Exxon Research and Engineering Company

Union Carbide Corporation

James N Francis

Jule A Rabo

Morton Beltzer

Charles Leslie Angell

Jacob Joseph Habeeb

Mark Alan Greaney

Edward Ira Stiefel

Karla Schall Colle

Catherine L Coyle

Lavanga R Veluswamy

Paul Haruo Kasai

Roland Justin Bishop, Jr

Louis F Elek

It now has been discovered that lubricating compositions containing an additive formed by reacting Mo(CO).sub.6 with dixanthogen can be enhanced by the inclusion in the composition ligands selected from polydentate ligands and mixtures thereof. Thus, the present invention comprises a major amount of an aoil of lubricating viscosity and a minor but effective amount of an additive formed by reacting Mo(CO).sub.6 with dixanthogen of the formula (ROCS.sub.2).sub.2 wherein R is an organo group having a sufficient number of carbon atoms to render the additive soluble in the oil; and a polydentate ligand or mixtures thereof, the mole ratio of additive to ligand being in the range of from about 1:1 to about 1:4.

Enhancing antiwear and friction reducing capability of certain xanthate

In accordance with this invention, there is provided a lubricating composition comprising a major amount of an oil of lubricating viscosity and a minor amount of an additive having the formula Mo.sub.2 L.sub.4 wherein L is a ligand selected from xanthates and mixtures thereof and, in particular, xanthates having a sufficient number of carbon atoms to render the additive soluble in the oil. In general, the xanthate ligand, L, will have form about 2 to 30 carbon atoms.

Molybdenum sulfur antiwear and antioxidant lube additives

A lubricating oil composition is provided which comprises a major amount of an oil of lubricating viscosity and a minor amount of an additive formed by contacting molybdenum hexacarboxyl with dixanthogens of the formula (ROCS.sub.2).sub.2 wherein the R is an organo group having a sufficient number of carbon atoms to render the additive formed soluble in the oil. In general, R is the same or different alkyl, aralkyl, and alkoxylalkyl groups having from about 2 to about 20 carbon atoms and preferably R is an alkyl group having from about 4 to about 12 carbon atoms.

Antiwear, antioxidant and friction reducing additive for lubricating oils

Metal constituents are recovered from the heavy bottoms produced during the liquefaction of coal and similar carbonaceous solids in the presence of a catalyst containing a metal capable of forming an acidic oxide by burning the heavy bottoms in a combustion zone at a temperature below the fusion temperature of the ash to convert insoluble metal-containing catalyst residues in the bottoms into soluble metal-containing oxides; contacting the oxidized solids formed in the combustion zone with an aqueous solution of a basic alkali metal salt to extract the soluble metal-containing oxides in the form of soluble alkali metal salts of the metal-containing oxides and recycling the soluble alkali metal salts to the liquefaction zone. In a preferred embodiment of the invention, the bottoms are subjected to partial oxidation, pyrolysis, coking, gasification, extraction or a similar treatment process to recover hydrocarbon liquids and/or gases prior to the burning or combustion step.

Recovery of coal liquefaction catalysts

Carbon monoxide-containing gas streams are passed over a catalyst capable of catalyzing the disproportionation of carbon monoxide so as to deposit a surface layer of active surface carbon on the catalyst essentially without formation of inactive coke thereon. The surface layer is contacted with steam and is thus converted to methane and CO.sub.2, from which a relatively pure methane product may be obtained. Dilute carbon monoxide-containing streams, as from underground coal gasification with air or the effluent from blast furnace operations, can be used without pretreatment to convert the carbon monoxide and/or to separate inert gases therefrom. Conversion of the active surface carbon with high pressure steam enables a high pressure product methane stream to be generated without expensive compression equipment and high energy consumption. Nickel, cobalt, iron, ruthenium, rhenium and alloys thereof are preferred catalysts, with the surface area thereof being preferably at least about 10 m.sup.2 /gr. Conversion of the active surface carbon can also be accomplished by contact with hydrogen.

Cyclic two step process for production of methane from carbon monoxide

The Cu.sup.+.sup.+ cations of highly siliceous zeolites are found to undergo spontaneous reduction to Cu.sup.+ cations upon dehydration and to produce oxygen by oxidation of water.

Preparation of CU+ zeolites

Zeolitic molecular sieves having high SiO.sub.2 /Al.sub.2 O.sub.3 molar ratios and containing Ag.sup.+ cations are found to exhibit a high degree of selectivity and affinity for CO molecules and are capable of separating CO from gas streams even when water vapor is present.

Adsorption of carbon monoxide using silver zeolites

Zeolitic molecular sieves having high SiO.sub.2 /Al.sub.2 O.sub.3 molar ratios and containing Cu.sup.+ cations are found to exhibit a high degree of selectivity and affinity for CO molecules and are capable of separating CO from gas streams even when water vapor is present.

Growing community of inventors

Maplewood, NJ, United States of America

James N Francis