Basf Corporation

Basf Mobile Emissions Catalysts LLC

Stefan Kielbassa

Wen-Mei Xue

John K Hochmuth

Attilio Siani

Markus Kinne

Jonn K Hochmuth

Siani Attilio

A layered catalyst composite for the treatment of exhaust gas emissions, effective to provide lean NOtrap functionality and three-way conversion functionality is described. Layered catalyst composites can comprise catalytic material on a substrate, the catalytic material comprising at least two layers. The first layer comprising rare earth oxide-high surface area refractory metal oxide particles, an alkaline earth metal supported on the rare earth oxide-high surface area refractory metal oxide particles, and at least one first platinum group metal component supported on the rare earth oxide-high surface area refractory metal oxide particles. The second layer comprising a second platinum group metal component supported on a first oxygen storage component (OSC) and/or a first refractory metal oxide support and, optionally, a third platinum group metal supported on a second refractory metal oxide support or a second oxygen storage component.

Integrated LNT-TWC catalyst

Growing community of inventors

Hannover, Germany

Stefan Kielbassa