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EP 1 737 935 A1

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(43) Date of publication: 03.01.2007 Bulletin 2007/01 (21) Application number: 05733114.2 (22) Date of filing: 19.04.2005

(51) International Patent Classification (IPC):  C10G 45/64(2006.01) B01J 29/74(2006.01) B01J 23/46(2006.01) B01J 35/10(2006.01) B01J 23/42(2006.01) B01J 23/36(2006.01) C10G 45/62(2006.01) B01J 23/40(2006.01) B01J 21/12(2006.01) B01J 29/70(2006.01) B01J 23/44(2006.01) B01J 23/656(2006.01) (86) International application number: PCT/EP2005/004157 (87) International publication number: WO 2005/103207 (03.11.2005 Gazette 2005/44)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 23.04.2004 IT MI20040798 (71) Applicant: ENI S.p.A. 00144 Rome (IT)	(72) Inventors: CALEMMA, Vincenzo I-20097 San Donato Milanese (IT) CARATI, Angela I-20098 San Giuliano Milanese (IT) (74) Representative: De Gregori, Antonella et al Ing. Barzano' & Zanardo Milano S.p.A. Via Borgonuovo 10 20121 Milano 20121 Milano (IT)