钇钼钨硅杂多配合物的合成稀土多元渗及导电性

Study on the synthesis rare earth Co-permeation and conductivity of yttrium molybdotungstosilic quaternary heteropoly complex with Keggin type structure

用降解法合成了未见报道的标题配合物.通过化学分析、ICP和TG曲线确定了其化学式为K10H3[Y(SiW9Mo2O39)2];利用IR、XRD、183W-NMR、循环伏安等手段对其结构进行了表征.结果表明,杂多阴离子为α-型Keggin结构.采用稀土多元渗的方法对配合物进行了气相热扩渗,ICP和XPS测试表明,微量的稀土元素La,Sm和Dy可以渗入到配合物的体相,并与组分元素发生键合作用;导电性的测试结果表明,室温扩渗后,试样的电导率提高了约104倍,有望成为具有实际应用的固体电解质.

The title compound has been synthesized by means of degradation for the first time.Its chemical formula is K_(10)H_3_,which is confirmed by chemical analysis,ICP and TG.IR,XRD,^(183) W-NMR and CV are used to characterize the title complex and the results show that the complex is α type Keggin structure.Rare earth co-permeation is used to treat this complex and the results of ICP and XPS indicate that rare earth elements (La,Sm and Dy) have permeated and diffused into the body of this sample and exist in the forms of binding with other components.The conductivity of permeated sample,at room temperature,is about 10~4 times of that of K_(10)H_3,which shows a promising application as solid electrolyte.