以Ce(NO3)3·6H2O和草酸二甲酯(DMO)为原料,采用均相沉淀法制备超细CeO2粉体.借助TEM、SEM、 XRD及DTA-TG等测试手段,观察分析并研究了初生、反应30min及反应2h的CeO2前驱体,干燥并500℃焙烧得到的最终产物--超细CeO2粉体的制备过程.结果表明:CeO2前驱体Ce2(C2O4)3·10H2O的形成与最终产物CeO2在形状上相似,说明形貌有一定的遗传继承性,故可通过控制反应条件来控制前驱体的形貌及大小,达到控制最终产物的目的.制备了块状的、分散均匀良好的,粒径大小约为1μm的超细CeO2粉体.
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