Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Evaluation of ZSM-5 supported metal catalyst for NOx removal

NOx 제거를 위한 금속 담지 ZSM-5 촉매 평가

  • Kim, Jin-Gul (Dept. of Chemical Eng., Soonchunhyang University) ;
  • Yoo, Seung-Joon (Dept. of Env. and Chemical Eng., Seonam University) ;
  • Kim, Seong-Soo (Waste Energy Research Center, Korea Institute of Energy Research)
  • 김진걸 (순천향대학교 나노화공과) ;
  • 유승준 (서남대학교 환경.화공학과) ;
  • 김성수 (한국에너지기술연구소 폐기물 에너지 연구센터)
  • Published : 2009.08.31
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Abstract

$NO_x$ reduction of stationary exhaust was performed at atmospheric condition and the temperature ranging from $200^{\circ}C$ to $500^{\circ}C$ over ZSM-5 supported metal catalyst. The characteristics of the prepared catalysts were investigated using the analytical techniques such as SEM, XRD, EDX, ICP and ITR. The results of EDX and ICP analysis demonstrated that the most part of transition metal existed on the exterior surface of support. Maximum de-$NO_x$ yield over Fe/ZSM-5 shown between $380^{\circ}C$ and $400^{\circ}C$ was presumed to be due to the maximum H2 reduction rate at $400^{\circ}C$ of ITR.

상압, $200^{\circ}C - 500^{\circ}C$ 조건에서 연소후 배기가스중의 질소산화물 감소 연구가 금속 담지 ZSM-5 촉매에서 수행되었다. 제조된 촉매의 특성은 XRD, SEM, EDX, ICP, ITR 분석 장치를 사용하여 분석하였다. EDX와 ICP 결과로부터 전이 금속이 촉매 표면에 분산된 것을 확인하였다. 금속 담지 ZSM-5 촉매중 Fe/ZSM-5가 최대 NOx 제거율을 보이는 온도 범위($380^{\circ}C-400^{\circ}C$)는 ITR 결과의 최대 환원 속도를 나타내는 온도 $400^{\circ}C$와 일치하므로, 환원 속도가 HC-SCR 반응 속도를 조절하는 것으로 판단된다.

Keywords

References

  1. Long, R. Q. and Yang, R. T., "Superior Fe/ZSM-5 catalysts for selective catalytic reduction of nitric oxide by ammonia", J. Am. Chem. Soc., Vol. 121, No. 23, pp. 5595-5598, 1999. https://doi.org/10.1021/ja9842262
  2. Chen, H. Y., Voskoboinikov, T., and Sachtler, W. M. H., "Reduction of NOx over Fe/ZSM-5 catalysts: Adsorption complexes and their reactivity toward hydrocarbons", J. Catal,,. Vol. 180, I. 2, pp. 171-183, 1999.
  3. Mori, T., Yamauchi, S., Yamanura, H., and Yatanabe, M., "New hollandite catalysts for the selective reduction of nitrogen monoxide with propene", Appl. Catal. A., Vol. 129, pp. L1-L8, 1995. https://doi.org/10.1016/0926-860X(95)00115-8
  4. Belver, C. and Vicente, M. A., "Fe-saponite pillared and impregnated catalysts: II. nature of the iron species active for the reduction of NOx with propene", Appl. Catal., Vol. 50, I. 4, pp. 227-234, 2004. https://doi.org/10.1016/j.apcatb.2004.01.009
  5. Petunchi, J. O. and Hall, W. K., "On the role of nitrogen dioxide in the mechanism of the selective reduction of NOx over Cu/ZSM-5 zeolite", Appl. Catal. B. Env., Vol. 2, pp. L17-L26, 1993. https://doi.org/10.1016/0926-3373(93)80043-D
  6. Kharas, K. C. C., Robota, H. J., and Liu, D. J., "Deactivation in Cu/ZSM-5 lean-burn catalysts", Applied Catalysis B: Environmental, Vol. 2, pp. 225-237, 1993. https://doi.org/10.1016/0926-3373(93)80050-N
  7. Perez-Ramirez, J., Garcia-Cortes, J. M., Kapteijn, F., Mul, G., and Moulijn, J. A., "Chracterization and performance of Pt-USY in the SCR of NOx with hydrocarbons under lean-burn conditions", Applied Catalysis B: Environmental Vol. 29, pp. 285-298, 2001. https://doi.org/10.1016/S0926-3373(00)00210-1
  8. Chen, H. Y., and Sachtler, W. M. H., "Activity and durability of Fe/ZSM-5 catalysts for lean burn NOx reduction in the presence of water vapor", Catal. Today, Vol. 42, I. 1-2, pp. 73-83, 1998. https://doi.org/10.1016/S0920-5861(98)00078-9
  9. Battison, A. A., Bitter J. H., and Koningsberger, D. C., "EXAFS characterization of the binuclear iron complex in overexchanged Fe/ZSM-5 structure and reactivity", Catal. Lett. Vol. 66, No. 1-2, pp. 75-79, 2000. https://doi.org/10.1023/A:1019079002486
  10. Marturano, P., Drozdova, L., Kogelbauer, A, and Prins, R. R., "Fe/ZSM-5 prepared by sublimation of FeCl3: The structure of the Fe species as determined by IR, MAS NMR, and EXAFS Spectroscopy", J. Catal., Vol. 1992, II. 1, pp. 236-247, 2000. https://doi.org/10.1006/jcat.2000.2837
  11. Li, Y. and Armor, J. J. N., "Selective catalytic reduction of NOx with methane over metal exchanged zeolites", Appl. Catal. B., Env., Vol. 2, I. 2, pp. 239-256, 1993. https://doi.org/10.1016/0926-3373(93)80051-E
  12. Pirngruber, G. D., Frunz, L., and Pierterse, J. A. Z., "The synergy between Fe and Ruthenium in N2O decomposition over FeRu-Fer catalysts: A mechanistic explanation", J. Catal., Vol. 243, I. 2 pp. 340-349, 2006. https://doi.org/10.1016/j.jcat.2006.08.006
  13. Younghooon, M. L. and Sachtler. W. M. H, "Posssible reasons for the superior performance of zeolite based catalysts in the reduction of nitrogen oxides", Catal. Today, Vol. 114, I.4, pp. 340-345, 2006. https://doi.org/10.1016/j.cattod.2006.02.036