Study on Synthesis of Levulinic Acid with Solid Acid SO42-/TiO2-ZrO2 as Catalyst
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
Levulinic acid was prepared by solid SO42-/TiO2-ZrO2 catalyst from sucrose in water. The influence of impregnation concentration of sulfuric acid and calcinations temperature on catalyst activity was studied. The effect of different reaction conditions and catalyst reuse cycle on levulinic acid yield was investigated. The surfaces structure and acidity changes of the fresh and used catalysts were characterized by XRD and NH3-TPD. Experimental results indicated that the optimal catalyst could be obtained under the following conditions: 1mol/L impregnation concentration of sulfuric acid, 550 ℃ of calcination temperature and 3 h of calcinations time. And the yield of levulinic acid was about 50.0% (molar percent) under the optimum conditions: amount of catalyst 1g, reaction temperature 190℃ and reaction time 1h. The recovered SO42-/TiO2-ZrO2 catalyst after calcination was found to remain high catalytic activity after being reused for several times.
