Class / Patent application number | Description | Number of patent applications / Date published |
423582000 | Peroxide | 31 |
423584000 | Hydrogen | 31 |
20080299034 | PROCESS FOR PREPARING HYDROGEN PEROXIDE - The present invention relates to a process for preparing hydrogen peroxide by reacting hydrogen and oxygen in the presence of a solvent and of a catalyst, wherein the catalyst comprises at least one noble or semi-noble metal supported on an inorganic material functionalized with acid groups. The invention also refers to the catalyst used in this process. | 12-04-2008 |
20080305033 | Catalysts - A catalyst effective for the direct reaction of hydrogen and oxygen to form hydrogen peroxide includes particles of gold, palladium or, preferably, gold and palladium deposited upon an acid-washed support. High selectivity to and production of hydrogen peroxide is observed, with low hydrogen peroxide decomposition. The catalysts have extended lifespan. | 12-11-2008 |
20090148379 | SYSTEMS AND METHODS FOR GENERATION OF HYDROGEN PEROXIDE VAPOR - A system according to one embodiment includes a moisture trap for drying air; at least one of a first container and a second container; and a mechanism for at least one of: bubbling dried air from the moisture trap through a hydrogen peroxide solution in the first container for producing a hydrogen peroxide vapor, and passing dried air from the moisture trap into a headspace above a hydrogen peroxide solution in the second container for producing a hydrogen peroxide vapor. A method according one embodiment includes at least one of bubbling dried air through a hydrogen peroxide solution in a container for producing a first hydrogen peroxide vapor, and passing dried air from the moisture trap into a headspace above the hydrogen peroxide solution in a container for producing a second hydrogen peroxide vapor. Additional systems and methods are also presented | 06-11-2009 |
20110104044 | DIRECT SYNTHESIS OF AQUEOUS HYDROGEN PEROXIDE SOLUTION AT THE SITE OF A PAPER MILL - The invention relates to a plant for producing hydrogen peroxide by direct synthesis (i.e. hydrogen reacts with oxygen in the presence of a catalyst), which is on-site at a paper mill. The invention relates to a method for manufacturing hydrogen peroxide by direct synthesis from hydrogen originating from the recovery of the spent liquor during the manufacture of wood pulp or cellulose pulp. | 05-05-2011 |
20110200519 | FIXED BED MIXED GAS/LIQUID PHASE REACTOR AND MIXED GAS/LIQUID PHASE REACTION PROCESS USING THE SAME - The present invention provides a fixed bed reactor for carrying out a mixed gas/liquid phase reaction, wherein the reactor has a piping structure composed of microchannels, the cross-sectional area of the fixed bed is 0.0001 cm | 08-18-2011 |
20120020872 | HIGH TEMPERATURE REDUCTION OF HYDROGEN PEROXIDE CATALYST FOR IMPROVED SELECTIVITY - Method for making a direct synthesis hydrogen peroxide catalyst includes (i) mixing together a solvent, a plurality of noble metal catalyst atoms, and a plurality of organic dispersing agent molecules, the organic dispersing agent molecules each including at least one functional group capable of bonding with the noble metal catalyst atoms; (ii) reacting the organic dispersing agent with the catalyst atoms to form complexed catalyst atoms and forming a plurality of catalytic nanoparticles from the complexed catalyst atoms; (iii) supporting the catalytic nanoparticles on a support material; and (iv) reducing the catalyst atoms at a temperature of at least 351° C. to yield a supported and activated direct synthesis hydrogen peroxide catalyst. | 01-26-2012 |
20120141357 | METHOD FOR PRODUCING OF ULTRA-CLEAN AND HIGH-PURITY AQUEOUS HYDROGEN PEROXIDE SOLUTION - The present invention relates to a method for producing of ultra-clean and high-purity aqueous hydrogen peroxide solution. Industrial grade hydrogen peroxide is filtered by SBA-15 molecular sieve with which the chelator is loaded, and then it is further filtered by a hyperfiltration membrane to obtain the ultra-clean and high-purity aqueous hydrogen peroxide solution. The method provided in the present invention overcomes the problems such as complexity of operation, high energy consumption and high content of impurities in the product, and is suitable for continuous production on a large scale because of its simple equipment, simple operation, low energy consumption and stable quality of the product. | 06-07-2012 |
20120148482 | METHOD FOR PRODUCING ULTRA-PURE AQUEOUS HYDROGEN PEROXIDE SOLUTION - The present invention provides a method for continuous production of ultra-pure aqueous hydrogen peroxide solution. Industrial grade aqueous hydrogen peroxide solution as raw material is pretreated by macroporous adsorption resin, and then is brought into contact with a cation exchange resin, anion exchange resin to the first ion exchange. Then the material is brought into contact with multi-stage mixed cation and anion exchange resin columns, and is filtered by ultrafilter to obtain ultra-pure aqueous hydrogen peroxide solution. The method provided by the present invention has high security, simple operation, stable quality of product, and is suitable for continuously produce on a large scale. | 06-14-2012 |
