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Sulfur Control for NOx Sorbate Catalysts: Sulfur Sorbate Catalysts and Desulfation
Technical Paper
2001-01-2001
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
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.
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Authors
- 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
Citation
Parks, 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.Also In
References
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