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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effects of Cu and Ni Additives for Hydrogen Storage and Release of Fe-based Oxide Mediums

Fe-계 산화물 매체의 수소 저장 및 방출을 위한 Cu 및 Ni 첨가제의 효과

  • Kim, Hong-Soon (Department of Fine Chemicals Engineering & Applied Chemistry, BK21-E2M, Chungnam National Univ.) ;
  • Cha, Kwang-Seo (Department of Fine Chemicals Engineering & Applied Chemistry, BK21-E2M, Chungnam National Univ.) ;
  • Lee, Dong-Hee (Department of Fine Chemicals Engineering & Applied Chemistry, BK21-E2M, Chungnam National Univ.) ;
  • Yoo, Byoung-Kwan (Department of Fine Chemicals Engineering & Applied Chemistry, BK21-E2M, Chungnam National Univ.) ;
  • Kang, Kyoung-Soo (Korea Institute of Energy Research) ;
  • Park, Chu-Sik (Korea Institute of Energy Research) ;
  • Kim, Young-Ho (Department of Fine Chemicals Engineering & Applied Chemistry, BK21-E2M, Chungnam National Univ.)
  • 김홍순 (충남대학교 정밀응용화학과 BK21-에너지환경소재사업단) ;
  • 차광서 (충남대학교 정밀응용화학과 BK21-에너지환경소재사업단) ;
  • 이동희 (충남대학교 정밀응용화학과 BK21-에너지환경소재사업단) ;
  • 유병관 (충남대학교 정밀응용화학과 BK21-에너지환경소재사업단) ;
  • 강경수 (한국에너지기술연구원) ;
  • 박주식 (한국에너지기술연구원) ;
  • 김영호 (충남대학교 정밀응용화학과 BK21-에너지환경소재사업단)
  • Published : 2008.10.30
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Abstract

The Effects of Cu or Ni additives co-added with Ce/Zr mixed oxides to Fe-based oxide mediums were investigated for the purpose of the replacement of Rh, a precious metal additive, in terms of hydrogen storage(reduction by hydrogen) and release(water splitting). From the results of temperature programmed reduction(TPR), initial reduction rate of iron oxide in the mediums was greatly increased with the addition of Cu, similar to that of Rh. For isothermal redox reaction of 10 cycles, the total amounts of hydrogen evolved in water splitting steps for the mediums added with Cu or Ni were highly maintained at ca. 7 mmol/g-material, even though the oxidation rates were slightly lower than that for the medium added with Rh. This result suggests that the replacement of Rh to Cu or Ni is possible as a co-additive for Fe-based oxide mediums.

Keywords

References

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