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(11)

EP 4 798 535 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24883130.7 (22) Date of filing: 18.10.2024

(51) International Patent Classification (IPC):  C01B 3/50(2026.01) C01B 3/56(2006.01) B01D 53/54(2006.01) (52) Cooperative Patent Classification (CPC): B01D 53/8671; B01D 53/75; B01D 53/82; B01D 2255/2073; B01D 2255/20761; B01D 2253/108; B01D 2257/108; B01D 2257/504; B01D 2258/06; B01J 23/8892; B01J 35/615; B01J 35/633 (86) International application number: PCT/US2024/051941 (87) International publication number: WO 2025/090382 (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: 25.10.2023 US 202363593083 P (71) Applicant: Air Products and Chemicals, Inc. Allentown, PA 18106-5500 (US)	(72) Inventors: OVERA, Sean Michael Lansdale, Pennsylvania 19446 (US) LAU, Garret C. New Tripoli, Pennsylvania 18066 (US) YEH, Thomas M. Lansdale, Pennsylvania 19446 (US) CASTEEL, JR., William J. Fountain Hill, Pennsylvania 18015 (US) (74) Representative: Beck Greener LLP  Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)