DeNOx by SCR (Selective Catalytic Reduction) Using LPG as a Reductant

LPG-SCR에 의한 질소산화물 제거

  • Kim, Moon-Chan (Department of Environmental Engineering, Cheongju University)
  • 김문찬 (청주대학교 환경공학과)
  • Published : 2012.12.10


In this study, selective catalytic reduction (SCR) reaction was performed using liqufied petroleum gas (LPG) as a reductant for removing NOx. The catalysts were manufactured with different amounts of Cu and Fe supported on HZSM-5 in order to remove NOx. The NOx conversion ratio was studied with changing the temperature and the catalyst amount. The catalysts were manufactured by calcination with flowing the ambient air at $500^{\circ}C$ for three hours. Cupper of 1~4 wt% and iron of 0.5~2 wt% were supported on HZSM-5 of which Si/Al ratio were 80. According to the reaction results, the catalyst which Cu of 3 wt% supported on HZSM-5 showed the highest conversion rate. XRD, XPS, and TPR analysis were also performed for the characterization of catalysts.


  1. A. Fritz and V. Pitchon, Appl. Catal. B, 13, 1 (1997).
  2. E. R. Alley, Air Quality Control Handbook, 25, 1 (1998).
  3. G. Baumbach, Air Quality Control, 105 (1996).
  4. $CO_2$ Emission from Fuel Combustion, IEA (2008).
  5. C. Lee, No decomposition on metal oxide-containmg mordenites, Hanyang University, 1 (1991).
  6. S. Kim, A study on the development of de NOx technology and NOx monitoring technology for disel engine, Korea Advanced Institute of Science and Technology (1993).
  7. T. Miyadera, Appl. Catal. B, 16, 155 (1998).
  8. Y. Ukisu and T. Miyadera, Catal. Lett., 39, 265 (1996).
  9. T. Chafik, S. Kameoka, Y. Ukisu, and T. Miyadera, J. Mol. Catal. A, 136, 203 (1998).
  10. L. Chen, H. Y. Chen, J. Lin, and K. L. Tan, FTIR, XPS and TPR Studies of $N_2O$ Decomposition over Cu-ZSM-5, 28, 115 (1999).
  11. Y. Wan, J. Ma, Z. Wang, W. Zhou, and S. Kaliaguine, J. Catal., 227, 242 (2004).