| 负载型钴基超细粒子催化剂的催化性能 |
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| 引用本文： | 许静,谢凯,陈一民,盘毅,雍成纲.负载型钴基超细粒子催化剂的催化性能[J].国防科技大学学报,2001,23(1):28-30. |
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| 作者姓名： | 许静 谢凯 陈一民 盘毅 雍成纲 |
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| 作者单位： | 1. 国防科技大学航天与材料工程学院，湖南 长沙 410073
2. 国防科技大学航天与材料工程学院，湖南 长沙 410073谢凯 |
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| 摘 要： | 采用共溶胶 -凝胶法和超临界干燥工艺 ,制备了负载型钴基超细粒子催化剂Co-SiO2 ,研究了该种催化剂对CO氧化反应的催化性能 ,并进一步考察了钴含量对其催化活性的影响。研究结果表明 ,该种催化剂在低钴含量 ( 1 %～ 2 % )时即对CO的氧化反应表现出高的催化活性 ,并具有优良的热稳定性和很宽的反应活性温度区域 ( 1 60℃～ 80 0℃ ) ;钴含量对其催化活性和稳定性有重要影响 ,在 0 1 %～ 2 %的含量范围内 ,随钴含量增加 ,催化活性和稳定性逐渐升高。
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| 关 键 词： | 溶胶-凝胶法 钴基催化剂 超细粒子 |
| 文章编号： | 1001-2486(2001)01-0028-03 |
| 收稿时间： | 2000/10/5 0:00:00 |
| 修稿时间： | 2000年10月5日 |
Catalytic Performance of Supported Cobalt Ultrafine ParticalCatalysts |
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| XU Jing,XIE Kai,CHEN Yimin,PAN Yi and YONG Chengang.Catalytic Performance of Supported Cobalt Ultrafine ParticalCatalysts[J].Journal of National University of Defense Technology,2001,23(1):28-30. |
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| Authors: | XU Jing XIE Kai CHEN Yimin PAN Yi and YONG Chengang |
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| Affiliation: | College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | Supported Co ultrafine partical catalysts were prepared by means of sol-gel methods and supercritical drying. Their catalytic performance for CO oxidation was studied. The results indicate that the catalysts have high activity even with low content (1%～2%). They show good heat stability and can be performed in a wide reaction temperature area ranging from 160℃ to 800℃ .With the increase of Co Concentration, the activity and stability of Co-SiO2 increase. |
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| Keywords: | sol-gel methods ultrafine particle supported cobalt catalysts |
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