• 제목/요약/키워드: 열화학

검색결과 748건 처리시간 0.019초

페라이트계 금속 산화물 매체 상에서 열화학 메탄 개질 반응 특성 (Reaction Characteristics of Thermochemical Methane Reforming on Ferrite-Based Metal Oxide Mediums)

  • 차광서;이동희;조원준;이영석;김영호
    • 한국수소및신에너지학회논문집
    • /
    • 제18권2호
    • /
    • pp.140-150
    • /
    • 2007

  • Thermochemical 2-step methane reforming, involving the reduction of metal oxide with methane to produce syngas and the oxidation of the reduced metal oxide with water to produce pure hydrogen, was investigated on ferrite-based metal oxide mediums. The mediums, CoFZ, CuFZ, or MnFZ, were composed of the mixture of M(M=Co, Cu or Mn)-substituted ferrite as an active component and $ZrO_2$ as a binder, respectively. The WZ medium, composed of the mixture of $WO_3$ and $ZrO_2$, was also prepared to compare. With an addition of $ZrO_2$, the surface area of the mediums was slightly increased and the sintering of active components was greatly suppressed during the reduction. The higher reactivity of the reduced mediums for water splitting was confirmed by the temperature programmed reaction. From the results of the thermochemical 2-step methane reforming, the reactivity of $CH_4$ reduction and water splitting with ferrite-based metal oxide mediums was relatively higher than that with WZ, and the order of reactivity of the mediums was MnFZ>CoFZ>CuFZ>WZ.

  • PDF KSCI