Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Removal of Nitrogen Oxides Using $Cu-Mn/CeO_2-ZrO_2$ Catalyst

$Cu-Mn/CeO_2-ZrO_2$ 촉매를 이용한 질소산화물 제거 반응

  • Jeon, Mi-Jin (Graduate School of Energy and Environmental System Engineering, University of Seoul) ;
  • Jeon, Jong-Ki (Department of Chemical Engineering, Kongju National University) ;
  • Park, Sung Hoon (Department of Environmental Engineering, Sunchon National University) ;
  • Park, Young-Kwon (Graduate School of Energy and Environmental System Engineering, University of Seoul)
  • 전미진 (서울시립대학교 에너지환경시스템공학과) ;
  • 전종기 (공주대학교 화학공학과) ;
  • 박성훈 (순천대학교 환경공학과) ;
  • 박영권 (서울시립대학교 에너지환경시스템공학과)
  • Published : 2012.06.10
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Abstract

The effect of the addition of Cu on the catalytic activity of the $Mn/CeO_2-ZrO_2$ catalyst for the low-temperature SCR reaction of NO was investigated. Three different amounts of Cu, 5, 10, and 15 wt%, were impregnated on the $Mn/CeO_2-ZrO_2$ catalyst. The characteristics of the synthesized catalysts were examined by BET, XRD, XPS, and $H_2-TPR$ analyses. The de-NOx efficiency of the Cu-added catalysts increased with the amount of Cu. When 15 wt% Cu was impregnated, the deNOx efficiency was the highest, reaching as high as 99%. The increased deNOx efficiency is attributed to the enhanced reducing power stemming from the interaction between Mn and Cu on the catalyst surface.

본 연구에서는 NO의 저온 SCR 반응에서 구리 첨가가 $Mn/CeO_2-ZrO_2$ 촉매의 활성에 미치는 영향을 알아보았다. 이를 위하여 $Mn/CeO_2-ZrO_2$ 촉매에 구리가 각각 5, 10, 15 wt% 첨가된 세가지 촉매의 활성을 조사하였다. 촉매의 특성은 BET, XRD, XPS, $H_2-TPR$을 통해 분석하였다. 구리가 첨가된 촉매의 질소산화물 저감 효율을 측정한 결과 Cu 농도가 증가할수록 활성이 증가하였으며 Cu 15 wt%가 담지하였을 경우 질소산화물 저감효율이 99%까지 도달하는 등 가장 높은 저감효율을 나타내었다. 이는 표면의 망간과 구리의 interaction에 의한 환원의 향상이 촉매 효율 증가의 원인으로 여겨진다.

Keywords

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