WO2026132793 - A SELECTIVE CATALYTIC REDUCTION (SCR) CATALYST
National phase entry is expected:
Publication Number
WO/2026/132793
Publication Date
25.06.2026
International Application No.
PCT/GB2025/060010
International Filing Date
12.12.2025
Title **
[English]
A SELECTIVE CATALYTIC REDUCTION (SCR) CATALYST
[French]
CATALYSEUR DE RÉDUCTION CATALYTIQUE SÉLECTIVE (SCR)
Applicants **
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventors
AMOS-REICHERT, Nikki Jane
BAUER, Juergen
LOPEZ-OROZCO, Sofia
MUENCH, Joerg Werner
Priority Data
24222402.0
20.12.2024
EP
Application details
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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 | 2039 | |
| EPO | Filing, Examination, Granting | 8736 | |
| Japan | Filing, Examination, Granting | 2215 | |
| South Korea | Filing, Examination, Granting | 2200 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,930
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Abstract[English]
The present invention provides an all-active, extruded selective catalytic reduction (SCR) catalyst, comprising a metal-loaded zeolite and a binder in the form of silica-alumina, wherein the silica content of the silica-alumina is in the range of about 1% to 20% by weight. The invention further provides a method of preparing such an SCR catalyst comprising (a) forming a plastic mixture having a solids content of greater than 50 % by weight by mixing together a metal-loaded zeolite or a zeolite in an H+ or NH4+ form and an active metal precursor; an inorganic matrix component comprising silica-containing boehmite, wherein the silica content of the silica-boehmite is in the range about 1% to 20% by weight; an organic auxiliary agent, an aqueous solvent and optionally inorganic fibres; (b) moulding the plastic mixture into a shaped article; and (c) calcining the shaped article to form a solid catalyst body.[French]
La présente invention concerne un catalyseur de réduction catalytique sélective (SCR) extrudé, entièrement actif, comprenant une zéolite chargée de métal et un liant sous la forme de silice-alumine, la teneur en silice de la silice-alumine se situant dans la plage d'environ 1 % à 20 % en poids. L'invention concerne en outre un procédé de préparation d'un tel catalyseur SCR comprenant les étapes suivantes : (a) formation d'un mélange plastique présentant une teneur en solides supérieure à 50 % en poids par mélange d'une zéolite chargée de métal ou d'une zéolite sous forme de H+ ou de NH4+ et d'un précurseur de métal actif ; un composant de matrice inorganique comprenant de la bœhmite contenant de la silice, la teneur en silice de la silice-bœhmite se situant dans la plage allant d'environ 1 % à 20 % en poids ; un agent auxiliaire organique, un solvant aqueux et éventuellement des fibres inorganiques ; (b) moulage du mélange plastique en un article façonné ; et (c) calcination de l'article façonné en vue de former un corps de catalyseur solide.