FIELD: chemistry.
SUBSTANCE: invention relates to a cold start catalyst comprising a molecular sieve catalyst and a platinum group metal catalyst. Molecular sieve based catalyst essentially consists of palladium and a molecular sieve. Catalyst with applied platinum group metal contains one or more platinum group metals and one or more inorganic oxides. Invention also includes exhaust system containing catalyst for cold start, and method of processing exhaust gas of internal combustion engine, including use of catalyst for cold start.
EFFECT: effective NOx adsorption and hydrocarbons at low temperature of 200 °C or lower and conversion and release of adsorbed NOx and HC at temperatures above said low temperature.
11 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| EXHAUST SYSTEM CONTAINING A CATALYTIC SCRF CONVERTER WITH AN OXIDATION ZONE | 2019 |
|
RU2774932C2 |
| DIESEL OXIDATION CATALYST AND EXHAUST SYSTEM | 2015 |
|
RU2750162C2 |
| EXHAUST SYSTEM COMPRISING PASSIVE NO-ABSORBER | 2016 |
|
RU2716957C2 |
| CATALYSED SOOT FILTER FOR TREATING THE EXHAUST GAS OF COMPRESSION IGNITION ENGINE | 2013 |
|
RU2650522C2 |
| ELECTRIC ELEMENT IN EXHAUST GAS FOR NOx AND SCR-HOLDING CATALYST | 2017 |
|
RU2716960C1 |
| PASSIVE NO ADSORBER COMPRISING NOBLE METAL AND SMALL PORE MOLECULAR SIEVE | 2014 |
|
RU2675905C1 |
| AMMONIA SLIP CATALYST | 2014 |
|
RU2675363C2 |
| COMBINED CATALYST FOR REMOVAL OF PERCOLATED AMMONIA AND CATALYST FOR EXOTHERMIC OXIDATION OF HYDROCARBONS | 2011 |
|
RU2583374C2 |
| NOx PASSIVE ABSORBER | 2018 |
|
RU2757911C2 |
| EMISSION CONTROL SYSTEM WITH TWC CATALYSTS AND SCR-HCT CATALYSTS | 2015 |
|
RU2689059C2 |
