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Impact of Hydrothermal Aging on the Formation and Decomposition of Ammonium Nitrate on a Cu/zeolite SCR Catalyst

Published March 28, 2017 by SAE International in United States
Impact of Hydrothermal Aging on the Formation and Decomposition of Ammonium Nitrate on a Cu/zeolite SCR Catalyst
Citation: Ottinger, N., Xi, Y., Keturakis, C., and Liu, Z., "Impact of Hydrothermal Aging on the Formation and Decomposition of Ammonium Nitrate on a Cu/zeolite SCR Catalyst," SAE Int. J. Engines 10(4):1646-1652, 2017,
Language: English


  1. California Environmental Protection Agency, “Proposed Optional Low NOx Standards for Heavy Duty Engines, Extended Warranties, and Heavy Duty Zero Emission Vehicles Certification,” 2013,
  2. Hilliard, J. and Wheeler, R., "Nitrogen Dioxide in Engine Exhaust," SAE Technical Paper 790691, 1979, doi:10.4271/790691.
  3. Pipho, M., Kittelson, D., and Zarling, D., "NO2 Formation in a Diesel Engine," SAE Technical Paper 910231, 1991, doi:10.4271/910231.
  4. Finesso, R., Misul, D., and Spessa, E., "Estimation of the Engine-Out NO2/NOx Ratio in a EURO VI Diesel Engine," SAE Technical Paper 2013-01-0317, 2013, doi:10.4271/2013-01-0317.
  5. Johannessen, T., Schmidt, H., Svagin, J., Johansen, J. et al., "Ammonia Storage and Delivery Systems for Automotive NOx Aftertreatment," SAE Technical Paper 2008-01-1027, 2008, doi:10.4271/2008-01-1027.
  6. Kamasamudram, K., Currier, N. W., Chen, X., Yezerets, A., “Overview of the Practically Important Behaviors of Zeolite-based Urea-SCR Catalysts, Using Compact Experimental Protocol,” Catal. Today 151:212-222, 2010.
  7. Xi, Y., A. Ottinger, N., and Liu, Z., "Effect of Hydrothermal Aging on the Catalytic Performance and Morphology of a Vanadia SCR Catalyst," SAE Technical Paper 2013-01-1079, 2013, doi:10.4271/2013-01-1079.
  8. Saunders, H. L., “The Decomposition of Ammonium Nitrate by Heat,” J. Chem. Soc., Trans. 121:698-711, 1922, doi:10.1039/CT9222100698.
  9. Feick, G., Hainer, R. M., “On the Thermal Decomposition of Ammonium Nitrate. Steady-state Reaction Temperatures and Reaction Rate.” J. Am. Chem. Soc. 76(22):5860-5863, 1954.
  10. Rosser, W. A., Inami, S. H., Wise, H., “The Kinetics of Decomposition of Liquid Ammonium Nitrate,” J. Phys. Chem. 67(9):1753-1757, 1963, doi:10.1021/j100803a004.
  11. Colombo, M., Nova, I., Tronconi, E., “Detailed Kinetic Modeling of the NH3-NO/NO2 SCR Reactions Over a Commercial Cu-zeolite Catalyst for Diesel Exhaust Aftertreatment,” Catal. Today 197:243-255, 2012.
  12. Tronconi, E., Nova, I., “The Kinetic Mechanism of NH3-SCR over V2O5-WO3/TiO2, Fe-, and Cu-zeolite Catalysts,” CLEERS Workshop Presentation, 2016.
  13. Brunauer, S., Emmett, P. H., Teller, E., “Adsorption of Gases in Multimolecular Layers,” J. Am. Chem. Soc. 60(2):309-319, 1938.
  14. Luo, J., An, H., Kamasamudram, K., Currier, N. et al., "Impact of Accelerated Hydrothermal Aging on Structure and Performance of Cu-SSZ-13 SCR Catalysts," SAE Int. J. Engines 8(3):1181-1186, 2015, doi:10.4271/2015-01-1022.
  15. Johnston, H. S., Foering, L., Tao, Y., Messerly, G. H., “The Kinetics of the Thermal Decomposition of Nitric Acid Vapor,” J. Am. Chem. 73(5):2319-2321, 1951.
  16. Theoret, A., Sandorfy, C., “Infrared Spectra and Crystalline Phase Transition of Ammonium Nitrate,” Canadian J. Chem. 42:57-62, 1964.
  17. Wu, H.B., Chan, M. N., Chan, C. K., “FTIR Characterization of Polymorphic Transformation of Ammonium Nitrate,” Aerosol Sci. Technol. 41:581-588, 2007.
  18. Liu, F., Hong, H., “Selective Catalytic Reduction of NO with NH3 over Manganese Substituted Iron Titanate Catalyst: Reaction Mechanism and H2O/SO2 Inhibition Mechanism Study,” Catal. Today 153, 2010, pg. 70-76, doi:10.1016/j.cattod.2010.02.043.
  19. Ruggeri, M. P., Grossale, A., Nova, I., Tronconi, E., Jirglova, H., Sobalik, Z., “FTIR In Situ Mechanistic Study of the NH3-NO/NO2 Fast SCR Reaction over a Commercial Fe-ZSM-5 Catalyst,” Catal. Today 184:107-114, 2012.

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