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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Activity of Ni/Ce-ZiO2 Catalyst on the Steam Reforming Reaction with Pretreatment Conditions

전처리 조건에 따른 Ni/Ce-ZiO2촉매의 수증기 개질반응 활성

  • Oh, Young-Sam (LNG Technology Research Center, Korea Gas Corporation) ;
  • Song, Taek-Yong (LNG Technology Research Center, Korea Gas Corporation) ;
  • Baek, Young-Soon (LNG Technology Research Center, Korea Gas Corporation) ;
  • Jun, Ki-Won (Chemical Technology Division, Korea Research Institute of Chemical Technology)
  • 오영삼 (한국가스공사 연구개발원 LNG기술연구센타) ;
  • 송택용 (한국가스공사 연구개발원 LNG기술연구센타) ;
  • 백영순 (한국가스공사 연구개발원 LNG기술연구센타) ;
  • 전기원 (한국화학연구원 분자활성공학연구실)
  • Published : 2003.03.15
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Abstract

In this study, activity changes of $Ni/Ce-ZrO_2$ catalyst for steam reforming reaction in the various steam treatment condition were investigated and BET, XRD and XPS analysis were introduced to characterize the catalyst before and after treatment. Activity test showed that $Ni/Ce-ZrO_2$ catalyst had good activity after reduction in steam reforming reaction but deactivated rapidly after steam treatment at high temperature. Activities of deactivated catalyst by steam was recovered to die previous activity level after reduction using hydrogen rich gas. It was observed that catalytic activity was preserved after repeated steam treatment, too. It showed that change of catalytic activity due to steam treatment is perfectly reversible. From the BET, XRD and XPS analysis, deactivation of $Ni/Ce-ZrO_2$ catalyst was due to the transition from Ni, that is activity site for steam reforming reaction, to $NiAl_2O_4$ in steam treatment at high temperature.

Keywords

References

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