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1D Model of a Copper Exchanged Small Pore Zeolite Catalyst Based on Transient SCR Protocol
Technical Paper
2013-01-1578
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Urea-selective catalytic reduction (SCR) catalysts are the leading aftertreatment technology for diesel engines, but there are major challenges associated with meeting future NOx emission standards, especially under transient drive cycle conditions that include large swings in exhaust temperatures. Here we present a simplified, transient, one-dimensional integral model of NOx reduction by NH₃ on a commercial small-pore Cu-zeolite urea-SCR catalyst for which detailed kinetic parameters have not been published. The model was developed and validated using data acquired from bench reactor experiments on a monolith core, following a transient SCR reactor protocol. The protocol incorporates NH₃ storage, NH₃ oxidation, NO oxidation and three global SCR reactions under isothermal conditions, at three space velocities and at three NH₃/NOx ratios. NH₃ storage parameters were obtained from separate TPD experiments and were used in the individual kinetic models to identify the rate parameters of various SCR reaction pathways. With minimal parameter tuning, the model predicts the observed dynamic catalyst behavior and is proposed as a promising candidate for future studies of aging effects and model-based controls development.
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Devarakonda, M., Lee, J., Muntean, G., Pihl, J. et al., "1D Model of a Copper Exchanged Small Pore Zeolite Catalyst Based on Transient SCR Protocol," SAE Technical Paper 2013-01-1578, 2013, https://doi.org/10.4271/2013-01-1578.Also In
References
- Diesel Emission Control DieselNet Technology Guide Ecopoint Inc. Mississauga, Ontario, Canada 2002 http://www.dieselnet.com/tech/engine_control.html October 22 2012
- Lietti , L. ; Nova , I. ; Tronconi , E. ; Forzatti , P. Transient Kinetic Study of the SCR DeNO x Reaction Catalysis Today 1998 45 88 92
- Tronconi , E. ; Forzatti , P. Adequacy of Lumped Parameter Models for SCR Reactors with Monolith Structure AIChE Journal 1992 38 201 209
- Heck , R. Catalytic Abatement of Nitrogen Oxides-Stationary Applications Catalysis Today 1999 53 519 523
- Nova , I. ; Lietti , L. ; Tronconi , E. ; Forzatti , P. Transient Response Method Applied to the Kinetic Analysis of the DeNO x -SCR Reaction Chemical Engineering Science 2001 56 1229 1237
- Tronconi , E. ; Lietti , L. ; Forzatti , P. ; Malloggi , S. Experimental and Theoretical Investigation of the Dynamics of the SCR-DeNO x Reaction Chemical Engineering Science 1996 51 2965 2970
- Koebel , M. ; Elsener , M. ; Kleemann , M. A Promising Technique to Reduce NOx Emissions from Automotive Diesel Engines Catalysis Today 2000 59 335 345
- Schär , C. , Onder , C. , Geering , H. , and Elsener , M. Control of a Urea SCR Catalytic Converter System for a Mobile Heavy Duty Diesel Engine SAE Technical Paper 2003-01-0776 2003 10.4271/2003-01-0776
- Chatterjee , D. , Burkhardt , T. , Weibel , M. , Nova , I. et al. Numerical Simulation of Zeolite- and V-Based SCR Catalytic Converters SAE Technical Paper 2007-01-1136 2007 10.4271/2007-01-1136
- Cavataio , G. , Jen , H. , Warner , J. , Girard , J. et al. Enhanced Durability of a Cu/Zeolite Based SCR Catalyst SAE Int. J. Fuels Lubr. 1 1 477 487 2009 10.4271/2008-01-1025
- Fedeyko , J. , Chen , H. , Ballinger , T. , Weigert , E. et al. Development of Thermally Durable Cu/SCR Catalysts SAE Technical Paper 2009-01-0899 2009 10.4271/2009-01-0899
- Schuler , M. ; Votsmeier , M. ; Kiwic , P. ; Gieshoff , J. ; Hauptmann , W. ; Drochner , A. ; Vogel , H. NH 3 -SCR on Fe Zeolite Catalysts - From Model Set-up to NH 3 Dosing Chemical Engineering Journal 2009 154 333 340
- Luo , J. ; Hou , X. ; Wijayakoon , P. ; Schmieg , S. ; Li , W. ; Epling , W. Spatially Resolving SCR Reactions over a Fe/Zeolite Catalyst Applied Catalysis B: Environmental 2011 102 110 119
