(19)

(11)

EP 4 126 764 A1

(12)

(43) Date of publication: 08.02.2023 Bulletin 2023/06 (21) Application number: 21721989.8 (22) Date of filing: 30.03.2021

(51) International Patent Classification (IPC):  C01B 39/02(1995.01) C01B 39/14(1995.01) (52) Cooperative Patent Classification (CPC): C01B 39/02; C01B 39/14 (86) International application number: PCT/IB2021/052615 (87) International publication number: WO 2021/198899 (07.10.2021 Gazette 2021/40)

(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 (30) Priority: 03.04.2020 IT 202000007141 (71) Applicant: Università degli Studi di Roma "La Sapienza" 00185 Roma (IT)	(72) Inventors: VILARDI, Giorgio 00185 Roma (IT) STOLLER, Marco 00185 Roma (IT) FERRINI, Mauro 00185 Roma (IT) SAVIANO, Giovanna 00185 Roma (IT) SANTONICOLA, Mariagabriella 00185 Roma (IT) (74) Representative: Raimondi, Adriana et al Cavattoni - Raimondi Viale dei Parioli, 160 00197 Roma 00197 Roma (IT)