Synthesis of Isoamyl Acetateby Rare Earth Solid Superacid Gd~(3+)-SO_4~(2-)/ZrO_2 Catalyst

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.