Applied Chemistry for Engineering, Vol.23, No.3, 348-351, June, 2012
Cu-Mn/CeO2-ZrO2 촉매를 이용한 질소산화물 제거 반응
Removal of Nitrogen Oxides Using Cu-Mn/CeO2-ZrO2 Catalyst
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초록
본 연구에서는 NO의 저온 SCR 반응에서 구리 첨가가 Mn/CeO2-ZrO2 촉매의 활성에 미치는 영향을 알아보았다. 이를 위하여 Mn/CeO2-ZrO2 촉매에 구리가 각각 5, 10, 15 wt% 첨가된 세가지 촉매의 활성을 조사하였다. 촉매의 특성은 BET, XRD, XPS, H2-TPR을 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.
The effect of the addition of Cu on the catalytic activity of the Mn/CeO2-ZrO2 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/CeO2-ZrO2 catalyst. The characteristics of the synthesized catalysts were examined by BET, XRD, XPS, and H2-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.
- Bosch H, Janssen F, Catal. Today., 2, 369 (1988)
- Qi GS, Yang RT, Appl. Catal. B: Environ., 44(3), 217 (2003)
- Valdes-Solis T, Marban G, Fuertes AB, Appl. Catal. B: Environ., 46(2), 261 (2003)
- Nova I, Acqua LD, Lietti L, Giamello E, Forzatti P, Appl. Catal. B: Environ., 35(1), 31 (2001)
- Tang XL, Hao JM, Yi HH, Li JH, Catal. Today, 126(3-4), 406 (2007)
- Chen JP, Yang RT, Appl. Catal. A : Gen., 80, 135 (1992)
- Kang M, Park ED, Kim JM, Yie JE, Appl. Catal. A: Gen., 327(2), 261 (2007)
- Singoredjo L, Korver R, Kapteijn F, Moulijn J, Appl. Catal.B : Environ., 1, 297 (1992)
- Richter M, Trunschke A, Bentrup U, Brzezinka KW, Schreier E, Schneider M, Pohl MM, Fricke R, J. Catal., 206(1), 98 (2002)
- Qi GS, Yang RT, Chang R, Catal. Lett., 87(1-2), 67 (2003)
- Kim YJ, Kwon HJ, Nam IS, Choung JW, Kil JK, Kim HJ, Cha MS, Yeo GK, Catal. Today., 151, 244 (2010)
- Morales MR, Barbero BP, Cadus LE, Appl. Catal. B: Environ., 67(3-4), 229 (2006)
- http://www.lasurface.com.
- Kramer M, Schmidt T, Stowe K, Maier WF, Appl. Catal. A: Gen., 302(2), 257 (2006)
- Sultana A, Nanba T, Haneda M, Sasaki M, Hamada H, Appl. Catal. B: Environ., 101(1-2), 61 (2010)