Plasma/Catalyst System for Reduction of NOx in Diesel Engine Exhaust 2000-01-2897
NOx reduction by a plasma/catalyst system was tested with modeled gas and real exhaust gas. Ag/Al2O3 was used as the catalyst. The oxidation of NO to NO2 by the plasma was increased as HC concentration and input energy density increase. The presence of H2O in the reactant gas led to the production of acid by plasma. The catalytic activity for NOx reduction was enhanced by the assistance of plasma especially in the lower temperature region. This activity was a little suppressed in the presence of H2O, but the acid was not detected in the effluent gas treated by the plasma/catalyst system. The NOx conversion to N2 was evaluated by a gas chromatography in the model gas with helium as the balance gas. The result in helium balance gas showed the selectivity to N2 depended on the catalyst temperature and was also enhanced by the assistance of plasma. The 50% of NOx removal from the diesel exhaust gas was achieved by the plasma /catalyst system.
Citation: Chun, B., Lee, H., Nam, C., Chun, K. et al., "Plasma/Catalyst System for Reduction of NOx in Diesel Engine Exhaust," SAE Technical Paper 2000-01-2897, 2000, https://doi.org/10.4271/2000-01-2897. Download Citation
Author(s):
Bae-Hyeock Chun, Hyeong-Sang Lee, Chang-Soo Nam, Kwang Min Chun, Jae Hong Ryu, Kwan-Young Lee
Affiliated:
Blue Planet Ltd., Yonsei Univ, Korea Univ
Pages: 7
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Non-Thermal Plasma-SP-1566, Diesel Nitrogen Oxide Emissions, Landmark Research 1995-2001-PT-89, SAE 2000 Transactions Journal of Fuels and Lubricants-V109-4
Related Topics:
Diesel exhaust emissions
Nitrogen oxides
Catalysts
Gases
Corrosion
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