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New doped zirconia with high thermal stability and high sulfur resistance have been developed for Diesel Oxidation Catalysts (DOC). The present work is focused on rare earths-doped zirconia and base metal-doped zirconia which are preferred carriers of precious metals to improve catalytic performance and durability.

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.