第 32 卷第 5 期 Vol. 32 No. 5 2002 年 10 月 Oct 2002

所属栏目：其它 溶胶-凝胶法制备纳米CeO_2

张环华; 李秀珍; 潘湛昌; 肖楚民(广东工业大学轻工化工学院; 广东广州; 510090)

摘　要：以硝酸铈和柠檬酸为原料 ,采用溶胶 凝胶 (sol gel)法制备了纳米CeO2 对反应温度、金属离子与配体的摩尔比、凝胶烘干温度、焙烧温度等制备条件对产物的影响进行了研究。结果表明 ,所得CeO2 粒子为立方晶相系 ,呈球形 ,平均粒径达到纳米级。并初步对该方法进行了改进 ,采用微波加热的方法可以缩短反应时间 ,节约能源

关键词：溶胶-凝胶法; CeO2纳米晶体; 制备; 微波加热

中图分类号：TQ132.4　　文献标识码：A　　文章编号：1009-9212(2002)05-0030-02

Preparation of Nanocrystalline CeO_2 by Sol-Gel Method

ZHANG Huan hua; et al.（Faculty of Chemical Engineering and Light Industry; Guangdong University of Technology; Guangdong Guangzhou; 510090; China）

Abstract：Nanocrystalline CeO 2 were prepared by sol gel method using cerous nitrate and citric acid. The powders were analyzed by XRD. It was showed that the synthesized CeO 2 was cubic in structure and CeO 2 particles were basically spherical in shape. Several factors, such as reacting temperature, the ratio of cerous nitrate with citric acid, drying temperature, and etc. were investigated. It was showed that reacting time can be shorten by means of microwave radiation.

Key words：sol gel method; nanocrystalline CeO 2; preparation; microwave

收稿日期：2002-08-10

阅读全文