Three-Way Conversion (TWC) Catalyst

The modern, Three-Way Conversion (TWC) catalyst today is capable of destroying more than 90% of hydrocarbons (HC), carbon monoxide (CO) and oxides of nitrogen (NOx) produced by gasoline engines.

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The modern, Three-Way Conversion (TWC) catalyst today is capable of destroying more than 90% of hydrocarbons (HC), carbon monoxide (CO) and oxides of nitrogen (NOx) produced by gasoline engines. 

We were awarded the National Medal of Technology and the United Nations Award of the Decade, for the development of the first three-way automotive emissions control catalyst. 

Arguably the most important pollution abatement device ever invented, the catalytic converter has been constantly improved and represents the key component of the catalytic emissions control system in every car around the world. Key features of the technology we offers are :

  • Optimal use of precious metals

  • Lower cost and higher effectiveness

  • Higher conversions of CO, HC and NOx over a wide range of conditions

BASF's TWC catalysts:

  • Have a lower light-off temperature
  • Offer high temperature stability enabling the catalyst to be moved closer to the manifold
  • Have a stable oxygen storage function to help original equipment manufacturers (OEMs) meet On-Board Diagnostics (OBD) requirements
  • Minimize hydrogen sulfide (H2S) emissions

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