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The ionic liquid-catalyzed transesterification of soybean oil with short-chain alcohols by using ultrasound (24kHz, 80W) was studied. We found that, at 60°C under ultrasonic irradiation and a molar ratio of 14:1 methanol/oil, a biodiesel yield in excess of 96% can be achieved in a remarkably short time duration of 20 min or less in comparison to 5h or more using conventional method. Therefore, this...
Biodiesel production from soybean oil with methanol was performed in the presence of a Brønsted acidic ionic liquid-based catalyst under ultrasound irradiation. The influences of various parameters on the transesterification reaction, including the amount of catalyst, the molar ratio of methanol to oil, the temperature and the ultrasound power, were investigated. The optimal conditions were: methanol/oil...
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