Hydrocracking process utilizing a catalyst having a reduced zeol

Details Hydrocracking process utilizing a catalyst having a reduced zeol Hydrocracking process utilizing a catalyst having a reduced zeol

1987-11-10

1989-08-15

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 89, 208111, C10G 6510

Patent

active

048571695

ABSTRACT:
A catalyst composition composed of a porous, inorganic refractory oxide in intimate combination with between about 40 weight percent and about 70 weight percent of a crystalline aluminosilicate Y zeolite. The Y zeolite contains ion-exchanged Group VIII noble metal cations and preferably has a silica-to-alumina mole ratio above about 6.0. Such a catalyst containing the recited amount of zeolite has been found to possess higher than expected activity when used to hydrocrack feedstocks in an ammonia-deficient atmosphere and to retain activity for hydrocracking in ammonia-deficient atmospheres after regeneration. The most preferred Y zeolite for use in the catalyst has a silica-to-alumina mole ratio between about 6.1 and about 7.0 and is prepared by contacting an ammonium-exchanged Y zeolite with an aqueous solution of ammonium hexafluorosilicate.

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J. W. Ward, "Design and Preparation of Hydrocracking Catalysts," Preparation of Catalysts III, Elsevier Science Publishers, 1983, pp. 587-616.

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