Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Effects of pH and Ni/Mo Mole Ratio during Wet Impregnation on the Characteristics and Methane Dry Reforming Reactivity of Activated Charcoal Supported Ni-Mo Carbide Catalyst

습식담지시 pH와 Ni/Mo 몰비가 Ni-Mo/AC 카바이드 촉매의 특성과 메탄건식개질 반응성에 미치는 영향

  • Lee, Dongmin (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Hwang, Unyeon (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Park, Hyungsang (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Park, Sungyoul (Climate Change Research Division, Korea Institute of Energy Research) ;
  • Kim, Seongsoo (Climate Change Research Division, Korea Institute of Energy Research)
  • 이동민 (서강대학교 화공생명공학과) ;
  • 황운연 (서강대학교 화공생명공학과) ;
  • 박형상 (서강대학교 화공생명공학과) ;
  • 박성열 (한국에너지기술연구원 기후변화연구본부) ;
  • 김성수 (한국에너지기술연구원 기후변화연구본부)
  • Received : 2014.06.14
  • Accepted : 2014.08.31
  • Published : 2014.08.30
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Abstract

Activated charcoal supported nickel molybdenum carbide (carburized Ni-Mo/AC) catalysts were prepared by wet-impregnation followed by temperature-programmed carburization using 20% $CH_4/H_2$ gas. The effects of pH and initial Ni/Mo mole ratio during wet-impregnation step on the characteristics of the carburized Ni-Mo/AC catalysts were investigated using ICP, XRD, XPS, BET and $CO_2$-TPD techniques, and correlated with the catalytic activity of the carburized Ni-Mo/AC in methane dry reforming reaction. Comparison of the results of methane dry reforming reaction kinetics with the results of characterization of the carburized Ni-Mo/AC catalyst showed that the catalytic activity in methane dry reforming reaction was higher at higher initial Ni/Mo mole ratio or at lower pH(3~natural value). This phenomenon was related to the crystal size of metallic Ni in the carburized Ni-Mo/AC catalyst.

Keywords

References

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