Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1988-01-13
1990-01-30
McFarlane, Anthony
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208 89, C10G 4720, C10G 6910
Patent
active
048971782
ABSTRACT:
A process for hydrocracking a crude oil feed, a hydrocracking catalyst employed therein, and a process for the preparation of this catalyst are disclosed. The hydrocracking catalyst comprises a zeolitic aluminosilicate which has an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 6 and which has been treated by (i) thermal treatment at an effective temperature and for an effective time in the presence of steam, followed by (ii) ion-exchange with a solution containing ammonium ion; and (2) an effective amount of a hydrogenation component. In a preferred embodiment, the starting crystalline zeolitic aluminosilicate is a Y-type zeolite having an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least about 9 and a unit cell dimension (a.sub.o) of less than about 24.55 .ANG., and the steam treatment is carried out for a period sufficient to cause a decrease of not more than about 0.1 .ANG. in the unit cell dimension, thereby producing a Y-type zeolite product having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least about 9 and a unit cell dimension of less than about 24.45 .ANG..
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Best Donald F.
Gortsema Frank P.
Long Gary N.
Pellet Regis J.
Rabo Jule A.
McFarlane Anthony
UOP
Vasta, Jr. Vincent J.
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