WO2025027315 - CATALYST SYSTEM
National phase entry:
Publication Number
WO/2025/027315
Publication Date
06.02.2025
International Application No.
PCT/GB2024/052003
International Filing Date
30.07.2024
Title **
[English]
CATALYST SYSTEM
[French]
SYSTÈME CATALYSEUR
Applicants **
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventors
ARULRAJ, Kaneshalingam
LEPPELT, Rainer
MUENCH, Joerg
PIRAS, Irene
RAJ, Agnes Suganya
ZIESMANN, Martin
Priority Data
23188743.1
31.07.2023
EP
Application details
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2122 | |
| EPO | Filing, Examination, Granting | 8623 | |
| Japan | Filing, Examination, Granting | 2247 | |
| South Korea | Filing, Examination, Granting | 2251 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,983
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The present invention provides a catalyst system for treatment of an exhaust gas comprising: a first SCR catalyst comprising an iron (Fe) ion-exchanged molecular sieve having a ferrierite (FER) or MFI framework, wherein the first SCR catalyst is provided on or within a substrate; and a second SCR catalyst comprising vanadium, wherein the second SCR catalyst is provided on or within a substrate; wherein the first and second catalysts are arranged such that in use exhaust gas contacts the first SCR catalyst prior to contact with the second SCR catalyst. Also provided is an exhaust system, a method, use and vehicle incorporating or utilizing such a catalyst system.[French]
La présente invention concerne un système catalyseur pour le traitement d'un gaz d'échappement comprenant : un premier catalyseur SCR comprenant un tamis moléculaire qui a subi un échange d'ions fer (Fe) ayant une structure ferriérite (FER) ou MFI, le premier catalyseur SCR étant disposé sur ou à l'intérieur d'un substrat ; et un second catalyseur SCR comprenant du vanadium, le second catalyseur SCR étant disposé sur ou à l'intérieur d'un substrat ; les premier et second catalyseurs étant agencés de sorte que, lors de l'utilisation, le gaz d'échappement entre en contact avec le premier catalyseur SCR avant d'entrer en contact avec le second catalyseur SCR. La présente invention concerne également un système d'échappement, un procédé, une utilisation et un véhicule incorporant ou utilisant un tel système catalyseur.