FIELD: chemistry.
SUBSTANCE: invention describes a catalyst composition for purifying exhaust gas from an internal combustion engine, which contains a porous oxide coating containing a zeolite, particles of a substrate made of an oxide of a refractory metal and a platinum group metal on the substrate of oxide particles of a refractory metal, wherein more than 90 % of the refractory metal oxide particles supporting PGM have a particle size greater than 1 mcm and d50 less than 40 microns. Also described are a catalytic article, a method for purifying exhaust gas, and methods for producing a catalytic article.
EFFECT: reduction of HC, CO and NOx pollutants in exhaust gases.
15 cl, 2 tbl, 8 ex
| Title | Year | Author | Number |
|---|---|---|---|
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| EXHAUST SYSTEM FOR ENGINE WITH COMPRESSION IGNITION, INCLUDING CAPTURE AREA OF VAPORIZED PLATINUM | 2017 |
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| DIESEL OXIDATION CATALYST HAVING A CAPTURE REGION FOR IMPURITIES IN EXHAUST GASES | 2016 |
|
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| METHOD OF COVERING A BASE WITH PARTICLE-STABILIZED FOAM | 2017 |
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| EMISSION CONTROL SYSTEM WITH TWC CATALYSTS AND SCR-HCT CATALYSTS | 2015 |
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