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

  • 제18권2호
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  • Pages.109-115
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  • 2007
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
권호 표지

인공태양을 이용한 모노리스 적용 반응기에서 2단계 열화학적 물분해 연구

2-Step Thermochemical Water Splitting on a Active Material Washcoated Monolith Using a Solar Simulator as Heat Source

  • 강경수 (한국에너지기술연구원 열화학수소연구단) ;
  • 김창희 (한국에너지기술연구원 열화학수소연구단) ;
  • 박주식 (한국에너지기술연구원 열화학수소연구단)
  • Kang, Kyoung-Soo (Hydrogen Energy Research Croup, Korea Institute of Energy Research) ;
  • Kim, Chang-Hee (Hydrogen Energy Research Croup, Korea Institute of Energy Research) ;
  • Park, Chu-Sik (Hydrogen Energy Research Croup, Korea Institute of Energy Research)
  • 발행 : 2007.06.15
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초록

Solar energy conversion to hydrogen was carried out via a two-step thermochemical water splitting using metal oxide redox pair. To simulate the solar radiation, a 7 kW short arc Xe-lamp was used. Partially reduced iron oxide and cerium oxide have the water splitting ability, respectively. So, $Fe_3O_4$ supported on $CeO_2$ was selected as the active material. $Fe_3O_4/CeO_2$(20 wt/80 wt%) was prepared by impregnation method, then the active material was washcoated on the ceramic honeycomb monolith made of mullite and cordierite. Oxygen was released at the reduction step($1673{\sim}1823\;K$) and hydrogen was produced from water at lower temperature($873{\sim}1273\;K$). The result demonstrate the possibility of the 2-step thermochemical water splitting hydrogen production by the active material washcoated monolith. And hydrogen and oxygen was produced separately without any separation process in a monolith installed reactor. But the SEM and EDX analysis results revealed that the support used in this experiment is not suitable due to the thermal instability and coating material migration.

키워드

참고문헌

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