ZnYb_2O_4稀土复合氧化物合成与结构解析  

Preparation and Structure Analysis of Rare Earth Complex Oxide ZnYb_2O_4

作　　者：张勇[1] 郑超[1] 张克立[2] 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430073 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《辽宁化工》2009年第4期217-221,共5页Liaoning Chemical Industry

摘　　要：报道了以流变相-先驱物法制备稀土复合氧化物ZnYb2O4的软化学方法。首先用流变相法合成草酸盐先驱物ZnYb2(C2O4)4,然后用DTA和TG研究了先驱物在空气中的热分解过程;用X射线粉末衍射和IR光谱表征了热分解固体产物;通过从头算法对热分解固体产物的晶体结构进行了解析。结构分析表明该化合物为尖晶石结构。In this paper, a soft ehemieal route was reported for the preparation of ZnYb2O4 by rheological phase -precursor Reaction Method. First, the oxalate precursor was synthesized by rheologieal phase reaction, and then thermal decomposition of ox,late precursor in air atmosphere was studied by DTA and TG. The solid product of thermal decomposition was characterized by XRD and IR,and finally the structure of ZnYb2O4 was analyzed by ab initio structure solution method. It proves that the ZnYb2O4 is a spinel structure type. The rheologieal phase - preeursor reaction method provides a simple, practicable and affective route for the synthesis of rare earth oxides.

关 键 词：ZnYb2O4 草酸盐先驱物 流变相反应 

分 类 号：O611.4[理学—无机化学]