| Popis: |
A novel environmental friendly catalyst, H4SiW6Mo6O40/SiO2was synthesized by a sol-gel technique, and characterized by FT-IR and XRD. Catalytic application of the catalyst for synthesis of n-butyl methacrylate was investigated. The variation of different reaction parameters were studied by orthogonal design. Under optimized conditions, that is, molar ratio of methacrylic acid to n-butanol is 1:1.7, catalyst dosage is 0.75 %, volume of cyclohexane is 12 mL and the reaction time is 2.5 h, the yield of n-butyl methacrylate reaches 85.3%. The results reveal that the H4SiW6Mo6O40/SiO2O2 catalysis is an execellent catalyst for synthesis of n-butyl methacrylate. Introduction |
