|
Match
|
Document |
Document Title |
|
|
7531690 |
Palladium, tungsten and zirconium-based catalyst for production of oxygen-containing compound, production process of the catalyst, and production process of oxygen-containing compound using the catalyst
A catalyst for the production of an oxygen-containing compound, comprising palladium, tungsten and zirconium, a production process thereof, and a production process of an oxygen-containing compound...
|
|
|
7494630 |
Method of stripping metals from organic solvents
A new method to strip metals from organic solvents in a manner that allows for the recycle of the stripping agent. The method utilizes carbonate solutions of organic amines with complexants, in low...
|
|
|
7485267 |
Process for metals recovery from spent catalyst
The process of this invention is directed to the removal of metals from an unsupported spent catalyst. The catalyst is subjected to leaching reactions. Vanadium is removed as a precipitate, while a...
|
|
|
7452488 |
Tin oxide-based sputtering target, low resistivity, transparent conductive film, method for producing such film and composition for use therein
The present invention is directed to a composition consisting essentially of:
a) from about 60 to about 99 mole % of SnO 2 , and b) from about 1 to about 40 mole % of one or more materials...
|
|
|
7217366 |
Purification of ammonium metallate solutions
A process for reducing the content of alkali metal impurities (e.g., potassium) in ammonium metallate solutions is described. The process involves subjecting a feed solution containing ammonium...
|
|
|
7122164 |
Niobate-based octahedral molecular sieves
Niobate-based octahedral molecular sieves having significant activity for multivalent cations and a method for synthesizing such sieves are disclosed. The sieves have a net negatively charged...
|
|
|
6777511 |
Process for producing poly (meth) acrylates having reduced metal content
An industrially excellent process for producing a poly(meth)acrylate having a reduced metal content which comprises contacting a mixture of a poly(meth)acrylate and an organic solvent with an...
|
|
|
6730279 |
Production of pure molybdenum oxide from low grade molybdeniteconcentrates
High purity ammonium dimolybdate or molybdenum oxide is produced by the pressure oxidation of low grade molybdenite concentrates or molybdenum intermediates. The process entails nearly complete...
|
|
|
6709641 |
Method for extracting anions
The invention relates to a method of extracting anions based on metals of groups IV B to VIII of the periodic table from aqueous solutions thereof, wherein compounds of general formula are used...
|
|
|
6497849 |
Synthesis of heteropolyacids
This invention relates to a process for purifying a heteropolyacid which comprises: subjecting an aqueous solution comprising (i) the heteropolyacid and (ii) salt impurities to at least one...
|
|
|
6267936 |
Method for effecting solvent extraction of metal ions using hydrocarbon soluble aminomethylene phosphonic acid compounds
Solvent extraction of one or more metal ions from an aqueous solution in the presence of hydrocarbon-soluble aminomethylenephosphonic acid derivatives.
|
|
|
6180072 |
Process to recover metals from spent catalyst
There is provided a process to reclaim metals from catalysts, said process comprising collecting one or more catalyst containing at least one metal sulfide; leaching the catalyst in an atmospheric...
|
|
|
6171563 |
Supported liquid membrane process for chromium removal and recovery
The present invention is directed toward a two-step process for the removal and recovery of chromium from a feed solution, such as waste water, using supported liquid membranes (SLMs). In the first...
|
|
|
RE36990 |
Chemical process for the recovery of metal from an organic complex
A method for the recovery of a metal from an organic complex thereof, said method comprising treating the complex with a weakly acid aqueous solution of an alkali metal, an alkaline earth metal or...
|
|
|
6157036 |
System and method for automatically eluting and concentrating a radioisotope
A system and method for eluting one or more radioisotope processing elements, such as generators and/or concentration and purification components, with a gas over eluent delivery mechanism is...
|
|
|
6149883 |
Pressure oxidation process for the production of molybdenum trioxide from molybdenite
Molybdenum trioxide is produced from molybdenite by a pressure oxidation process comprising of the steps of forming an aqueous slurry of molybdenite, pressure oxidizing the slurry to form soluble...
