Lubricating oil hydrotreating process
AssigneeGulf Research & Development Company
InventorsJohn J. Stanulonis, Joseph A. Tabacek, Roger F. Vogel
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Abstract
A lube oil feedstock is subjected to hydrotreating in the presence of hydrogen and a fluorine-promoted catalyst comprising nickel and molybdenum on a support wherein the nickel and fluorine are derived from an ammoniacal solution of nickel fluoride. The catalyst can be prepared by contacting the support with an alkaline impregnating solution consisting essentially of NH.sub.4.sup.+, Ni.sup.++, MO.sup.+VI and F.sup.-, said Ni.sup.++ and F.sup.- being supplied from nickel fluoride, in a single step employing the incipient wetness technique. The impregnated support is thereafter heated to drive off the alkaline component of the solution and thereby deposit the fluorine, nickel and molybdenum on the support.
Claims13
A process for hydrotreating a lubricating oil feedstock, which comprises contacting said feedstock and hydrogen under hydrotreating conditions with a catalyst formed by a process which consists essentially of contacting a refractory oxide support comprising between about 10 and about 75 weight percent silica with an impregnating solution consisting essentially of an aqueous, alkaline solution said solution consisting essentially of NH.sub.4.sup.+, Ni.sup.++, Mo.sup.+VI and F.sup.- in amounts sufficient to produce a supported catalyst composite containing between about 2 and about 8 weight percent nickel, between about 8 and about 25 weight percent molybdenum and between about 1 and about 5 weight percent fluorine based upon the total catalyst composite, using the one-step, incipient wetness technique, said Ni.sup.++ and F.sup.- being supplied from nickel fluoride, and thereafter heating said impregnated support to a temperature sufficient to drive off ammonia and deposit nickel, fluorine and molybdenum on said support.
Dependencies are inferred from the claim text.