Catalytic Synthesis of N-butyl Methacrylate with H_4SiW_6Mo_6O_(40)/SiO_2

摘要

A novel environmental friendly catalyst, H_4SiW_6Mo_6O_(40)/SiO_2 was 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 H_4SiW_6Mo_6O_(40)/SiO_2 catalysis is an excellent catalyst for synthesis of n-butyl methacrylate.