低功率密度超声波用于大豆油酯交换反应研究  

Study on Transesterification of Soybean Oil Using Low-power-density Ultrasound

作　　者：薄采颖[1,2] 毕良武[1,2] 赵振东[1,2] 陈元平 李冬梅[1,2] 古研[1,2] 王婧[1,2] 张秋格[1,2] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]国家林业局林产化学工程重点开放性实验室,江苏南京210042 [3]杭州成功超声设备有限公司,浙江富阳311400

出　　处：《林产化学与工业》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)

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.

关 键 词：超声波 低功率密度 酯交换反应 大豆油 

分 类 号：TQ351.0[化学工程]