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Influence of Hydrocarbons on the Selective Catalytic Reduction of NOx over Ag/Al2O3 - Laboratory and Engine Tests
Technical Paper
2000-01-2813
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Selective catalytic reduction (SCR) of NOx has been tested using different hydrocarbons as reducing agents over an Ag/Al2O3 catalyst, both in laboratory reactors and a diesel engine test bench. The hydrocarbons tested were octane, iso-octane, octanol, octanal, octanoic acid, 1-octene, a mixture of propane-propene, dodecane, a mixture of dodecanal-dodecane and a low sulphur diesel fuel. For the C8-hydrocarbons the maximum conversions, about 80 %, occurred at a much lower temperature (down to 350 °C) and over a wider temperature range compared to the propane-propene mixture (maximum conversion at 525 °C). Also dodecane and diesel fuel gave more than 70 % conversion between 300 °C and 500 °C. In the diesel test bench a continuous NOx conversion up to 50 % was measured with a fuel penalty of 0.3-4.0 %.
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Eränen, K., Lindfors, L., Niemi, A., Elfving, P. et al., "Influence of Hydrocarbons on the Selective Catalytic Reduction of NOx over Ag/Al2O3 - Laboratory and Engine Tests," SAE Technical Paper 2000-01-2813, 2000, https://doi.org/10.4271/2000-01-2813.Also In
References
- Fritz A. Pitchon V. Applied Catalysis B: Environmental 13 1997 1 25 The current state of research on automotive lean NO x catalysis
- Shimizu K. Satsuma A. Hattori T. Applied Catalysis B: Environmental 25 2000 339-247 Catalytic performance of Ag-Al 2 O 3 catalyst for the selective catalytic reduction of NO by higher hydrocarbons