Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on Pt-Na/CeO2 Catalysts for Single Stage Water Gas Shift Reaction

Single stage WGS 반응용 Pt-Na/CeO2 촉매 연구

  • Jeong, Dae-Woon (Dept. of Environmental Engineering, Yonsei University) ;
  • Shim, Jae-Oh (Dept. of Environmental Engineering, Yonsei University) ;
  • Jang, Won-Jun (Dept. of Environmental Engineering, Yonsei University) ;
  • Roh, Hyun-Seog (Dept. of Environmental Engineering, Yonsei University)
  • Received : 2012.04.06
  • Accepted : 2012.04.27
  • Published : 2012.04.30
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Abstract

Na promoted Pt/$CeO_2$ catalysts with various Na amounts (1, 2, and 3wt%) have been applied to water gas shift reaction (WGS) at a gas hourly space velocity (GHSV) of 45515 $h^{-1}$. 1wt%Pt-2wt%Na/$CeO_2$ catalyst exhibited the highest WGS activity at $240^{\circ}C$ among the catalysts prepared in this study. In addition, 1wt%Pt-2wt%Na/$CeO_2$ catalyst showed relatively stable activity with time on stream. The high activity/stability of 1wt%Pt-2wt%Na/$CeO_2$ catalyst was correlated to its easier reducibility and higher oxygen storage capacity (OSC). As a result, 2wt% Na promoted Pt/$CeO_2$ can be a promising candidate catalyst for the single stage WGS, which requires high intrinsic activity at very high GHSV.

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References

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