摘要
采用浸渍法制备了活性炭负载KOH固体碱催化剂,考察了它们在三醋酸甘油酯与甲醇酯交换反应中的催化性能,及时间、温度、催化剂用量、醇酯摩尔比等因素对酯交换反应的影响。结果表明,当醇酯比为9∶1,催化剂用量为0.3g(三醋酸甘油酯为0.02mol),KOH浸渍液浓度为20.0wt%,反应温度为65℃,反应1.0h,三醋酸甘油酯转化率可达到94.7%。该工艺操作简单,催化剂可以回收,过程无三废污染。
Transesterification of glycerol triacetate and methanol catalyed by KOH supported on activated carbon was studied. The catalyst was prepared by impregnation and had a high catalysis activity. Effects of some factors on the transesterification were investigated systematically and reaction conditions were optimized. The optimized reaction conditions on the catalyst were: molar ratio of methanol to oil 9:1, the amount of catalyst 0.3g(the amount of glycerol triacetate 0.02mol), the consistency of KOH 20.0wt%, reaction temperature 65 ℃ and reaction time 1.0h, under these conditions the conversion ofbiodiesel reached 94.7%. The new technology featured simplicity, reusable catalyst, zero pollution.
出处
《化工技术与开发》
CAS
2013年第12期11-14,共4页
Technology & Development of Chemical Industry
基金
湖南省教育厅资助科研项目(13C562)
湖南师范大学青年基金资助项目(21101)
关键词
活性炭
负载型
固体碱
催化
酯交换
activated carbon
supported
solid base
catalyze
transesterification