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Sulfur Traps for NOx Adsorbers: Materials Development and Maintenance Strategies for Their Application
Technical Paper
2000-01-1205
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
Although improvements in NOx adsorber formulations are increasing the sulfur resistance of these materials, and legislation continues to further restrict sulfur levels in fuels, sulfur poisoning remains as one of the key issues associated with successful commercialization of NOx adsorber technology throughout the world. Because of the stability of the sulfate poisons, high temperatures which stress the thermal stability of some of the most efficient NOx adsorbents are required for desulfation. Additionally, the rich condition which favors sulfur release simultaneously increases the H2S content of the emission.
Sulfur traps offer the potential for reducing the formation of poisoning sulfates on downstream NOx adsorbents. Results characterizing the sulfur scavenging efficiency of these materials, as well as the conditions required for their regeneration will be presented. Strategies for their successful application on motor vehicles will be discussed.
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Authors
Citation
Bailey, O., Dou, D., and Molinier, M., "Sulfur Traps for NOx Adsorbers: Materials Development and Maintenance Strategies for Their Application," SAE Technical Paper 2000-01-1205, 2000, https://doi.org/10.4271/2000-01-1205.Also In
Exhaust Aftertreatment Modeling and Gasoline Direct Injection Aftertreatment
Number: SP-1533; Published: 2000-03-06
Number: SP-1533; Published: 2000-03-06
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