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Modeling of Phosphorus Poisoning Phenomena over Diesel Oxidation Catalysts
Technical Paper
2010-01-0884
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
To predict how DOC performance deteriorates with a lifetime of use, it is important to understand the mechanisms of catalyst aging. In off-road applications, due to the continuous high load usage and relatively high oil consumption rate, poisoning of the Diesel Oxidation Catalyst (DOC) with Phosphorus may become an important durability issue. In this study, 3D modeling has been performed to study the P poisoning mechanism and 1D modeling has been performed to investigate P poisoning parameters that effect DOC performance deterioration.
From postmortem analysis on engine aged DOCs there is a general trend that P deposits tend to collect at the outermost catalyst surface. Two types of 3D modeling were performed in this study to understand how P migrates into the bulk of the catalyst. In one case, P migrates into catalyst layer by gas phase diffusion and in the other case P first adsorbs on the catalyst surface and then migrates by solid diffusion into the bulk. The calculated result for the latter model showed a P poisoning trend that compared well to the engine aged, P poisoned DOC.
1D modeling of catalyst performance was based on information obtained from the 3D modeling. The catalyst performance was expressed by an Arrhenius type equation, loss of active sites by a decrease of the pre-exponential factor and deterioration of gas diffusion to the catalyst layer by the activation energy factor. Results will be compared to the catalyst durability requirements after 8000 h of catalyst usage.
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Nagata, M. and Tanaka, Y., "Modeling of Phosphorus Poisoning Phenomena over Diesel Oxidation Catalysts," SAE Technical Paper 2010-01-0884, 2010, https://doi.org/10.4271/2010-01-0884.Also In
References
- Geske, D.M. “Preparing the off-road toolbox” Diesel Progress May 2009 75 5
- Kong, Yougen Kozakiewicz, Tom Johnson, Randy Huffmeyer, Chris Huckaby, Jon Abel, John Baurley, Jon Duffield, Kendall “Active DPF regeneration for 2007 diesel engines” Society of Automotive Engineers, [Special Publication] SP (2005), SP-1986(Particulates-Emission Control; NOx Emission Control; Integrated Emissions Systems; Emissions Measurements) 13 19
- Premchand, Kiran C. Johnson, John H. Yang, Song-Lin “Development of a 1-D CPF model to simulate active regeneration of a diesel particulate filter” Society of Automotive Engineers, [Special Publication] SP (2009), SP-2255(Diesel Exhaust Emission Control Modeling) 231 254
- Singh, Navtej Rutland, Christopher J. Foster, David E. Narayanaswamy, Kushal He, Yongsheng “Investigation into different DPF regeneration strategies based on fuel economy using integrated system simulation” Society of Automotive Engineers, [Special Publication] SP (2009), SP-2255(Diesel Exhaust Emission Control Modeling) 135 149
- Frobert, Arnaud Creff, Yann Lepreux, Olivier Schmidt, Laurent Raux, Stephane “Generating thermal conditions to regenerate a DPF: impact of the reduction on the performances of diesel oxidation catalysts” Society of Automotive Engineers, [Special Publication] SP (2009), SP-2254(Diesel Exhaust Emission Control) 573 584
- Nagata, Makoto “Computer simulation of DOC + CSF systems for diesel exhaust emission control” Studies in Surface Science and Catalysis 2007 172
- Yoo, Jin Hwan “Regeneration method of diesel oxidation catalyst system for diesel automobile” Repub. Korea 7
- Williamson, W. B. Perry, J. Gandhi, H. S. Bomback, J. L. “Effects of oil phosphorus on deactivation of monolithic three-way catalysts” Applied Catalysis 1985 15 2 277 92
- Williamson, W. Burton Stepien, Henry K. Gandhi, Haren S. “Poisoning of platinum-rhodium automotive three-way catalysts: behavior of single-component catalysts and effects of sulfur and phosphorus” Environmental Science and Technology 1980 14 3 319 24
- Kroeger, V. Kanerva, T. Lassi, U. Rahkamaa-Tolonen, K. Vippola, M. Keiski, R. L. “Characterization of phosphorus poisoning on diesel exhaust gas catalyst components containing oxide and Pt” Topics in Catalysis 2007 45 1-4 153 157
- Kroeger, V. Kanerva, T. Lassi, U. Rahkamaa-Tolonen, K. Lepistoe, T. Keiski, R. L. “Phosphorus poisoning of ZSM-5 and Pt/ZSM-5 zeolite catalysts in diesel exhaust gas conditions” Topics in Catalysis 2007 42/43 433 436
- Kroeger, V. Hietikko, M. Angove, D. French, D. Lassi, U. Suopanki, A. Laitinen, R. Keiski, R. L. “Effect of phosphorus poisoning on catalytic activity of diesel exhaust gas catalyst components containing oxide and Pt” Topics in Catalysis 2007 42/43 409 413
- Kroeger, V. Lassi, U. Kynkaeaenniemi, K. Suopanki, A. Keiski, R. L. “Methodology development for laboratory-scale exhaust gas catalyst studies on phosphorus poisoning” Chemical Engineering Journal (Amsterdam, Netherlands) 2006 120 1-2 113 118
- Hihara, T. Tanaka, Y. Banno, Y. Nagata, M. “Effective Catalyst Layer Study by Computer Calculation,” SAE Technical Paper 2005-01-0957 2005
- Wakao N. Smith J.M. “Diffusion in catalyst pellets” Chemical Engineering Science 1962 17 825 834
- Jain, G. C. Sadana, D. K. Das, B. K. “Phosphorus diffusion in gallium arsenide” Solid-State Electronics 1976 19 8 731 6
- Kee, R.J. Grcar, J.F. Smooke, M.D. Miller, J.A. Sandia National Laboratories Report, SAND 85-8240 1985