Synthesis of sec-Butyl Acetate by SO_4~(2-)/TiO_2 Cataly st

Solid super strong acid SO 2- 4/TiO 2was applied as a new catalyst to the esterification of acetic acid and sec-butyl alcohol. It has high activity and e xcellent selectivity as well as no corrosion to the facilities. Various reaction parameters such as ratio of alcohol to acid, catalyst amount, reaction time and reaction temperature were carefully studied. The optimum reaction conditions we re: molar ratio of sec-butyl alcohol to acetic acid was 1.4∶1, amount of cataly st was 1.2 g, reaction time was 4 h, reaction temperature was 150 ℃. The conver sion of acetic acid reached 87.71 % and the selectivity of esterification was 100 % under the optimum conditions.