Fe3O4/Nafion-H磁性核壳纳米超强酸材料催化地沟油制备生物柴油研究

Study on the Preparation of Biodiesel From Hogwash Oil by Fe3O4/Nafion-H Core-shell Magnetic Nanometer Solid Superacid

首先制备了纳米Fe3O4磁性材料,然后将固体超强酸全氟磺酸树脂(Nafion-H)包覆于纳米磁性材料上制备了磁性核壳纳米超强酸Fe3O4/Nafion-H材料,并将其应用于催化地沟油制备生物柴油,对醇油配料比、反应温度、反应时间和催化剂用量等工艺条件进行了优化。研究发现,在醇油质量比为1、反应温度为55℃、催化剂用量为1 mg/g、反应时间为3h时,生物柴油的产率可达98%,其各项指标均符合甚至优于生物柴油的国家标准。

Fe3O4/Nafion-H core-shell magnetic nanometer solid superacid was successfully prepared,and it was used to catalyze the synthesis of biodiesel from hogwash oil.The effect of mass ratio of methanol to oil,amount of catalyst,reaction temperature and reaction time on the yield of biodiesel was investigated.The study showed that,when the amount of catalyst was 1 mg/g,the ratio of methanol to oil was 1:1,the reaction temperature was 55℃and the reaction time was 3 h,the biodiesel yield reached 98%.