| 第 32 卷第 5 期 |  | Vol. 32 No. 5 | | 2002 年 10 月 | Oct 2002 |
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所屬欄目：其它
溶膠-凝膠法制備納米CeO_2 |
| 張環(huán)華; 李秀珍; 潘湛昌; 肖楚民(廣東工業(yè)大學(xué)輕工化工學(xué)院; 廣東廣州; 510090) |
| 摘 要：以硝酸鈰和檸檬酸為原料 ,采用溶膠 凝膠 (sol gel)法制備了納米CeO2 對反應溫度、金屬離子與配體的摩爾比、凝膠烘干溫度、焙燒溫度等制備條件對產(chǎn)物的影響進(jìn)行了研究。結果表明 ,所得CeO2 粒子為立方晶相系 ,呈球形 ,平均粒徑達到納米級。并初步對該方法進(jìn)行了改進(jìn) ,采用微波加熱的方法可以縮短反應時(shí)間 ,節約能源 |
| 關(guān)鍵詞：溶膠-凝膠法; CeO2納米晶體; 制備; 微波加熱 |
| 中圖分類(lèi)號：TQ132.4 文獻標識碼：A 文章編號：1009-9212(2002)05-0030-02 |
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| 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 |
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收稿日期：2002-08-10
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