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(11)

EP 4 798 763 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24791408.8 (22) Date of filing: 21.10.2024

(51) International Patent Classification (IPC):  C25B 1/042(2021.01) C25B 9/23(2021.01) C25B 15/08(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/042; C25B 15/085; C01B 3/56; H01M 8/0662; C25B 9/23; H01M 8/1246 (86) International application number: PCT/EP2024/079731 (87) International publication number: WO 2025/087865 (01.05.2025 Gazette 2025/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 27.10.2023 EP 23206364 (71) Applicant: Topsoe A/S 2800 Kgs. Lyngby (DK)	(72) Inventors: HANSEN, John Bøgild 2800 Kgs. Lyngby (DK) BLENNOW, Bengt Peter Gustav 2800 Kgs. Lyngy (DK) DANNESBOE, Christian 2800 Kgs. Lyngby (DK) HEIREDAL-CLAUSEN, Thomas 2800 Kgs. Lyngby (DK) SEHESTED, Jens 2800 Kgs. Lyngby (DK) SALA, Elena Marzia 2800 Kgs. Lyngby (DK) (74) Representative: Topsoe A/S  Haldor Topsøes Allé 1 2800 Kgs. Lyngby 2800 Kgs. Lyngby (DK)