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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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$SO_3$ Decomposition Catalysis in SI Cycle to to Produce Hydrogen

SI 원자력 수소생산을 위한 $SO_3$ 분해반응촉매에 관한 연구

  • Kim, Tae-Ho (Korea Institute of Science and Technology Clean Energy Center) ;
  • Shin, Chae-Ho (Chungbuk National University, Department of Chemical Engineering) ;
  • Joo, Oh-Shim (Korea Institute of Science and Technology Clean Energy Center) ;
  • Jung, Kwang-Deog (Korea Institute of Science and Technology Clean Energy Center)
  • 김태호 (한국과학기술연구원, 청정에너지센터) ;
  • 신채호 (충북대학교, 화학공학부) ;
  • 주오심 (한국과학기술연구원, 청정에너지센터) ;
  • 정광덕 (한국과학기술연구원, 청정에너지센터)
  • Received : 2011.01.19
  • Accepted : 2011.02.18
  • Published : 2011.02.28
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Abstract

Fe, Ni and Co, typical active components, were dispersed on $Al_2O_3$ and $TiO_2$ for $SO_3$ decomposition. $SO_3$ decomposition was conducted at the temperature ranges from $750^{\circ}C$ to $950^{\circ}C$ using the prepared catalysts. Alumina based catalysts showed the surface areas higher than Titania based catalysts, which resulted from spinel structure formation of alumina based catalysts. Catalytic $SO_3$ decomposition reaction rates were in the order of Fe>Co${\gg}$Ni. The metal sulfate decomposition temperature were in the order of Ni>Co>Fe from TGA/DTA analysis of metal sulfate. During $SO_3$ decomposition, metal sulfate can form on the catalysts. $SO_2$ and $O_2$ can be produced from the decomposition of metal sulfate. In that point of view, the less is the metal sulfate deomposition temperature, the higher can be the $SO_3$ decomposition activity of the metal component. Therefore, it can be concluded that metal component with the low metal sulfate decomposition temperature is the pre-requisite condition of the catalysts for $SO_3$ decomposition reaction.

Keywords

References

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