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Numerical Study of Catalytic Reaction Mechanisms of Urea SCR
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Urea-SCR(selective catalytic reduction) system is widely used as a technology of NOx(Nitrogen Oxides) reduction from diesel engine exhaust gases. Emission regulations have becoming stricter all over the world, and high NOx reduction performance is necessary to meet the emission regulations. To get higher NOx reduction performance of the Urea-SCR system, it is important to understand detailed chemical reaction mechanisms of Urea-SCR catalysts.
In this study, we focused on elucidation of the reaction mechanism of the Urea-SCR catalyst by numerical simulation approach. The chemical reaction models with detail chemical reactions were built for both Fe-catalyst and Cu-catalyst. Both of the catalytic reaction models can predict difference of the catalytic reaction performance between the Fe-catalyst and the Cu-catalyst. In addition, rate-determining reaction step of the Cu-catalyst was successfully identified by the numerical simulation results.
|Technical Paper||Urea Quality Sensor Integration in Urea Supply Line / Urea Tank|
|Technical Paper||The State of the Art in Selective Catalytic Reduction Control|
|Journal Article||Analytical Investigation of Urea Deposits in SCR System|
CitationUchiumi, N., Hirabayashi, H., Sato, S., and Yamauchi, T., "Numerical Study of Catalytic Reaction Mechanisms of Urea SCR," SAE Technical Paper 2017-01-0973, 2017, https://doi.org/10.4271/2017-01-0973.
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