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7335343 Preparation of iron pentacarbonyl  
Iron pentacarbonyl is prepared by reacting iron with carbon monoxide in suspension and in the presence of a mixture of alkali metal sulfide and sulfur as a catalyst.
7276220 Preparation of iron pentacarbonyl  
Iron pentacarbonyl is prepared by reacting iron with carbon monoxide in suspension and in the presence of a polysulfide of the general formula RS x R′ as a catalyst, where R is an organic radical...
7198770 Process for producing nickel carbonyl, nickel powder and use thereof  
A process for producing Ni(CO) 4 from carbon monoxide and a source of nickel selected from the group consisting of elemental nickel, a nickel compound or mixtures thereof, provided the nickel...
6929668 Process for production of hydrogen by partial oxidation of hydrocarbons  
The invention concerns a method for producing a gas mixture containing hydrogen and carbon monoxide, and optionally nitrogen, from at least a hydrocarbon such as methane, propane, butane or LPG or...
6746653 Process for recovering catalyst transition metals from salt-containing reaction mixtures  
Transition metals may be recovered from a salt-containing mixture containing at least one transition metal compound, salts, and organic compounds by separating from the salt-containing mixture a...
6624108 Vitrified carbon compositions  
Reticulated vitrified carbon compositions which contain particles of Cu, Sn, Zn, Pb, Ni, Fe, or alloys or mixtures thereof dispersed therein and reticulated vitreous carbon compositions wherein...
6596245 Process for the recovery and refining of rhodium  
The present invention relates to a process for the recovery and refining of rhodium starting from a mixture containing rhodium and other transition metals, including those of the platinum Group, as...
6358611 Ultrafine particles comprising an organometallic core and process for the production thereof  
Primarily dedicated to the production of ultrafine particles with good dispersion stability on a industrial scale, the invention provides ultrafine particles characterized in that each of its...
6309620 Carbonyl iron silicide powder  
A process for preparing carbonyl iron silicide comprises heat treatment of an iron/silicon mixture comprising a) from 20 to 99.9% by weight of finely divided carbonyl iron and b) from 0.1 to 80% by...
6153167 Generation of metal-carbonyl standards for the calibration of spectroscopic systems  
Methods and apparatus for preparing gaseous compositions comprising a metal carbonyl, preferably at ppm concentration, are disclosed. The methods comprise placing metal, preferably in the form of...
6077487 Process and apparatus of removing metal carbonyls and moisture from a gas  
A process and composition for removing metal carbonyls and moisture from a gas wherein the gas is contacted with a metal oxide, an organometallic oxide or mixtures thereof having a reduction...
6042796 Process and apparatus for removing carbonyls and moisture from a gas  
A process and composition for removing metal carbonyls and moisture from a gas wherein the gas is contacted with a metal oxide, an organometallic oxide or mixtures thereof having a reduction...
5612014 Compound semiconductor crystal  
A compound semiconductor crystal has a reduced dislocation density reduced. The compound semiconductor crystal doped with an impurity satisfies the following relations, wherein c.c. represents its...
5492682 Hydrogen purification  
An improved apparatus and process for the removal of gaseous impurities from an impure gas stream of hydrogen contaminated with carbon monoxide, and with one or more additional impurities such as...
5330570 Preparation and method for coating glass vessels  
Glass vessels are coated by spraying a solution containing 86 to 1,290 g/L of (HO) x Sn(C 2 O 4 ) y on the 500° to 600° C. hot outer surface of the vessels. The solution may contain oxalic...
5169808 Metal carbide production from carboxylate precursors  
Metal carbides can be formed by the pyrolysis of a composition comprising metal and carboxylic acid residues bonded therein, the composition being substantially free of extraneous carbon and also...
5130107 Minimizing cobalt catalyst loss in the production of alcohols by hydroformylation of olefins  
Cobalt is recovered from the oil/water mixed reaction product of oxonation by increasing the carbon dioxide level in the reaction product and adjusting the temperature to enhance the carbon dioxide...
5112442 Liquid vaporizing process for manufacturing iron oxide  
The present invention discloses a method and apparatus for the production of vapors of a liquid iron compound. The apparatus contains a vertical evaporator element which has an internal heating...
