Oxygen storage material, process for its preparation and its...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

Reexamination Certificate

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C502S349000

Reexamination Certificate

active

11263353

ABSTRACT:
An oxygen storage material comprising cerium oxide and at least one second oxide of a metal M1is disclosed as well as a process for manufacturing the material and the use of this material in an exhaust gas cleaning catalyst. In a preferred embodiment the oxygen storage material comprises particles from a Ce/M1mixed oxide solid solution coated with an oxide of another metal M2. Metal M1e.g. can be calcium or zirconium while metal M2most preferably is aluminum.

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