To provide a catalyst for converting hydrocarbonaceous oils to products of an average lower molecular weight and an average lower boiling point, and to provide a process for converting hydrocarbonaceous oils to products of an average lower molecular weight and an average lower boiling point using the catalyst.
A catalyst composition comprises a minor amount of a low acidity, highly dealuminated ultra stable Y zeolite having an Alpha value of less than about 5 and Broensted acidity measured by FT-IR from about 1-20 μmol/g, preferably from about 1-10 μmol/g, a homogeneous, amorphous silica-alumina cracking component having an SB ratio of about 0.7 to about 1.3, wherein a crystalline alumina phase is present in an amount of about 10% or less, preferably 5% or less, and a catalytic amount of a hydrogenation component selected from the group consisting of a Group VI metal, a Group VIII metal, and mixtures thereof.
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Hajime Asamura
Youichi Inoue
Naganuma Akio