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Detailed surface reaction mechanism for Pt-catalyzed abatement of automotive exhaust gases

Paper ID Volume ID Publish Year Pages File Format Full-Text
47709 46481 2009 12 PDF Available
Title
Detailed surface reaction mechanism for Pt-catalyzed abatement of automotive exhaust gases
Abstract

A modeling and simulation study on Pt-catalyzed conversion of automotive exhaust gases is presented. The model is based on a newly developed surface reaction mechanism consisting of 73 elementary-step like reactions among 22 surface and 11 gas-phase species. Reactions for the conversion of the major pollutants CO, CH4CH4, C3H6C3H6, and NOxNOx are included. The mechanism is implemented in a two-dimensional flow field description of a single channel of the catalytic monolith. The model is evaluated by comparison with data derived from isothermal laboratory experiments in a flat bed reactor with platinum-coated monoliths using synthetic lean/rich cycling exhaust gas mixtures. The influence of CO and C3H6C3H6 at lean and H2H2 at rich conditions on NO conversion is investigated, both at steady-state conditions. Furthermore, the model is also applied for the simulation of emissions of hydrocarbons, CO, and NO from a gasoline engine (stoichiometric exhaust gas) in a dynamic engine test bench.

Keywords
Modeling; Platinum; Catalysis; Reaction mechanism; Automotive pollutants; Nitrogen oxides; DETCHEM
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Detailed surface reaction mechanism for Pt-catalyzed abatement of automotive exhaust gases
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 91, Issues 1–2, 7 September 2009, Pages 47–58
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us