有机-无机杂多酸盐催化合成油酸甲酯  

Study on Synthesis of Methyl Oleate Catalyzed by Organic-Inorganic Heteropolysalts

作　　者：赵宇霄 王璐璐[1] ZHAO Yu-xiao;WANG Lu-lu(School of Petroleum and Chemical Technology,Liaoning Shihua University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《辽宁化工》2021年第4期437-441,共5页Liaoning Chemical Industry

基　　金：辽宁省教育厅科学研究一般项目(项目编号:20180550695);辽宁省大学生创新创业训练计划项目(项目编号:201910148046)。

摘　　要：通过两步法合成了有机无机杂多酸盐:N-甲基-N-丁基吗啡啉磷钨酸盐([Nbmm]3PW12O40),并采用1H-NMR、红外光谱和元素分析对其结构进行表征。以油酸和甲醇进行酯化反应过程为模型反应,考察了[Nbmm]3PW12O40的催化活性。结果表明,当甲醇∶油酸=15∶1(物质的量比),催化剂用量为油酸和甲醇总质量的5%,反应时间6 h,反应温度100℃时,油酸转化率为91.5%(质量分数),且经气质联用仪确认酯化产物几乎均为油酸甲酯。重复性实验表明,该杂多酸盐经回收、真空干燥,重复使用6次后催化活性没有明显降低。A new organic-inorganic heteropolysalt ([Nbmm]3PW12O40) was synthesized by Two-step method,and it was characterized by 1H-NMR,FT-IR and elemental analysis.In addition,the catalytic activity of[Nbmm]3PW12O40 for the esterification reaction of oleic acid with methanol was investigated.The results showed that under the optimized conditions of n(methanol)∶n(oleic acid)=15∶1,catalyst dosage 5%,reaction temperature 100℃and reaction time 6 h,the conversion rate of oleic acid was up to 91.5%,and it was confirmed by GC-MS that almost all esterified products were methyl oleate.[Nbmm]3PW12O40 could be reused more than 6 times without significant decrease in activity after regeneration by drying under vacuum.

关 键 词：磷钨酸 有机-无机杂多酸盐 油酸甲酯 N-甲基吗啡啉 

分 类 号：TQ517.4[化学工程]