Influence of Water Content on NOx Conversion in the SCR Catalyst for Hydrogen Engines
Conference poster, 2026
Hydrogen Internal Combustion Engine (H2 ICE) powered vehicles can reduce carbon emissions by >95% compared to diesel vehicles. However, H2
ICE exhaust gas contains nitrogen oxides (NOx). An ammonia (NH3) Selective Catalytic Reduction (SCR) effectively converts NOx into harmless nitrogen. H2ICE’s exhaust gas contains higher water content (xH2O), affecting SCR performance in NOx conversion (deNOx). Hence, this study aims to determine how the water concentration (xH2O) in the exhaust affects deNOx independently of gas space velocity, NOx, and SCR temperature.
ICE exhaust gas contains nitrogen oxides (NOx). An ammonia (NH3) Selective Catalytic Reduction (SCR) effectively converts NOx into harmless nitrogen. H2ICE’s exhaust gas contains higher water content (xH2O), affecting SCR performance in NOx conversion (deNOx). Hence, this study aims to determine how the water concentration (xH2O) in the exhaust affects deNOx independently of gas space velocity, NOx, and SCR temperature.
Water
Emissions control
Catalyst
Hydrogen engines
Author
Krishnamoorthi Muniappan
Chalmers, Mechanics and Maritime Sciences (M2), Transport, Energy and Environment
Jonas Sjöblom
Energy Conversion and Propulsion Systems
Lennart Andersson
Volvo Group
Jonas Edvardsson
Johnson Matthey AB
21st Nordic Symposium on Catalysis
Gothenburg, Sweden,
Gothenburg, Sweden,
Hydrogen Engine Emissions Reduction (HEER)
Swedish Energy Agency (Dnr2020-016027,Pnr51458-1), 2020-12-03 -- 2024-12-31.
Driving Forces
Sustainable development
Areas of Advance
Transport
Subject Categories (SSIF 2025)
Other Mechanical Engineering
Energy Engineering