Oxidation catalyst systems

Johnson Matthey's Modulex™ and DualOx® catalytic converters for stationary engines - reliable engine exhaust emission control combined with silencing technology. 

Modulex and DualOx catalytic converters are designed to accommodate oxidation and three-way catalyst elements to reduce emissions and noise. This technology operates over a wide range of conditions including rich-burn, lean-burn and diesel engine applications, in market segments such as: 

  • Gas compression 

  • Gas transmission 

  • Power generation 

  • Irrigation and pumping 

  • Standby equipment.  

Our highly reliable HAPGuard Monitor helps engine operators comply with RICE NESHAP requirements. 

Catalytic converter Engine power Construction material
MODULEX C 50-500 HP Stainless steel
MODULEX B 250-2250 HP Carbon steel, stainless steel
DUALOX 2000 HP and larger Carbon steel, stainless steel

MODULEX and DUALOX catalytic converters and converter-silencers

• Designed to minimise leaks and bypass to maximise conversions

• Improved flow distribution for maximum catalyst utilisation

• Ease of access for catalyst installation, cleaning and replacement

• Robust design capable of using different fuels including natural gas, LPG, propane, diesel, biodiesel, dual fuel

• 4-cycle engines and 2-cycle engines

• Used with oxidation catalysts and three-way catalyst elements

• Available with integrated silencer

General enquiries

EU and Asia applications

North America applications

Explore more