EXHAUST GAS PURIFICATION CATALYST

WIPO Patent Application WO/2022/176529

A1

Provided is a wall-flow-type exhaust gas purification catalyst which has excellent PM trapping performance and has a small initial pressure loss. The exhaust gas purification catalyst (1) is provided with a catalyst-applied filter (2) and powdery inorganic particles (3). The catalyst-applied filter (2) includes a filter base material (21) and a catalyst layer (22) provided on a pore wall in the filter base material (21). The catalyst-applied filter (2) has a first end part, a second end part, a filter partitioning wall (21W), an inlet-side cell, and an outlet-side cell. The filter partitioning wall (21W) is porous. The inlet-side cell is opened at the first end part, and is closed at the second end part. The outlet-side cell is opened at the second end part, and is closed at the first end part. The inlet-side cell and the outlet-side cell are arranged adjacent to each other with the filter partitioning wall (21W) interposed therebetween. The powdery inorganic particles (3) are unevenly distributed on a surface adjacent to the inlet-side cell in the filter partitioning wall (21W) on a cross section parallel to the thickness direction of the filter partitioning wall.

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TASAKI RYO (JP)
ONOE RYOTA (JP)
IWAI MOMOKO (JP)
MATSUSHITA YAMATO (JP)

PCT/JP2022/002682

August 25, 2022

January 25, 2022

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CATALER CORP (JP)

B01D53/94; B01J35/04; B01J23/63; F01N3/022; F01N3/035; F01N3/24; F01N3/28

WO2010110011A1	2010-09-30
WO2020031975A1	2020-02-13
WO2019197177A1	2019-10-17

JP2013534463A

2013-09-05

KURATA, Masatoshi et al. (JP)

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