Patent ID: 7686949

Claim:
An aromatics saturation process for lube oil boiling range feedstreams comprising: a) contacting a lube oil boiling range feedstream containing aromatics, nitrogen and organically bound sulfur contaminants in a first reaction stage operated under effective hydrotreating conditions and in the presence of hydrogen-containing treat gas with a conventional hydrotreating catalyst comprising about at least one Group VIII metal oxide and at least one Group VI metal oxide thereby producing a reaction product comprising at least a vapor product and a liquid lube oil boiling range product; and b) contacting said reaction product with a second hydrotreating catalyst in the presence of a hydrogen-containing treat gas in a second reaction stage operated under effective hydrotreating conditions, wherein said second hydrotreating catalyst consisting essentially of: i) about 45 wt. % to about 55 wt. % of an inorganic, porous, non-layered, crystalline, mesoporous support material; ii) about 45 to about 55 wt % of a binder material; and iii) a hydrogenation-dehydrogenation component selected from the Group VIII noble metals and mixtures thereof.