288 results about "Molybdenum compounds" patented technology

Bis(alkylimido)-bis(alkylamido)molybdenum compounds, their synthesis, and their use for the deposition of molybdenum-containing films are disclosed.

There is disclosed a lubricating oil composition which contains from about 50 to 1000, preferably 50 to 500 parts per million of molybdenum from a molybdenum compound which is oil-soluble and substantially free of reactive sulfur, about 1,000 to 20,000, preferably 1,000 to 10,000 parts per million of a diarylamine and about 2,000 to 40,000 parts per million of a phenate. This combination of ingredients provides improved oxidation control and improved deposit control to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant.

There is disclosed a lubricating oil composition which contains from about 100 to 450 parts per million of molybdenum from a molybdenum compound which is substantially free of active sulfur and about 750 to 5,000 parts per million of a secondary diarylamine. This combination of ingredients provides improved oxidation control and friction modifier performance to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant.

A substantially zinc and phosphorous free lubricating oil meeting engine performance requirements contain an additive system containing metal detergents, at least one borated ashless dispersant, at least an amine antioxidant and a trinuclear molybdenum compound. The lubricant contains a minimum of 120 ppm boron and a minimum of 80 ppm molybdenum.

A lubricant composition is disclosed that comprises: (a) a lubricant and (b) at least one molybdenum-containing compound in the form of surface-capped nanosized particles of the general formula: (Z)_n(X—R)_m wherein Z is an inorganic moiety comprising molybdenum and sulfur in the form of particles having dimensions in the range of from about 1 to about 100 nm; (X—R) is a surface-capping reagent wherein R is a C₄ to C₂₀ straight or branched-chain alkyl or alkylated cycloalkyl radical or radicals and X is a functional group capable of specific sorption and/or chemical interaction with molybdenum/sulfur moiety; n is the number of molecules of Z in the particles; m is an integer representing the amount of surface-capping reagents relative to a single particle; and the ratio of m to n is in the range of from about 1:1 to about 10:1.

The invention provides a low-friction sliding mechanism, a low-friction agent composition, a friction reduction method, a manual transmission and a final reduction gear unit that can exert very excellent low friction characteristics to sliding surfaces present under various applications, and, in particular, that have more excellent low friction characteristics than that of a combination of an existing steel material and an organic Mo compound. The low-friction sliding mechanism has an oxygen-containing organic compound or an aliphatic amine compound interposed between sliding surfaces that a DLC coated sliding member and a sliding member form. The low-friction agent composition contains an oxygen-containing organic compound or an aliphatic amine compound. The friction reduction method includes supplying the low-friction agent composition between sliding surfaces that a DLC coated sliding member and a sliding member form. The manual transmission includes, as at least one of sliding members, a DLC coated sliding section. The final reduction gear unit includes, as at least one of sliding members, a DLC coated sliding section.

The present invention relates to an engine oil lubricant composition for use in internal combustion engines comprising one or more molybdenum containing compounds that deliver 1-1000 ppm molybdenum to the finished oil, one or more phosphorus containing compounds that deliver 25-650 ppm phosphorus to the finished oil, and one or more poly(meth)acrylate viscosity index improvers (VI improvers) that may or may not be functionalized, for improved fuel economy and turbocharger related deposits. In addition, the composition comprises an antioxidant system which is carefully balanced to provide improved fuel economy, comprising an aminic antioxidant, a phenolic antioxidant and an ashless dithiocarbamate. Additionally, the formulated oil may contain a dispersant poly(meth)acrylate, in addition to the PAMA VI improver, to reduce the amount of traditional succinimide dispersants.

The wet production process of extracting vanadium and molybdenum from waste aluminum-base molybdenum catalyst includes successively ball milling material, mixing material, roasting to sodidize, wet milling and hot soaking, dephoshorization to purify, deposition to extract vanadium and molybdenum successively. The present invention is developed on the basis of weight vanadiuim extracting process and apparatus and realizes the simultaneous extraction of valuable vanadium and molybdenum.

