Improvement of $CO_2$Decomposition by Impregnating Noble Metals to Nano-size (Ni, Zn)-ferrites

귀금속 첨가에 의한 나노 (Ni, Zn)-페라이트의 $CO_2$분해 향상

  • Kim, Jeong-Sik (Dept. of Materials Science & Engineering, The University of Seoul) ;
  • An, Jeong-Ryul (Dept. of Materials Science & Engineering, The University of Seoul) ;
  • Gang, Gye-Myeong (Dep. of Material Science & Engineering, Seoul National University of Technology)
  • 김정식 (서울시립대학교 재료공학과) ;
  • 안정률 (서울시립대학교 재료공학과) ;
  • 강계명 (서울산업대학교 재료공학과)
  • Published : 2001.10.01

Abstract

In the present study, nano-size powders of ternary ferrites, $Ni_{0.5}Zn_{0.5}Fe_2O_4$, as the potential catalysts of $CO_2$decomposition, were prepared by the wet processing of hydrothermal synthesis and coprecipitation method, and the catalyzing effects of impregnation of the noble metals, Pt and Pd, onto $Ni_{0.5}Zn_{0.5}Fe_2O_4$for the $CO_2$decomposition were investigated. XRD results of the synthesized ferrites showed a typical spinel structure of ferrite and the particle size was very small as about 6~10 nm. BET surface area of the ternary ferrites was not affected by the impregnation of Pt and Pd. The reactivity of the $CO_2$decomposition to carbon was improved by the impregnation of the noble metals of Pd and Pt. The effect of Pd-impregnation on the $CO_2$decomposition rate was higher than Pt-impregnation.

Keywords

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