Keggin结构多金属含氧酸盐的热解性质  

Thermal Decomposition Behavior of Metal-oxygen Clusters with Keggin Structure

作　　者：孔爱国[1] 张素梅[1] 张达崴[1] 吕丽莉[1] 金超[1] 单永奎[1] 

机构地区：[1]华东师范大学化学系,上海200062

出　　处：《高等学校化学学报》2005年第11期2002-2006,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20173017;20273021)资助

摘　　要：用变温XRD、变温IR以及TG-DTA、溶解性实验等方法研究了具有Keggin结构的18种化合物YmHnXM12O40(X=P,S i,Ge;M=W,Mo;Y=NH4+,K+,Cu2+,m和n为抗衡离子数,YmHnXM12)的热解性质.得到了较为准确的热分解温度,探讨了其热分解过程,对其主要的热分解产物作了初步鉴定.对多金属含氧酸盐热分解的判断方法进行了系统研究,提出了新的见解.讨论了影响多金属含氧酸盐热解性质的一些主要因素及其变化规律.In this paper, the thermal decomposition behavior of the polyoxometalates with a Keggin structure YmHnXM12O40（X =P, Si, Ge; M =W, Mo, Y=NH4^＋, K^＋, Cu^2＋） was investigated systematically by using X-ray diffraction and IR spectra at different temperatures, TG-DTA and solubility experiment methods. Their precisely decomposed temperatures were obtained, and the procedure of decomposition was also explored. The determinant criterions of the thermal decomposition and the factors affecting the thermal property of the polyoxometalates were discussed and some new views were presented. At the same time, the main decomposition products of the prepared polyoxometalates were identified by XRD.

关 键 词：KEGGIN结构 多金属含氧酸盐 热分解温度 热解性质 

分 类 号：O614[理学—无机化学]