Abstract

Biodiesel was synthesized starting soybean oil and methanol using K2CO3 and phase-transfer catalysis TBAB. It was studied that the yield of biodiesel can be changed with reaction factors such as the kind and the amount of phase-transfer catalysis, the amount of K2CO3, reaction time, molar ratio between methanol and soybean oil, reaction temperature. The results show that the reaction conditions are as following: mass ratio of TBAB to soybean oil weight 0.6%, mass ratio of K2CO3 to soybean oil weight 1.5%, molar ratio between methanol and soybean oil 6∶1, reaction time 20 min, reaction temperature 40 °C. The yield of biodiesel reached 95% under the optimum reaction conditions.

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