碱性离子液体[Bmim]OH催化菜籽油制备生物柴油  

Synthesis of biodiesel from rapeseed oil catalyzed by alkaline ionic liquid [Bmim]OH

作　　者：韩磊[1] 包桂蓉[2] 王华[2] 李明[2] 李一哲[2] 李法社[2] 李秀风[2] 

机构地区：[1]昆明理工大学化学工程学院,昆明650224 [2]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《中国油脂》2010年第8期47-50,共4页China Oils and Fats

基　　金：国家科技支撑计划项目(2007BAD32B03);云南省自然科学基金项目(2006E0022Q)

摘　　要：研究合成了具有碱性功能的离子液体[Bmim]OH,并用其催化菜籽油酯交换反应制备生物柴油,考察了醇油摩尔比、反应温度、反应时间和离子液体用量对酯交换反应的影响及离子液体的稳定性。结果表明:在n(甲醇)∶n(菜籽油)=16∶1,反应温度150℃,反应时间4 h和离子液体用量为菜籽油质量6%的条件下,生物柴油收率可达96.2%,并且该离子液体的稳定性良好,循环使用5次催化性能没有明显降低。The alkaline ionic liquid [Bmim]OH was prepared,and it was used to synthesize biodiesel from rapeseed oil by transesterification.Effects of molar ratio of methanol to rapeseed oil,reaction temperature,reaction time and ionic liquid dosage on the transesterification and stability of the ionic liquid were investigated.The optimum reaction conditions were obtained as follows：molar ratio of methanol to rapeseed oil 16∶1,reaction temperature 150℃,reaction time 4 h,dosage of ionic liquid 6%（based on the mass of rapeseed oil）.The yield of biodiesel reached 96.2% under the optimum conditions.The ionic liquid was stable,and its activity did not decrease after using for 5 times.

关 键 词：生物柴油 碱性离子液体 酯交换 菜籽油 

分 类 号：TE667[石油与天然气工程—油气加工工程]