Technologies
 
2-way (oxidation) Catalysts
3-way (NSCR) Catalysts
Selective Catalytic Reduction
NOx Adsorber Catalysts
Diesel Particulate Filters
4-way Diesel Systems

Technologies

Catalyst technology from Johnson Matthey has, over the last 30 years, contributed to an amazing reduction in the emissions from passenger cars (see chart). For the last 10 years, JM’s CRT® system has been used to remove the particulate matter from the exhaust of city buses, further improving the quality of urban air and improving the environment for city dwellers. Catalysts are used to clean gas streams from many industrial processes. Now, catalytic exhaust aftertreatment is being used on heavy duty diesel vehicles and on engines, large and small, in non-road applications.

Johnson Matthey offers catalyst technologies to control the full range of regulated emissions from vehicles, engines and stationary sources:

Technology
Gasoline (petrol) /
gas engines
Diesel / lean burn
gasoline engines
Chemical and industrial
processes
2-way (oxidation) catalysts
CO, HC
CO, HC, PM
CO, HC, VOC
3-way (NSCR) catalysts
CO, HC, NOx
 
CO, HC, NOx
Selective catalytic reduction (SCR)
 
NOx
NOx
NOx adsorber catalysts
 
NOx
 
Diesel particulate filters
 
CO, HC, PM (diesel)
 
4-way (combined) diesel systems
 
CO, HC, PM, NOx