Catalytic cracking process for improved octane

A process for catalytically cracking a hydrocarbon feedstock having normal boiling points above 220.degree. C. comprising the steps of:

• (a) contacting the feedstock in a reaction zone under cracking conditions in the absence of added molecular hydrogen with a catalyst comprising a zeolitic crystalline silicate having substantially uniform pore openings with a maximum diameter of from 5.5 to 7.0 Angstroms and substantially uniform cages with a maximum cage dimension of from 5.5 to 7.0 Angstroms, said aluminosilicate having disposed within its internal pore structure from 0.01 to 1,000 ppm calculated as the elements by weight based on said catalyst of an active metal or compound thereof selected from the group consisting of platinum, palladium, iridium, rhodium, osmium, ruthenium, copper and their mixtures;
• and
• (b) regenerating the catalyst by contacting the catalyst with molecular oxygen under regeneration conditions in a regeneration zone.

A process for catalytically cracking a hydrogen feedstock having normal boiling points above 220.degree. C. comprising the steps of:

• (a) contacting the feedstock in a reaction zone under cracking conditions in the absence of added molecular hydrogen with a catalyst comprising a zeolitic crystalline aluminosilicate having substantially uniform pore openings with a maximum diameter of from 5.5 to 7.0 Angstroms and substantially uniform cages with a maximum cage dimension of from 5.5 to 7.0 Angstroms, said aluminosilicate having disposed within its internal pore structure from 0.01 to 1,000 ppm calculated as the elements by weight based on said catalyst of an active metal or compound thereof selected from the group consisting of platinum, palladium, iridium, rhodium, osmium, ruthenium, copper and their mixtures;
• and
• (b) regenerating the catalyst by contacting the catalyst with molecular oxygen under regeneration conditions in a regeneration zone.