Promoting Effect of Triglyme on Lean NOx Reduction Over Ag/Al2O3
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The highly oxygenated hydrocarbon triethylene glycol dimethyl ether or triglyme (CH3O–(C2H4O–)3CH3) was found to efficiently reduce NOx under lean conditions over Ag/Al2O3, but gave a low NOx conversion over Cu-ZSM-5. Furthermore, triglyme showed an extraordinary promoting effect when added together with propene as reducing agent for NOx over Ag/Al2O3 at low temperature. This is most likely due to that triglyme promotes the activation of propene.
KeywordsHydrocarbon-SCR NOx Reduction Alumina Triglyme Ether Propene Ag/Al2O3 Cu-ZSM-5
This work was supported by the Swedish Research Council, Swedish Energy Agency, and the Competence Centre for Catalysis hosted by Chalmers University of Technology and financially supported by the Swedish Energy Agency and the member companies: AB Volvo, Volvo Car Corporation, Scania CV AB, Saab Automobile Powertrain AB, Haldor Topsøe A/S, and the Swedish Space Corporation.
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