Catalytic synthesis of dibutyl succinate with sodium bisulfate

Dibutyl succinate is synthesized from succinic acid and nbutyl alcohol with sodium bisulfate as catalyst. The effects of factors on esterification ratio are studied. The best reaction conditions are as follows: based on 0.05?mol succinic acid, the molar ratio of nbutyl alcohol to succinic acid is 2.5, mass of catalyst is 0.12?g, the taking water reagent is 5?ml, and the reaction time is 30?min. The esterification ratio is over 98%. The experimental results show that sodium bisulfate is an excellent catalyst for synthesis of dibutyl succinate.