Synthesis of Biodiesel via Base Catalytic Transesterification

Preparation of biodiesel via base catalytic transesterification from rapeseed oil and methanol was discussed in this paper.It was found that the products consisted of methyl oleate,methyl 9-cetoleic acid,methyl palmitate,methyl stearate,methyl 9-eicosenoic acid and methyl linoleate.The experimental results also showed that in the presence of 1.0% NaOH solution, molar ratio of methanol to rapeseed oil 8∶1 and stirring strongly,94% conversion of rapeseed oil could be achieved at 70℃ within 2~3 hours.