Catalytic synthesis of dibutyl adipate with nanometer CeO_2 under microwave radiation

Dibutyl adipate was synthesized with adipic acid and nbutyl alcohol,catalyzed by nanopowder CeO2 and accelerated with microwave irradiation.The effects of microwave irradiation power,reaction time,mole ratio of n-butyl alcohol to adipic acid,and the amounts of catalyst on esterification reaction conversion were discussed.Experimental results showed that the esterification yield was more than 98% under the optimal preparation conditions: the mole ratio of n-butyl alcohol to adipic acid is 3.0 ∶1(for 0.05mol of adipic acid),the quantity of catalyst is 2.5% of the mass of the total reactants,and the microwave irradiation time is 10 min with power of 465 W.