WO2025056865 - METHOD OF RECYCLING WASTE IONOMER MEMBRANE
National phase entry:
Publication Number
WO/2025/056865
Publication Date
20.03.2025
International Application No.
PCT/GB2024/051578
International Filing Date
20.06.2024
Title **
[English]
METHOD OF RECYCLING WASTE IONOMER MEMBRANE
[French]
PROCÉDÉ DE RECYCLAGE DE MEMBRANE IONOMÈRE USAGÉE
Applicants **
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventors
BASRA, Shireen Kaur
BURDETT, Harriet
MCCREE-GREY, Jonathan
Priority Data
2313846.4
12.09.2023
GB
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 | 2142 | |
| EPO | Filing, Examination, Granting | 10405 | |
| Japan | Filing, Examination, Granting | 2339 | |
| South Korea | Filing, Examination, Granting | 2282 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
21,908
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
A method of recycling a waste ionomer membrane comprising platinum, palladium and/or ruthenium disposed within an interior region of the waste ionomer membrane, the method comprising: (a) treating the waste ionomer membrane with a solution comprising an acid and an oxidant, wherein platinum, palladium and/or ruthenium is leached from the interior region of the waste ionomer membrane into the solution; and (b) separating the solution comprising leached platinum, palladium and/or ruthenium from the waste ionomer membrane which remains in solid form during the leaching process.[French]
L'invention concerne un procédé de recyclage d'une membrane ionomère usagée comprenant du platine, du palladium et/ou du ruthénium disposés à l'intérieur d'une région intérieure de la membrane ionomère usagée, le procédé consistant à : (a) traiter la membrane ionomère usagée avec une solution contenant un acide et un oxydant, le platine, le palladium et/ou le ruthénium étant lixiviés dans la région intérieure de la membrane ionomère usagée puis introduits dans la solution ; et (b) séparer la solution contenant du platine, du palladium et/ou du ruthénium lixiviés de la membrane ionomère usagée qui conserve la forme solide pendant le processus de lixiviation.