Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Characteristics of Redox Agent with Additive in Steam-Iron Process for the High Purity Hydrogen Production

고순도 수소 생성을 위한 SIP법에서 첨가제에 따른 환원 특성

  • Jeon, Bup-Ju (Department of Energy Resources, Hanbuk University) ;
  • Kim, Sun-Myung (Department of Energy Resources, Hanbuk University) ;
  • Park, Ji-Hun (Department of Materials Science & Engineering, Korea University)
  • 전법주 (한북대학교 에너지자원학과) ;
  • 김선명 (한북대학교 에너지자원학과) ;
  • 박지훈 (고려대학교 신소재공학과)
  • Received : 2011.04.24
  • Accepted : 2011.06.20
  • Published : 2011.06.30
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Abstract

Effects of various inorganic-metal oxide (Zr, Zn, Si, Al and Ca as promoters and stabilizers) additive on the reduction rate of iron oxide and the composition of forming hydrogen using the steam-iron cycle operation was investigated. The reduction rate of redox agent with additive was determined from weight change by TGA. The changes of weight loss and reduction rate according to redox agent with various additive affected the hydrogen purity and cycle stability of the process. The cyclic micro reactor showed that hydrogen purity exceeding 95% could be obtained by the water splitting with Si/Fe, Zn/Fe, Zr/Fe redox agents. The redox agents with these elements had an affect on redox cycle stability as a good stabilizer for forming hydrogen by the steam-iron process.

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References

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