固体超强酸SO_4^(2-)/Fe_2O_3/ZnO/ZrO_2的制备及其催化合成乙酸异戊酯

Synthesis of isoamyl acetate with composite solid super acid catalyst

以复合固体超强酸SO42-/Fe2O3/ZnO/ZrO2为催化剂,进行异戊醇和冰乙酸的酯化反应,合成乙酸异戊酯,考察醇酸摩尔配比、反应温度、反应时间、不同焙烧温度催化剂以及催化剂用量等条件对酯化率的影响。结果表明,合成乙酸异戊酯适宜的反应条件是:原料异戊醇与冰乙酸的摩尔配比为2∶1,催化剂用量为冰乙酸质量的7%,焙烧温度650℃,120℃反应50 min。

SO4^（2-）/Fe2O3/ZnO/ZrO2 Composite solid superacid catalyst has been prepared and applied. Isoamyl acetate was synthesized from acetic acid and isopentyl alcohol in the presence of this composite solid superacid. The influence of initial rate with molar ratio of reagents, the reaction temperature, and the reaction time, the amount of catalyst and different calcinations temperature of catalyst were studied. The results showed that the appropriate conditions of synthesis of isoamyl acetate as follows：reaction time was 50 min at 120℃ ,the mole ratio of isoamyl alcohol to acetic acid was 2：1 ,the catalyst was equal to 7% by the mass of acetic acid, the calcinated temperature was 650℃.