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7601668 |
Methods for manufacturing bi-metallic catalysts having a controlled crystal face exposure
Improved bi-metallic nanocatalysts are manufactured using a control agent to produce nanoparticles having a controlled crystal face exposure. The bi-metallic nanocatalyst particles are manufactured...
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7534741 |
Supported nanocatalyst particles manufactured by heating complexed catalyst atoms
Methods for manufacturing supported catalysts and the use of these catalysts in, e.g., the direct synthesis of hydrogen peroxide. The nanocatalyst particles are manufactured from catalyst atoms...
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7514476 |
Stable concentrated metal colloids and methods of making same
Metal-containing colloids are manufactured by reacting a plurality of metal ions and a plurality of organic agent molecules to form metal complexes in a mixture having a pH greater than about 4.25....
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7501532 |
Process for producing hydrogen peroxide
A process comprising reacting hydrogen and oxygen in the presence of a noble metal, a thiol or thiolate, and a solvent is disclosed. The thiol or thiolate improves the hydrogen peroxide yield. The...
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7473412 |
Process for the purification of aqueous peroxygen solutions, solutions obtainable thereby and their use
Process for the purification of aqueous peroxygen solutions comprising the treatment of an aqueous peroxygen solution with (a) at least one membrane purification step, (b) optionally at least one...
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7442360 |
Hydrogen peroxide production in microchannel reactors
The present invention includes methods and apparatuses that utilize microchannel technology and, more specifically in exemplary form, producing hydrogen peroxide using microchannel technology. An...
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7422676 |
Apparatus and process for the synthesis of hydrogen peroxide directly from hydrogen and oxygen
A device is disclosed for the generation of hydrogen peroxide. The device produces hydrogen peroxide on an as-needed basis through the use of electrolysis of water, remixing hydrogen and oxygen in...
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7399344 |
Hydrogen peroxide recovery with hydrophobic membrane
An apparatus and process are presented that provide for the separation of hydrogen peroxide from a solution having an acid and hydrogen peroxide.
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7364718 |
Process for the production of hydrogen peroxide
Hydrogen peroxide is produced by reacting hydrogen and oxygen in the presence of a noble metal catalyst in a liquid reaction medium, the reaction being performed in the presence of a sulfuric acid...
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7332139 |
Process and device for carrying out reactions in reactor with slot-shaped reaction spaces
Reactions between at least two fluid reactants are performed in a reactor comprising wall elements ( 1 ), slot-shaped reaction spaces ( 3 ) and cavities ( 5 ) for conducting a fluid heat-carrier...
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7288240 |
Method for production of hydrogen peroxide with improved yield and selectivity by direct oxidation of hydrogen over palladium containing catalyst
A method for improving drastically both the selectivity and yield of hydrogen peroxide in the direct oxidation of hydrogen to hydrogen peroxide over a solid catalyst comprising palladium, which...
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7241908 |
Process for the direct synthesis of hydrogen peroxide
The invention is directed to the preparation of organic or aqueous-organic hydrogen peroxide solutions by direct synthesis from a non-explosive gaseous mixture containing hydrogen and oxygen. The...
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7204963 |
Process for the separation of chlorosilanes from gas streams
Chlorosilanes are continuously removed from a gas stream in an apparatus in which the gas stream is treated in a first stage with water vapor in the gas phase, and in a second stage with a liquid,...
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7195747 |
Process for mixing and reacting two or more fluids
A novel process for continuously mixing and reacting at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved using cyclone mixing where at least...
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7179440 |
Process to obtain hydrogen peroxide
In this invention, a process to obtain hydrogen peroxide solutions by means of the direct reaction of hydrogen and oxygen in the presence of a solvent and of catalysts constituted from noble or...
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7157071 |
Process for preparing hydrogen peroxide
The present invention discloses a process for the production of hydrogen peroxide from hydrazine hydrate or hydrazine salt, represented by a general formula:
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7147833 |
Method for producing hydrogen peroxide from hydrogen and oxygen
The invention relates to a method and apparatus for safely producing hydrogen peroxide by injecting dispersed minute bubbles of hydrogen and oxygen into a rapidly flowing liquid medium. The liquid...