20120148483 | MACROCYCLE MODIFIED AG NANOPARTICULATE CATALYSTS WITH VARIABLE OXYGEN REDUCTION ACTIVITY IN ALKALINE MEDIA - A composition for catalyzing oxygen reduction reactions in alkaline media, including transition-metal macrocycles and metallic nano-particles. The metallic nanoparticles have diameters ranging from about 1 nm to about 500 nm and are typically selected from the group including Ag, Ni, Co, Au, W, Mo, Mn and combinations thereof. | 06-14-2012 |
20120171111 | PROCESS FOR PRODUCTION OF OXIDATION REACTION PRODUCT OF AROMATIC COMPOUND - The present invention provides a process for producing an oxidation reaction product of an aromatic compound, having excellent environmental load reduction performance, cost reduction performance, etc. Provided is a process for producing an oxidation reaction product of a raw material aromatic compound by reacting the raw material aromatic compound with an oxidizing agent. The process further uses an electron donor-acceptor linked molecule. The process includes the step of: reacting the electron donor-acceptor linked molecule in an electron-transfer state, the oxidizing agent, and the raw material aromatic compound, thereby generating an oxidation reaction product resulting from oxidation of the raw material aromatic compound. | 07-05-2012 |
20120201743 | SELECTIVE CATALYTIC OXIDATION OF C1-C3 ALKANES - A process for preparing an oxygenate product by direct conversion of a C | 08-09-2012 |
20130004411 | POLYELECTROLYTE MULTILAYER THIN FILM CATALYST AND METHOD FOR PRODUCING SAME - Disclosed herein is a catalyst, including, in one example: a carrier, a polymer electrolyte multilayer film formed on the carrier, and metal particles dispersed in the polymer electrolyte multilayer film. The catalyst can be easily prepared, and can be used to produce hydrogen peroxide in high yield in the presence of a reaction solvent including no acid promoter. | 01-03-2013 |
20130022535 | CATALYST HAVING SURFACE-MODIFIED METAL NANOPARTICLES IMMOBILIZED IN STATIONARY PHASE IN WHICH A POLYMER ELECTROLYTE MEMBRANE IS FORMED, AND PREPARATION METHOD THEREOF - The present invention relates to a catalyst having surface-modified metal nanoparticles immobilized in a stationary phase in which a polymer electrolyte membrane is formed, and a preparation method thereof. The catalyst of the present invention may be used in a process for producing hydrogen peroxide by direct synthesis from oxygen and hydrogen. | 01-24-2013 |
20140154168 | Process to obtain hydrogen peroxide, and catalyst supports for the same process - A catalyst support comprising a material functionalized with at least one acid group and at least one halogen atom; and a supported catalyst comprising (i) a catalyst and (ii) the catalyst support comprising the functionalized material, as well as their uses in production of hydrogen peroxide. A process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of the supported catalyst comprising the functionalized material, optionally with the addition of an inert gas, in a reactor. | 06-05-2014 |
20140271446 | Catalyst for direct synthesis of hydrogen peroxide - A catalyst comprising: a platinum group metal, silver or gold, and a carrier containing niobium or tantalum oxide or niobium or tantalum phosphate, and an oxide other than niobium or tantalum oxide, as well as its use in production of hydrogen peroxide. A process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of such catalyst in a reactor, and a process for producing such catalyst. | 09-18-2014 |
20140286855 | Catalyst for direct synthesis of hydrogen peroxide comprising zirconium oxide - A catalyst comprising: a platinum group metal, silver, gold, or a mixture thereof, and a carrier containing an oxide other than zirconium oxide and a precipitate layer of zirconium oxide onto the oxide other than zirconium oxide, as well as their uses in production of hydrogen peroxide. A process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of such catalyst in a reactor, and a process for producing such catalyst. | 09-25-2014 |
20140341800 | METHOD FOR PRODUCING AQUEOUS HYDROGEN PEROXIDE SOLUTION - An object is to provide a method for producing an aqueous hydrogen peroxide solution, which can effectively remove an impurity, such as silicic acid or a silicate, contained in an aqueous hydrogen peroxide solution. The method of the present invention for producing an aqueous hydrogen peroxide solution has a first step for contacting an aqueous hydrogen peroxide solution with activated alumina which has been cleaned with purified water, and a second step for, after the first step, contacting the resultant aqueous hydrogen peroxide solution with a cation-exchange resin. The cation-exchange resin is preferably a hydrogen ion-type, strongly acid cation-exchange resin having a sulfonic acid group. The aqueous hydrogen peroxide solution being in contact with the activated alumina and the cation-exchange resin preferably has a temperature of 30° C. or lower. | 11-20-2014 |
