CAJ | 학술논문

以自制的双-(3-甲基-1-咪唑)亚丁基二硫酸氢盐离子液体为催化合成了异丁酸异戊酯和丁酸异戊酯,考察了反应条件对酯化率的影响。结果表明,异丁酸异戊酯最佳的合成条件为：醇酸摩尔量比1.2∶1,催化剂用量为2.0 g,反应时间3.5 h,酯化率达到95.4%。丁酸异戊酯最佳的合成条件为：醇酸摩尔量比1.6∶1,催化剂用量为2.0 g,反应时间3.5 h,酯化率达到97.9%。反应结束后反应混合物与催化剂自动分层,采用分液的方式即可分离出催化剂,简化了分离过程。离子液体重复使用6次,催化效果无明显降低。
이자제적쌍-(3-갑기-1-미서)아정기이류산경염리자액체위최화합성료이정산이무지화정산이무지,고찰료반응조건대지화솔적영향。결과표명,이정산이무지최가적합성조건위：순산마이량비1.2∶1,최화제용량위2.0 g,반응시간3.5 h,지화솔체도95.4%。정산이무지최가적합성조건위：순산마이량비1.6∶1,최화제용량위2.0 g,반응시간3.5 h,지화솔체도97.9%。반응결속후반응혼합물여최화제자동분층,채용분액적방식즉가분리출최화제,간화료분리과정。리자액체중복사용6차,최화효과무명현강저。
In this issue,bis-(3-methyl-1-imidazole)butylidene double bisulfate(MTEIMHS) was used as a catalyst to synthetize isoamyl isobutyrate and Isoamyl butyrate. The yield of esterification rate under the influ-ence of the reaction conditions was measured. The results showed that under the optimized conditions of isoamyl isobutyrate :n(isoamylol) ∶ n(isobutyric acid)=1. 2 ∶ 1,catalyst used dosage 2. 0g and 3. 5h,the yield of isoamyl isobutyrate reached 95 . 4%. The results showed that under the optimized conditions of Isoamyl buty-rate:n(isoamylol) ∶ n(butyric acid)=1. 6 ∶ 1,catalyst used dosage 2. 0g and 3h,the yield of isoamyl isobu-tyrate reached 97 . 9%. The reaction mixture was immiscible with MTEIMHS and could be speparated simply by separatory funnel after reaction. The ionic liquid catalyst could be reused for 6 times without noticeable lowering of activity.