Isoamyl isovalerate has been synthesized by using solid superacid SO 2- 4/TiO 2 as catalyst.The effect of catalyst,activation temperature,ratio of acid to alcohol,reaction time to the productivity of ester was studied...Isoamyl isovalerate has been synthesized by using solid superacid SO 2- 4/TiO 2 as catalyst.The effect of catalyst,activation temperature,ratio of acid to alcohol,reaction time to the productivity of ester was studied.The experimental results show that the yield of ester is 82.9% in optimum conditions,the quality of product is in consistance with GB6778-86 standardization.展开更多
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...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。展开更多
文摘Isoamyl isovalerate has been synthesized by using solid superacid SO 2- 4/TiO 2 as catalyst.The effect of catalyst,activation temperature,ratio of acid to alcohol,reaction time to the productivity of ester was studied.The experimental results show that the yield of ester is 82.9% in optimum conditions,the quality of product is in consistance with GB6778-86 standardization.
文摘以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。
