实验发现,十二钼磷酸对H_2O_2分解几乎无活性,而其盐类(Fe~(3+)、Cu~(2+)、Co~(2+)、Mn~(2+))则都有很好的活性,认为活性种是杂多酸盐的抗衡阳离子。如在杂多酸阴离子中引入V,部份的取代钼,不仅催化剂活性随V的取代数有规律地增加,而且,动力学曲线具有S-型特征,表明反应中活性中心-阴离子中的钒和底物作用生成活性中间体。 It was found that dodecamethylenephosphoric acid had almost no activity on the decomposition of H 2 O 2, while its salts (Fe 3+, Cu 2 +, Co 2 +, Mn 2+) Very good activity, that the active species is heteropoly acid salt countercation. Such as the introduction of V, part of the substituted molybdenum in the heteropolyacid anion, not only the catalytic activity regularly increases with the V substitution number, and kinetic curve with S-type characteristics, indicating that the active center of the reaction - the anion of vanadium And the role of substrates to generate active intermediates.