FIELD: chemistry.
SUBSTANCE: present invention relates to a catalyst material for the oxidation of NO comprising a catalyst carrier including a ceria-alumina support having platinum and palladium dispersed on the support, wherein the ratio of platinum to palladium by weight is at least 1:1, and amount of ceria in the support is in the range of 1 % to 12 % by weight. Also provided is a lean burn engine exhaust gas treatment system, comprising said catalyst material, lean burn engine exhaust gas treatment method comprising using said catalytic material and a variant of the above catalytic material.
EFFECT: providing Pd-enriched catalytic material in lean burn combustion systems having improved NO oxidation and at the same time improved temperature characteristic of CO light-off.
15 cl, 5 tbl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| EXHAUST SYSTEM FOR ENGINE WITH COMPRESSION IGNITION, INCLUDING CAPTURE AREA OF VAPORIZED PLATINUM | 2017 |
|
RU2754936C2 |
| EXHAUST SYSTEM FOR AN ENGINE WITH COMPRESSION IGNITION HAVING A GRIPPING REGION FOR EVAPORATING PLATINUM | 2016 |
|
RU2730511C2 |
| THERMALLY REGENERATED ADSORBENT OF NITROGEN OXIDES | 2007 |
|
RU2436621C2 |
| CATALYSED SOOT FILTER FOR TREATING THE EXHAUST GAS OF COMPRESSION IGNITION ENGINE | 2013 |
|
RU2650522C2 |
| DIESEL OXIDISING CATALYST, HAVING NO ADSORBER ACTIVITY | 2015 |
|
RU2704801C2 |
| EXHAUST GAS CATALYST CONTAINING TWO DIFFERENT NOBLE METAL-MOLECULAR SIEVE CATALYSTS | 2014 |
|
RU2680525C1 |
| CATALYZED BLOCK CARRIER | 2012 |
|
RU2618058C2 |
| DIESEL OXIDATION CATALYST AND EXHAUST SYSTEM | 2015 |
|
RU2750162C2 |
| OXIDATION CATALYST FOR TREATMENT OF EXHAUST GAS OF ENGINE WITH COMPRESSION IGNITION | 2013 |
|
RU2668272C2 |
| OXIDATION CATALYST FOR THE TREATMENT OF ENGINE EXHAUST GAS WITH COMPRESSION IGNITION | 2013 |
|
RU2755297C2 |
