Performance materials for 3-way gasoline catalysis

This global approach already complies with the 2005 emissions limits.

A car’s exhaust passes through a honeycomb monolith (metallic or more commonly ceramic), whose interior surface is coated with the catalyst-inducing formulation which contains three key substances :
- precious metals such as : platinum, palladium, rhodium
- aluminum
- a rare earth-based material which enhances catalytic activity such as Rhodia’s ACTALYS

This global approach already complies with 2005 emissions limits.