Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
권호 표지

Effect of Vanadium Oxide Loading on SCR Activity and $SO_2$ Resistance over $TiO_2$-Supported $V_2O_5/TiO_2$ Commercial De-NOx Catalysts

상용 $V_2O_5/TiO_2$ 촉매의 바나듐 함량이 SCR 반응성과 $SO_2$ 내구성에 미치는 영향

  • Park, Kwang Hee (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University) ;
  • Cha, Wang Seog (Department of Environmental Engineering, Kunsan National University)
  • 박광희 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 차왕석 (군산대학교 환경공학과)
  • Published : 2012.10.10
⟨ Previous Next ⟩

Abstract

We investigated vanadium (V) loading effects on selective catalytic reduction (SCR) activity and $SO_2$ resistance using commercial SCR catalysts applied on a power plant and incinerator with different amounts of V loading. These catalysts were characterized using XRD, Raman, ICP, BET analysis and found to contain $TiO_2$ (anatase) supported $V_2O_5$ added $WO_3$ and $SiO_2$. The SCR activity of the catalysts increased by increasing either the $V_2O_5$ or the $WO_3$ loading amounts; the SCR activity of the catalysts added $WO_3$ is higher than that of $WO_3$-free catalysts. As the V loading amount in the catalyst increased, the $SO_2$ durability decreased. The $V_2O_5$ supported $TiO_2$ catalyst added $WO_3$ and $SiO_2$ inhibits the deactivation process by $SO_2$. The $SO_2$ resistance of catalysts added $SiO_2$ is higher than that of catalysts added $WO_3$.

바나듐 함량이 각기 다른 소각로 및 발전소에 사용된 6개의 국내외 상용촉매를 이용하여 바나듐 함량이 SCR활성 및 $SO_2$ 내구성에 미치는 영향을 조사하였다. XRD, Raman, ICP, BET 분석결과 6개 상용촉매 모두 아나타제 $TiO_2$에 바나듐이 고루 담지된 촉매이며, $WO_3$와 $SiO_2$가 포함되어 있었다. SCR활성에 있어서, 바나듐함량이 증가할수록 SCR활성은 증가하는 경향이 있고, $WO_3$가 초촉매로 첨가된 촉매가 더 높은 SCR 활성을 보인다. $SO_2$ 내구성에 있어서, 촉매의 바나듐함량이 증가할수록 부정적인 요소로 작용한다. 그러나 $WO_3$와 $SiO_2$첨가는 부정적인 요소를 억제한다. 특히, $SiO_2$가 첨가된 촉매는 $WO_3$이 첨가된 촉매 보다는 $SO_2$에 대한 내구성을 더욱 증가시킨다.

Keywords

References

  1. H. Bosch and F. Janssen, Catal. Today, 2, 369 (1988). https://doi.org/10.1016/0920-5861(88)80002-6
  2. L. J. Alemany and F. Berti, Appl. Catal. B, 10, 299 (1996). https://doi.org/10.1016/S0926-3373(96)00032-X
  3. S. M. Cho, Chem. Eng. Prog. Air Pollut. Control, 90, 39 (1994).
  4. S. C. Wood, Chem. Eng. Prog. Air Pollut. Control, 90, 33 (1994).
  5. H. H. Phil, M. P. Reddy, P. A. Kumar, L. K. Ju, and J. S. Hyo, Appl. Catal. B, 78, 301 (2008). https://doi.org/10.1016/j.apcatb.2007.09.012
  6. K. H. Park, J. Y. Lee, S. H. Hong, S. H. Choi, and S. C. Hong, J. Korean Ind. Eng. Chem., 19, 376 (2008).
  7. I. E. Wachs, Catal. Today, 27, 437 (1996). https://doi.org/10.1016/0920-5861(95)00203-0
  8. I. Giakoumelou, C. Fountzoula, C. Kordulis, and S. Boghosian, J. Catal., 239, 1 (2006). https://doi.org/10.1016/j.jcat.2006.01.019
  9. P. G. W. A. Kompio, A. Bruckner, F. Hipler, G. Auer, E. Loffler and W. Grunert, J. Catal., 286 237 (2012). https://doi.org/10.1016/j.jcat.2011.11.008
  10. J. P. Dunn, P. R. Koppula, H. G. Stenger, and I. E. Wachs, Appl. Catal. B, 19, 103 (1998). https://doi.org/10.1016/S0926-3373(98)00060-5
  11. G. D. Panagiotou, T. Petsi, K. Bourikas, C. Kordulis, and A. Lycourghiotis, J. Catal., 262, 266 (2009). https://doi.org/10.1016/j.jcat.2009.01.003
  12. T. Petsi, G. D. Panagiotou, C. S. Garoufalis, C. Kordulis, P. Stathi, Y. Deligiannakis, A. Lycourghiotis, and K. Bourikas, Chem. Eur. J., 15, 13090 (2009). https://doi.org/10.1002/chem.200900760
  13. K. Bourikas, J. Stavropoulos, C. S. Garoufalis, C. Kordulis, T. Petsi, and A. Lycourghiotis, Chem. Eur. J., 17, 1201 (2011). https://doi.org/10.1002/chem.201001370
  14. T. Petsi, G. D. Panagiotou, K. Bourikas, C. Kordulis, G. A. Voyiatzis, and A. Lycourghiotis, Chem. Cat. Chem., 3, 1072 (2011).
  15. G. D. Panagiotou, T. Petsi, K. Bourikas, A. G. Kalampounias, S. Boghosian, C. Kordulis, and A. Lycourghiotis, J. Phys. Chem. C, 114, 11868 (2010). https://doi.org/10.1021/jp101333t
  16. L. Lietti, P. Forzatti, and F. Bregani, Ind. Eng. Chem. Res., 35, 3884 (1996). https://doi.org/10.1021/ie960158l
  17. T. S. Joakim, R. Thogersen, and N. White, Ammonium bisulphate inhibition of SCR catalysts, Haldor Topsoe Inc.
  18. M. Kobayashi, R. Kuma, S. Masaki, and N. Sugishima, Appl. Catal. B, 60, 173 (2005). https://doi.org/10.1016/j.apcatb.2005.02.030