摘要
研究了大豆油与甲醇的低功率密度超声波酯交换反应。在较低功率密度条件下,得到了性能指标符合要求的生物柴油。大豆油与甲醇的物质的量之比为1∶6,氢氧化钾与大豆油的质量比为0.01∶1,反应温度30℃,根据反应规模的不同,超声波反应时间为20～60min,由折光指数换算的反应转化率为84.81%和85.85%。本研究最低超声波功率密度约为0.032W/cm3,远远低于传统的0.5W/cm3。
Low-power-density ultrasonic transesterification of soybean oil with methanol was studied. It was thought that biodiesel with good quality could be obtained under the condition of lower power density of ultrasound. Molar ratio of soybean oil to methanol was 1 ： 6. Mass ratio of potassium hydroxide to soybean oil was O. 01 ： 1. Reaction temperature was about 30 %. Reaction time under ultrasound was 20-60 min according to the reaction scale. Conversion of transesterification calculated from refractive index of biodiesel was 84.81%-85.85 %. The lowest power density used in this study was about 0.032 W/cm^3 which is far lower than that of the traditional 0.5 W/cm^3.
出处
《林产化学与工业》
EI
CAS
CSCD
2008年第6期15-19,共5页
Chemistry and Industry of Forest Products
基金
江苏省自然科学基金(BK2006012)
中国林业科学研究院基金重点项目(2005-Z-03)
关键词
超声波
低功率密度
酯交换反应
大豆油
ultrasound
low-power-density
transesterification
soybean oil
