论文部分内容阅读
以SO_3H-功能化离子液体为催化剂,以异戊酸和异戊醇为原料,考察醇酸物质的量比、催化剂用量、带水剂用量及不同反应时间对酯化反应的影响,并通过响应面分析法优化反应工艺。试验结果表明,离子液体[(CH_3CH_2)_3N(CH_2)_3SO_3H]HSO_4具有最好的催化活性;优化后异戊酸异戊酯最佳反应条件为:n(异戊醇):n(异戊酸)=1.8,离子液体剂量6%,反应时间1.5 h,带水剂环己烷量10 m L,此反应条件下,异戊酸异戊酯的酯化率为97.2%,与模型预测值基本相符。
Using SO_3H-functional ionic liquid as catalyst and isovaleric acid and isoamyl alcohol as raw materials, the influences of the amount of alkyd, the amount of catalyst, the amount of water-carrying agent and different reaction time on the esterification reaction were investigated. Surface analysis method to optimize the reaction process. The results showed that the best catalytic activity of [(CH_3CH_2) _3N (CH_2) _3SO_3H] HSO_4 was obtained. The optimum reaction conditions of isopentyl isovalerate were as follows: n (isoamyl alcohol): n ) = 1.8, the dosage of ionic liquid is 6%, the reaction time is 1.5 h and the amount of cyclohexane of water-carrying agent is 10 m L. The esterification rate of isopentyl isovalerate under this reaction is 97.2% Match.