K_2CO_3/γ-Al_2O_3催化棕榈油和甲醇酯交换反应制备生物柴油  

Transesterification of palm oil with methanol to biodiesel over K_2CO_3/γ-Al_2O_3 catalyst

作　　者：魏瑞平[1] 徐波[1] 肖国民[1] 

机构地区：[1]东南大学化学化工学院,南京211189

出　　处：《生物加工过程》2010年第6期10-14,共5页Chinese Journal of Bioprocess Engineering

基　　金：国家自然科学基金资助项目(20906013);国家高技术研究发展计划(863计划)资助项目(2009AA03Z222;2009AA05Z437)

摘　　要：采用浸渍法制备K2CO3/γ-Al2O3负载型固体碱催化剂,用X线衍射(XRD)和热质量分析法(DSC-TGA)表征催化剂的物化性质,考察催化剂在棕榈油和甲醇酯交换制备生物柴油中的反应性能。结果表明:活性组分已成功负载到载体γ-Al2O3上,且在高温焙烧过程中K2CO3和γ-Al2O3之间产生了相互作用;在K2CO3负载量22.6%、醇油摩尔比12∶1、反应时间3h、催化剂质量分数3%、反应温度65℃的条件下,甲酯产率最高可达91.6%。The supported solid base catalyst K2CO3/γ-Al2O3 was prepared by impregnation and characterized by X-ray diffraction（XRD）and thermogravimetric analysis method（DSC-TGA）.Their catalytic activities were evaluated in the transesterification of palm oil with methanol to biodiesel.Results showed that the active composition was supported on γ-Al2O3,and the interaction between the support and active composition was observed when the catalyst was calcinated at the high temperature.The optimum condition was as follows：the loading of K2CO3 22.6%,the molar ratio of methanol to oil 12∶1,reaction time 3 h,the catalyst concentration 3%,and the reaction temperature 65 ℃.Under these conditions,the transesterification yield of FAME reached 91.6%.

关 键 词：生物柴油 催化 棕榈油 固体碱 酯交换 

分 类 号：TQ645.8[化学工程—精细化工]