(19)

(11)

EP 1 984 292 A1

(12)

(43) Date of publication: 29.10.2008 Bulletin 2008/44 (21) Application number: 06734879.7 (22) Date of filing: 13.02.2006

(51) International Patent Classification (IPC):  C01B 3/32(2006.01) (86) International application number: PCT/US2006/004942 (87) International publication number: WO 2007/094766 (23.08.2007 Gazette 2007/34)

(84) Designated Contracting States: DE ES FR GB IT (71) Applicant: UOP LLC Des Plaines, IL 60017-5017 (US)	(72) Inventors: OROSKAR, Anil R. Des Plaines, IL 60017-5017 (US) VANDEN BUSSCHE, Kurt M. Des Plaines, IL 60017-5017 (US) NEMETH, Laszlo T. Des Plaines, IL 60017-5017 (US) RAYNER, Christine M. Des Plaines, IL 60017-5017 (US) (74) Representative: Hayes, Adrian Chetwynd  Boult Wade Tennant, Verulam Gardens 70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)