C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/683.9, 260/7
C07C 1/22 (2006.01) B01J 29/90 (2006.01) C07C 1/20 (2006.01) C07C 2/66 (2006.01) C07C 5/22 (2006.01) C07C 5/27 (2006.01) C07C 6/12 (2006.01) B01J 38/10 (2006.01)
Patent
CA 1116642
ABSTRACT OF THE DISCLOSURE A method is provided for regeneration of a catalyst comprising a crystalline aluninosilicate aeolite characterized by a silica to alumina mole ratio of at least about 12, a constraint index, as hereinafter defined within the approximate range of 1 to 12, which catalyst has undergone controlled pre- coking by exposing the same to a thermally decomposable organic compound at a temperature in excess of the decomposition temper- ature of said compound but less than about 1200°F, at a hydrogen to organic compound mole ratio of between 0 and 1 to deposit at least about 1 weight percent coke thereon, such precoked cata- lyst having been deactivated by formation of a carbonaceous de- posit thereon as a result of use of the same in catalytically converting an organic charge under conditions less severe, i.e., at a lower temperature and/or a higher hydrogen concentration than those employed during said precoking which comprises con- tacting the aged catalyst with an atmosphere comprising hydrogen at a temperature between about 800°F and about 1200°F and a pressure between about 0 and about 2000 psig for a period of time sufficient to at least partially restore the activity of the catalyst. -1-
335230
Haag Werner O.
Olson David H.
Rodewald Paul G.
Kirby Eades Gale Baker
Mobil Oil Corporation
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