Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study of Reactivity Improvement of Ni-based Methane Steam Reforming Catalysts by Small Addition of Noble Metals

미량 귀금속 첨가에 의한 Ni-계열 메탄 수증기 개질 촉매의 반응 활성 향상에 관한 연구

  • Jeong, Jin-Hyeok (Dept. of Chemical Engineering, Kyongpook National University) ;
  • Koo, Kee-Young (Dept. of Chemical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Seo, Yu-Teak (New Energy Research Dept., Korea Institute of Energy Research) ;
  • Seo, Dong-Joo (New Energy Research Dept., Korea Institute of Energy Research) ;
  • Roh, Hyun-Seog (New Energy Research Dept., Korea Institute of Energy Research) ;
  • Seo, Yong-Seog (New Energy Research Dept., Korea Institute of Energy Research) ;
  • Lee, Deuk-Ki (Dept. of Environmental Engineering, Gwangju University) ;
  • Kim, Dong-Hyun (Dept. of Chemical Engineering, Kyongpook National University) ;
  • Yoon, Wang-Lai (New Energy Research Dept., Korea Institute of Energy Research)
  • 정진혁 (경북대학교 화학공학과) ;
  • 구기영 (한국과학기술원 화학공학과) ;
  • 서유택 (한국에너지기술연구원 신에너지연구부) ;
  • 서동주 (한국에너지기술연구원 신에너지연구부) ;
  • 노현석 (한국에너지기술연구원 신에너지연구부) ;
  • 서용석 (한국에너지기술연구원 신에너지연구부) ;
  • 이득기 (광주대학교) ;
  • 김동현 (경북대학교 화학공학과) ;
  • 윤왕래 (한국에너지기술연구원 신에너지연구부)
  • Published : 2006.09.15
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Abstract

The promotion effects of noble metals upon the activity and reducibility in steam methane reforming over $Ni/MgAl_2O_4$ catalysts were investigated. While $Ni/MgAl_2O_4$ catalysts require the pre-reduction by $H_2$, the noble metal-added catalysts show high catalytic activities without pre-treatment. According to $CH_4$-TPR, the addition of noble metal makes the $Ni/MgAl_2O_4$ catalyst easily reducible. The reduction degree of NiO in the noble metal-added catalysts after using at $650^{\circ}C$ without pre-reduction was $15{\sim}20%$, and was lower than that in the $H_2$-reduced $Ni/MgAl_2O_4$ catalyst(reduction degree=27%). The enhancement of the catalytic activity over noble metal-added catalysts results from easier reducibility by addition of noble metal and the synergy effect between noble metal and Ni.

Keywords

References

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