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Excellent Performance of One-Pot Synthesized Cu-SSZ-13 Catalyst for the Selective Catalytic Reduction of NOx with NH3

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journal contribution
posted on 07.01.2014, 00:00 by Lijuan Xie, Fudong Liu, Limin Ren, Xiaoyan Shi, Feng-Shou Xiao, Hong He
Cu-SSZ-13 samples prepared by a novel one-pot synthesis method achieved excellent NH3–SCR performance and high N2 selectivity from 150 to 550 °C after ion exchange treatments. The selected Cu3.8-SSZ-13 catalyst was highly resistant to large space velocity (800 000 h–1) and also maintained high NOx conversion in the presence of CO2, H2O, and C3H6 in the simulated diesel exhaust. Isolated Cu2+ ions located in three different sites were responsible for its excellent NH3–SCR activity. Primary results suggest that the one-pot synthesized Cu-SSZ-13 catalyst is a promising candidate as an NH3–SCR catalyst for the NOx abatement from diesel vehicles.