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NOx Sorbate Catalyst System with Sulfur Catalyst Protection for the Aftertreatment of No. 2 Diesel Exhaust
Technical Paper
1999-01-3557
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A two-chamber catalyst system for the aftertreatment of No. 2 Diesel exhaust is demonstrated. NOx conversion efficiencies greater than 90% were obtained over a broad range of operating temperatures and NOx levels. The system incorporates a catalyst (SCONOx™) for the removal of CO, hydrocarbons, and NOx from the exhaust stream and a sulfur catalyst (SCOSOx™) for the protection of the NOx catalyst from sulfur poisoning. Both catalysts are of sorbate or “trap” type. No. 2 Diesel and hydrogen were used as reductants. Tests of the catalysts were performed with various loads, temperatures, and NOx levels. A light-duty diesel engine with no particulate control was used for the tests. All tests were conducted using No. 2 Diesel fuel. NOx conversion decay is compared with and without sulfur catalyst protection.
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Citation
Parks, J., Wagner, G., Epling, W., Sanders, M. et al., "NOx Sorbate Catalyst System with Sulfur Catalyst Protection for the Aftertreatment of No. 2 Diesel Exhaust," SAE Technical Paper 1999-01-3557, 1999, https://doi.org/10.4271/1999-01-3557.Also In
References
- Luders H. Stommel P. Geckler S. “Diesel Exhaust Aftertreatment - New Approaches to Ultra Low Emission Diesel Vehicles” SAE 1999-01-0108
- Engler B. H. Leyrer J. Lox E. S. Ostgathe K. Catalytic Reduction of NOx with Hydrocarbons Under Lean Diesel Exhaust Conditions” SAE 930735 1993
- Fritz N. Mathes W. Zuerbig J. Mueller R. “On-Road Demonstration of NOx Emission Control for Diesel Trucks with SINOx Urea SCR System” SAE 1999-01-0111
- Lutkemeyer G. Weinowski R. Lepperhoff G. Brogan M. S. Brisley R. J. Wilkins A. J. J. “Comparison of De-NOx and Adsorber Catalysts to Reduce NOx-Emissions of Lean Burn Gasoline Engines” SAE 962046 1996
- Dearth M. A. Hepburn J. S. Thanasiu E. McKenzie J. Horne G. S. “Sulfur Interaction with Lean NOx Traps: Laboratory and Engine Dynamometer Studies” SAE 982595 1998
- Parks J. E. II Wagner G. J. Epling W. S. Sanders M. W. Campbell L. E. “Near-Zero NOx Control for Diesel Aftertreatment” SAE 1999-01-2890