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Microkinetic Modeling of the Effects of Oxygen on the Catalytic Reduction of NO on Pt and Rh in Automotive Aftertreatment
Vishnu S. Prasad,
Published in American Chemical Society
2016
Volume: 55
   
Issue: 35
Pages: 9362 - 9371
Abstract
Nitric oxides and unburned hydrocarbons from automotive engines are major atmospheric pollutants. A strategy based on the simultaneous reduction of NO and oxidation of hydrocarbon can be very effective in aftertreatment. In this study, the various regimes of operation of this selective catalytic reduction process using propene as a representative hydrocarbon, with and without the presence of oxygen, are delineated. Detailed kinetic modeling using quantitative microkinetics for Pt and Rh catalysts is performed. Interesting catalytic features including coking and oxygen poisoning are clearly identified. An optimal operating regime in which the complete conversion of NO and C3H6 occurs in the presence of small amounts of oxygen is highlighted. © 2016 American Chemical Society.
About the journal
JournalData powered by TypesetIndustrial and Engineering Chemistry Research
PublisherData powered by TypesetAmerican Chemical Society
ISSN08885885
Open AccessNo
Concepts (15)
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    Hydrocarbons
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    Nitric oxide
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    Oxygen
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    Platinum
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    Reduction
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    Rhodium
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    Atmospheric pollutants
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    Automotive engine
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    CATALYTIC REDUCTION
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    Detailed kinetic modeling
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    Microkinetic modeling
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    Operating regimes
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    Simultaneous reduction
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    UNBURNED HYDROCARBONS
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    Selective catalytic reduction