(19)

(11)

EP 4 823 976 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24834173.7 (22) Date of filing: 10.12.2024

(51) International Patent Classification (IPC):  C01B 3/04(2026.01) F25J 1/00(2006.01) C01B 3/50(2026.01) C01B 3/56(2006.01) (52) Cooperative Patent Classification (CPC): C01B 3/047; C01B 2203/0465; C01B 2203/046; C01B 2203/146; C01B 3/506; C01B 3/56; C01B 2203/0894; C01B 2203/0883; F25J 2270/04; F25J 3/0219; F25J 3/0252; F25J 3/0257; F25J 2210/20; F25J 2205/04; Y02E 60/36 (86) International application number: PCT/US2024/059327 (87) International publication number: WO 2025/128530 (19.06.2025 Gazette 2025/25)

(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: 15.12.2023 EP 23217344 (71) Applicant: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude 75007 Paris (FR)	(72) Inventors: SHRIVASTAVA, Swatantra 60439 Frankfurt Am Main (DE) LUTZ, Michael 60439 Frankfurt Am Main (DE) ULBER, Dieter 60439 Frankfurt Am Main (DE) (74) Representative: Air Liquide  L'Air Liquide S.A. Direction de la Propriété Intellectuelle 75, Quai d'Orsay 75321 Paris Cedex 07 75321 Paris Cedex 07 (FR)