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Reaction Characteristics of Cu/CeO2 Catalysts for CO Oxidation

일산화탄소 산화반응을 위한 Cu/CeO2 촉매의 반응특성

  • Kim, Su Bin (Department of Environmental Energy Engineering, Kyonggi University) ;
  • Kim, Min Su (Department of Environmental Energy Engineering, Kyonggi University) ;
  • Kim, Se Won (Korea Institute of Industrial Technology, Thermochemical Energy System Group) ;
  • Hong, Sung Chang (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
  • 김수빈 (경기대학교 일반대학원 환경에너지공학과) ;
  • 김민수 (경기대학교 일반대학원 환경에너지공학과) ;
  • 김세원 (한국생산기술연구원, 고온에너지시스템 그룹) ;
  • 홍성창 (경기대학교 환경에너지공학과)
  • Received : 2019.08.22
  • Accepted : 2019.09.11
  • Published : 2019.10.10

Abstract

In this study, the effects of the structural properties of the catalyst on CO oxidation reaction by controlling the $Cu/CeO_2$ catalyst amount and calcination temperature were studied, and also the CO conversion rate of the catalyst at the temperature range of $100{\sim}300^{\circ}C$ was evaluated. XRD, Raman, BET, $H_2-TPR$, and XPS analyses were performed to confirm the effect of changes in the structural properties on the chemical properties of the catalyst. The result confirmed that a substitution bond between Cu and Ce was formed and a lot of Cu and Ce bonds were formed when the catalyst carrying 5 wt.%. Of Cu was calcined at $400^{\circ}C$. The Cu-Ce binding was confirmed by peak shifts in Raman analysis and also peaks appeared in $H_2-TPR$. In addition, the balance state analysis demonstrated that a lot of surface labile oxygen molecules are formed, which can be more easily contributed to the reaction with $Ce^{3+}$ species known to form a substitution bond easily. It was found that CO conversion rate of the catalyst used in this study was close to 100% at $150^{\circ}C$.

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP)

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