作　　者： ; ; ; ; ;

机构地区： 华南理工大学轻工与食品学院

出　　处： 《广东化工》 2009年第1期3-6,56,共5页

摘　　要： 根据中心组合试验设计原理,通过30个试验,其中有6个样本的中心点,以甲酯含量作为响应值。考察反应时间、催化剂用量、反应温度和醇油摩尔比对碱催化酯交换反应的影响,确定碱催化酯交换反应制备生物柴油的二阶多项式模型。试验结果很好地拟合模型及对99%以上的差异做了解释,优化工艺参数的反应时间为45 min、催化剂用量为1.5%、反应温度50℃、醇油摩尔比为7.5,试验值在95%的置信区间符合预测值。结果表明,RSM优化的模型适合于碱催化酯交换反应制备生物柴油工艺,能够预测不同条件下碱催化酯交换反应得到甲酯含量。 The alkali-catalyzed transesterification of soybean oil for biodiesel production was researched. A second order quadratic equation for biodiesel production was built. The complete design consisted of 30 experimental points including 6 replications of the center points. Response surface and contour were graphed with methyl ester concentration as the response value. Based on the analysis of the response surface plots and their corresponding contour plots, effects of reaction time, KOH concentration, temperature, molar ratio of methanol to oil were explored. The results showed that the highest methyl ester concentration were reached at the reaction time 45 min, KOH concentrationl.5 %, temperature 50 ℃, molar ratio of methanol to oil 7.5. The experimental values agreed with those predicted within at 95 % confdence interval, thus indicating the suitability of RSM in optimizing the alkali-catalyzed transesterification of soybean oil for biodiesel production.

关 键 词： 大豆油 生物柴油 酯交换反应 响应面分析

领　　域： [理学] [理学] [电子电信]