CATL 22 |
| Uwe Riedel and Igor Orlandini. Reactive Flows Group, I W R, University of Heidelberg, Im Neuenheimer Feld 368, 69120 Heidelberg, Germany |
| Dielectric barrier discharges are being used for plasma remediation of NOx from the exhaust of internal combustion engines. It was found that unburned hydrocarbons present in exhausts play a significant role in altering NO remediation-pathways. For a better understanding and optimization of possible applications of this technique it is necessary to develop models for the underlying physical and chemical processes which are responsible for the removal of pollutants. A volume-averaged model is presented, that can describe the oxidation of hydrocarbons and conversion of NO by a multi-pulse treatment of the exhaust gases at low temperatures and at atmospheric pressure in dielectric barrier discharges. A detailed reaction mechanism is used and reaction flow analysis and sensitivity analysis is performed to identify specific reaction paths and rate limiting reactions for typical operating conditions. A comparison of the oxidation of propene compared to propane, the analogous alkane, is presented. The results of our numerical simulation show good agreement with experimental results published in the literature. |
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Plasma Technology and Catalysis
8:00 AM-12:00 PM, Tuesday, March 25, 2003 Convention Center -- Room 342, Oral
Catalysis & Surface Science Secretariat |