This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation of Spatially Resolved Performance of NOx Adsorber Catalysts
Technical Paper
2009-01-0275
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A novel laboratory methodology has been developed and applied to evaluate performance of NOx Adsorber catalysts, based on the detailed analysis of micro-core samples obtained from various locations in a full-size catalyst. The technique includes a protocol for evaluating various aspects of NOx performance, as well as direct measurements of the amount of sulfur on the catalyst.
This method was used to determine the NOx performance and distribution of sulfur loading on several engine aged catalysts. It showed the ability to differentiate poor NOx performance due to insufficient desulfation from that due to thermal degradation. This method further quantifies different forms of sulfur that are present on the catalyst. These forms of sulfur are distinguished by the temperature at which they are removed. In addition, the aspects of sulfur behavior that are important to this technique are discussed.
Recommended Content
Authors
Citation
Li, J., Currier, N., Yezerets, A., Chen, H. et al., "Evaluation of Spatially Resolved Performance of NOx Adsorber Catalysts," SAE Technical Paper 2009-01-0275, 2009, https://doi.org/10.4271/2009-01-0275.Also In
References
- Kim, D.H. Kwak, J.H. Wang, X. Szanyi, J. Peden, C.H.F. 2008 Sequential high temperature reduction, low temperature hydrolysis for the regeneration of sulfated NOx trap catalysts Catal. Today 136
- Choi, J.-S. Partridge, W.P. Daw C.S. 2007 Sulfur impact on NOx storage, oxygen storage, and ammonia breakthrough during cyclic lean/rich operation of a commercial lean NOx trap Appl. Cat. B: Environ 77
- Kwak, J.H. Kim, D.H. Szanyi, J. Peden, C.H.F. 2008 Excellent sulfur resistance of Pt/BaO/CeO2 lean NOx trap catalysts Appl. Cat. B: Environ. 84
- Fang, H.L. Wang, J.C. Xu, R.C. Wan, C.Z. Howden K. Sulfur Management of Nox Adsorber Technology for Diesel Light-Duty Vehicle and Truck Applications presented at SAE World Congress, 033245 2003
- Epling, W. S. Yezerets, A. Currier N.W. 2007 The effects of regeneration conditions on NOX and NH3 release from NOX storage/reduction catalysts Appl. Cat. B: Environ. 74
- Toops, T.J. Smith, D.B. Partridge W.P. 2005 Quantification of the in situ DRIFT spectra of Pt/K/-A12O3 NOx adsorber catalysts Appl. Cat. B: Environ. 58
- Mulla, S. Chen, N. Delgass, W. N. Epling, W. S. Ribeiro, F. H. 2006 Reaction of NO and O2 to NO2 on Pt: Kinetics and catalyst deactivation J. Cat. 241
- Epling, W. S. Parks, J. E. Currier N. W. Yezerets, A. 2004 Further evidence of multiple NOx sorption sites on NOx storage/reduction catalysts Catalysis Today 96
- Epling, W. S. Campbell, L. E. Yezerets, A. Currier, N. W. Parks J. E. II 2004 Overview of the fundamental reactions and degradation mechanisms of NOx storage/reduction catalysts Catalysis Reviews 46
- Epling, W. S. Campbell G. Parks, J. E. 2003 The effect of CO2 and H2O on the NOx destruction performance of a model NOx storage/reduction catalysts Catalysis Letters 90
- Xu, J. Clayton, R.D. Balakotaiah, V. Harold, M.P. 2008 Experimental and microkinetic modeling of steady-state NO reduction by H2 on Pt/BaO/Al2O3 monolith catalysts Appl. Catal. B. Environ. 77
- Sharma, M. Clayton, R.D. Harold, M.P. Balakotaiah, V. 2007 Multiplicity in Lean NOx Traps Chem Engng. Sci. 62
- Ingram, G.A. Surnilla, G. On-Line Estimation of Sulfation Levels in a Lean Nox Trap presented at SAE World Congress, 020731 2002
- Asik, J. R. Dobson, D. A. Meyer G. M. Suppression of Sulfide Emission During Lean Nox Trap Desulfation presented at SAE World Congress 011299 2001
- Stroia, B. J. Currier, N.W. Li, J. England, R.D. Bush, J. W. Hess H. Critical Performance and Durability Parameters of an Integrated Aftertreatment System used to Meet 2007 Tier II Emission Standards presented at SAE World Congress 080769 2008