Innovative Materials for Diesel Oxidation Catalysts, with High Durability and Early Light-Off

A new generation of hybrid zirconia oxides with high thermal stabilities has been developed. These new materials, covering a wide range of compositions, are investigated as carriers of precious metals for Diesel Oxidation Catalysts (DOC). In this paper, we show that they can be advantageously used for both Pt and Pd-based technologies to improve catalytic performance and possibly durability. Indeed, rare earths doped zirconia containing 60 wt% ceria used as Pd carrier show early light-off activity which is promising for reduced cold start emissions.