| 高比表面超细铈锆钡粉体的制备 |
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| 引用本文： | 陈敏,张培壮,黄志彬,郑小明. 高比表面超细铈锆钡粉体的制备[J]. 无机材料学报, 2004, 19(3): 661-665 |
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| 作者姓名： | 陈敏 张培壮 黄志彬 郑小明 |
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| 作者单位： | 浙江大学化学系 杭州 310028 |
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| 摘 要： | 采用聚合物前驱体法制备了超细Ce-Zr-Ba复合氧化物粉体,用XRD、TEM、BET和TG-DTA技术研究了合成的粉体的组成结构,晶粒大小、比表面和孔分布情况.结果表明,该粉体平均粒径<50nm,经600℃焙烧4h后该粉体的比表面为118.6m2/g,经800℃高温焙烧4h后比表面仍高达87.4m2/g,经1000℃高温处理后,粉体仍能保持纳米级,且分散性好,由于该粉体的高热稳定性和高比表面性能,可用作汽车尾气三效催化剂的耐高温保护性涂层材料.
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| 关 键 词： | 铈锆固溶体 超细粉体 高比表面 耐高温材料 |
| 文章编号： | 1000-324X(2004)02-0661-05 |
| 收稿时间： | 2003-04-07 |
| 修稿时间： | 2003-05-29 |
Preparation of Ultrafine Ce-Zr-Ba Mixed Oxide Powder with High Surface Area |
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| CHEN Min,ZHENG Pei-Zhuang,HANG Zhi-Bin,ZHENG Xiao-Ming. Preparation of Ultrafine Ce-Zr-Ba Mixed Oxide Powder with High Surface Area[J]. Journal of Inorganic Materials, 2004, 19(3): 661-665 |
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| Authors: | CHEN Min ZHENG Pei-Zhuang HANG Zhi-Bin ZHENG Xiao-Ming |
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| Affiliation: | Department of Chemisry; Zhejiang University Hangzhou 310028; China |
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| Abstract: | Ultrafine powder of Ce-Zr-Ba mixed oxide was prepared with a macromolecule surface modified method. The typical structure, particle size, surface area and pore structure of the powder were investigated by TEM, XRD, BET and TG-DTA technologies. The results show that the Ce-Zr-Ba mixed oxide powder is nano-sized with the particle size of 50nm, and a high surface area of 119.0m2/g at the calcination of 600℃ for 4h. The surface area of the powder remains 87.4m2/g even calcination at 800℃ for 4h. After calcination at 1000℃ for 4h, it will keep good particle distribution and in nano-sized properties. This powder can be used as the material in three way catalyst (TWC) for its novel character of resistance high temperature and high surface area. |
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| Keywords: | Ce-Zr solid solution ultrafine powder high surface area material of resistance high temperature |
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