Umicore Ag & Co Kg

Roger Staab

Thomas Kreuzer

Egbert Lox

Marcus Pfeifer

Frank-Walter Schuetze

Jürgen Gieshoff

Markus Koegel

Yvonne Demel

Lutz Marc Ruwisch

Tobias Kuhl

Peter Kattwinkel

Pascal Adolph

Barry Van Stetten

Christian Kühn

Jürgen Geishoff

Harald Krieg

The invention proposes a particulate filter having a catalytic coating which contains two catalysts arranged one behind the other. The first catalyst is located in the gas inlet region of the filter and contains a palladium/platinum catalyst. The second catalyst is arranged downstream of the first catalyst and preferably contains platinum alone as catalytically active component. The combination of these two catalysts provides the coated filter with a good ageing stability and resistance to sulphur poisoning.

Catalytically coated particle filter and method for producing the same and its use

The present invention is directed to a particle filter to remove soot from the exhaust gas of a diesel engine. The particle filter contains a catalytically active coating on a filter body to accelerate bum-off during a regeneration phase of the soot particles collected on the filter. The particle filter comprises a catalytic coating containing compounds of barium, compounds of magnesium, and at least one element of the platinum group metals. The invention is further directed to a process for accelerated combustion of soot particles collected on the filter from lean exhaust gas of a diesel engine in which the soot particles have a soot ignition temperature and the particle filter is actively regenerated from time to time by raising the temperature of the particle filter above the soot ignition temperature and burning off the soot particles.

Particle filter having a catalytically active coating to accelerate burning off accumulated soot particles during a regeneration phase

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Freigericht, Germany

Roger Staab