Oxygen storage/release material
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsMiho Hatanaka, Akihiko Suda
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Abstract
An oxygen storage/release material includes: a ceria-zirconia composite oxide porous body that has at least one ordered phase of a pyrochlore phase and a κ phase, and that has a central pore diameter of 70 nm to 1 μm as measured by a mercury penetration method, and in which a cumulative pore volume of pores that each have a pore diameter in the range of 0.5 times to 2 times the central pore diameter is 40% or more of the cumulative pore volume of pores that each have a pore diameter in the range of 10 nm to 10 μm as measured by the mercury penetration method.
Claims8
An oxygen storage/release material comprising:
- a ceria-zirconia composite oxide porous body that has at least one ordered phase of a pyrochlore phase and a κ phase, and that has a central pore diameter of 70 nm to 1 μm as measured by a mercury penetration method, and in which a cumulative pore volume of pores that each have a pore diameter in the range of 0.5 times to 2 times the central pore diameter is 40% or more of the cumulative pore volume of pores that each have a pore diameter in the range of 10 nm to 10 μm as measured by the mercury penetration method.
Dependencies are inferred from the claim text.