双位点磺酸功能化离子液体催化合成生物柴油  

Catalytic synthesis of biodiesel by double-site sulfonic acid functionalized ionic liquid

作　　者：吴承明 马泓坤 孔德权 罗妍琳 蒋新月 WU Cheng-ming;MA Hong-kun;KONG De-quan;LUO Yan-lin;JIANG Xin-yue(School of Chemistry and Environment Engineering,Hanjiang Normal University,Shiyan 442000,China;Shiyan Key Laboratory of Biological Resources and Eco-environmental Protection,Hanjiang Normal University,Shiyan 442000,China)

机构地区：[1]汉江师范学院化学与环境工程学院,湖北十堰442000 [2]汉江师范学院生物资源与生态环境保护十堰市重点实验室,湖北十堰442000

出　　处：《化学工程师》2024年第8期1-4,共4页Chemical Engineer

基　　金：汉江师范学院科研基金资助课题(2024A10);湖北省教育厅科学研究计划中青年人才项目(Q20193101)。

摘　　要：基于1,2-双(二苯基膦)乙烷,采用两步法合成了一种双位点磺酸功能化季鏻盐离子液体([DPPE-PS][p-TSA]),并用于催化月桂酸和乙醇反应制备生物柴油。采用单因素实验法对反应条件进行了优化,并考察了不同反应条件对月桂酸转化率的影响规律。实验结果表明,在反应温度为80℃、催化剂用量为4.0wt%(基于月桂酸质量)、醇/酸比为8∶1、反应时间为4h的最佳实验条件下,月桂酸转化率可高达94.7%,并且[DPPE-PS][p-TSA]离子液体经过5次重复使用后,催化活性未出现明显降低。A double-site sulfonic acid functionalized ionic liquids [DPPE-PS][p-TSA]based on 1,2-Bis(diphenylphosphino)ethane were prepared,and used for catalyzing the esterification of lauric acid and ethanol to produce biodiesel.According to the single factor experimental method,the effects of reaction conditions on the conversion of lauric acid were also investigated.Under the optimized reaction conditions:catalyst amount of 4wt%of lauric acid quality,alcohol/acid molar ratio of 8 ∶ 1,and reaction time of 4h at a temperature of 80℃,the conversion of lauric acid was up to 94.7%.Furthermore,the [DPPE-PS][p-TSA]ionic liquid still maintained good catalytic activity after repeated use for 5 times.

关 键 词：离子液体 酯化反应 生物柴油 月桂酸 

分 类 号：TQ517.2[化学工程]