新型固体碱铝酸钙催化剂用于生物柴油的制备研究  

Study on preparation of biodiesel with new solid base calcium aluminate as catalyst

作　　者：王渤洋[1] 田松江[1] 王景娜[1] 孟永禄[1] 冯日华[1] 李淑芬[1] 

机构地区：[1]天津大学化工学院绿色合成与转化教育部重点实验室,天津300072

出　　处：《现代化工》2009年第S1期127-129,共3页Modern Chemical Industry

基　　金：国家自然科学基金资助项目(20776107)

摘　　要：采用化学合成法制备了铝酸钙固体催化剂,并将其用于菜籽油与甲醇酯交换反应的研究。考察了酯交换反应的条件,实验结果表明,当醇/油摩尔比为15∶1,催化剂质量分数6%,反应温度65℃,搅拌速率270r/min,反应时间3h,甲酯的收率为89.05%。产物和催化剂固液分离简单容易,铝酸钙固体催化剂具有较好的稳定性,连续使用7次,甲酯的收率均在87.00%以上。同时采用Hammett指示剂法、XRD、BET等手段对铝酸钙固体催化剂进行了表征。A new solid base catalyst of calcium aluminate is prepared by chemical synthesis,and it is used to catalyze the transesterification of vegetable oil with methanol to produce biodiesel.The optimal transesterification conditions are obtained as follows:methanol/oil molar ratio of 15∶1,the amount of catalyst of 6 wt%,the reaction temperature of 65℃,the stirring rate of 270 r/min and reaction time of 3 h.The yield of methyl ester can be 89.05% under above conditions.Moreover,the catalyst and the products can be separated easily.The catalyst is used repeatedly for 7 cycles and the yields of methyl ester are all above 87.00%,which sufficiently show its good stability.Calcium aluminate as a solid base catalyst is characterized by Hammett indicator method,XRD,BET.

关 键 词：生物柴油 酯交换反应 铝酸钙 固体碱催化剂 菜籽油 

分 类 号：TE667[石油与天然气工程—油气加工工程]