摘要
合成8种磺酸基功能化季铵盐离子液体,测定其腐蚀速率,并以离子液体为催化剂催化油酸与甲醇发生酯化反应制备生物柴油,研究工艺条件对生物柴油产率的影响.结果表明:离子液体[(CH3CH2)3N-(CH2)3SO3H][C7H7O3S]对黄铜、碳钢、不锈钢的腐蚀速率分别为硫酸的1/345,1/38和1/608,酸与甲醇和离子液体的摩尔比为1∶4∶0.05,反应温度为120℃,反应时间为0.5h,则生物柴油产率可达97.83%;催化剂重复使用5次后活性无明显变化,表明其催化油酸制备生物柴油的稳定性高,离子液体可回收重复使用.
Eight kinds of SOs H-functional quaternary ammonium ionic liquids （ILs） were synthesized, corrosion rate of ILs were measured, and the yield of preparation of biodiesel from methanol and oleic acid through catalytic esterification catalyzed by ILs under different process conditions were discussed. The results show that the corrosion rate of [-（CH3CH2）3 N（CH2）3 SOs H][Cn H703 S] is only 1/345,1/38 and 1/608 of brass, carbon steel and stainless steel, com- pared with sulfuric acid. When n（Acid） ： n（MeOH） ： n（IL） =1 ： 4 ： 0. 05, react temperature at 120 ℃, react time was 0.5 hours, the yield of biodiesel could be achieved 97.83%. Ionic liquids were recovered and reused five times, the yield is not obviously decreased, which indicate that the ionic liquids are stable, and could be recoveried and reused.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2013年第6期662-666,共5页
Journal of Huaqiao University(Natural Science)
基金
国家自然科学基金资助项目(20776057
21246008)
福建省自然科学基金资助项目(2011J01048)
关键词
生物柴油
磺酸基
离子液体
油酸
酯化反应
biodiesel
SO3H groups
ionic liquids
oleic acid
esterification
