摘要
提出一种以99.995%Ce(NO3)3为原料,强碱性阴离子交换树脂为交换介质,采用离子交换法制备高纯度的纳米CeO2晶体的新方法。就离子交换反应过程中的Ce3+浓度、树脂加入速度和离子交换温度及Ce(OH)3的煅烧温度等条件对CeO2粒径的影响进行了探讨,得出了离子交换法制备纳米CeO2晶体的最佳工艺条件。FT-IR,TEM和XRD分析表明,离子交换法无需对合成的Ce(OH)3溶胶进行洗涤即可去除NO3-,CO32-等阴离子杂质,将该溶胶真空干燥后,在空气中于100℃下焙烧4h得粒径分布均匀、平均晶粒尺寸约5nm,高纯度的CeO2粉体。
A novel method to synthesize CeO2 crystal of high purity was developed by using 99.995% Ce（NO3）3 as raw materials and strongly basic anionexchange resins as exchange medium. The effects of concentration of Ce^3＋ , velocity of resins putted in, ion exchange temperature and calcination temperature on particle diameter of CeO2 were also discussed and the optimum conditions were o and XRD show that Ce（ CO3^2- can be prepared by out washing, then the CeO2 synthesized by vacuum Ce（OH）3-sol at 100℃ for ameter of 5 nm and good d
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2006年第2期189-192,共4页
Chinese Journal of Rare Metals
基金
教育部博士点基金项目(B20020288015)资助
