Patent ID: 6902664

Claim:
A process for converting hydrocarbonaceous oils into products of lower average molecular weight and lower average boiling point comprising contacting said hydrocarbonaceous oils under hydrocracking conditions with a catalyst comprising (1) a minor amount of a low acidity, highly dealuminated ultrastable Y zeolite having an Alpha value of less than about 5 and Broensted acidity of from about 1 to about 20 micromole/g measured by FT-IR, (2) a homogeneous, amorphous silica-alumina cracking component having an SB ratio of from about 0.7 to about 1.3, wherein a crystalline alumina phase is present in an amount of no greater than about 10% and (3) a catalytic amount of hydrogenation component selected from the group consisting of a Group VI metal, a Group VIII metal, and mixtures thereof.