NOx Sorbate Catalyst System with Sulfur Catalyst Protection for the Aftertreatment of No. 2 Diesel Exhaust 1999-01-3557
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.
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. Download Citation
J. E. Parks, G. J. Wagner, W. E. Epling, M. W. Sanders, L. E. Campbell
Goal Line Environmental Technologies LLC
International Fuels & Lubricants Meeting & Exposition
Diesel Nitrogen Oxide Emissions, Landmark Research 1995-2001-PT-89, Gasoline Direct Injection and Diesel Aftertreatment-SP-1476, SAE 1999 Transactions - Journal of Fuels and Lubricants-V108-4