10—钨铈(Ⅳ)酸及其盐的制备与性质研究

PREPARATION AND PROPERTY INVESTIGATION OF DECA-TUNGSTO-CERATE ACID AND ITS SALT

本文用10—钨铈(Ⅳ)酸钠溶液通过阳离子交换树脂制得了10—钨铈(Ⅳ)酸溶液,并用冻析法制得了固体10—钨铈(Ⅳ)酸。通过化学分析,得知其组成为H_6[CeW_（10）O_（35）]19H_2O。并对10—钨铈(Ⅳ)酸及其盐的性质进行了测试。红外(IR)分析显示,10—钨铈(Ⅳ)酸与10—钨铈(Ⅳ)酸纳相比,在生成10—钨铈(Ⅳ)酸的过程中,聚合杂多阴离子的结构有些变形。此外,10—钨铈(Ⅳ)酸及其盐与其它杂多酸相比,性质上差异较大,稳定性也较差。

Dcca-tungstoccrate acid solution is made by cation exchange resin with sodium dcca-tungstoccrate. Then solid deca-tungstocerate acid is obtained by means of freezing. By chemical analysis, it is known that its formula is H6[CeW10O35] ?19H2O. The property of dcca-tungstoccrate acid and its salt is also measured. IR analysis showing, compared dcca-tungstoccrate acid with sodium deca-tungstoccrate, during the formation of dcca-tungstocerate acid, the structure of polyanion is deformed. Result showing, compared with other heteropoly acids, dcca梩ungstoccrate acid differs from other hctcropoly acids in 'he property and its stability is also poof.