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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

章亚东; 高晓蕾; 陈霞; 王朝进; 蒋登高   

  1. College of Chemical Engineering, Zhengzhou University, Zhengzhou 450002, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-06-28 发布日期:2003-06-28
  • 通讯作者: 章亚东

Study on Synthesis, Characterization and Catalytic Activity of Polystyrene-supported Mo (Ⅵ
) Complex in Epoxidation of Cyclohexene

ZHANG Yadong; GAO Xiaolei; CHEN Xia; WANG Chaojin; JIANG Denggao   

  1. College of Chemical Engineering, Zhengzhou University, Zhengzhou 450002, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-06-28 Published:2003-06-28
  • Contact: ZHANG Yadong

摘要: 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.

关键词: molybdenum dioxobis(2;4-pentanedione);cyclohexene;epoxycyclohexane;polystyrene

Abstract: 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.

Key words: molybdenum dioxobis(2, 4-pentanedione), cyclohexene, epoxycyclohexane, polystyrene