20150147267 | METHOD OF PREPARING CATALYST HAVING Pt-Pd DISPERSED POLYMER ELECTROLYTE MULTILAYERS TREATED WITH SULFURIC ACID - Disclosed herein is a method of preparing a catalyst having Pt—Pd dispersed in polymer electrolyte multilayers, suitable for use in production of hydrogen peroxide, wherein the use of the catalyst prepared by forming polymer electrolyte multilayers on an anionic resin support and performing sulfuric acid treatment and loading (insertion or attachment) of Pt—Pd particles can result in high hydrogen conversion, hydrogen selectivity and hydrogen peroxide yield for a long period of time. | 05-28-2015 |
20150336796 | Method for the direct synthesis of hydrogen peroxide - The present invention relates to a method for the direct synthesis of hydrogen peroxide using a catalyst comprising at least one catalytically active metal selected from elements in Groups 7 to 11, wherein the catalytically active metal is supported on a carrier comprising at least one compound selected from the group consisting of sulfates and phosphates of alkaline-earth metals, wherein said compound is precipitated on the carrier. | 11-26-2015 |
423587000 | From organic reactant | 12 |
20150139892 | METHOD FOR PRODUCING HYDROGEN PEROXIDE - An object of the present invention is to provide a method by which hydrogen peroxide can be produced at a satisfactory level from an industrial and economical viewpoint without causing the load of purification to be large and without needing too large facilities for production. The present invention is directed to a method for producing hydrogen peroxide, which comprises reacting hydrogen and oxygen in a reaction medium in the presence of a noble metal catalyst and a radical scavenger. | 05-21-2015 |
20160200574 | METHOD FOR REGENERATING WORKING SOLUTION USED FOR PRODUCTION OF HYDROGEN PEROXIDE AND METHOD FOR PRODUCING HYDROGEN PEROXIDE USING REGENERATED WORKING SOLUTION | 07-14-2016 |
423588000 | By oxidizing hydroquinone or anthraquinone | 10 |
20080226541 | Recovery of Aqueous Hydrogen Peroxide in Auto-Oxidation H2O2 Production - Hydrogen peroxide produced in an auto-oxidation process is recovered from H | 09-18-2008 |
20080317662 | Molten Salts, Method of Their Production and Process for Generating Hydrogen Peroxide - A molten salt and process for preparing a molten salt or hydrogen peroxide uses ionic hydroquinones or hydroquinone derivatives as O | 12-25-2008 |
20090169469 | Process for Hydrogen Peroxide Production Including Step for Regeneration of Working Solution - Provided is a provides a method for producing hydrogen peroxide, comprising a step of reducing and then oxidizing a working solution containing an organic solvent, anthraquinone having an alkyl substituent, and tetrahydroanthraquinone having an alkyl substituent to produce hydrogen peroxide; and a working solution regeneration step of removing an inert substance, generated as a sub product by the production of hydrogen peroxide, from the working solution and re-circulating the working solution deprived of the inert substance back into the step of producing hydrogen peroxide; wherein the working solution regeneration step includes i) a first distillation step of recovering the organic solvent by distillation performed at an atmospheric or a lower pressure; and ii) a second distillation step of, following the first distillation step, recovering the anthraquinone and the tetrahydroanthraquinone by distillation performed at a still lower pressure at 200° C. or higher for a residence time of 1 hour or longer. | 07-02-2009 |
20100284901 | METHOD AND COMPOSITION FOR PREPARATION OF HYDROGEN PEROXIDE - The present invention relates to a method for the preparation of hydrogen peroxide through a continuous process, extracting hydrogen peroxide produced from reduction and oxidation of a working solution and recycling the oxidized working solution back to the reduction process, wherein the composition of the working solution, i.e. the composition of 2-alkylanthraquinone and 2-tetrahydroalkylanthraquinone, is optimized to increase the solubility of the quinones and to improve the reaction rate. The working solution comprises 2-alkylanthraquinone, 2-tetrahydroalkylanthraquinone and an organic solvent, wherein 65-95 mol % of the alkyl group of 2-alkylanthraquinone and 2-tetrahydroalkylanthraquinone is amyl and the remaining 5-35 mol % of the alkyl group is ethyl, and the molar ratio of 2-alkylanthraquinone to 2-tetrahydroalkylanthraquinone is from 4:6 to 1:9. | 11-11-2010 |