|
|
|
6113868 |
Process for treating tungstate solutions to reduce molybdenum impurity and other impurity content
|
|
|
5945342 |
Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation
The present invention relates to methods for digesting diphosphonic acid substituted cation exchange resins that have become loaded with actinides, rare earth metals, or heavy metals, in a way that...
|
|
|
5891407 |
Process for producing pure ammonium metallates
The present invention relates to a process for the production of pure ammonium metallates of the metals W, Mo, V, Cr and Re, wherein alkaline metal salt solutions are adjusted to a pH value in the...
|
|
|
5881358 |
Composition for extracting transition metal and method for extracting transition metal using the same
A composition for extracting a transition metal which comprises as an active ingredient a cyclic phenol sulfide represented by the following formula (1): ##STR1## wherein X represents a hydrogen...
|
|
|
RE36118 |
Chemical process of separating metals from an organic complex
A method for the recovery of a metal from an organic complex thereof, said method comprising treating the complex with a weakly acid aqueous solution of an alkali metal or alkaline earth metal...
|
|
|
5820844 |
Method for the production of a purified MoO.sub.3 composition
A method for producing purified MoO 3 from MoS 2 . MoS 2 is initially oxidized to generate an impure MoO 3 product containing metallic contaminants and molybdenum sub-oxides. This product is...
|
|
|
5804151 |
Process for autoclaving molybdenum disulfide
A method for producing MoO 3 from MoS 2 . MoS 2 is combined with water to form a slurry which is then combined with at least one oxygen-containing oxidizing gas in a reaction chamber in order to...
|
|
|
5788844 |
Process for removing and recovering ammonia from organic metal extractant solutions in a liquid-liquid metal extraction process
A process for removing and recovering ammonia from the organic extraction phase in a metal liquid-liquid extraction process in which at least one ammoniacal aqueous solution (either a leach feed...
|
|
|
5736112 |
Aqueous oxidation of organic molybdenum compounds
Molybdenum oxides are recovered from an organic solvent solution of organic molybdenum compounds by adding the organic solvent solution to water and reacting the organic molybdenum compounds...
|
|
|
5731446 |
Molybdenum epoxidation catalyst recovery
An aqueous epoxidation process stream containing molybdenum and sodium values and organics is treated for organics removal as by incineration and an aqueous solution containing molybdenum and...
|
|
|
5682593 |
Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate
Use of diethyl dodecylphosphonate (DEDP) for the extraction of acids and metal salts from aqueous solutions.
|
|
|
5571489 |
Process for chromium recovery from aqueous solutions
A process for recovery of chromium in an aqueous solution comprising converting the chromium to chromyl chloride, separating the chromyl chloride from the aqueous solution, either as a heavy...
|
|
|
5525315 |
Process for removing heavy metal ions with a chelating cation exchange resin
The invention is for a process of removal of dissolved heavy metal cation contaminants from an organic solution. The process of the invention involves providing a chelating ion exchange resin...
|
|
|
5508010 |
Method of separating fission molybdenum
In a method of separating fission molybdenum from other fission products, wherein an aqueous solution of the fission molybdenum and the other fission products is supplied to a packet bed of...
|
|
|
5478539 |
Process for the recovery of metals
Metal values (especially uranium values) are extracted from aqueous solutions of metal oxyions in the absence of halogen ion using an imidazole of defined formula. Especially preferred extractants...
|
|
|
5439657 |
Molybdenum catalyst separation
The present invention relates to the separation of molybdenum from epoxidation process streams by extraction with water insoluble tertiary amine.
|
|
|
5431892 |
Process for recovering valuable metal from waste catalyst
A process for recovering valuable metals from a waste catalyst based on an alumina carrier includes (a) roasting the waste catalyst at a temperature range of 400° to 1,000° C. to obtain a roasted...
