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Hydrogen Storage and Release by Redox Reaction of Fe/Zr/Mo Mixed Oxide Mediums

Fe/Zr/Mo 혼합 산화물 매체의 Redox 반응을 이용한 수소 저장 및 방출

  • Je, Han-Sol (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Kang, Eun-Jee (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Lee, Su-Gyung (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Park, Chu-Sik (Hydrogen Energy Research Group, Korea Institute of Energy Research) ;
  • Kim, Young-Ho (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University)
  • 제한솔 (충남대학교 정밀응용화학과) ;
  • 강은지 (충남대학교 정밀응용화학과) ;
  • 이수경 (충남대학교 정밀응용화학과) ;
  • 박주식 (한국에너지기술연구원) ;
  • 김영호 (충남대학교 정밀응용화학과)
  • Received : 2011.08.05
  • Accepted : 2011.10.21
  • Published : 2011.10.30

Abstract

Hydrogen storage and release of Fe/Zr/Mo mixed oxide mediums were investigated by hydrogen reduction and water splitting oxidation($Fe_3O_4+4H_2{\rightleftharpoons}3Fe+4H_2O$). As the results of TPR/O, Mo was an additive to enhance the reactivity of water splitting oxidation as well as the stability of the medium. On the other hand, it seemed that $ZrO_2$ additive provided the passway for the diffusion of gaseous chemicals on the medium in repeated redox cycles. Among the Fe/Zr/Mo mediums, a FeZrMo-7 medium (Fe/Zr/Mo=80/13/7mol%) exhibited the best performance with good durability during five repeated redox cycles. The amount of hydrogen evolved on the medium was maintained at ca. 10.7mmol-$H_2$/g-medium corresponding to the hydrogen storage amount of ca. 2.2wt%.

Acknowledgement

Grant : 원자력수소 핵심기술개발사업

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