A lubrication composition providing excellent anti-wear protection for corrosion-resistant materials which comprises a major amount of a synthetic ester base oil, and a minor amount of a molybdenum compound and an anti-wear additive selected from the group consisting of 1,3,4-thiadiazole derivative as an anti-wear additive, the reaction products of 2,5-dimercapto-1,3,4-thiadiazole dimers and poly(ether)glycols, and 2,5-dimercapto-1,3,4-thiadiazole monomer and mixtures thereof. Also described is a method for imparting anti-wear properties to a corrosion resistant material, comprising using the lubricating composition of the invention.

A method for regeneration of a molybdenum-containing oxide fluidized bed catalyst which comprises impregnating a fluidized catalyst of a metal oxide containing molybdenum, bismuth and iron which has been deteriorated by being used for a reaction in production of acrylonitrile by ammoxidation of propylene, with a solution of a molybdenum compound and a solution of at least one compound containing at least one element selected from the group consisting of iron, chromium, lanthanum and cerium which are prepared separately or with a previously prepared mixed solution of the above compounds, drying the resulting catalyst and, then, firing the catalyst at a temperature of 500-700° C.

The lubricating oil composition for an internal combustion engine of the invention comprises a lubricating base oil having a urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater, an ash-free antioxidant containing no sulfur as a constituent element, and at least one compound selected from among ash-free antioxidants containing sulfur as a constituent element and organic molybdenum compounds.

The present invention is directed to a low sulfur and low phosphorus heavy duty diesel engine lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity and (b) one or more dispersants (c) one or more anti-oxidants and (d) one or more ash-containing detergents, wherein the lubricating oil composition is essentially free of zinc di-alkyl di-thiophosphates and contains no more than 0.175 weight percent sulfur and provided the lubricating oil composition does not contain alkylated and non-alkylated aromatic amines and tri-nuclear molybdenum compounds. The present invention is also directed to a low sulfur and low phosphorus heavy duty diesel engine lubricating oil composition comprising (a) an oil of lubricating viscosity (b) a borated dispersant and a non-borated dispersant (c) a molybdenum anti-oxidant and a phenolic anti-oxidant and (d) a low overbased calcium sulfonate and a high overbased calcium phenate, wherein the lubricating oil composition is essentially free of zinc di-alkyl di-thiophosphates and contains no more than 0.175 weight percent sulfur and provided the lubricating oil composition does not contain alkylated and non-alkylated aromatic amines and tri-nuclear molybdenum compounds. The present invention is also directed to method for lubricating a heavy duty diesel engines, which comprises lubricating the engine with a low sulfur and low phosphorus heavy duty diesel engine lubricating oil compositions of the present invention.

Extraction of vanadium and molybdenum from waste materials is carried out by physically or chemically pre-treating for raw materials by recovered oil, leaching out at a certain pH value, generating soluble sodium metavanadate and sodium molybdate, removing impurities, filtering, solid-liquid separating, precipitating ammonium metavanadate by amine salt, filtering, drying, decomposing, tabletting by smelting furnace to obtain sheeted vanadic anhydride, precipitating ammonium metavanadate filtrate, pouring it into vanadium extraction tank, extracting by organic phase, cleaning by saturated organic phase, reversed extracting, concentrating and crystallizing. It has better vanadium recovery rate and quality and more product yield.

A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having greater than 400 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having at least about 1100 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of less than or equal to about 4:1.

A lube base oil satisfying at least one of the following requirements (a) and (b). A lubricating oil composition for internal combustion engines is provided which comprises the lube base oil, an ash-free antioxidant containing no sulfur as a constituent element, and at least one member selected among ash-free antioxidants containing sulfur as a constituent element and organ omolybdenum compounds. Also provided is a lubricating oil composition for drive transmission devices which comprises the lube base oil, a poly(meth)acrylate-type viscosity index modifier, and a phosphorus compound. (a) The content of saturated matters is 90 mass% or higher and the proportion of cyclic saturated matters in those saturated matters is 10-40 mass%. (b) The lube base oil satisfies the relationship represented by the following expression (1). 1.440=n20-0.002OEv100=1.453 (1) [In the expression, n20 indicates the refractive index at 20 DEG C of the lube base oil and kv100 indicates the dynamic viscosity (mm2/s) at 100 DEG C of the lube base oil].

