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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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The Effect of La2O3 Loading on the Performance of Ni-La2O3-Ce0.8Zr0.2O2 Catalysts for Steam Reforming of Methane

수증기 개질 반응에서 Ni-La2O3-Ce0.8Zr0.2O2 촉매의 La2O3 함량이 촉매의 성능에 미치는 영향

  • YOO, SEONG-YEUN (Department of Environmental Engineering, Yonsei University) ;
  • KIM, HAK-MIN (Department of Environmental Engineering, Yonsei University) ;
  • KIM, BEOM-JUN (Department of Environmental Engineering, Yonsei University) ;
  • JANG, WON-JUN (Department of Environmental Engineering, Yonsei University) ;
  • ROH, HYUN-SEOG (Department of Environmental Engineering, Yonsei University)
  • Received : 2018.08.06
  • Accepted : 2018.10.30
  • Published : 2018.10.30
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Abstract

$Ni-La_2O_3-Ce_{0.8}Zr_{0.2}O_2$ catalysts with various $La_2O_3$ loading were investigated for hydrogen production from steam reforming of methane (SRM). The $La_2O_3$ loading influenced the physicochemical properties of $Ni-La_2O_3-Ce_{0.8}Zr_{0.2}O_2$ catalysts such as BET surface area, Ni dispersion, Ni size and reducibility. Among the prepared catalysts, $Ni-70La_2O_3-Ce_{0.8}Zr_{0.2}O_2$ catalyst showed the highest activity and stability at a very high gas hourly space velocity (GHSV) of $932,556h^{-1}$. This is mainly due to high Ni dispersion, small Ni size and high reducibility.

Keywords

References

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