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Sulfur Control for NOx Sorbate Catalysts: Sulfur Sorbate Catalysts and Desulfation
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 07, 2001 by SAE International in United States
Annotation ability available
NOx sorbate, or “trap”, catalysts have achieved >90% reduction of NOx from lean exhaust streams over a broad range of temperatures. Since diesel can be used as the reductant for NOx sorbate catalysts, the sorbate catalyst technology offers great potential for NOx control in a broad range of mobile diesel applications. Traditionally, the longevity of NOx sorbate catalysts in diesel exhaust applications has been limited by sulfur masking of NOx sorption sites. Two methods to control sulfur compounds and their associated effects will be presented here. Upstream sulfur sorbate, or “trap”, catalysts are used to control the rate of sulfur masking by diverting sulfur away from the NOx sorbate catalyst. Desulfation of NOx sorbate catalysts can lead to the removal of sulfur compounds from the catalyst and reactivation of NOx sorption sites. Data demonstrating sulfur control with both of these methods will be presented here. The effect of temperature on sulfur control and thereby NOx sorbate catalyst longevity will be discussed.
- Jim Parks - Goal Line Environmental Technologies LLC
- Aaron Watson - Goal Line Environmental Technologies LLC
- Greg Campbell - Goal Line Environmental Technologies LLC
- Greg Wagner - Goal Line Environmental Technologies LLC
- Mike Cunningham - Cummins Engine Company
- Neal Currier - Cummins Engine Company
- Tom Gallant - Cummins Engine Company
- George Muntean - Cummins Engine Company
CitationParks, J., Watson, A., Campbell, G., Wagner, G. et al., "Sulfur Control for NOx Sorbate Catalysts: Sulfur Sorbate Catalysts and Desulfation," SAE Technical Paper 2001-01-2001, 2001, https://doi.org/10.4271/2001-01-2001.
- Kramer M., Abthoff J., Duvinage F., Ruzicka N., Krutzsch B. and Liebscher T., “Possible Exhaust Gas Aftertreatment Concepts for Passenger Car Diesel Engines with Sulphur-free Fuel”, SAE 1999-01-1328.
- Marshall R. A., Gregory D., Eves B., Pierce G., Taylor T., Cornish S., Dearth M., and Hepburn J., “Optimising the Aftertreatment Configuration for NOx Regeneration on a Lean-NOx Trap”, SAE 1999-01-3499.
- Parks J. E. II, Wagner G. J., Epling W. S., Sanders M. W., and Campbell L. E., “NOx Sorbate Catalyst System with Sulfur Catalyst Protection for the Aftertreatment of No. 2 Diesel Exhaust”, SAE 1999-01-3557.
- Dearth M. A., Hepburn J. S., Thanasiu E., McKenzie J., and Horne G. S., “Sulfur Interaction with Lean NOx Traps: Laboratory and Engine Dynamometer Studies”, SAE 982595 (1998).
- Asanuma Takamitsu, Takeshima Shinichi, Yamashita Tetsuya, Tanaka Toshiaki, Murai Toshimi and Iguchi Satoshi, “Influence of Sulfur Concentration in Gasoline on NOx Storage - Reduction Catalyst”, SAE 1999-01-3501.
- Erkfeldt Sara, Larsson Mikael, Hedblom Hakan, and Skoglundh Magnus, “Sulphur Poisoning and Regeneration of NOx Trap Catalyst for Direct Injected Gasoline Engines”, SAE 1999-01-3504.
- Hodjati Sh., Semelle F., Moral N., Bert C. and Rigaud M., “Impact of Sulphur on the NOx Trap Catalyst Activity - Poisoning and Regeneration Behaviour”, SAE 2000-01-1874.
- Parks J. E. II, Watson J. A., Campbell G. L., Wagner G. J., and Campbell L. E., “Sulfur Sorbate Catalysts for Diesel Aftertreatment: Temperature Effects on the Release of Sulfur”, SAE 2000-01-1932.
- Bailey Owen, Dou Danan, and Molinier Michel, “Sulfur Traps for NOx Adsorbers: Materials Development and Maintenance Strategies for Their Application”, SAE 2000-01-1205.
- Parks J. E. II, Watson J. A., Epling W. S., Wagner G. J., Sanders M. W., and Campbell L. E., “Sulfur-Resistant NOx Sorbate Catalyst for Increasing Longevity in Diesel Exhaust”, SAE 2000-10-1012.