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EP 4 526 246 A1

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(43) Date of publication: 26.03.2025 Bulletin 2025/13 (21) Application number: 22757364.9 (22) Date of filing: 02.08.2022

(51) International Patent Classification (IPC):  C01B 3/38(2006.01) C01B 3/50(2006.01) C01B 3/52(2006.01) C01B 3/48(2006.01) C01B 3/56(2006.01) (52) Cooperative Patent Classification (CPC): C01B 3/382; C01B 3/384; C01B 3/48; C01B 3/501; C01B 3/56; C01B 2203/0233; C01B 2203/0244; C01B 2203/0288; C01B 2203/0405; C01B 2203/0415; C01B 2203/042; C01B 2203/0475; C01B 2203/0822; C01B 2203/0827; C01B 2203/142; C01B 2203/147; C01B 2203/148; C01B 3/52 (86) International application number: PCT/IB2022/057171 (87) International publication number: WO 2024/028636 (08.02.2024 Gazette 2024/06)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Air Products and Chemicals, Inc. Allentown, PA 18106 (US)	(72) Inventors: FARROKHPANAH, Sonia Surbiton KT5 8LQ (GB) FORESTER, Kelly Ann Harleysville, Pennsylvania 19438 (US) GRAHAM, David Ross Harleysville, Pennsylvania 19438 (US) SCHOONOVER, Michelle Macungie, Pennsylvania 18062 (US) HENRY, Donald E. Allentown, Pennsylvania 18104 (US) (74) Representative: Beck Greener LLP  Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)