Experiments and modeling to evaluate global reaction kinetics of three-way catalyst light off for net-zero carbon fuels and selected fuel blends

Internal combustion engine exhaust composition can have a significant impact on the light-off characteristics of CO, NO, and organics in the three-way-catalyst during cold-start. The U.S. Department of Energy’s Co-Optimization of Fuels and Engines initiative was aimed at developing new high-performa...

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Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2022-12, Vol.324 (1)
Main Authors: Ladshaw, Austin P., Majumdar, Sreshtha Sinha, Pihl, Josh A.
Format: Article
Language:English
Subjects:
biofuel
blends
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
net-zero carbon fuel
stoichiometric light off
three-way catalyst
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Summary:Internal combustion engine exhaust composition can have a significant impact on the light-off characteristics of CO, NO, and organics in the three-way-catalyst during cold-start. The U.S. Department of Energy’s Co-Optimization of Fuels and Engines initiative was aimed at developing new high-performance fuels, which raises the question of how current three-way-catalysts will perform if the exhaust composition is significantly changed. This work is aimed at quantifying the performance of the catalyst under a variety of different fuel components and mixtures. To this end, a reduced-order model is developed wherein the set of organics examined are placed into molecular groups based on their reactivities and to model each organic within that group with a common kinetic expression. In conclusion, this strategy allows for a first approximation to the light-off characteristics of all organics that fall within that group and to make predictions for fuel blends.
ISSN:0926-3373
1873-3883