US 2024/0367145 A1 · EXHAUST GAS CLEANING CATALYST AND PRODUCTION METHOD THEREFOR

Abstract

An exhaust gas purification catalyst including: a substrate; and an adsorbent portion provided to the substrate and containing a Si-containing adsorbent material. The adsorbent portion includes a plurality of voids, and in a cross section orthogonal to an exhaust gas flow direction, the percentage of a total area of the voids that are present in the adsorbent portion and that each satisfy the expression below is greater than 5% to 30% or less with respect to an apparent area of the adsorbent portion present on the substrate. Expression: L/{2(πS)½}≤1.1. (L is a perimeter of the void in the cross section, and S is an area of the void in the cross section.)

Claims17

Dependent claims

An exhaust gas purification catalyst comprising:

a substrate;
and
an adsorbent portion provided to the substrate and containing a Si-containing adsorbent material, wherein:
the adsorbent portion includes a plurality of voids;
and
in a cross section orthogonal to an exhaust gas flow direction, the percentage of a total area of the voids that are present in the adsorbent portion and that each satisfy the expression below is greater than 5% to 30% or less with respect to an apparent area of the adsorbent portion present on the substrate:
L
/
{
2
⁢
(
π
⁢
S
)
1
/
2
}
≤
1.1
,
Expression
wherein L is a perimeter of the void in said cross section, and S is an area of the void in said cross section.

22 more elements

Dependencies are inferred from the claim text.

Exhaust gas cleaning catalyst and production method therefor

Life of this patent

Exhaust gas cleaning catalyst and production method therefor

Life of this patent

Abstract

Claims17