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7144565 |
Process for direct catalytic hydrogen peroxide production
A process is disclosed for the direct catalytic production of aqueous solutions of hydrogen peroxide from hydrogen and oxygen in the presence of a small amount of one or more water soluble organic...
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7122166 |
Concentration of hydrogen peroxide
Methods for concentrating hydrogen peroxide solutions have been described. The methods utilize a polymeric membrane separating a hydrogen peroxide solution from a sweep gas or permeate. The...
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7115192 |
Apparatus and process for the synthesis of hydrogen peroxide directly from hydrogen and oxygen
A device is disclosed for the generation of hydrogen peroxide. The device produces hydrogen peroxide on an as-needed basis through the use of electrolysis of water, remixing hydrogen and oxygen in...
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7105143 |
Direct hydrogen peroxide production using staged hydrogen addition
An improved catalytic process for producing hydrogen peroxide directly by reaction of hydrogen and oxygen is disclosed. The process employs staged or sequential feeding of portions of the hydrogen...
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7105142 |
Direct synthesis of hydrogen peroxide in a multicomponent solvent system
A process is described for the production of hydrogen peroxide from hydrogen and oxygen in a reaction solvent containing a halogenated promoter and/or an acid promoter, in the presence of a...
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7101526 |
Catalyst and its use in the synthesis of hydrogen peroxide
The present invention relates to a catalyst consisting of: (a) one or more metals of the platinum group as active components; (b) one or more polyolefins; and (c) a carrier. The invention also...
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7070757 |
Method for producing catalysts consisting of metal of the platinum group by means of electroless deposition and the use thereof for the direct synthesis of hydrogen peroxide
Catalysts produced by electroless deposition of at least one platinum metal on a nonporous nonmetallic support can be used for the synthesis of hydrogen peroxide from the elements and for the...
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7067103 |
Direct hydrogen peroxide production using staged hydrogen addition
An improved catalytic process for producing hydrogen peroxide directly by reaction of hydrogen and oxygen is disclosed. The process employs staged or sequential feeding of portions of the hydrogen...
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7060244 |
Method for directly obtaining hydrogen peroxide
The invention concerns a method for making an aqueous solution of hydrogen peroxide. More particularly, it concerns a method for making hydrogen peroxide directly from hydrogen and oxygen, finely...
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7048905 |
Process for the production of hydrogen peroxide
Process for the production of concentrated aqueous solutions of hydrogen peroxide, comprising the following steps: (a) feeding to a reactor containing a catalyst based on palladium and platinum,...
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7029647 |
Process for producing hydrogen peroxide using microchannel technology
This invention relates to a process for making hydrogen peroxide in a microchannel reactor. The process comprises flowing a process feed stream and a staged addition feed stream in a process...
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7011807 |
Supported catalysts having a controlled coordination structure and methods for preparing such catalysts
Supported reactive catalysts having a controlled coordination structure and methods for their production are disclosed. The supported catalysts of the present invention are useful for the...
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7008607 |
Process for preparing hydrogen peroxide from the elements
The present invention relates to a process for the preparation of hydrogen peroxide from oxygen or oxygen-delivering substances and hydrogen or hydrogen-delivering substances in the presence of at...
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6958138 |
Supported metal catalyst, preparation and applications for directly making hydrogen peroxide
The invention concerns a supported metal catalyst based on at least one metal selected in the group M consisting of palladium, platinum, ruthenium, rhodium, iridium, holmium, osmium and gold, used...
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6939527 |
Method for the purification of hydrogen peroxide solutions
The invention relates to a novel chromatographic process for the further purification of hydrogen peroxide solutions, giving high-purity solutions which can be employed in semiconductor technology...
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6919065 |
Supported noble metal, phase-controlled catalyst and methods for making and using the catalyst
A particulate supported noble metal phase-controlled catalyst material having 5-1000 μm surface area of 50μ500 m 2 /gm is provided for use in direct catalytic production of hydrogen peroxide (H 2...
