钼钨硅杂多酸稀土盐的合成与表征

Synthesis and Characterization of the Lanthanide Salts of Heteropoly Molybdotungstosilicate

用复分解法合成出通式为ＬｎＨＳｉＭｏ１０Ｗ２Ｏ４０·ｘＨ２Ｏ（Ｌｎ＝Ｌａ、Ｃｅ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ、Ｇｄ、Ｔｂ、Ｄｙ、Ｙｂ）十种钼钨硅杂多酸稀土盐，利用ＩＲ、ＵＶ、ＸＲＤ进行了表征，借助ＴＧ－ＤＴＡ对配合物的热解性质进行了研究，得到了配合物热稳定存在的温度范围为４００～４５０℃。

By using double decomposition method,ten lanthanide salts of heteropoly molybdotungstosilicate LnHSiMo 10 W 2O 40 ·xH 2O(Ln=La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Yb) have been synthesized.They were characterized by IR,UV,XRD and TG-DTA.The decomposition temperature of the new compounds is in the range of 400～450℃。