Abstract
The nonthermal plasma generated in a shielded sliding discharge reactor was used to reform diesel for the hydrocarbon-selective catalytic reduction (HC-SCR) of NOx on Ag/Al2O3 catalysts. Compared with raw diesel, the reformed diesel enhanced the NOx reduction efficiency, mitigated hydrocarbon poisoning of the catalyst and reduced the fuel penalty for the HC-SCR reaction. The NOx conversion values obtained with a commercial Ag/Al2O3 catalyst exceeded that of a 2.0 wt% Ag/Al2O3 catalyst prepared by wet impregnation. A significant amount of NH3 was produced as a by-product during the HC-SCR reaction, which suggests that further NOx conversion enhancement can be achieved by placing a second NH3-SCR catalyst in series with the Ag/Al2O3 catalyst.
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Acknowledgments
This work was supported by General Electric; the Commonwealth Research Commercialization Fund (Grant No. MF13-019) from Virginia’s Center for Innovative Technology; the Frank Reidy Fellowship in Environmental Plasma Research and other internal funds from the Frank Reidy Research Center for Bioelectrics.
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Bao, X., Malik, M.A., Norton, D.G. et al. Shielded Sliding Discharge-Assisted Hydrocarbon Selective Catalytic Reduction of NOx over Ag/Al2O3 Catalysts Using Diesel as a Reductant. Plasma Chem Plasma Process 34, 825–836 (2014). https://doi.org/10.1007/s11090-014-9551-3
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DOI: https://doi.org/10.1007/s11090-014-9551-3