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Citation: GAO Jian, ZHONG Shun-He. Supportedμ-dialkoxo Bridged Dicopper(Ⅱ) Complex Catalysts: Synthesis, Characterization and Catalytic Reactivity[J]. Chinese Journal of Applied Chemistry, ;2000, 17(4): 392-396. shu

Supportedμ-dialkoxo Bridged Dicopper(Ⅱ) Complex Catalysts: Synthesis, Characterization and Catalytic Reactivity

GAO Jian ,
ZHONG Shun-He

1.
School of Chemical Engineering, Tianjin University, Tianjin 300072

Received Date: 25 October 1999
Available Online: 20 March 2000

A silica supportedμ-dialkoxo bridged dicopper(Ⅱ) complex catalyst Cu₂(OEt)₂/SiO₂ was synthesized by the method of grafting metal ions. The bidentate coordination mode of Cu(Ⅱ) ions and the existance of dinuclear structure on the SiO₂ surface were confirmed by complexation titration and spectral analyses. The magnetic moment data of Cu₂(OEt)₂/SiO₂ revealed that there are strong antiferromagnetic couplings between the Cu(Ⅱ) ions on the surface of SiO₂. Chemical absorption towards CO₂ and ethylene oxide(EO) by the catalyst was studied by using molecualr probing-IR technique and CO₂ and EO molecules are supposed to be chemisorbed in the form of briged structure under synergistic actions of Lewis acid and Lewis base sites on the surface. Under the action of the catalyst CO₂ and EO could be catalytically reacted to give ethylene carbonate at 100~120℃.
- binuclear Cu(Ⅱ) complex,
- briging ligand,
- supported catalyst,
- chemisorption,
- ethylene carbonate,
- synthesis
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