聚苯乙烯负载钼(Ⅵ)配合物的合成、表征及其催化环己烯环氧化活性研究

TQ2; Molybdenum (Ⅵ) complex, namely molybdenum dioxobis(2,4-pentanedione) [MoO2(acac)2] used asepoxidation catalyst species, was synthesized and characterized by elemental analysis and infrared spectrum.Polystyrene-supported molybdenum dioxobis(2,4-pentanedione) [MoO2(acac)2] for synthesis of epoxycyclohexanewas prepared by phase transfer catalysis method. Effects of various factors in synthesis of epoxycyclohexane by re-action of cyclohexene and t-BuOOH in the atmosphere of nitrogen catalyzed by polystyrene-supported MoO2 (acac)2were also investigated. Under the following conditions, n(cyclohexene):n(t-BuOOH)＝3.5:1 (based on 0.1 mol of t-BuOOH), volume of solvent ～10 ml, reaction temperature ～80℃, reaction time ～60 min, and mass of molybdenumin the catalyst ～ 2.30 × 10-3 g, the yield of epoxycyclohexane on the basis of t-BuOOH is over 99.5%, and thepurity of epoxycyclohexane is about 99.9% by gas chromatogram(GC) analysis.