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6896867 |
Process for producing a purified aqueous hydrogen peroxide solution
A process for producing a purified aqueous hydrogen peroxide solution comprises contacting an aqueous hydrogen peroxide solution containing metal ion impurities firstly with a H + type cation...
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6884337 |
Production of basic hydrogen peroxide for chemical oxygen-iodine laser devices
A method of generating basic hydrogen peroxide (BHP) fuel for a chemical oxygen-iodine laser (COIL) using stored alkali chloride, typically potassium chloride, and water. The alkali chloride and...
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6875415 |
Resin preconditioning methods using carbon dioxide and methods for purifying hydrogen peroxide
Provided are a preconditioned resin and methods of preparation thereof as well as methods for purifying hydrogen peroxide solutions. The method includes preconditioning an anion exchange resin,...
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6872377 |
Preparation of hydrogen peroxide from hydrogen and oxygen
In a process for preparing an aqueous and/or alcoholic solution of hydrogen peroxide by reaction of hydrogen and oxygen in a trickle-bed reactor over a supported catalyst including a noble metal,...
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6822103 |
Integrated process for selective oxidation of organic compounds
Oxidized compounds are produced in a continuous integrated process in liquid phase, which comprises: Step I, synthesis of non acidic hydrogen peroxide solutions by direct reaction between hydrogen...
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6803474 |
Mn4O4-cubane type catalysts
Highly reactive, stable tetramanganese-oxo cubane complexes, their synthesis and their use as a functional catalyst for in vitro O 2 production. Preferred complexes are i) a tetramanganese-oxo...
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6780288 |
Process for the manufacture of concentrated solutions
Process for the manufacture of a concentrated solution, like a concentrated aqueous hydrogen peroxide solution, by distillation and evaporation of a dilute solution, in which the distillation and...
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6780206 |
Crystallization process for producing highly concentrated hydrogen peroxide
A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and...
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6768013 |
Intrinsically safe oxidation process
A novel process for the direct oxidation of hydrogen and hydrocarbons is disclosed, where the explosion risks inherent in gas phase oxidations are substantially eliminated. Gaseous oxidation...
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6752978 |
Method for producing hydrogen peroxide from hydrogen and oxygen
The invention relates to a method and apparatus for safely producing hydrogen peroxide by injecting dispersed minute bubbles of hydrogen and oxygen into a rapidly flowing liquid medium. The minute...
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6676919 |
Method for producing platinum metal catalysts
The invention relates to a method for producing catalysts by immersion coating a metallic support with at least one platinum metal. An aqueous medium which comprises at least one platinum metal...
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6676712 |
Process for the concentration of aqueous hydrogen peroxide by crystallization
A process for the concentration of aqueous hydrogen peroxide by discontinuous crystallization. A cooling surface is arranged in a crystallizing vessel and first wetted with hydrogen peroxide and...
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6649140 |
Process for the continuous production of hydrogen peroxide
A process is described for the continuous production of alcoholic or hydro-alcoholic solutions of hydrogen peroxide in a concentration ranging from 2 to 10% by weight and their direct use in...
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6630118 |
Process for the direct synthesis of hydrogen peroxide
A bimetallic catalyst is obtained by dispersing, in sequence and alternating, the precursors of the single metal components of the catalyst on a carrier. A process for the synthesis of hydrogen...
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6592840 |
Highly pure aqueous hydrogen peroxide solutions, method for producing same and their use
Disclosed are a highly pure aqueous hydrogen peroxide solution for use in the electronics industry and a process for the preparation of such solutions, which are essentially free from organics,...
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6576214 |
Catalytic direct production of hydrogen peroxide from hydrogen and oxygen feeds
A process for catalytically directly producing hydrogen peroxide (H 2 O 2 ) product from hydrogen and oxygen-containing feeds by contacting them with a supported noble metal phase-controlled...
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6540921 |
Process for the purification of aqueous hydrogen peroxide solutions
Process for the on-site purification of an aqueous hydrogen peroxide solution, in which the solution is made to pass through a resin bed capable, at least partially, of adsorbing or absorbing the...
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