Characterisation and Modelling of the Reactions in a Three-Way PdRh Catalyst in the Exhaust Gas from an Ethanol-Fuelled Spark-Ignition Engine

Claire McAtee, Geoffrey McCullough, David Sellick, Alexandre Goguet

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This work investigated and modelled the performance and characteristics of automotive catalytic converter formulations when subjected to a synthetic exhaust gas mixture representative of that emitted by an ethanol-fuelled spark-ignition engine. A synthetic gas reactor and exhaust gas emissions analysers were used to assess the catalytic activity, the products distribution and chemical mechanisms exhibited by a commercial catalytic converter formulation when exposed to ethanol containing gas mixtures. A commercially available after-treatment modelling platform named Axisuite was used to simulate the catalyst performance. This software was used to assign the pre-exponential frequency factor and activation energy variables within the rate equations. A set of global kinetic coefficients for the relevant reactions was established and is reported.
Original languageEnglish
Number of pages13
JournalProceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
Early online date01 Jan 2019
Publication statusEarly online date - 01 Jan 2019



  • SI engines exhaust emission control
  • Ethanol
  • Reaction kinetics
  • Catalyst modelling
  • Acetaldehyde emissions

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