PARTICULATE FILTER

WIPO Patent Application WO/2023/068269

A1

Disclosed is a wall flow-type particulate filter that reduces an increase in pressure loss due to coat layer formation. The particulate filter disclosed herein comprises a wall flow-type substrate and a coat layer formed on the substrate. The substrate comprises: an entrance-side cell, of which only the end on the exhaust gas inflow side is open; an exit-side cell, of which only the end on the exhaust gas outflow side is open; and a partition wall dividing the entrance-side cell from the exit-side cell, and having a plurality of pores communicating the entrance-side cell and the exit-side cell. The coat layer is provided on the walls of the pores and includes a first inorganic oxide and a second inorganic oxide. The average particle diameter of the first inorganic oxide is larger than the average particle diameter of the second inorganic oxide, and the weight percentage of the second inorganic oxide with respect to a total weight percentage of the first inorganic oxide and the second inorganic oxide of 100% is 10% to 50%.

WO/2020/230762	EXHAUST GAS PURIFICATION CATALYST DEVICE
JPH08323201	COMBUSTION CATALYST AND CATALYTIC COMBUSTION METHOD
WO/2021/032702	CATALYST FOR REDUCING AMMONIA EMISSIONS

TAKASAKI KOHEI (JP)
MURAWAKI KEISUKE (JP)
IKEBE MASATOSHI (JP)
MORISHIMA TAKESHI (JP)
OTA TAKAYA (JP)
SUGIURA KOJI (JP)
HIRABAYASHI TAKESHI (JP)
SATOU AKEMI (JP)

PCT/JP2022/038763

April 27, 2023

October 18, 2022

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CATALER CORP (JP)
TOYOTA MOTOR CO LTD (JP)

B01J35/04; B01D46/00; B01D53/94; F01N3/022; F01N3/035

WO2016056573A1	2016-04-14
WO2020255687A1	2020-12-24

JP2019122895A	2019-07-25
JP2017072033A	2017-04-13

ABE, Makoto (JP)

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