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Development of a Kinetic Model to Evaluate Water Storage on Commercial Cu-Zeolite SCR Catalysts during Cold Start
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Commercial Cu-Zeolite SCR catalyst can store and subsequently release significant amount of H2O. The process is accompanied by large heat effects. It is critical to model this phenomenon to design aftertreatment systems and to provide robust tuning strategies to meet cold start emissions and low temperature operation. The complex reaction mechanism of water adsorption and desorption over a Cu-exchanged SAPO-34 catalyst at low temperature was studied through steady state and transient experiments. Steady state isotherms were generated using a gravimetric method and then utilized to predict water storage interactions with respect to feed concentration and catalyst temperature. Transient temperature programmed desorption (TPD) experiments provided the kinetic information required to develop a global kinetic model from the experimental data. The model captures fundamental characteristics of water adsorption and desorption accompanied by the heat effects. Steady state test cell and transient truck data were used as a part of the water storage model verification and validation. The kinetic model predicts water storage well, aiding in system evaluation of level control to understand its impact on cold start emissions.
CitationSrinivasan, A., Joshi, S., Tang, Y., Wang, D. et al., "Development of a Kinetic Model to Evaluate Water Storage on Commercial Cu-Zeolite SCR Catalysts during Cold Start," SAE Technical Paper 2017-01-0968, 2017, https://doi.org/10.4271/2017-01-0968.
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- Granger, P., Parvulescu, V.I., “Catalytic NOx Abatement Systems for Mobile Sources: From Three-Way to Lean Burn after-Treatment Technologies”. Chem. Rev. 111(5):3155-3207, 2011, doi: 10.1021/cr100168g.
- Busca, G., Lietti, L., Ramis, G and Berti, F. “Chemical and mechanistic aspects of the selective catalytic reduction of NO(x) by ammonia over oxide catalysts: A review”. Appl Cat B: Env. 18(1-2):1-36, 1998.
- Baik, J.H., Yim, S.D., Nam, I.S, Mok, Y.S et al., “Control of NOx emissions from diesel engine by selective catalytic reduction (SCR) with urea”. Topics in Cat. 30-31:37-42, 2004.
- Busca, G., Larrubia, M.A., Arrighi, L, Ramis, G., “Catalytic abatement of NOx: Chemical and mechanistic aspects”. Catalysis Today. 107-108:139-148, 2005.
- Taylor, K., “Nitric oxide catalysis in automotive exhaust systems”. Catalysis Reviews. 35(4):457-481, 1993.
- Iwamoto, M., Hamada, H., “Removal of nitrogen monoxide from exhaust gases through novel catalytic processes”. Catalysis Today. 10(1):57-71, 1991.
- Komatsu, T., Nunokawa, M., Moon, I.S., Namba, S., “Kinetic Studies of Reduction of Nitric Oxide with Ammonia on Cu2+-Exchanged Zeolites”. J. Catalysis. 148(2):427-437, 1994.
- Moreno-Tost, R., Santamaria-Gonzalez, J., Rodriguez-Castellon, E., Jimenez-Lopez, A et al., “Selective catalytic reduction of nitric oxide by ammonia over Cu-exchanged Cuban natural zeolites”. Appl Cat B: Env. 50 (4):279-288, 2004.
- Frache, A., Palella, B.I., Cadoni, M., Pirone, R et al., “CuAPSO-34 catalysts for N2O decomposition in the presence of H2O. A study of zeolitic structure stability in comparison to Cu-SAPO-34 and Cu-ZSM-5”. Top in Catal. 22(1-2):53-57, 2003.
- Kwak, J.H., Tran, D., Burton, S.D., Szanyi, J., “Effects of hydrothermal aging on NH3-SCR reaction over Cu/zeolites”. J. Catal. 287:203-209, 2012.
- Fickel, D.W., Lauterbach, D., Lobo, R.F., “The ammonia selective catalytic reduction activity of copper-exchanged small-pore zeolites”. Appl. Catal. B. 102:441-448, 2011.
- Kwak, J.H., Tonkyn, R.G., Hun, D.H, Szanyi, J et al., “Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3," J Catal. 275(2):187-190, 2010.
- Martínez-Franco, R., Moliner, M., Franch, C., Kustov, A., & Corma, A. “Rational direct synthesis methodology of very active and hydrothermally stable cu-SAPO-34 molecular sieves for the SCR of NOx”. Appl Catal B: Env, 127: 273-280, 2012. doi:10.1016/j.apcatb.2012.08.034
- Gao, F., Walter, E.D., Washton, N.M., Szanyi, J. et al., “Synthesis and Evaluation of Cu-SAPO-34 Catalysts for Ammonia Selective Catalytic Reduction”. ACS Catalysis, 3(9): 2083-2093, 2013. doi: 10.1021/cs4004672
- Bacher, V., Perbandt, C., Schwefer, M., Siefert, R., Pinnow, S., & Turek, T. “Kinetics of ammonia consumption during the selective catalytic reduction of NOx over an iron zeolite catalyst”. Appl Catal B: Env. 162:158-166, 2015. doi:10.1016/j.apcatb.2014.06.039
- Schmeisser, V., Weibel, M., Sebastian Hernando, L., Nova, I. et al., "Cold Start Effect Phenomena over Zeolite SCR Catalysts for Exhaust Gas Aftertreatment," SAE Int. J. Commer. Veh. 6(1):190-199, 2013, doi:10.4271/2013-01-1064.
- Joshi S.Y., Kumar A., Luo J., Kamasamudram K et al., Appl Catal B: Env.165:27-35, 2015.
- Sing, K. S. W., Haul, R. A.W., Moscou, L., Pierotti, R.A. et al., Pure Appl. Chem., 57:603-619, 1985.
- Zhang, K., Lively, R. P., Noel, J. D., Dose, M. E. et al., Langmuir, 28: 8664-8673, 2012
- Liu, Q., Cheung, N.C.O., Garcia-Bennett, A. E., Hedin, N., ChemSusChem,4: 91-97, 2011
- Thommes, M., Mitchell, S., Pérez-Ramírez, J., J. Phys. Chem. C,116: 18816-18823, 2012
- Chen, H. J., Cui, Q., Li, Q. G., Zheng, K. et al., Renewable Sustainable Energy, 5: 053129 1-13, 2013
- Kim, J.-H., Lee, C.-H., Kim, W. -S., Lee, J. -S et al., J. Chem. Eng. Data, 48: 137-141, 2003
- Smith, L., Cheetham, A. K., Morris, R. E., Marchese, L et al., Chen, J.,Science, 271: 799-802, 1996