新型固体碱催化剂及其催化制备生物柴油的工艺研究  

Study on preparation technology of solid base catalyst and biodiesel

作　　者：王江林[1] 敬成君[2] 谭睿[1] 

机构地区：[1]西南交通大学生物工程学院,四川成都610031 [2]四川大学建环学院,四川成都610065

出　　处：《华北电力大学学报（自然科学版）》2009年第3期50-54,共5页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50876092,50576079)

摘　　要：研究了等体积浸渍法制备负载型N/M固体碱催化剂及催化剂催化制备生物柴油的工艺。运用扫描电镜SEM和晶体衍射仪XRD对催化剂进行表征,结合生物柴油转化率,得出催化剂制备最佳工艺为:N负载量10%,煅烧温度600℃,煅烧时间5h。采用响应曲面法中的Box-Behnken模式对影响生物柴油转化率的4个主要因素(反应温度、催化剂用量、反应时间、醇油质量比)进行优化,建立生物柴油转化率的二次多项回归模型,并对回归方程系数进行显著性检验和方差分析,结果表明模型有效可靠,且得出新型固体碱催化制备生物柴油的最佳工艺为:反应温度60℃、催化剂用量为油质量的3%、反应时间5h、醇油质量比2∶5。模型预测最高生物柴油转换率92.43%,与实测值吻合。The technology of N/M solid base catalyst prepared by equal volume impregnation and biodiesel prepared from rapeseed oil was studied. By using SEM and XRD to characterize the solid base catalyst and combining with biodiesel conversion rate, it was obtained that the optimum conditions for catalyst preparation were： 10% of N dosage on M, 600℃ of calcination temperature, 5h of calcination time. And by optimizing the effect of four factors （temperature, catalyst dosage, reaction time, mass ratio of methanol to oil） on conversion rate of biodiesel through Box- Behnken mode of response surface methodology, a mathematical model for the conversion rate of biodiesel was built. The analysis of significance and variance of the model showed that the model was valid and reliable. The optimum technology for the preparation of biodiesel catalyzed by solid base catalyst was： 60℃; of reaction temperature, 3% of quality ratio of catalyst to oil, 5 h of reaction time and 2 ： 5 of mass ratio of methanol to oil. The predicted highest conversion rate of biodiesel was 92.43%, which was in consistent with the measured value.

关 键 词：生物柴油 固体碱催化剂 响应曲面法 

分 类 号：TQ517.2[化学工程]