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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
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Kinetic modelling of catalytic N2O removal
Mathias Nygård1,2, Johan Wärnå1, Vincenzo Russo3
1Åbo Akademi University, Henriksgatan 2, Åbo, 20500, Finland.
Scientific Reports
|December 29, 2025
Summary
Marine industry decarbonisation with ammonia fuel requires new emission aftertreatment. This study models catalytic removal of nitrous oxide (N2O), a potent greenhouse gas, from engine exhaust to mitigate environmental impact.
Area of Science:
- Marine Engineering
- Environmental Science
- Chemical Engineering
Background:
- Marine industry decarbonisation necessitates alternative fuels like ammonia.
- Ammonia combustion produces challenging emissions including NO, NO2, N2O, and unburned ammonia.
- Nitrous oxide (N2O) poses the most significant environmental risk among these emissions.
Purpose of the Study:
- To understand factors influencing N2O formation and removal in marine exhaust aftertreatment systems.
- To model the catalytic removal of N2O using a mechanistic surface reaction model.
- To validate the model against experimental data from catalyst screening.
Main Methods:
- Development of a mechanistic model based on surface reactions.
- Simulation of catalytic removal of N2O from exhaust gas.
- Validation of the model using experimental data from lab-scale reactors.
Main Results:
- The study provides insights into N2O dynamics within aftertreatment systems.
- A validated mechanistic model aids in understanding N2O catalytic removal.
- Catalyst screening data was used to confirm model accuracy.
Conclusions:
- Effective aftertreatment systems are crucial for ammonia-fueled marine engines.
- Mechanistic modeling is a valuable tool for optimizing N2O emission control.
- Further research can leverage this model for developing efficient SCR systems.
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