WO2025168913 - CATALYST MANUFACTURING METHOD WITH LOW LEVELS OF WASTE PRODUCTS
National phase entry is expected:
Publication Number
WO/2025/168913
Publication Date
14.08.2025
International Application No.
PCT/GB2025/050089
International Filing Date
20.01.2025
Title **
[English]
CATALYST MANUFACTURING METHOD WITH LOW LEVELS OF WASTE PRODUCTS
[French]
PROCÉDÉ DE FABRICATION DE CATALYSEUR AVEC DES FAIBLES NIVEAUX DE DÉCHETS
Applicants **
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventors
FEAVIOUR, Mark Robert
HADDAD, Jibreel
HIGGINS, Stephen Mark
SCHOOLER, Paul
Priority Data
2401614.9
07.02.2024
GB
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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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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| * | |
| * | |
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| * | |
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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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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2135 | |
| EPO | Filing, Examination, Granting | 10134 | |
| Japan | Filing, Examination, Granting | 2304 | |
| South Korea | Filing, Examination, Granting | 2253 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
21,566
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Abstract[English]
The specification describes a process for manufacturing a dealloyed supported catalyst, in particular a catalyst containing platinum and cobalt supported on carbon. The method involves the steps of: (i) deposition a transition metal and a platinum group metal onto a catalyst support; (ii) treating the product of step (i) to form alloy particles comprising the platinum group metal and the transition metal; (iii) leaching the transition metal with acid to obtain a leach solution; (iv) adjusting the concentration and/or composition of the leach solution, including a step of replenishing the transition metal by adding a transition metal hydroxide, a transition metal carbonate, a transition metal bicarbonate, a transition metal hydroxycarbonate, or a solution thereof, to the leach solution; and (v) repeating steps (i), (ii) and (iii) using the neutralised and replenished leach solution from step (iv) as the aqueous solution comprising a transition metal salt in step (i-a) or step (i-b), or to prepare the aqueous solution comprising a transition metal salt and a platinum group metal salt in step (i-c). By using the leach solution in the deposition step, the process generates low levels of waste products.[French]
La demande décrit un processus de fabrication d'un catalyseur supporté désallié, en particulier un catalyseur contenant du platine et du cobalt supportés sur du carbone. Le procédé comprend les étapes consistant à : (i) déposer un métal de transition et d'un métal du groupe du platine sur un support de catalyseur ; (ii) traiter le produit de l'étape (i) pour former des particules d'alliage comprenant le métal du groupe du platine et le métal de transition ; (iii) lixivier le métal de transition avec un acide pour obtenir une solution de lixiviation ; (iv) ajuster la concentration et/ou la composition de la solution de lixiviation, comprenant une étape consistant à reconstituer le métal de transition par l'ajout d'un hydroxyde de métal de transition, d'un carbonate de métal de transition, d'un bicarbonate de métal de transition, d'un hydroxycarbonate de métal de transition, ou d'une solution de celui-ci, à la solution de lixiviation ; et (v) répéter les étapes (i), (ii) et (iii) à l'aide de la solution de lixiviation neutralisée et reconstituée de l'étape (iv) en tant que solution aqueuse comprenant un sel de métal de transition à l'étape (i-a) ou l'étape (i-b), ou pour préparer la solution aqueuse comprenant un sel de métal de transition et un sel de métal du groupe du platine à l'étape (i-c). En utilisant la solution de lixiviation ) l'étape de dépôt, le processus génère de faibles niveaux de déchets.