Process for increasing gasoline yield and quality during catalytic cracking of high metals content charge stocks using an alumina-aluminum phosphate-silica-zeolite catalyst
AssigneeGulf Research & Development Company
InventorsHarold E. Swift, John J. Stanulonis, Elizabeth H. Reynolds
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Abstract
A process for cracking gasoline feedstock with greater selectivity of gasoline production and greater metals tolerance wherein, said gasoline feedstock is brought into contact with a catalyst comprising a zeolite dispersed in an alumina-aluminum phosphate-silica matrix, said matrix having outstanding thermal stability.
Claims17
A process for increasing the gasoline yield and quality in a petroleum cracking reaction by contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst comprising an alumina-aluminum phosphate-silica matrix characterized after calcination at 500.degree. C. for 16 hours as amorphous, and having an average pore radius of from about 10.degree. A to about 200.degree. A;
- a surface area ranging from about 50 m.sup.2 /g to about 300 m.sup.2 /g;
- a pore volume of from about 0.1 cc/g to about 1.2 cc/g;
- and wherein the alumina-aluminum phosphate-silica matrix has a mole percent ratio of from about 15:80:5 to about 60:10:30 and wherein said matrix retains at least 70% of its surface area when the matrix is additionally calcined at a temperature up to about 900.degree. C. for about 16 hours;
- said matrix being composited with from about 5 to about 50 weight percent of a REY-zeolite.
Dependencies are inferred from the claim text.