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8101755 |
Organometallic complex including pyrazine derivative
An organometallic complex is provided by which favorable red-color light emission can be obtained. Further, an organometallic complex having a peak of light emission at about 620 nm is provided...
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8097227 |
Method for thiosulfate leaching of precious metal-containing materials
Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ heap leaching or lixiviants that include one or more blinding...
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8092573 |
Purification of PGM species from mixtures thereof
A process for the production of a purified PGM selected from the group consisting of platinum and rhodium from an impure PGM source, the process comprising (a) obtaining an anhydrous PGM halide...
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8088346 |
Alkene hydrofunctionalization reactions
A reductive cross coupling reaction process for functionalization of a nucleophilic alkene can be achieved. The nucleophilic alkene and a nucleophilic cross coupling partner compound can be reacted...
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8062526 |
Separation of platinum group metals
A process for the chromatographic interseparation of rhodium in admixture with at least one base metal from a feed solution includes complexes of these metals. The process includes contacting the...
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8062620 |
Catalytic process for the conversion of Co (II)hydroxide in Co (III)oxidehydroxide
The present invention relates to a process for the conversion of cobalt(II)hydroxide into cobalt(III)oxidehydroxide (CoOOH) by reaction of the cobalt(II)hydroxide with oxygen in the presence of...
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8038969 |
Rare metal/platinum-group metal extractant and method for extracting rare metals and platinum-group metals
The present invention provides a rare metal/platinum-group metal extractant, which has a completely new structure compared with the conventional rare metal/platinum-group metal extractant and which...
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8030055 |
Method of biotreatment for solid materials in a nonstirred surface bioreactor
A method of biotreating and recovering metal values from metal-bearing refractrory sulfide ore using a nonstirred surface bioreactor is provided. According to the method, the surface of a plurality...
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8012905 |
Process for preparing platinum based electrode catalyst for use in direct methanol fuel cell
A method for preparing platinum (Pt) based nano-size catalyst which is useful as an electrode catalyst of a direct methanol fuel cell (DMFC). This method includes the implementation of a reduction...
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7998367 |
Metal-carbon nanotube composites for enhanced thermal conductivity for demanding or critical applications
According to various embodiments of the present teachings, there is a metal-carbon nanotubes composite and methods of making it. A method of forming a metal-carbon nanotube composite can include...
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7968064 |
Method for extraction of metals by methyliminobisalkylacetamide
The present invention provides a method for extraction of metals selected from Cr, Mo, Pd, Tc, W, Re, and Pu using a new extractant of methyliminobisalkylacetamide represented by a formula (I):...
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7955529 |
Synthesis for catalysis of bifunctional perovskite compound
This invention discloses the synthesis of a bifunctional La0.6Ca0.4Co1-xIrxO3 (x=0˜1) perovskite compound with a superb bifunctional catalytic ability for the oxygen reduction and generation in ...
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7951311 |
Non-lead resistor composition
A non-lead composition for use as a thick-film resistor paste in electronic applications. The composition comprises particles of Li2RuO3 of diameter between 0.5 and 5 microns and a lead-free frit....
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7951223 |
Method of separating rhodium from platinum and/or palladium
A method of separating rhodium from platinum and/or palladium includes; chloridizing a raw material including rhodium and at least platinum and/or palladium in chlorine atmosphere and obtaining a...
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7935173 |
Process for recovery of precious metals
A hydrometallurgical process for the recovery of metals selected from the group consisting of platinum, palladium, rhodium, ruthenium, iridium, and gold (PM) from solids includes dissolving the PM...
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7918918 |
Extractants for palladium and method of rapidly separating and recovering palladium using the same
Provided is a novel extractant for palladium capable of improving an extraction rate compared to the conventional extractant, DHS, and also capable of back-extracting palladium using an ammonia...
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7858056 |
Recovering metals from sulfidic materials
A process for recovering a precious metal from a sulfidic material comprises the steps of preparing an acidic aqueous halide solution having an oxidation potential sufficient to oxidize the...
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7829496 |
Process for preparing platinum based electrode catalyst for use in direct methanol fuel cell
The present invention discloses a method for preparing platinum (Pt) based nano-size catalyst which is useful as an electrode catalyst of a direct methanol fuel cell (DMFC). This method includes...
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7790646 |
Conversion of fine catalyst into coke-like material
A process for converting fine catalyst slurried in heavy oil into a coke-like material from which catalytic metals can be recovered comprises mixing fine catalyst slurried in heavy oil with...
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7754644 |
Noble metal particle and process of producing the same
The present invention provides a noble metal particle with an improved methanol-oxidation property. This noble metal particle has a platinum particle and ruthenium particles deposited on only part...
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7744834 |
Method for manufacturing metal nanoparticles
A method for manufacturing metal nanoparticles, the method including forming a mixture by dissociating a metallic salt of a metal selected from the group consisting of Ag, Pd, Pt, Au and an alloy...
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7740814 |
Composite materials and method of its manufacture
A novel solution route has been developed that after heat-treatment to 500-600° C. under inert atmosphere, yields highly porous composites of nano-sized metal (Ni) particle inclusions in ceramics ...
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7736606 |
Process for the recovery of value metals from base metal sulfide ores
A process for leaching a value metal from a base metal sulfide ore, comprising the step of leaching the ore with a lixiviant comprising a chloride, an oxidant and hydrochloric acid is disclosed....
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7731777 |
Method for processing anode sludge
The invention relates to a hydrometallurgical method for separating the precious metals and impurities of anode sludge obtained from copper electrolysis. According to the method, anode sludge...
