文档介绍：现代食品科技 Modern Food Science and Technology 2012, ,

劣质食用油碱催化酯交换制备生物柴油初探

何平伟,邓放明
(湖南农业大学食品科学技术学院,湖南长沙 410128)
摘要:以市售的劣质食用油为原料、KOH 为催化剂酯交换反应制备生物柴油,研究了反应条件温度、时间、醇油物质的量之比
和 KOH 的用量对生物柴油得率的影响。结果表明:随着温度的增加,生物柴油得率先增加后降低,反应温度为 65 ℃时,得率最高,
达 %;反应 h 后,生物柴油得率达 %,继续延长反应时间,得率增加缓慢;醇油物质的量之比对得率的增加影响较小,
过大还会降低得率;KOH 用量为 %,生物柴油得率最高,可达 %,继续增加 KOH 用量,得率降低。通过单因素实验和正交
实验分析,得出了制备生物柴油的最佳条件:反应温度 65 ℃、反应时间 2 h、醇油物质的量之比为 6:1、KOH 用量为 %。
关键词:劣质食用油;酯交换;生物柴油
文章篇号:1673-9078(2012)6-684-687
Preliminary Study on Biodiesel Production via KOH Catalyzed
Transesterification of Inferior Editable Oil
HE Ping-wei, DENG Fang-ming
(College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China)
Abstract: KOH catalyzed transesterification of inferior cooking oil was investigated for biodiesel production. The results showed that
biodiesel production yield was increased at first and then decreased with increasing the reaction temperature, which reached the maximum value
% at 65℃. The biodiesel yield can reached % when reaction time was of . Further increasing the reaction time above h led to
only slightly increase in the biodiesel yield. Ratio of methanol to oil has a slight effect on biodiesel production and the optimal KOH dosage was
%, with which % of biodiesel yield can be obtained.
Key