FIELD: catalysis.
SUBSTANCE: invention relates to a catalyst composition for treating exhaust gases, comprising an aluminosilicate molecular sieve having an AEI structure and a silica to alumina molar ratio of 20 to 30, and 1 to 5% by weight of a promoter metal, based on the total weight of the molecular sieve material. Invention also relates to methods (versions) for treating exhaust gases, to a catalytic article and an exhaust gas treatment system.
EFFECT: technical result consists in obtaining improved selective catalytic reduction catalysts that are capable of withstanding higher temperatures with little or no deactivation.
27 cl, 7 dwg, 1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| CATALYST FOR EXHAUST GAS PROCESSING | 2014 |
|
RU2771714C2 |
| AEI HIGH-SILICA ZEOLITE | 2017 |
|
RU2746017C2 |
| ZEOLITE BLEND CATALYSTS FOR TREATING EXHAUST GAS | 2014 |
|
RU2669556C2 |
| CATALYST PREVENTING AMMONIA BREAKTHROUGH WITH LOW FORMATION OF HO | 2016 |
|
RU2723550C2 |
| PLATINUM GROUP METAL (PGM) CATALYST FOR TREATING EXHAUST GASES | 2012 |
|
RU2665464C2 |
| SYNTHESIS OF AEI AND CU-AEI ZEOLITES | 2017 |
|
RU2743043C2 |
| MOLECULAR SIEVE CATALYST COMPOSITIONS, CATALYTIC COMPOSITES, SYSTEMS AND METHODS | 2015 |
|
RU2727801C2 |
| MOLECULAR SIEVE CATALYST COMPOSITIONS, CATALYTIC COMPOSITES, SYSTEMS AND METHODS | 2015 |
|
RU2704820C2 |
| EMISSION CONTROL SYSTEM WITH TWC CATALYSTS AND SCR-HCT CATALYSTS | 2015 |
|
RU2689059C2 |
| SYNTHESIS OF ZEOLITE WITH FLUORIDE SOURCE | 2017 |
|
RU2772519C2 |