The invention discloses a method for extracting nickel and molybdenum from nickel-molybdenum ore, comprising the following steps of: (a) in the presence of an oxidizing agent, leaching the finely-ground nickel-molybdenum ore from an acid solution and filtering to obtain a leachate, wherein the oxidizing agent is sodium chlorate or potassium chlorate; (b) adding a first alkaline compound in the leachate, adjusting the pH value of the leachate to be 1.5-3.5 and filtering to respectively obtain a precipitation and a supernate; (c) adding a second alkaline compound in the supernate, adjusting thepH value of the supernate to be 5-7 and filtering to obtain a nickel-containing compound; and (d) leaching the precipitation in an alkali liquor, filtering to obtain a molybdenum-containing leachate,and extracting and re-extracting the molybdenum-containing leachate to obtain a molybdenum-containing compound. By using the method, the sodium chlorate or potassium chlorate is used as the oxidizingagent, the higher leaching rate of the nickel and molybdenum and the higher recovery rate of the nickel and molybdenum can be obtained.

A lubricating oil composition of the present invention for an internal combustion engine is prepared by blending (A) a perbasic calcium sulfonate and/or a perbasic calcium phenate having a TBN of 200 mgKOH/g or higher, (B) predetermined binuclear and/or trinuclear organic molybdenum compounds, and (C) a polyalkyl (meth)acrylate having an SSI of 30 or lower into a lubricating base oil composed of a mineral oil and/or a synthetic oil, in which the total content of molybdenum derived from the binuclear and trinuclear organic molybdenum compounds is 0.025% by mass or higher based on the total amount of the composition, and in which the lubricating oil composition has a high-temperature high-shear viscosity at 100° C. of 4.0 to 5.0 mPa·s, a high-temperature high-shear viscosity at 150° C. of 2.5 mPa·s or lower and a NOACK value (250° C., 1 hr) of 15% by mass or less.

A lubricated surface, a method for reducing wear between moving parts, and lubricants, and lubricant additive concentrates containing a wear reducing agent. The lubricated surface contains a base oil of lubricating viscosity, a hydrocarbon soluble titanium compound, a metal-free friction modifier and an amount of at least one hydrocarbon soluble magnesium compound effective to provide a reduction in surface wear greater than a reduction surface wear for a lubricant composition devoid of the titanium compound, metal-free friction modifier, and magnesium compound. The lubricant composition contains no more than about 800 ppm phosphorus and is devoid of calcium detergents and organic molybdenum compound.

The invention discloses a gasoline hydrogenation catalyst and a preparation method thereof. The preparation method includes the following steps that 1, pseudo-boehmite and sesbania cannabina powder are mixed, then a gelatinizing agent and deionized water are added to prepare a gamma-Al2O3 carrier; 2, the gamma-Al2O3 carrier and mesoporous Al2O3 are mixed to serve as a composite carrier; 3, impregnation liquid of a cobalt-containing compound and an additive is prepared, and the composite carrier in the step 2 is impregnated by using an impregnation method; 4, impregnation liquid of a molybdenum-containing compound and a nickel-containing compound is prepared, and the catalyst carrier obtained in the impregnation step 3 is impregnated; 5, impregnation liquid of a tungsten-containing compound is prepared, the catalyst carrier obtained in the impregnation step 4 is impregnated, and drying and calcination are performed so as to obtain the catalyst. The catalyst uses the gamma-Al2O3 and the mesoporous Al2O3 as the composite carrier, uses tungsten, molybdenum, nickel and cobalt as active components and also contains a catalytic activity promoting component phosphorus. The prepared catalyst can be used for hydrogenation treatment of light distillate oil and has high in hydrogen desulfurization and denitrification and olefin saturation activity.