Development of a Global Kinetic Model for a Commercial Lean NOx Trap Automotive Catalyst Based on Laboratory Measurements
| Autor: | Richard Blint, Stuart Daw, Syed Wahiduzzaman, Josh A. Pihl, Mahsa Rafigh, Ryan Dudgeon |
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| Rok vydání: | 2016 |
| Předmět: |
Waste management
010405 organic chemistry Oxygen storage Chemistry Health Toxicology and Mutagenesis Nuclear engineering Flow (psychology) Management Monitoring Policy and Law Oak Ridge National Laboratory Trap (plumbing) 010402 general chemistry 01 natural sciences Pollution Water-gas shift reaction 0104 chemical sciences Catalysis Steam reforming Automotive Engineering NOx |
| Zdroj: | Emission Control Science and Technology. 3:73-92 |
| ISSN: | 2199-3637 2199-3629 |
| DOI: | 10.1007/s40825-016-0049-8 |
| Popis: | We summarize a global kinetic model for a commercial automotive Lean NOx Trap (LNT) catalyst derived from laboratory flow reactor measurements at Oak Ridge National Laboratory (ORNL). The experimental measurements were made according to a modified version of a publicly shared protocol developed for characterizing the dynamic responses of LNT catalysts over a temperature range of 150–550 °C under lean-rich cycling with CO, H2, and C3H6 as the reductants. The resulting model includes three NOx storage sites. The present model also includes reactions for oxygen storage, water gas shift, steam reforming, NOx reduction, and N2O and NH3 generation. When implemented in 1D integral reactor simulations of long-period cycling, the model was found to accurately predict the observed outlet concentrations of CO, H2, C3H6, NO, NO2, NH3, and N2O. |
| Databáze: | OpenAIRE |
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