KOH/SBA-15催化大豆油酯交换反应制备生物柴油

通过后合成法制备了KOH/SBA-15负载型固体碱催化剂，以大豆油和甲醇为原料，进行酯交换反应合成生物柴油。考察醇油比、反应温度、反应时间、活性组分负载量和催化剂用量等因素对生物柴油收率的影响。结果表明，当醇油摩尔比为16：1、反应温度为60 ℃、反应时间为8 h、活性组分KOH负载量（w）为15 %、催化剂用量为原料油质量的5％条件下，生物柴油收率为85.32 %。

PREPARATION OF BIODIESEL BY TRANSESTERIFICATION OF SOYBEAN OIL OVER KOH/SBA-15 CATALYST

A solid base catalyst, KOH/SBA-15, was post-synthesized and used in the synthesis of biodiesel by transesterification of soybean oil and methanol. The influence of reaction conditions, such as molar ratio of methanol to oil (M/O), reaction temperature, reaction time, active component content and catalyst dosage on the biodiesel yield was studied. Results showed that under the conditions of M/O molar ratio of 16, a reaction temperature of 60 ℃, a reaction time of 8 h, an active component content of 15 % and a catalyst dosage of 5 % (based on oil), the yield of biodiesel reached 85.32 %.