WO2026093734 - OXYGEN EVOLUTION REACTION CATALYST AND METHOD FOR ITS PREPARATION
National phase entry is expected:
Publication Number
WO/2026/093734
Publication Date
07.05.2026
International Application No.
PCT/GB2025/052356
International Filing Date
28.10.2025
Title **
[English]
OXYGEN EVOLUTION REACTION CATALYST AND METHOD FOR ITS PREPARATION
[French]
CATALYSEUR DE RÉACTION DE DÉGAGEMENT D'OXYGÈNE ET SON PROCÉDÉ DE PRÉPARATION
Applicants **
JOHNSON MATTHEY HYDROGEN TECHNOLOGIES LIMITED
5th Floor
2 Gresham Street
LONDON EC2V 7AD, GB
Inventors
EVANS, Gary
c/o Johnson Matthey
Blounts Court Road
Sonning Common
Reading RG4 9NH, GB
CARTHEY, Nicholas Andrew
c/o Johnson Matthey
Blounts Court Road
Sonning Common
Reading RG4 9NH, GB
STEVENS, James George
c/o Johnson Matthey
Blounts Court Road
Sonning Common
Reading RG4 9NH, GB
Priority Data
2415890.9
29.10.2024
GB
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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International Searching Authority |
EPO
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1552 | |
| EPO | Filing, Examination | 9730 | |
| Japan | Filing | 589 | |
| South Korea | Filing | 573 | |
| USA | Filing, Examination | 5910 |
Total: 18,354 USD
Abstract[English]
The present invention provides a process for preparing a ruthenium-based oxygen evolution reaction catalyst, the process comprising the steps of: (i) combining ruthenium powder and a peroxide salt to produce a powder mixture; (ii) carrying out thermal treatment on the powder mixture; (iii) dissolving the product from (ii) in water to produce a solution; (iv) reducing the pH of the solution from (iii) to effect a precipitation and form a solid and a supernatant; (v) separating the solid from the supernatant; and (vi) drying the solid.[French]
La présente invention concerne un procédé de préparation d'un catalyseur de réaction de dégagement d'oxygène à base de ruthénium, le procédé comprenant les étapes consistant à : (i) combiner une poudre de ruthénium et un sel de peroxyde pour produire un mélange de poudres ; (ii) effectuer un traitement thermique sur le mélange de poudres ; (iii) dissoudre le produit de (ii) dans de l'eau pour produire une solution ; (iv) réduire le pH de la solution de (iii) pour effectuer une précipitation et former un solide et un surnageant ; (v) séparer le solide du surnageant ; et (vi) faire sécher le solide.