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近年来,取代型杂多阴离子的催化性能日益受到重视.Hill,Finke,Neumann分别报道了过渡金属一取代的PW_(11)M,P_2W_(17)M和SiW_(11)Ru具有催化烯烃环氧化的性能.我们发现,三取代的Keggin杂多阴离子也具有这种性质.本文报道了α-和β-[SiW_9O_(37)M_3(H_2O)_3]~(n-)(M=Co~ⅡNi~ⅡCuⅡTi~Ⅳ)杂多阴离子的钾、铯、季铵盐的合成、性质及其催化亚碘酰苯(PhIO)环氧化烯烃的性质.
In recent years, the catalytic performance of substituted heteropolyanions has been paid more and more attention.Hill, Finke and Neumann reported that the transition metal-substituted PW 11 M, P 2 W 17 M and SiW 11 Ru have the catalytic activity of olefin epoxidation We also found that the trisubstituted Keggin heteropolyanions also have this property. We reported the effects of α- and β- [SiW_9O_ (37) M_3 (H_2O) _3] ~ (n -) (M = Co ~ ⅡNi ~ Ⅱ CuⅡTi ~ Ⅳ) Potassium, Cesium and Quaternary Ammonium Salt of Heteropoly Anions and Their Properties for Catalytic Oxidation of Alkylene Oxide with.