5096870 Preparation of iron nitrosyl carbonyl catalyst  
Catalysts suitable for the dimerization of a diolefin, e.g. butadiene to 4-vinylcyclohexene, are prepared by reacting (1) iron chloride and sodium nitrite or alternatively (2) iron nitrosyl...
5057469 Preparation of iron nitrosyl carbonyl catalyst  
Iron nitrosyl carbonyl catalyst is prepared by dissolving impure iron nitrosyl carbonyl in a solvent solution, then adding sufficient miscible non-solvent to the solution to result in separation of...
5011798 Chromium additive and method for producing chromium alloy using the same  
A chromium additive of the formula: Cr x C y O z where 0.04≤y≤0.35, and 0.03≤z≤0.30 for x=1, said additive having an X ray diffraction peak at d=3.32 Å (2θ=26.8°).
4973568 Preparation of a catalyst useful in the dimerization of butadiene  
Catalysts suitable for the dimerization of a diolefin, e.g. butadiene to 4-vinylcyclohexene, are prepared by reacting (1) iron chloride and sodium nitrite or alternatively (2) iron nitrosyl...
4842641 Synthesis of iron-cobalt powders  
This invention is directed to the preparation of Iron-cobalt powders by reacting iron tricobalt hydrido dodecacarbonyl with iron pentacarbonyl and pyrolyzing the resulting metal-organic iron cobalt...
4762699 Synthesis of molybdenum hexacarbonyl  
Molybdenum hexacarbonyl is prepared by carbonylating diammonium oxopentachloromolybdate (V) (NH 4 ) 2 (MoOCl 5 ) at pressures up to about 2000 psig and temperatures up to about 150° C. in a...
4579722 Process for treating alumina raw materials  
The invention relates to a process for deironing red mud and bauxite and for the preparation of a raw material for alumina industry and of iron pentacarbonyl which comprises (a) activating the...
4576809 Preparation of alkali or alkaline earth metal cobalttetracarbonylates and catalysts of carbonylation reactions therewith  
Alkali or alkaline earth metal cobalttetracarbonylates well suited for catalyzing carbonylation reactions, e.g., the carbonylation of organic compounds comprising halomethyl functions, are facilely...
4514380 Method of preparing tetrarhodium dodecacarbonyl  
An improved process for making tetrarhodium dodecacarbonyl, Rh 4 (CO) 12 , reacts RhCl 3 .xH 2 O with CO under about 200 psig (14.06 kg/cm 2 ) at a temperature of about 50° C. in the presence of...
4496532 Ruthenium carbonylates and processes for their preparation  
The invention provides the novel ruthenium carbonylate anions [Ru 4 (CO) 11 ] 6 - and [Ru 6 (CO) 17 ] 4 - and [Ru 6 (CO) 16 ] 6 -, together with the salts and acids of these anions. The...
4476103 Catalytic production of metal carbonyls from metal oxides  
This invention relates to the formation of metal carbonyls from metal oxides and specially the formation of molybdenum carbonyl and iron carbonyl from their respective oxides. Copper is used here...
4454244 New compositions  
Compositions conforming to the formula A x + + B y + ++ (OH) 2x +3y-nz D z n -.tH 2 O wherein A is a divalent metal, B is a trivalent metal, D is a polyanion, x, y, z and t are numbers greater...
4408069 Conversion of methanol to methyl acetate using iron-cobalt catalyst  
A homogeneous catalytic process for the conversion of methanol to methyl acetate. The process comprises contacting CO with methanol in the presence of a catalytically effective amount of an...
4404119 Process for recovery of cobalt oxo catalysts  
According to one embodiment of the improved process of this invention, dicobalt octacarbonyl is produced in an olefinic medium by contacting an aqueous solution of a tetracarbonylcobaltate metal...
4389347 Synthesis of heteronuclear tri-osmium carbonyl hydrides under gaseous hydrogen  
A process for producing a tri-osmium heteronuclear metal carbonyl compound comprises establishing a reaction mixture comprising an electron deficient cobalt, nickel, iron, molybdenum or rhodium...
4349522 Iron, nickel and cobalt tri-osmium carbonyl hydrides and their preparation  
H 2 Os 3 (CO) 10 has apparent Lewis base character and can be made to react with electron deficient iron, cobalt and nickel carbonyls, including salts of [Fe(CO) 4 ] 2 -, Fe 2 (CO) 9 , (η 5 ...
