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合成了新的含三过氧铌的钨磷杂多酸盐:M4H2[PW9(NbO2)3O37]M=Me4N+(TMA)Et4N+(TEA),Bu4N+(TBA),He4N+(THA);三铌取代的钨磷酸盐:M6[PW9Nb3O40]xH2O(M=TBA和K+).IR和UV光谱、极谱和循环伏安,XPS,I-—滴定证明[PW9(NbO2)3O37]6-中有Nb基存在.氧化催化实验表明:过氧杂多配合物的催化活性远高于非过氧杂多配合物.
A new tungstophosphoric acid tungstophosphoric acid heteropolyacid salt was synthesized: M4H2 [PW9 (NbO2) 3O37] M = Me4N + (TMA) Et4N + (TEA), Bu4N + (TBA) and He4N + Tungstophosphate: M6 [PW9Nb3O40] xH2O (M = TBA and K +). IR and UV spectra, polarography and cyclic voltammetry, XPS, I-titration demonstrated the presence of Nb groups in [PW9 (NbO2) 3O37] 6-. Oxidation catalytic experiments show that: peroxo heteropoly complexes catalytic activity is much higher than non-peroxo heteropoly complexes.