黄连木油脂基生物柴油的合成及其性能分析

Synthesis and properties analysis of biodiesel from pistacia chinensis bge seed oil

以黄连木油脂为原料,对预酯化和酯交换两步法制备生物柴油的工艺进行了研究。通过正交实验,得出预酯化最佳工艺条件为:醇油摩尔比8∶1、催化剂加入量为0.8%、反应时间为3 h;酯交换最优工艺为:催化剂用量为0.6%、醇油摩尔比6∶1、反应时间为2 h、反应温度为50℃;此条件下制备的生物柴油得率达到92.3%;通过二聚化反应,所得生物柴油的主要性能指标均达到了国家标准GB/T 20828—2007。

The two-step technology of pre-esterification and transesterification method to prepare biodiesel from pistacia chinensis bge seed oil was studied.Through orthogonal experiment,the optimum pre-esterification conditions were obtained:mole ratio of methanol/oil 8∶1,catalyst dosage 0.8%,reaction time 3 hr;the optimum transesterification conditions were obtained:catalyst dosage 0.6%,mole ratio of methanol/oil 6∶1,the reaction time 2 hr,and the reaction temperature 50℃.Under these conditions,the best yield of bi...