CAJ | 학술논문

离子液体［Hnhp］HSO4催化油酸酯化反应的工艺条件优化
리자액체［Hnhp］HSO4최화유산지화반응적공예조건우화
Synthesis of Methyl Oleate Catalyzed by Br￠nsted Acid Ionic Liquid([Hnhp]HSO4)

万方数据

粮油加工（电子版）糧油加工（電子版） 량유가공（전자판）
Cereals and Oils Processing（Electronic Version）
2015年 5期 39-42 ,共4页

张啸%韩本勇%张无敌%陈玉保%尹芳%刘士清%赵兴玲%柳静%许玲%王昌梅%杨红

장소%한본용%장무활%진옥보%윤방%류사청%조흥령%류정%허령%왕창매%양홍

Br￠nsted酸性离子液体%酯化%油酸甲酯%优化 Br￠nsted痠性離子液體%酯化%油痠甲酯%優化
Br￠nsted산성리자액체%지화%유산갑지%우화
Br￠nsted acidic ionic liquid%esterification%methyl oleate%optimization

离子液体作为环境友好的化学试剂，具有许多优点，如无腐蚀性、无毒、不挥发、抗氧化、液程范围宽、具有良好的稳定性和催化活性，在许多化学反应过程中得到了广泛应用。本文合成了Br￠nsted酸性离子液体2-吡咯烷酮硫酸氢盐（[Hnhp]HSO4），并用作催化剂催化合成油酸甲酯。研究了离子液体催化剂用量、醇酸摩尔比、反应温度和反应时间对油酸酯化反应的影响，同时考察了离子液体的重复利用性能。结果表明：在醇酸摩尔比为6∶1、反应温度70℃、反应时间3h和催化剂（[Hnhp]HSO4）用量为油酸重的12.5%时，酯化率达97.54。反应结束后离子液体与酯化产物自动分成两相，而且离子液体（[Hnhp]HSO4）重复使用5次，仍有较高的催化活性。
리자액체작위배경우호적화학시제，구유허다우점，여무부식성、무독、불휘발、항양화、액정범위관、구유량호적은정성화최화활성，재허다화학반응과정중득도료엄범응용。본문합성료Br￠nsted산성리자액체2-필각완동류산경염（[Hnhp]HSO4），병용작최화제최화합성유산갑지。연구료리자액체최화제용량、순산마이비、반응온도화반응시간대유산지화반응적영향，동시고찰료리자액체적중복이용성능。결과표명：재순산마이비위6∶1、반응온도70℃、반응시간3h화최화제（[Hnhp]HSO4）용량위유산중적12.5%시，지화솔체97.54。반응결속후리자액체여지화산물자동분성량상，이차리자액체（[Hnhp]HSO4）중복사용5차，잉유교고적최화활성。
Ionic liquids as environmentally benign chemical solvent, that had been used in diverse chemical reactions, because they have many advantages, such as non-corrosion, non-toxic, non-volatile, anti-oxidize, wide temperature range, good stability andhigh catalytic activity. One kinds of Br￠nsted ionic liquid 2-pyrrolidonium hydrogen sulfate ([Hnhp]HSO4) were prepared. Synthesis of methyl oleate from oleic acid catalyzed by the ionic liquid was studied. Effects of ionic liquid dosage, molar ratio between methanol and oleic acid, reaction temperature and reaction time on esterification reaction and stability of the ionic liquid were investigated. Optimal esterification condition was obtained as follows∶n (methanol) ∶n (oleic acid) =6∶1, reaction temperature 70℃, reaction time 2h and dosage of ionic liquid=5%of oleic acid weight. Yield of methyl oleate reached 97.41%without removal of water during the esterification. Ionic liquid was stable and could be repeatedly used.