| 引用本文: | 许静,谢凯,陈一民,等.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.[点击复制] |
| XU Jing,XIE Kai,CHEN Yimin,et al.Catalytic Performance of Supported Cobalt Ultrafine ParticalCatalysts[J].Journal of National University of Defense Technology,2001,23(1):28-30[点击复制] |
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| 负载型钴基超细粒子催化剂的催化性能 |
| 许静, 谢凯, 陈一民, 盘毅, 雍成纲 |
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(国防科技大学 航天与材料工程学院, 湖南 长沙 410073)
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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（160℃～800℃）；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。 |
| 关键词: 溶胶-凝胶法 钴基催化剂 超细粒子 |
| DOI： |
| 投稿日期：2000-10-05 |
| 基金项目: |
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| Catalytic Performance of Supported Cobalt Ultrafine ParticalCatalysts |
| XU Jing, XIE Kai, CHEN Yimin, PAN Yi, YONG Chengang |
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(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. |
| Keywords: sol-gel methods ultrafine particle supported cobalt catalysts |
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