Zirconia-based porous body and method for manufacturing zirconia-based porous body
AssigneeDaiichi Kigenso Kagaku Kogyo Co., Ltd.
InventorKazuya Matsumoto
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Abstract
A zirconia-based porous body including an oxide of a rare earth element, in which when a pore volume in a pore distribution range of 30 nm or more and 200 nm or less after heating at 1150° C. for 12 hours under atmospheric pressure is defined as pore volume A and a pore volume in a pore distribution range of 30 nm or more and 200 nm or less before heating is defined as pore volume B, the pore volume A is 0.10 ml/g or more and 0.40 ml/g or less, and a pore volume retention ratio X in a pore distribution range of 30 nm or more and 200 nm or less represented by a formula [[(pore volume A)/(pore volume B)]×100] is 25% or more and 95% or less.
Claims13
A zirconia-based porous body comprising an oxide of a rare earth element, wherein
- when a pore volume in a pore distribution range of 30 nm or more and 200 nm or less after heating at 1150° C. for 12 hours under atmospheric pressure is defined as pore volume A and a pore volume in a pore distribution range of 30 nm or more and 200 nm or less before heating is defined as pore volume B,
- the pore volume A is 0.10 ml/g or more and 0.40 ml/g or less,
- the pore volume B is 0.40 ml/g or more and 1.0 ml/g or less, and
- a pore volume retention ratio X in a pore distribution range of 30 nm or more and 200 nm or less represented by formula (1) below is 25% or more and 95% or less:
- <Pore volume retention ratio X in pore distribution range of 30 nm or more and 200 nm or less>
- [(Pore volumeA)/(Pore volumeB)]×100 Formula(1).
Dependencies are inferred from the claim text.