CORE-SHELL TYPE OXIDE MATERIAL, METHOD FOR PRODUCING THE SAME, AND EXHAUST PURIFICATION CATALYST AND EXHAUST PURIFICATION METHOD USING THE SAME

摘要

To provide an oxide material that makes it possible to obtain a catalyst for exhaust purification having excellent NOx purification performance.SOLUTION: A core-shell type oxide material has a core composed of a yttria stabilized zirconia oxide particle with an average particle size of 0.1-50 μm, and a shell that covers 30% or more of the core surface and is composed of an alumina oxide thin film with an average thickness of 1-20 nm.SELECTED DRAWING: None