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This work deals with the effect of Mn or Fe addition on the NOx storage–reduction properties of a Pt/Ba/Al2O3 model catalyst. NOx storage capacity, SO2 poisoning and regeneration and NOx removal efficiency under rich/lean cycling conditions are studied. Fe addition to Pt/Ba/Al2O3 leads only to a small increase of NOx storage capacity, and more interestingly, to a better sulfur removal due...
NOx storage capacity, sulphur resistance and regeneration of 1wt%Pt/Ce0.7Zr0.3O2 (Pt/CeZr) and 1wt%Pt/10wt%BaO/Ce0.7Zr0.3O2 (Pt/Ba/CeZr) catalysts were studied and compared to a 1wt%Pt/10wt%BaO/Al2O3 (Pt/Ba/Al) model catalyst submitted to the same treatments. Pt/Ba/CeZr presents the best NOx storage capacity at 400 °C in accordance with basicity measurements by CO2 TPD and Pt/CeZr shows the better...
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