(19)

(11)

EP 0 788 533 A1

(12)

(43) Date of publication: 13.08.1997 Bulletin 1997/33 (21) Application number: 95935723.0 (22) Date of filing: 13.10.1995

(51) International Patent Classification (IPC):  B01J 29/ 74( . ) C10G 73/ 00( . ) C10G 45/ 64( . ) C10G 73/ 38( . ) (86) International application number: PCT/US1995/012823 (87) International publication number: WO 1996/013563 (09.05.1996 Gazette 1996/21)

(84) Designated Contracting States: BE DE ES FR GB IT NL (30) Priority: 27.10.1994 US 19940329914 (71) Applicant: MOBIL OIL CORPORATION Fairfax, Virginia 22037-0001 (US)	(72) Inventors: APELIAN, Minas, Robert Vincentown, NJ 08088-8976 (US) DOUGHERTY, Richard, Charles Moorestown, NJ 08057-2859 (US) RUBIN, Mae, Koenig Bala Cynwyd, PA 19004-1431 (US) (74) Representative: Lawrence, Peter Robin Broughton  GILL JENNINGS & EVERY, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)