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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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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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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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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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7255798 |
Recycling of used perfluorosulfonic acid membranes
A method for recovering and recycling catalyst coated fuel cell membranes includes dissolving the used membranes in water and solvent, heating the dissolved membranes under pressure and separating...
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7214644 |
Cross-coupling reactions
A method for producing a copper/palladium colloid catalyst useful for Suzuki couplings.
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7189380 |
Extraction of metals with diquaternary amines
Selective extraction of one or more metal anions from an aqueous solution, by contacting the aqueous solution with an organic solution including a diquaternary amine, wherein the diquaternary amine...
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7175818 |
Extraction of metals with diquaternary ammonium salts
Selective extraction of a metal anion complex, such as a platinum-group metal halide, from an aqueous solution containing other metal anions or anion complexes, by contacting the solution with a...
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7160525 |
Monodisperse noble metal nanocrystals
Nanoparticle compositions of noble metals, and methods of making them, are described. The nanoparticle compositions are made by reacting a salt or complex of a noble metal, such as Au, Ag, Cu or...
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7141227 |
Apparatus and method for preparing cerium oxide nanoparticles
This invention provides a method for preparing cerium oxide nanoparticles with a narrow size distribution. The cerium oxide nanoparticles obtained by the method of the invention are nearly all...
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7128840 |
Ultrasound enhanced process for extracting metal species in supercritical fluids
Improved methods for the extraction or dissolution of metals, metalloids or their oxides, especially lanthanides, actinides, uranium or their oxides, into supercritical solvents containing an...
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7122168 |
Shape anisotropic metal oxide nanoparticles and synthetic method thereof
In a metal oxide nanoparticle and a synthetic method thereof, and in particular to maghemite (γ-Fe 2 O 3 ) nanoparticles usable as a superhigh density magnetic recording substance by having good...
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7122167 |
Precious metal recovery from organics-precious metal compositions with supercritical water reactant
A supercritical oxidation process carried out in water is capable of oxidizing “organics” in precious metal organic compositions such as heterogeneous (Pt/C) or homogeneous precious metal...
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7118727 |
Method of making oxide particles
The present invention provides a process for producing particles, such as oxide nanoparticles, in a substantially water-free environment. The process involves mixing at least one metal compound of...
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7108839 |
Process for the recovery of palladium from spent silica
The present invention provides a provides a process for the recovery of precious metals from spent catalysts or adsorbent or inorganic waste, more specifically the process relates to recovery of Pd...
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7084287 |
Method of removing palladium
There is disclosed a method for removing palladium, which method is characterized by contacting a solution containing a palladium complex containing a phosphorus-type ligand in an organic solvent...
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7067090 |
Recovery of platinum group metals
This invention relates to the recovery of platinum group metals and, more particularly, to the recovery of platinum group metals from various sources by roasting the source material with one or...
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7045364 |
Electrochemical immunoassays using colloidal metal markers
The invention concerns a method for detecting or quantifying a biological substance coupled with a colloidal metal particle by electrochemical detection, characterised in that it comprises a step...
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7030051 |
Dirhodium catalyst compositions and methods for using same
Disclosed is method for increasing the efficiency of a dirhodium catalyst. The method includes providing a dirhodium catalyst, providing an organic ester, and contacting the dirhodium catalyst and...
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6866833 |
Substituted thiourea complexing agent and a method for extracting a noble metal from a matrix using the complexing agent
A substituted thiourea having the general formula
characterized in that each of R 1 and R 2 independently comprises an alkyl, alkaryl or aryl group or a substituted derivative thereof, and...
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6863872 |
Method for recovering rhodium from hydroformylation products
According to the invention, rhodium is recovered from hydroformylation products (feed material) by thermally processing the feed material in the presence of an adsorbent and, optionally, with the...
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6833021 |
Method for treating precious metal bearing minerals
A method of processing a mineral composition comprising a refractory material the method comprising milling the composition to a particle size of P 80 of less than 25 microns and leaching said...
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6764662 |
Recover and recycle rhodium from spent partial oxidation catalysts
A method for the recovery of rhodium from spent supported catalysts. In one embodiment, a method for recovering rhodium from a host material includes roasting the host material in air at a...
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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...
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6716402 |
Dissolution and decontamination process
The present invention concerns a process for dissolving ruthenium deposits that are present on a surface and a process for decontaminating the internal circuits of nuclear fuel reprocessing plants...
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6712998 |
Process for producing transparent conductive layer forming coating liquid
A process produces a transparent conductive layer forming coating liquid by combining a colloidal dispersion of fine silver particles, a reducing agent and at least one of an alkali metal aurate...
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6685896 |
Method for recovering rhodium from reaction products of oxosynthesis
The invention relates to a method for separating and recovering rhodium from reaction products of oxosynthesis, especially reaction products containing cobalt. The invention also relates to the...
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6673732 |
Process for catalytic ammonia production—preparation and recovery of ammonia synthesis catalyst
A catalyst active in ammonia synthesis with improved activity and a process for the recovery of useful components from the catalyst.
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6663793 |
Sol-gel-based composite materials for direct-write electronics applications
The present invention relates to a method for producing a low temperature 0-3 composite material, comprising the steps of providing a mixture, wherein the mixture comprises a liquid phase and a...
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6649091 |
Electrically conducting ruthenium dioxide aerogel composite
An electrically conducting composite is made by providing an aerogel structure of nonconducting material, exposing the aerogel structure to a mixture of RuO 4 and a nonpolar solvent in an inert...
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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...
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6589449 |
High-melting-point conductive oxide, method of manufacturing the same, and high-temperature electrically conductive material based on the oxide
A high-melting-point conductive oxide includes a mixture of a powdered Sr compound and Ru compound and/or Ru metal. The mixture is sintered at a primary temperature of 900° C. to 1300° C. in an...
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6579504 |
Hydrometallurgical treatment process for extraction of platinum group metals obviating the matte smelting process
A hydrometallurgical treatment process for extracting platinum group metals from a flotation concentrate in which the invention revolves around obviating the matte smelting and granulating process....
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6569358 |
Method for incorporating metal nanoparticles in porous materials
The method of preparing the porous material incorporating ultrafine metal particles comprises the following steps: (1) preparing surface-protected ultrafine metal particles by reducing metal ions...
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