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A New Transient NOx Direct Catalytic Decomposition on a Rh-based Catalyst
Technical Paper
2003-01-3243
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
It has been found that over Rh/a specified support NOx is eliminated using rich/lean excursions in a different reaction mechanism from a Lean NOx Trap system, where NO is decomposed into nitrogen and oxygen. The contribution of the transient NOx direct decomposition to NOx elimination depends on both reaction conditions and supports. 0.1-0.5wt%Rh and 0.5wt%Pd/a specified support: X can mainly catalyze the transient NO decomposition. On the other hand, on another Rh-based catalyst NO reduction proceeds mainly in the Lean NOx trap system.
As expected from the NO elimination mechanism, the newly developed catalyst has shown a high tolerance against SOx.
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Authors
- Tadao Nakatsuji - VTT (Technical Research Centre of Finland)
- Juhana Ruotoistenmäki - VTT (Technical Research Centre of Finland)
- Manabu Matsubara - VTT (Technical Research Centre of Finland)
- Taiji Uekusa - Isuzu Advanced Engineering Center, Ltd.
- Yousuke Tanaka - Isuzu Advanced Engineering Center, Ltd.
Citation
Nakatsuji, T., Ruotoistenmäki, J., Matsubara, M., Uekusa, T. et al., "A New Transient NOx Direct Catalytic Decomposition on a Rh-based Catalyst," SAE Technical Paper 2003-01-3243, 2003, https://doi.org/10.4271/2003-01-3243.Also In
Emissions: Advanced Catalyst and Substrates, Measurement and Testing, Diesel Gaseous Emissions
Number: SP-1801; Published: 2003-10-31
Number: SP-1801; Published: 2003-10-31
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