Abstract

Ultrasound-assisted ionic liquid ester exchange Preparation of biodiesel, effects of alcohol to oil ratio, reaction time, reaction temperature, the amount of ionic liquid and ultrasonic power factors on the rate of transesterification. The results showed that ultrasound-assisted ionic liquid soybean oil catalyzed preparation of biodiesel process: ultrasonic power 280W, alcohol-oil ratio of 10:1, 10% of the amount of catalyst is the quality of the raw oil, the reaction temperature of 100 ° C, reaction time 50min, biodiesel yield up to 92.5%.

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