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Journal of Inorganic Materials

Journal of Inorganic Materials >

2007 , Vol. 22 >Issue 3: 483 - 488

DOI: https://doi.org/10.3724/SP.J.1077.2007.00483

Research Paper

Catalytic Activity of La 1-x Sr x CoO 3 (x＝0.20.8) Supported on Porous Mullite Fiber Ceramics for NO and CO

  • DUAN Bi-Lin ,
  • ZENG Ling-Ke ,
  • LI Xiu-Yan ,
  • LIU Ping-An ,
  • SHUI An-Ze ,
  • LIU Yan-Chun
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  • Department of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

Received date: 2006-06-23

  Revised date: 2006-08-21

  Online published: 2007-05-20

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Abstract

Perovskite La 1-x SrxCoO3 ( x=0.2,0.4,0.6,0.8) catalysts based on porous mullite fiber ceramic were prepared by a vacuum impregnation method. The samples were characterized by XRD, SEM and BET, respectively. The La(OH)3 crystal phase was detected besides the perovskite structures in La1-x SrxCoO3 catalysts, and the La(OH)3 peaks become sharp as x decreases. Tridimensional netshape of support and the good dispersing particles of catalysts based on support were detected by SEM. Specific surface area of La 1-xSrxCoO3 increases with the degree of substitution x of Sr for La via BET tests. Catalytic activity of La 1-x Sr x CoO3 catalysts prepared for CO+NO was tested. The results indicate that La 1-x Sr x CoO 3 catalysts have a best catalytic activity, when partial substitution of Sr for La reaches the optimal substitution fraction ( x=0.2).

Key words： La1-xSrxCoO3 perovskite catalyst; porous mullite fiber ceramics; support; catalytic activity

Cite this article

DUAN Bi-Lin , ZENG Ling-Ke , LI Xiu-Yan , LIU Ping-An , SHUI An-Ze , LIU Yan-Chun . Catalytic Activity of La 1-x Sr x CoO 3 (x＝0.20.8) Supported on Porous Mullite Fiber Ceramics for NO and CO[J]. Journal of Inorganic Materials, 2007 , 22(3) : 483 -488 . DOI: 10.3724/SP.J.1077.2007.00483

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