【摘要】 采用大豆油和甲醇为原料,在超声作用下,对提高油脂脂肪酸甲酯化度进行研究,考察了超声的功率、超声的频率、反应时间、催化剂用量、甲醇与大豆油的摩尔比等因素对油脂脂肪酸甲酯化的影响。通过单因素实验得出最佳反应条件为:超声功率300 W,超声频率28 kHz,反应时间10 min,催化剂用量1.0%,甲醇与大豆油摩尔比12∶1。在此条件下,脂肪酸甲酯转化率达到90.54%。研究结果表明,当反应5 min时就能使脂肪酸甲酯的转化率达到85%以上,反应时间从静态条件下的1 h缩短到5 min。更多还原

【Abstract】 Biodiesel was prepared by the methanolysis of soybean oil under the ultrasonic.The operational parameters affecting the conversion of triglycride such as the ultrasonic power,ultrasonic frequency,reaction time,the amount of catalyst,molar ratio of methanol to soybean oil,were discussed.It found that under the optimum conditions of ultrasonic power 300 W,ultrasonic frequency 28 kHz,reaction time 10 min,dosage of catalyst 1.0% and molar ratio of methanol to soybean oil 12∶1,the conversion rate of fatty acids methyl esters was 90.54%.At the same time,the result indicated that after reaction 5 min,the conversion rate of fatty acids methyl esters could be over 85%.Compared with no ultrasonic,the reaction time reduced from 1 h to 5 min.更多还原