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7722840 |
Method for thiosulfate leaching of precious metal-containing materials
Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ heap leaching or lixiviants that include one or more blinding...
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7713502 |
Process for recycling fuel cell components containing precious metals
The invention relates to a process for recycling fuel cell components containing fluorine-containing and precious metal-containing constituents: in this process, the fluorine-containing...
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7709135 |
Efficient process for previous metal recovery from cell membrane electrode assemblies
A method is provided for recovering a catalytic element from a fuel cell membrane electrode assembly. The method includes grinding the membrane electrode assembly into a powder, extracting the...
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7704469 |
Method for the recovery of ruthenium from used ruthenium oxide-containing catalysts
The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is sparingly soluble...
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7651979 |
Coordination complexes, and methods for preparing by combinatorial methods, assaying and using the same
The present invention relates to novel coordination complexes, methods for synthesizing and identifying coordination complexes, using combinatorial techniques, and assaying their activity. In...
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7635534 |
Simplified process for leaching precious metals from fuel cell membrane electrode assemblies
The membrane electrode assemblies of fuel cells are recycled to recover the catalyst precious metals from the assemblies. The assemblies are cryogenically embrittled and pulverized to form a...
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7622417 |
Synthesis and use of AEI structure-type molecular sieves
A method is disclosed of synthesizing an aluminophosphate or metalloaluminophosphate molecular sieve comprising an AEI structure type material, in which the rate of heating to the crystallization...
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7597863 |
Extractant for palladium and method for separation and recovery of palladium
There is provided a novel extractant for palladium capable of improving an extraction speed in comparison with a case of utilizing a DHS being a conventional extractant, and a method for separation...
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7582136 |
Recovery of gold from potassium iodide-iodine etching solution
A process for the recovery of gold from a potassium iodide-iodine solution is provided. The gold is precipitated from the solution using a weak acid, (e.g. ascorbic acid), a buffer, (e.g. sodium...
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7566436 |
Counter current mixing reactor
A mixing reactor for mixing efficiently streams of fluids of differing densities. In a preferred embodiment, one of the fluids is supercritical water, and the other is an aqueous salt solution....
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7563420 |
Method for recovering rhodium and silver from hydrochloric acid
Object: This invention provides a method of refining an Rh-containing solution also containing at least one type of impurities of heavy metals, alkaline earth metals, and Ag. Means for solving the...
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7553793 |
Method and system for recovering catalyst for fuel cell
A method for recovering a catalyst for a fuel cell includes a collection step in which a catalyst is collected by attracting, using a magnetic force, a magnetic material contained in at least one...
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7534285 |
Method and apparatus for the recovery of refractory mineral ores
A method for extraction a metal from a mineral ore including a refractory ore contained in a metal. The method includes concentration of refractory ore followed by micronization of the concentrate...
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7531149 |
Synthetic control of metal oxide nanocrystal sizes and shapes
A general, reproducible, and simple synthetic method that employs readily available chemicals permits control of the size, shape, and size distribution of metal oxide nanocrystals. The synthesis...
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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...
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7527771 |
Dissolving metal particles from supported catalyst using ultrasonic energy, solvent and etchant
A sample preparation method for characterization of nanoparticles embedded in the supports of heterogeneous catalysts, with improved particle dispersion, is introduced. The supported catalyst is...
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7514065 |
Ruthenic acid nanosheet and production method thereof
A layered ruthenic acid compound is converted to a protonic layered ruthenic acid hydrate, which is then converted to a layered alkylammonium-ruthenic acid intercalation compound to obtain a...
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7479262 |
Method for separating platinum group element
One object of the present invention is to provide a separation process that enables the efficient separation of selenium, tellurium, and platinum group elements from a material containing...
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7473406 |
Process for recovery of palladium from spent catalyst
The present invention relates to an improved process for the recovery of palladium from spent catalyst. The present invention particularly relates to a suitable method of catalyst recovery of...
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7455825 |
Method for manufacturing metal sulfide nanocrystals using thiol compound as sulfur precursor
Disclosed herein is a method for manufacturing metal sulfide nanocrystals using a thiol compound as a sulfur precursor. The method comprises reacting the thiol compound and a metal precursor in a...
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7410930 |
Recovering catalyst and carrier by exfoliating overcoat layer on the surface of a catalyst layer
The present invention is a method for recovering a catalyst from a catalyst body comprising a carrier having a catalyst layer formed on at least a part of the surface thereof, which comprises (a) a...
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7407605 |
Manufacturable CoWP metal cap process for copper interconnects
An aqueous seeding solution of palladium acetate, acetic acid and chloride.
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7354517 |
Separation of platinum group metals
A process for the chromatographic interseparation of rhodium in admixture with at least one base metal from a feed solution comprising complexes of these metals. The process comprises contacting...
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7341700 |
Method for recovery of metals from metal-containing materials using medium temperature pressure leaching
The present invention relates generally to a process for recovering copper and other metal values from metal-containing materials using controlled, super-fine grinding and medium temperature...
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7335306 |
Chromatographic medium
A chromatographic medium including thioether ligands bound to a cross-linked polymer matrix. The polymer is an organic polymer and the medium is hydrophilic. A method of manufacturing the media is...
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7285256 |
Precious metal recovery using thiocyanate lixiviant
Precious metal-containing mineral material is subjected to an acidic thiocyanate leach to dissolve the precious metal as a precious metal-thiocyanate complex. A feed of the thiocyanate leach...
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