Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (9): 99-103.

• Materials Science & Technology • Previous Articles     Next Articles

Preparation and Catalytic Performance of La0.8Sr0.2CoO3Supported on M ullite Fiber Ceramic

Zeng Ling-ke1  Duan Bi-lin1  Liu Ping-an1  Wang Hui1  Shui An-ze1  Liu Yan-chun1  Wang Xiao-hua2   

  1. 1.School of Materials Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China;2.College of Chemistry and Chemical Engineering, Jishou Univ.,Jishou 416000.Hunan,China
  • Received:2005-10-09 Online:2006-09-25 Published:2006-09-25
  • Contact: 曾令可(1944-)，男，教授，博士生导师，主要从事无机非金属材料研究 E-mail:lingke@scut.edu.cn
  • About author:曾令可(1944-)，男，教授，博士生导师，主要从事无机非金属材料研究
  • Supported by:

    国家自然科学基金资助项目(50276017)；广东省科技攻关项目(2005B10301026)；广东省经贸委财政技术创新专项资金资助项目(200501008)

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Abstract:

The perovskite-type La0.8Sr0.2CoO3supported on the mullite fiber porous ceramic was prepared by means of impregnation method,and was then characterized by SEM and XRD,thus coming to the( onclusion that the perovskite-type composite oxidant can disperse on the surface of mullite fiber ceramic. The catalytic activity of La0.8Sr0.2CoO3for NO and CO was also evaluated. The effect of the doped PdCl2,with a mass fraction of 0.1% on the catalytic activity of the perovskite-type La0.8Sr0.2CoO3 was finally discussed.The results show that the conver-sion rates of NO and CO respectively reach 74.5% and 99% at 601 ℃ without Pd doping.and both reach 100%at 350 ℃ with little Pd doping.

Key words: perovskite-type La0.8Sr0.2CoO3, mullite fiber, porous ceramic, carrier, palladium, catalytic activity