|
|
|
5420088 |
Electrochemical catalyst recovery method
A method of recovering catalyst material from latent catalyst material solids includes: a) combining latent catalyst material solids with a liquid acid anolyte solution and a redox material which...
|
|
|
5395601 |
Re-calcination and extraction process for the detoxification and comprehensive utilization of chromic residues
A re-calcination and extraction process for the detoxification and comprehensive utilization of chromic residues, comprising adding small amount of residue ore powder, sodium carbonate, or...
|
|
|
5273726 |
Removal of aluminum from ammonium molybdate solution
Aluminum is removed from ammonium molybdate solution by the use of Mg +2 in the solution to precipitate out the aluminum.
|
|
|
5271911 |
Method for removing potassium from molybdenum trioxide
An improved method for substantially removing potassium from potassium-bearing molybdenum trioxide involves the use of a leach solution in a weight ratio of seven parts of the leach solution to one...
|
|
|
5260039 |
Process for the two-phase extraction of metal ions from phases containing solid metal oxides, agents and the use thereof
A process is disclosed for the two-phase extraction of metal ions from phases containing solid metal oxides, which is characterized in that the solid metal oxides are brought into contact with a...
|
|
|
5250483 |
Method for treatment of catalysts using denitrifying bacteria
A method of releasing metals from catalysts in a form that is readily recoverable using denitrifying bacteria is disclosed. The method can be used to regenerate catalysts and to recover metals from...
|
|
|
5250274 |
Process for the production of sodium dichromate
The invention relates to a process for the production of sodium dichromate and sodium dichromate solutions by oxidative roasting of chrome ores under alkaline conditions, leaching of the furnace...
|
|
|
5229086 |
Removal of molybdenum from uranium-bearing solutions
A process for removing molybdenum from uranium bearing solutions reduces molybdenum contamination of uranium product. The process employs solvent extraction techniques to remove molybdenum by using...
|
|
|
5190735 |
Recovery of germanium-68 from irradiated targets
A process for selective separation of germanium-68 from proton irradiated molybdenum targets is provided and includes dissolving the molybdenum target in a hydrogen peroxide solution to form a...
|
|
|
5185133 |
Method for producing fine size yellow molybdenum trioxide powder
A method is disclosed for producing fine size molybdenum trioxide powder which involves heating ammonium dimolybdate in ambient atmosphere at a temperature of from about 455° C. to about 465° C....
|
|
|
5178746 |
Method for purification of trivalent chromium electroplating baths
A new method for purification of trivalent chromium electroplating baths contaminated with cationic metal ions is disclosed. In this purification process, the contaminated trivalent chromium is...
|
|
|
5171547 |
Recovery of chromium in high purity state from waste materials of etching operations
The present invention is directed to a method for treating a sludge containing substantial amounts of chromium, aluminum, calcium, iron, and phosphorous. The method comprises forming a slurry of...
|
|
|
5167938 |
Process for strontium-82 separation
A process for selective separation of strontium-82 and strontium-85 from proton irradiated molybdenum targets comprises dissolving the molybdenum target in a hydrogen peroxide solution to form a...
|
|
|
5120523 |
Method for dissolution of metal
A metal is dissolved by a method which comprises establishing contact of the metal with a quaternary ammonium compound and a halogenated hydrocarbon or with a quaternary ammonium compound, a...
|
|
|
5078978 |
Pyridine-containing alkoxysilanes bonded to inorganic supports and processes of using the same for removing and concentrating desired ions from solutions
A method is disclosed for the quantitative removal and concentration of desired transition metal ions from a source solution which may contain larger concentrations of other metal and H + ions....
|
|
|
5066469 |
Leaching cobalt from metal-containing particles
A process is disclosed to extract cobalt and optionally, at least one metal value selected from the group consisting of molybdenum, nickel, tungsten, and vanadium from metal-containing particles,...
|
|
|
5024821 |
Solvent extraction process
A metal extraction process in which an aqueous leach solution containing metal values is contacted with a solution, in a water-immiscible organic solvent, of an extracting agent where the aqueous...
|