羟基聚醚官能化杂多酸聚离子液体催化的连续酯化氧化合成环氧油酸甲酯  

Synthesis of epoxy methyl oleate catalyzed by hydroxyl functionalized heteropolyacid based poly ionic liquid via continuous esterification and epoxidation

作　　者：张祥明 张晓玲 邹丽欣 李心忠[1,2,3,4] ZHANG Xiang-ming;ZHANG Xiao-ling;ZOU Li-xin;LI Xin-zhong(School of Materials and Chemical Engineering,Minjiang University,Fuzhou 350108,China;Green Materials and Chemical Engineering Research Centre of Fujian Province University,Fuzhou 350108,China;Fujian Engineering Research Center of Chinese Lacquer Material,Fuzhou 350108,China;Fujian Key Laboratory of Functional Marine Sensing Materials Research,Fuzhou 350108,China)

机构地区：[1]闽江学院材料与化学工程学院,福建福州350108 [2]绿色材料与化工福建省高校工程研究中心,福建福州350108 [3]福建省中国漆新型材料工程研究中心,福建福州350108 [4]福建省海洋传感功能材料重点实验室,福建福州350108

出　　处：《化学研究与应用》2023年第4期826-833,共8页Chemical Research and Application

基　　金：福建省自然科学基金项目(2022J011115)资助;福州市科技计划项目(2021-S-087)资助;闽江学院校长基金项目(103952021021)资助。

摘　　要：以乙二醇、环氧氯丙烷、三甲胺、三乙胺、三乙醇胺、H_(4)SiW_(12)O_(40)、H_(3)PW_(12)O_(40)为起始原料,经开环聚合、季铵化、分子自组装,构建了系列羟基官能化聚醚杂多酸聚离子液体HPIL^(-1)~HPIL-6。聚离子液体兼具两亲活性、酸催化活性和氧化催化活性,以其为非均相催化剂,实现了油酸连续酯化、环氧化合成环氧油酸甲酯。当原料比n(甲醇)∶n(H_(2)O_(2))∶n(油酸)∶n(聚离子液体)=500∶120∶40∶1,室温下酯化反应2.5h,65℃下环氧化反应4h,环氧油酸甲酯产率92%。聚离子液体经离心分离、溶剂洗涤、真空干燥即可再生循环使用,循环使用5次,催化活性基本保持不变。A series of hydroxyl functionalized heteropoly acid based poly ionic liquids were synthesized using ethylene glycol,epichlorohydrin,trimethylamine,triethylamine triethanolamine,H_(4)SiW_(12)O_(40)and H_(3)PW_(12)O_(40)as starting materials via ring-opening polymerization,quaternization and self-assembly in water.These compounds exhibited surface activity,oxidative catalytic activity,which acted as efficient recyclable catalyst realized the continuous esterification and epoxidation of oleic acid with methanol at room temperature and 30%H_(2)O_(2)under 65℃successively.When the mole ratio of methanol,H_(2)O_(2),oleic acid and poly ionic liquids was 500∶120∶40∶1,esterification under room temperature for 2.5h,then epoxidation at 65℃for 4h,the epoxy methyl oleate was obtained with yield of 92%.Poly ionic liquids could be recovered and reused by simply treatment,there were no significant decline in yield after recycling for five times.

关 键 词：聚离子液体 杂多酸 酯化 环氧化 环氧油酸甲酯 

分 类 号：O621.4[理学—有机化学]