Cracking process with catalyst of combined zeolites
AssigneeExxon Research & Engineering Co.
InventorsElroy M. Gladrow, William E. Winter
Life of this patent
Estimating the term…
Abstract
A hydrocarbon cracking catalyst comprises an ultrastable Y-type crystalline zeolite, a small pore crystalline zeolite such as mordenite, an inorganic oxide matrix and, optionally, a porous inert component. The cracking catalyst has a high activity and selectivity for the production of high octane naphtha fractions from higher boiling point hydrocarbonaceous oils. Catalytic cracking processes utilizing the catalyst are also provided.
Claims12
A catalytic cracking process which comprises contacting a hydrocarbonaceous feed at catalytic cracking conditions in the absence of added hydrogen with a catalyst comprising:
- (a) an ultrastable Y-type crystalline aluminosilicate zeolite having less than about 1 weight percent rare earth metals, calculated as the elemental metal, based on the zeolite;
- (b) a small pore crystalline aluminosilicate zeolite selected from the group consisting of erionite, mordenite, zeolite A, chabazite and offretite;
- and
- (c) a catalytic inorganic oxide matrix.
Dependencies are inferred from the claim text.