Preparation of levulinic acid from sucrose over La solid acid catalyst
Abstract: A new type of rare earth solid superacid catalyst S2O82-/TiO2-La2O3 was prepared by The Sol-gel method in this paper. A series of catalysts were prepared by single factor test method with changing the La content, temperature and time of calcination. The specific surface area and the surface structure of the Catalyst were characterized by means of BET adsorption and infrared spectroscopy. The levulinic acid were prepared from Sucrose by catalytic and hydrolysis under certain conditions, and the activity of the catalytic was analysed by liquid chromatography. The results of the experiment show that：The Catalyst haved the highest activity when the La content of 1.2%, calcination temperature of 750 ℃ and the calcination time of 3 hours. Then, The highest yield of levulinic acid had reached when the reaction temperature was 160 ℃, reaction time was 24 hours, amount of catalyst was 0.3g.
