Mineral oils: processes and products – Refining – Sulfur removal
Patent
1976-06-08
1977-05-03
Crasanakis, George
Mineral oils: processes and products
Refining
Sulfur removal
208293, 252 45, C10G 2302, C10M 108
Patent
active
040213340
ABSTRACT:
A stabilized lubricating oil resistant to oxidation and sludge formation upon exposure to an oxidative environment is prepared without forming undesirable color bodies therein by the steps (1) contacting the lubricating oil stock with a small amount of added elemental sulfur of from about 0.05 to about 1.0 percent by weight at a contact temperature of from about 25.degree. C. to about 130.degree. C. and (2) contacting the product of step (1) with hydrogen in the presence of alumina impregnated with at least about 10 weight percent MoO.sub.3 and at least about 2.5 weight percent CoO to remove any unreacted added elemental sulfur therefrom. The impregnated alumina catalyst of step (2) must have at least 50 percent of the pores with a pore diameter of 50 Angstrom Units or more.
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Gorring Robert L.
Scott Eric J. Y.
Smith Robert L.
Barclay Raymond W.
Crasanakis George
Huggett Charles A.
Mobil Oil Corporation
Santini Dennis P.
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