Johnson Matthey Emission Control Technologies

Johnson Matthey Emission Control Technologies

We are a leading supplier of emissions control products providing a variety of options for on-road and non-road applications. We have over 40 years’ experience of supplying catalytic systems and have supplied 1 in 3 of all autocatalysts ever made. Johnson Matthey develops and manufactures autocatalysts and emission control systems to control gaseous emissions from engines in many on-road and non-road vehicles and other applications including industrial processes. We have a significant global presence in over 30 countries.

Company details

Orchard Road , Royston , Hertfordsh SG8 5HE United Kingdom
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Business Type:
Industry Type:
Air Pollution Treatment
Market Focus:
Globally (various continents)
Over 1000

This company also provides solutions for other industrial applications.
Please, visit the following links for more info:


Johnson Matthey’s manufacturing sites (see below) around the world are dedicated to producing world-leading products for controlling emissions from mobile and stationary sources.

Our state-of-the-art manufacturing process, Precision Coating, applies measured doses of platinum group metals to the tightest tolerances achieved in the industry.

Combined with our advanced catalyst formulations, Precision Coating enables us to provide zoned catalysts, with two or more formulations applied to the same substrate. These products can achieve desired emissions reductions by targeting the most appropriate precious metal to its optimum position on the catalyst. This offers the opportunity to reduce total precious metal usage, as well as permitting greater flexibility in system design.


Johnson Matthey’s Technology Centres (see below) around the world are dedicated to creating world-leading products for controlling emissions from mobile and stationary sources.

State-of-the-art equipment and analysis, along with unparalleled expertise in catalysis, is used within customer collaborations, generic catalyst development and contract testing operations.

Johnson Matthey is known as a pioneer in the field of emissions control, having made the world’s first autocatalysts in its Royston facility, and invented the innovative CRT® diesel particulate filter technology.

Our innovation has been recognised in the awards we have received over the years:

  • 1976 - Queen’s Award for Technology (3-way autocatalyst)
  • 1980 - Royal Academy of Engineering, MacRobert Award (3-way catalyst)
  • 1995 - Queen’s Award for Export, Environment (autocatalyst)
  • 2000 - Royal Academy of Engineering, MacRobert Award (CRT® technology)
  • 2009 - Queen's Award for Enterprise: International Trade and Innovation

Johnson Matthey’s research and development activities are focused on improved catalyst performance, along with reductions in platinum group metal content of our products.

Our technology enables cost-effective compliance with regulations.


Our emissions control products help contribute to sustainable development by improving air quality around the world.

Our own environmental policies and procedures are designed to meet or exceed relevant environmental legislation wherever our sites are located. We seek to minimise waste and reduce emissions from our own operations by efficient use of resources and using best available techniques.

It is our policy objective to have all production sites certified to ISO 14000 or 14001.


Recovering your Precious Metal Values

In order to make Precious Metal Catalysts viable, it is important that the PGM (platinum group metal) content is recovered and re-used, not only for their financial cost but for the sake of the environment.

With over 100 years of experience, Johnson Matthey is the largest global full-service refiner of PGMs in the world, representing the world's most comprehensive and advanced sampling and refining facilities available.

The advanced technology employed by Johnson Matthey maximises precious metal recovery and ensures compliance with the most stringent environmental legislation. Johnson Matthey is ISO and NMAS accredited and is proud of the honest approach adopted in all aspects of every refining transaction.

No other company in the world has been as deeply involved in the evolution of innovative precious metal recovery processes. Our investments in upgrading our facilities and creating new technologies are testament to our commitment.