(19)

(11)

EP 1 855 785 A2

(12)

(88) Date of publication A3: 07.09.2007 (43) Date of publication: 21.11.2007 Bulletin 2007/47 (21) Application number: 06737640.0 (22) Date of filing: 10.03.2006

(51) International Patent Classification (IPC):  B01D 53/22(2006.01) (86) International application number: PCT/US2006/008481 (87) International publication number: WO 2006/099080 (21.09.2006 Gazette 2006/38)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (30) Priority: 11.03.2005 US 661085 P (71) Applicant: UOP LLC Des Plaines, IL 60017-5017 (US)	(72) Inventor: RICE, Lynn H. Des Plaines, Illinois 60017-5017 (US) (74) Representative: Chung, Hsu Min et al Boult Wade Tennant Verulam Gardens 70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)