- Schmieg , S. and Lee , J. Evaluation of Supplier Catalyst Formulations for the Selective Catalytic Reduction of NO x With Ammonia SAE Technical Paper 2005-01-3881 2005 10.4271/2005-01-3881
- Olsson , L. ; Sjovall , H. ; Blint , R. A Kinetic Model for Ammonia Selective Catalytic Reduction over Cu-ZSM5 Applied Catalysis B: Environmental 2008 81 203 217
- Grossale , A. ; Nova , I. ; Tronconi , E. ; Chatterjee , D. ; Wiebel , M. The Chemistry of the NO/NO 2 -NH 3 ‘fast’ SCR Reaction over Fe-ZSM5 Investigated by Transient Reaction Analysis Journal of Catalysis 2008 256 312 322
- Grossale , A. ; Nova , I. ; Tronconi , E. Study of a Fe-zeolite based System as NH 3 -SCR Catalyst for Diesel Exhaust Aftertreatment Catalysis Today 2008 136 18 27
- Grossale , A. ; Nova , I. ; Tronconi , E. Ammonia Blocking of the “Fast SCR” Reactivity over a Commercial Fezeolite Catalyst for Diesel Exhaust Aftertreatment Journal of Catalysis 2009 265 141 147
- Colombo , M. ; Nova , I. ; Tronconi , E. A Comparative Study of the NH 3 -SCR Reactions over a Cu-zeolite and a Fe-zeolite Catalyst Catalysis Today 2010 151 223
- Olsson , L. ; Sjovall , H. ; Blint , R. Detailed Kinetic Modeling of NO x Adsorption and NO Oxidation over Cu-ZSM-5 Applied Catalysis B: Environmental 2009 87 200 210
- Sjovall , H. ; Blint , R. ; Olsson , L. Detailed Kinetic Modeling of NH 3 and H 2 O Adsorption and NH 3 Oxidation over Cu-ZSM5 Journal of Physical Chemistry C 2009 113 1393 1405
- Wang , T.J. ; Baek , S.W. ; Kwon , H.J. ; Kim , Y.J. ; Nam , I.S. ; Cha , M.S. ; Yeo , G.K. Kinetic Parameter Estimation of a Commercial Fe-Zeolite SCR Industrial and Engineering Chemistry Research 2011 50 2850 2864
- Pant , A. ; Schmieg , S. Kinetic Model of NO x SCR Using Urea on Commercial Cu-Zeolite Catalyst Industrial and Engineering Chemistry Research 2011 50 5490 5498
- Kim , J. , Cheng , Y. , Patterson , J. , Laing , P. et al. Modeling Study of Urea SCR Catalyst Aging Characteristics SAE Technical Paper 2007-01-1580 2007 10.4271/2007-01-1580
- Devarakonda , M. ; Tonkyn , R. ; Tran , D. ; Lee , J. ; Herling , D. Modeling Species Inhibition of NO Oxidation in Urea- SCR Catalysts for Diesel Engine NO x Control ASME Journal of Engineering for Gas Turbines and Power 2011 133 092805
- Hou , X. , Epling , W. , Schmieg , S. , and Li , W. Cu-Zeolite SCR Catalyst Thermal Deactivation Studied with FTIR Spatial Resolution SAE Int. J. Engines 4 1 1298 1318 2011 10.4271/2011-01-1138
- Cheng , Y. and Huang , Y. Deactivation of Cu/Zeolite SCR Catalyst under Lean-Rich Aging Conditions SAE Technical Paper 2010-01-1180 2010 10.4271/2010-01-1180
- Huang , Y. , Cheng , Y. , and Lambert , C. Deactivation of Cu/Zeolite SCR Catalyst Due To Reductive Hydrothermal Aging SAE Int. J. Fuels Lubr. 1 1 466 470 2009 10.4271/2008-01-1021
- Cheng , Y. ; Hoard , J. ; Lambert , C. ; Kwak , J. ; Peden , C. NMR Studies of Cu/zeolite SCR Catalysts Hydrothermally Aged with Urea Catalysis Today 2008 136 34 39
- Kamasamudram , K. ; Henry , C. ; Chen , X. ; Currier , N. ; Yezerets , A. ; Chen , H. ; Castagnola , M. Proceedings of Directions in Engine Efficiency and Emissions Research (DEER) Conference Detroit, MI September 27 30 2010 United States Department of Energy Washington D.C. 2010
- Schmieg , S. ; Oh , S. ; Kim , C. ; Brown , D. ; Lee , J. ; Peden , C. ; Kim , D. Thermal Durability of Cu-CHA NH 3 -SCR catalysts for diesel NOx reduction Catalysis Today 2011 184 252 261
- Choosing a Solver Mathworks Inc Natick, MA, USA http://www.mathworks.com/help/toolbox/simulink/ug/f11-69449.html June 27 2011
- DeLand , S.B. Development and Parameter Identification of an Iron Zeolite SCR Catalyst Model Using Reactor Data M.S. Thesis Michigan Technological University 2010
- Kamasamudram , K. ; Currier , N. ; Chen , X. ; Yezerets , A. Overview of the Practically Important Behaviors of Zeolite Based Urea-SCR Catalysts using Compact Experimental Protocol Catalysis Today 2010 151 212 222
- Chakravarthy , K. Technical Communication 2010