OXIDES
The aim of this work was to study the reactions of methanolysis of triglycerides of vegetable oils (coconut, palm, sunflower and soy) using heterogeneous basic catalysts - calcium and magnesium oxides in mild conditions. Preliminary preparation of catalysts was maintaining calcium hydroxide and magnesium nitrate at various temperatures (600, 800, and 1000 °С) for 1 hour. Calcium oxide exhibits the maximum effectiveness as a heterogeneous catalyst in reactions methanolysis of vegetable oils, obtained by calcining at 800 °С in an amount of 0.5-0.7 % by weight of the oil load. The reaction time is 2-4 hours at 70 °С.