【摘要】 以乙酸、异戊醇为原料,固体超强酸Gd3+-SO2-4/ZrO2为催化剂,催化合成乙酸异戊酯。确定了固体超强酸的最佳焙烧温度,进行了固体超强酸Gd3+-SO2-4/ZrO2和SO2-4/ZrO2催化活性对比实验,以及考察了原料酸醇比、反应时间、催化剂用量对酯化率的影响。实验结果表明:反应温度110~115℃,催化剂用量2 g,n(异戊醇)∶n(乙酸)=2.0∶1.0,反应时间2 h,酯化率可达88.4%,催化剂重复使用效果明显,加Gd3+的固体超强酸的催化活性明显增强。更多还原

【Abstract】 Isoamyl acetate was obtained by the reaction of acetic acid with isoamyl alcohol,with rare earth solid superacid Gd3 +-SO2-4/ZrO2 as the reactive catalyst was described.The esterification reaction was performed to confirm the optimal conditions of preparation.The experiments were compared with the rare earth solid superacid Gd3 +-SO2-4/ZrO2 catalyst,and the ratio of isoamyl alcohol was investigated with acetic acid,reacted time,the mass of catalyst influences on the catalytic activity.The results showed that isoamyl alcohol acetate was prepared by reaction at 110 ~115 ℃ for 2 h with n( isoamyl alcohol) ∶n( acetic acid) = 2.0∶1.0,and( catalyst) = 2 g,the conversion of acetic acid amounts was 88.4%,catalyst was used repeatedly but still had high catalytic activity,and catalytic activity of the solid super acid which added Gd3 +improved apparently.更多还原