(19)

(11)

EP 4 100 495 A1

(12)

(43) Date of publication: 14.12.2022 Bulletin 2022/50 (21) Application number: 21700058.7 (22) Date of filing: 04.01.2021

(51) International Patent Classification (IPC):  C10L 1/00(2006.01) C10L 3/00(2006.01) C10L 1/16(2006.01) C10L 3/12(2006.01) (52) Cooperative Patent Classification (CPC): C10L 1/003; C10L 1/1608; C10L 1/1855; C10L 2230/16 (86) International application number: PCT/GB2021/050003 (87) International publication number: WO 2021/156598 (12.08.2021 Gazette 2021/32)

(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: 03.02.2020 GB 202001450 (71) Applicant: Johnson Matthey Public Limited Company London EC4A 4AB (GB)	(72) Inventor: MCCALLIEN, Duncan Durham Billingham Cleveland TS23 4ED (GB) (74) Representative: Atkinson, Ian Anthony  Johnson Matthey Technology Centre Blount's Court Sonning Common Reading RG4 9NH Reading RG4 9NH (GB)