The Role of Support Acidity in the Selective Catalytic Reduction of NO by C3H6 Under Lean-Burn Conditions |
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| Authors: | Giroir-Fendler Anne Denton Patricia Boreave Antoinette Praliaud Hélène Primet Michel |
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| Affiliation: | (1) Laboratoire d' Application de la Chimie à 1'Environnement (LACE), UMR 5634 (CNRS-UCB Lyon 1), 43, boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France |
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| Abstract: | Mechanical mixtures consisting of a catalyst (Pt/SiO2 or Pt/SiO2–Al2O3) and supports of varying acidity (hydrotalcite, SiO2, SiO2–Al2O3, and ZSM-5 zeolite) were tested for the selective reduction of NO by C3H6. A certain degree of support acidity appears to favour N2 selectivity, but if there are too many acid sites, carbon deposition becomes extensive and leads to catalyst deactivation. |
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| Keywords: | DeNOx selective nitric oxide reduction SCR NO Pt supported catalysts NH3-TPD acidity |
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