Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed
Patent
1976-06-08
1977-10-11
Levine, Herbert
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With preliminary treatment of feed
208 91, 208264, C10G 2302, C10G 3400
Patent
active
040533875
ABSTRACT:
A two-step process for preparing a stabilized lubricating oil resistant to oxidation and sludge formation upon exposure to a highly oxidative environment is provided. The first step of the present process comprises contacting a lubricating oil stock with elemental sulfur in the presence of a catalyst material selcted from the group consisting of alumina, silica, aluminosilicate, a metal of Groups II-A, II-B, VI-B or VIII of the Periodic Table of Elements, an oxide of a metal of Groups II-A, II-B, VI-B or VIII, a sulfide of a metal of Groups II-A, II-B, VI-B or VIII, clay, silica combined with an oxide of a metal of Groups II-A, III-A, IV-B or V-B, and combinations thereof in a flow reactor or under conditions comparable to those existing in a flow reactor. The second step of the present process comprises contacting the product of the first step with hydrogen in the presence of alumina impregnated with at least about 10 weight percent of MoO.sub.3 and at least about 2.5 weight percent of CoO, said impregnated alumina having at least 50 percent of its pores with a pore diameter of 50 Angstrom Units or more.
REFERENCES:
patent: 2967147 (1961-01-01), Cole
patent: 3436334 (1969-04-01), Orkin et al.
patent: 3793186 (1974-02-01), Guenther et al.
patent: 3904511 (1975-09-01), Heiba et al.
Audeh Costandi A.
Bridger Robert F.
Heiba El-Ahmadi I.
Barclay Raymond W.
Huggett Charles A.
Levine Herbert
Mobil Oil Corporation
Santini Dennis P.
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