The molecular sieves supported TiO 2/SO 2- 4 catalyst was prepared by the liquid phase precipitation,then its preparation conditions were investigated in detail.The results indicated that the pH value of solution was adjusted to 1.8,the mass ratio of TiO 2 to molecular sieves was 0.13∶100,the water in the system must be evaporated slowly at 90℃.And the best active temperature of catalyst was 50℃.The factors that had influence on the esterification of levulinic acid with alcohol were also discussed,the optimum reaction conditions were 5∶100(mass ratio) of catalyst to acid,5∶6(volume ratio) of alcohol to acid,oil bath temperature being kept at 110℃ and suitable reaction time being 1.5h.Under such conditions,the ester yield could be as high as 96.5%.
