WO2026052959 - METHOD FOR TREATING EXHAUST GAS USING A ZONED AMMONIA SLIP CATALYST FOR IMPROVED SELECTIVITY, ACTIVITY AND POISON TOLERANCE
National phase entry is expected:
Publication Number
WO/2026/052959
Publication Date
12.03.2026
International Application No.
PCT/GB2025/051943
International Filing Date
04.09.2025
Title **
[English]
METHOD FOR TREATING EXHAUST GAS USING A ZONED AMMONIA SLIP CATALYST FOR IMPROVED SELECTIVITY, ACTIVITY AND POISON TOLERANCE
[French]
PROCÉDÉ DE TRAITEMENT DE GAZ D'ÉCHAPPEMENT À L'AIDE D'UN CATALYSEUR À GLISSEMENT D'AMMONIAC ZONÉ POUR UNE SÉLECTIVITÉ, UNE ACTIVITÉ ET UNE TOLÉRANCE AU POISON AMÉLIORÉES
Applicants **
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventors
CASTANON RODRIGUEZ, Alba
GREEN, Alexander Nicholas Michael
GREENHAM, Neil David
JENKINS, Caitlin Lucy
PAGE, Samuel John
Priority Data
24198470.7
04.09.2024
EP
Application details
| Total Number of Claims/PCT | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2057 | |
| EPO | Filing, Examination, Granting | 8801 | |
| Japan | Filing, Examination, Granting | 2229 | |
| South Korea | Filing, Examination, Granting | 2096 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,923
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Abstract[English]
and ammonia. The catalytic article comprises a substrate; a first catalytic region, deposited on the substrate comprising an ammonia slip catalyst (ASC) which comprises a first catalytic zone with a first PGM component and second catalytic zone with a second PGM component; and a second catalytic region deposited on the first catalytic region, comprising a selective catalytic reduction (SCR) catalyst; and wherein the loading of the second PGM component is greater than the loading of the first PGM component.[French]
et de l'ammoniac. L'article catalytique comprend un substrat ; une première région catalytique, déposée sur le substrat, comprenant un catalyseur à glissement d'ammoniac (ASC) qui comprend une première zone catalytique avec un premier composant PGM et une seconde zone catalytique avec un second composant PGM ; et une seconde région catalytique déposée sur la première région catalytique, comprenant un catalyseur de réduction catalytique sélective (SCR) ; et la charge du second composant PGM étant supérieure à la charge du premier composant PGM.