A Low Temperature Pathway Operating the Reduction of Stored Nitrates in Pt-Ba/Al2O3 Lean NOx Trap Systems

2006-01-1368

04/03/2006

Event
SAE 2006 World Congress & Exhibition
Authors Abstract
Content
In this paper the low temperature reduction process of nitrates stored at high temperatures over model Pt-Ba/Al2O3 LNT catalysts using both H2 and C3H6 is analyzed. The results indicate that over the Pt-Ba/Al2O3 catalyst the reduction of stored NOx with both H2 and C3H6 occurs at temperature below those corresponding to their thermal stability. Accordingly, the reduction process occurs through a Pt-catalyzed surface reaction, which does not involve, as a preliminary step, the thermal decomposition of the adsorbed NOx species. The occurrence of such a pathway also requires the co-presence of the storage element and of the noble metal on the same support.
Meta TagsDetails
DOI
https://doi.org/10.4271/2006-01-1368
Pages
12
Citation
Nova, I., Castoldi, L., Lietti, L., Tronconi, E. et al., "A Low Temperature Pathway Operating the Reduction of Stored Nitrates in Pt-Ba/Al2O3 Lean NOx Trap Systems," SAE Technical Paper 2006-01-1368, 2006, https://doi.org/10.4271/2006-01-1368.
Additional Details
Publisher
Published
Apr 3, 2006
Product Code
2006-01-1368
Content Type
Technical Paper
Language
English