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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

高比表面超细铈锆钡粉体的制备

陈敏; 张培壮; 黄志彬; 郑小明   

  1. 浙江大学化学系 杭州 310028
  • 收稿日期:2003-04-07 修回日期:2003-05-29 出版日期:2004-05-20 网络出版日期:2004-05-20

Preparation of Ultrafine Ce-Zr-Ba Mixed Oxide Powder with High Surface Area

CHEN Min; ZHENG Pei-Zhuang; HANG Zhi-Bin; ZHENG Xiao-Ming   

  1. Department of Chemisry; Zhejiang University Hangzhou 310028; China
  • Received:2003-04-07 Revised:2003-05-29 Published:2004-05-20 Online:2004-05-20

PDF (PC)

900

被引次数

19

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.

关键词: 铈锆固溶体, 超细粉体, 高比表面, 耐高温材料

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.

Key words: Ce-Zr solid solution, ultrafine powder, high surface area, material of resistance high temperature

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