Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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CO oxidation Reaction over copper metal oxide catalysts

구리복합산화물 촉매상에서 일산화탄소의 산화반응

  • Lee, Hak Beum (Department of Chemical Engineering, RCCT, Hankyong National University) ;
  • Koh, Hyoung Lim (Department of Chemical Engineering, RCCT, Hankyong National University)
  • Received : 2016.02.16
  • Accepted : 2016.03.22
  • Published : 2016.03.30
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Abstract

CO oxidation was performed with Cu-Mn and Cu-Zn co-precipitated catalysts as differential precipitant, metal ratio and calcination temperature. The effects of differential metal mole ratio and calcination temperature in mixed metal oxide catalyst were investigated with CO oxidation reaction. Physiochemical properties were studied by XRD, $N_2$ sorption and SEM. 2Cu-1Mn with $Na_2CO_3$ catalyst calcined at $270^{\circ}C$ has a large surface area $43m^2/g$ and the best activity for CO oxidation. $Cu_{0.5}Mn_{2.5}O_4$ in XRD peak shows the lower activity than others. The catalytic activity over the catalyst calcined $270^{\circ}C$ displayed the highest conversion, and it was better activity comparing with Pt catalysts CO conversion.

Cu-Mn과 Cu-Zn 촉매를 침전제로 다르게 하거나, 금속의 몰비율, 소성온도를 다르게 하여 공침법으로 제조하였고 CO산화반응을 수행하여 혼합산화물 촉매에서 Cu, Mn 과 Zn의 영향 및 소성온도가 미치는 영향을 조사하였다. 촉매의 물리 화학적 특성을 알아보기 위하여 XRD, $N_2$ 흡착 및 SEM의 분석을 수행하였다. $Na_2CO_3$로 침전시켜 $270^{\circ}C$로 소성하여 제조한 2Cu-1Mn 산화물 촉매가 저온에서 CO 산화반응 활성이 가장 좋았으며 2Cu-1Mn 산화물 촉매는 $43m^2/g$으로 가장 높은 비표면적과 촉매 활성을 나타내었다. XRD로 촉매의 결정구조를 분석하였을 때 $Cu_{0.5}Mn_{2.5}O_4$의 결정구조를 갖는 촉매는 낮은 활성을 보였다. $270^{\circ}C$에서 소성한 촉매가 좋은 활성을 나타냈으며 Pt 촉매와 비교하여도 저온에서 CO산화반응이 더욱 우수함을 알 수 있었다.

Keywords

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