过渡元素杂多配合物的合成的稳定性的研究

STUDIES ON THE SYNTHESIS AND STABILITY OF MOLYBDOTUNGSTOSILICIC HETEROPOLY COMPLEXES WITH TRANSITION ELEMENTS

本文首次报道了具有Ｋｅｇｇｉｎ结构过渡元素钼钨硅四元杂多配合物的合成方法，利用ＴＧ－ＤＴＡ、变温ＩＲ光谱、Ｘ一射线粉末衍射和水溶性实验对配合物的热稳定性进行了研究。用酸碱滴定研究新配合物水溶液稳定性表明：配合物在水溶液中稳定存在的ＰＨ值范围为２．４－８．４，且随配合物中钨的含量增加，稳定存在的ＰＨ值增高。

The synthesis of molybdotungstosilicic heteropoly complexes with transition elments of the Keggin structure were reported and their thermostability were studied by TG-DTA, IR spectra X-ray diffraction and solubility expennent. The stabdity of these new complexes shows they are stable between pH - 2.4 and pH=8.4.