DOI QR코드

DOI QR Code

탄화수소 환원제 변화가 Fe/ZSM5 촉매를 사용하는 탈질 HC-SCR 반응에 미치는 영향

Effect of Change of Hydrocarbon Reductant on HC-SCR over Fe/ZSM5 Catalyst

  • 김성수 (한국에너지기술연구소 폐자원 에너지 센터) ;
  • 김대영 (서강대학교 화공과) ;
  • 오세용 (서강대학교 화공과) ;
  • 유승준 (서남대학교 환경.화공학부) ;
  • 박정환 (순천향대학교 나노화공과) ;
  • 김진걸 (순천향대학교 나노화공과)
  • 투고 : 2011.03.15
  • 심사 : 2011.04.22
  • 발행 : 2011.04.30

초록

HC-SCR was conducted using Fe/ZSM5 catalyst coated over 200 cpi cordierite in the conditions of atomspheric pressure and $200^{\circ}C-500^{\circ}C$. Among the tested hydrocarbon reductants, isobutane (i-$C_4H_{10}$) showed the highest de-$NO_x$ yield of 69% at $320^{\circ}C$ with the mole ratio of reductant/$NO_x$ =1.0. De-$NO_x$ yield resulted by the change of alkane reductant was increased as the carbon number of alkane reductant was increased. The order of increase of de-$NO_x$ yield was proportional to the order of decrease of bonding energy between C and H of reductant, where the H abstraction step from alkane molecule could be the rate controlling step of HC-SCR.

키워드

참고문헌

  1. J. H. Lee, J .W. Park, S. S .Kim, S. J. Yoo and J. G. Kim ,"Kinetics of hydrogen rich ethanol as reductant for HC-SCR over $Al_{2}O_{3}$ supported Ag catalyst", Trans. Korean Hydrogen and New Energy Soc., Vol. 21, I. 6, 2010, pp 519-525
  2. J. G. Kim, M. J. Lee, H. M. Lee, J. Y. Jeon, S. S. Kim and S. S. Yoo, "Study of efficiency of hydrogen rich biodiesel as reductant for HC-SCR over $Al_{2}O_{3}$ supported Ag catalyst", Trans. Korean Hydrogen and New Energy Soc., Vol. 20, No. 3, 2009, pp 232-237
  3. 이헌주 외, 산업자원부 전력연구 개발사업 1차년도 연구보고서, R-2004- 0-096, 2005.
  4. Chen, H.-Y., 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, 1998, pp. 73-83. https://doi.org/10.1016/S0920-5861(98)00078-9
  5. A.A. Battison, J.H. Bitter and D.C. Koningsberger, "Reactivity of binuclear Fe complexes exchanged Fe/ZSM5 studied by XAFS, 2. SCR of NO with isobutane", J.Catal., 1,15, 2003, pp. 163-177.
  6. Feng, X. and Hall, W.K., "FeZSM-5: A durable SCR Catalyst for $NO_{x}$ removal from combustion Streams", J. Catal., Vol. 166, 1997, pp. 368-376. https://doi.org/10.1006/jcat.1997.1530
  7. Kogel, M., Sandoval, V.H., Schwieger, W., Tissler, A., and Turek, T., Catal. Lett. Vol. 51, 1998, pp. 23-25. https://doi.org/10.1023/A:1019049420697
  8. Lobree, L.J., H. Wang, I.-C., Reimer, J.A., and Bell, A.T., "Investigations of the State of Fe in H-ZSM-5", J. Catal., Vol. 186, 1999, pp. 242-253. https://doi.org/10.1006/jcat.1999.2548
  9. M. Rauscher, K. Kesore, R. Mönnig, W. Schwieger, A. Tiϐler, and T. Turek, "Preparation of a highly active Fe-ZSM-5 catalyst through solid-state ion exchange for the catalytic decomposition of $N_{2}O$", Appl. Catal. A: General, Vol. 184, 1999, pp. 249-256. https://doi.org/10.1016/S0926-860X(99)00088-5
  10. El-Malki, E.-M., R. A. van Santen, and W. M. H. Sachtler, "Active Sites in Fe/MFI Catalysts for $NO_{x}$ Reduction and Oscillating $N_{2}O$ Decomposition", J. Catal., Vol. 196, 2000, pp. 212-223. https://doi.org/10.1006/jcat.2000.3034
  11. Timur, V. Voskoboinikov, Hai-Ying Chen, Volfgang M.H. Sachter, "On the nature of active sites in Fe/ZSM-5 catalysts for $NO_{x}$ abatement", Appl. Catal. B: Environmental, Vol. 19, pp. 279-287 (2998). https://doi.org/10.1016/S0926-3373(98)00082-4
  12. O. Gorce, F. Baudin, C. Thomas, P. Da Costa, G. D-Mariadassou, "On the role of organic nitrogencontaining species as intermediates in the hydrocarbon- assisted SCR of $NO_{x}$", Appl. Catal. B: Environmental, Vol. 54, 2004, pp. 69-84. https://doi.org/10.1016/j.apcatb.2004.05.022
  13. Xiang Wang, Hai-Ying Chen, and Wolfgang, M. H. Sachtler, J. Catal., Vol. 197, pp. 281-291 (2001). https://doi.org/10.1006/jcat.2000.3097
  14. H. Y. Chen, T. Voskoboinikov, and W. M. H. Sachtler, J. Catal., Vol. 180, 1998, pp. 171-183. https://doi.org/10.1006/jcat.1998.2277
  15. X. Wang, H-Y. Chen, Wolfgang M. H. Sachtler, "Mechanism of the selective reduction of $NO_{x}$ over Co/MFI", J. Catal., Vol. 197, 2001, pp. 281-291. https://doi.org/10.1006/jcat.2000.3097