4349521 Ruthenium carbonylates, ruthenium carbonyl hydrides, osmium carbonylates and their preparation  
Disclosed are the novel cluster compounds [HRu 4 (CO) 13 ] 1 -, [Ru 4 (CO) 13 ] 2 -, [Ru 4 (CO) 12 ] 4 -, [HRu 4 (CO) 12 ] 3 -, and salts thereof, and H 4 Ru 4 (CO) 12 . Also disclosed...
4320064 Polynuclear rhodium carbonyl complexes  
Particular polynuclear rhodium carbonyl complexes are provided which are useful in the production of polyhydric alcohols such as ethylene glycol by the reaction of carbon monoxide and hydrogen....
4282197 Di-iron tri-osmium carbonyl hydride compound and its preparation  
Disclosed is the new pentanuclear bimetallic cluster complex H 2 Fe 2 Os 3 (CO) 15 . Such complex is made by reacting a salt of [HFe(CO) 4 ] 1 - and H 2 Os 3 (CO) 10 in a solvent which...
4250157 Method and apparatus for enriching the iron carbonyl content of a recycle gas stream  
A method and apparatus for enriching the iron carbonyl content of a recycle gas stream produced in an iron carbonyl decomposition or reaction process to enable reuse of the recycle gas stream in...
4234545 Process for the recovery of cobalt values  
A process for the recovery of cobalt from residues and/or wastes containing the same by converting the cobalt to cobalt oxide. Disclosed herein is a process for recovering cobalt values from...
4199520 Rhodium carbonyl sulfur cluster compounds  
A novel catalyst and process for the manufacture of polyhydric alcohols from synthesis gas. This novel catalyst is a rhodium carbonyl sulfur cluster compound. In particular, the anion cluster of...
4172883 Method of purifying metallurgical grade silicon employing reduced presure atmospheric control  
A method wherein a quartz tube is charged with chunks of metallurgical grade silicon and/or a mixture of such chunks and high purity quartz sand, and impurities from a class including aluminum,...
4142875 Process for the purification of scrubbing solvents by removal of Ni(CO).sub .  
A process for the purification of pressurized gases, such as those emanating from the partial gasification resp. combustion of fuel, which gases contain Ni(CO) 4 , which comprises contacting said...
4141960 Complex bimetallic salts  
Bimetallic salts, having the generic formula MM'X n wherein M is a Group IB metal, M' is a Group IIIA metal, X is a halide and n is equal to the sum of the valences of M and M', are prepared by...
4131640 Separating rhodium from solution containing rhodium carbonyl complexes and converting the separated rhodium into soluble rhodium carbonyl complexes  
A process for the separation of rhodium from a solution containing a rhodium carbonyl complex such as is obtained in the carbonylation of an alkanol or of an olefinically or acetylenically...
4115433 Catalyst and process for producing polyhydric alcohols and derivatives  
A novel catalyst and process for the manufacture of polyhydric alcohols from synthesis gas. This novel catalyst is a rhodium carbonyl sulfur cluster compound. In particular, the anion cluster of...
4115428 Catalyst and process for producing polyhydric alcohols and derivatives  
A novel catalyst and process for the manufacture of polyhydric alcohols from synthesis gas. This novel catalyst is a rhodium carbonyl carbido cluster compound. In particular the cluster compound is...
4096191 Hydroformylation of olefins using azoxy-dentated ligands  
At a temperature in the range 100° C. to 225° C. the destructive dissociation of cobalt carbonyl compounds to cobalt metal and residue is inhibited by the action of one or more azoxy-dentated...
4089886 Methanol purification  
Impure methanol may be treated to remove iron pentacarbonyl impurities by adding a source of hypochlorite ions to the impure methanol whereby the iron of the iron pentacarbonyl will be oxidized to...
4056386 Method for decomposing iron pentacarbonyl  
A homogeneous gaseous catalyst such as H 2 , NO, PF 3 , PH 3 , NH 3 or a halogen is used to speed the decomposition of gaseous iron pentacarbonyl into solid iron and gaseous carbon monoxide.
4049438 Non-ferrous metal recovery from deep sea nodules  
Manganiferous deep sea nodules containing non-ferrous metal values are selectively reduced to reduce manganic oxides to manganous oxide (MnO) and the non-ferrous metal values to the metallic state,...
Matches 1 - 50 out of 202 1 2 3 4 5 >