Sulfur tolerance of selective partial oxidation of NO to NO2 in a plasma
Several catalytic aftertreatment technologies rely on the conversion of NO to NO2 to achieve efficient reduction of NOx and particulates in diesel exhaust. These technologies include the use of selective catalytic reduction of NOx with hydrocarbons, NOx adsorption, and continuously regenerated particulate trapping. These technologies require low sulfur fuel because the catalyst component that is active in converting NO to NO2 is also active in converting SO2 to SO3 . The SO3 leads t o increase in particulates and/or poison active sites on the catalyst. A non-thermal plasma can be used for the selective partial oxidation of NO to NO2 in the gas-phase under diesel engine exhaust conditions. This paper discusses how a non-thermal plasma can efficiently oxidize NO to NO2 without oxidizing SO2 to SO3 .
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 14417
- Report Number(s):
- UCRL-JC-135481; KC0302010; KC0302010; TRN: US0111035
- Resource Relation:
- Journal Volume: 1; Conference: 1999 Society of Automotive Engineers International Fall Fuels and Lubes Meeting and Expo., Toronto, Ontario (CA), 10/25/1999--10/28/1999; Other Information: PBD: 24 Aug 1999
- Country of Publication:
- United States
- Language:
- English
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