20120027667 | Method for the production of hydrogen peroxide - A process for production of hydrogen peroxide which comprises the following steps: (a) hydrogenation of a working solution comprising at least one non-ionic quinone compound selected from the group consisting of anthraquinone and its derivatives, phenanthrenequinone and its derivatives, naphthoquinone and its derivatives, and benzoquinone and its derivatives, wherein the total molecular weight of optional groups attached to the quinone skeleton is lower than 500, to obtain at least one corresponding hydroquinone compound; (b) oxidation of the at least one hydroquinone compound to obtain hydrogen peroxide; and (c) separation of the hydrogen peroxide, during and/or subsequently to the oxidation step b); wherein the working solution of either step a) and/or b) comprises less than 30% by weight of organic solvent. | 02-02-2012 |
20140234202 | Process for producing hydrogen peroxide - A process for manufacturing hydrogen peroxide by an anthraquinone autoxidation process (AO-process) comprising two alternate essential steps of: (a) hydrogenation of a working solution in a hydrogenation unit in the presence of a catalyst, wherein the working solution contains at least one alkylanthraquinone dissolved in at least one organic solvent, to obtain at least one corresponding alkylanthrahydroquinone compound; and (b) oxidation of the at least one alkylanthrahydroquinone compound to obtain hydrogen peroxide in an oxidation unit; and further comprising step (c): extracting the hydrogen peroxide formed in the oxidation step in an extraction unit, wherein the hydrogenation, oxidation and extraction steps are performed in an reactor system which is designed as a compact modular system of a hydrogenation, an oxidation and an extraction unit, and wherein the reactor system is configured to operate without a reversion (regeneration) unit for continuous reversion of the working solution as a small to medium scale AO-process with a production capacity of hydrogen peroxide of up to 20 kilo tons per year, wherein the working solution and/or the catalyst are replaced and/or treated for regeneration or reactivation only intermittently or periodically, e.g., with a low frequency. | 08-21-2014 |
20140255294 | Process for producing hydrogen peroxide - A process for manufacturing hydrogen peroxide by an anthraquinone autoxidation process (AO-process) comprising two alternate (essential) steps of: (a) hydrogenation of a working solution in a hydrogenation unit in the presence of a catalyst, wherein such working solution contains at least one alkylanthraquinone dissolved in at least one organic solvent, to obtain at least one corresponding alkylanthrahydroquinone compound; and (b) oxidation of the at least one alkylanthrahydroquinone compound to obtain hydrogen peroxide in an oxidation unit; and further comprising the step of: (c) extracting the hydrogen peroxide formed in the oxidation step in an extraction unit, wherein the units of step (a) to (c), optionally together with further ancillary units as appropriate, constitute a hydrogen peroxide production site, wherein one or more of said units are equipped with one or more sensors for monitoring one or more AO-process parameters at the hydrogen peroxide production site, said sensors being interconnected with one or more first computers at the hydrogen peroxide production site, said first computers being linked via a communication network to one or more second computers in a control room being remote from the hydrogen peroxide production site, and said control room being remotely controlling such hydrogen peroxide production site. | 09-11-2014 |
20140255295 | Process for the Manufacture of Hydrogen Peroxide - A continuous process for producing hydrogen peroxide by an anthraquinone process, comprising the steps of: (i) hydrogenating an organic working solution containing one or more anthraquinone derivatives in the presence of a heterogeneous catalyst to form a hydrogenated working solution; (ii) oxidizing the hydrogenated working solution by introducing an oxygen-containing oxidizing gas at an overpressure into an oxidation reactor, and contacting the oxidizing gas with the hydrogenated working solution to form an oxidized working solution, whereby hydrogen peroxide is formed; (iii) withdrawing an oxidation off gas from the oxidation reactor; (iv) recovering the formed hydrogen peroxide from the oxidized working solution; (v) subjecting the oxidation off gas withdrawn from said oxidation reactor, which has an excess pressure over atmospheric pressure, to a demisting treatment to obtain a demisted oxidation off gas; and (vi) feeding the demisted oxidation off gas as propellant gas into a gas ejector to produce a vacuum. | 09-11-2014 |
20160185598 | A process for manufacturing a purified aqueous hydrogen peroxide solution - The present invention relates to an improved process for manufacturing a purified aqueous hydrogen peroxide solution. The invention further relates to a plant for producing hydrogen peroxide in which the improved process for manufacturing a purified aqueous hydrogen peroxide solution according to the present invention is employed. | 06-30-2016 |
423590000 | Including dissolving reactant in alcohol containing solvent | 1 |
20080213164 | Method for producing hydrogen peroxide - The present invention provides a method for producing hydrogen peroxide, comprising the steps of: alternately reducing and oxidizing a working solution containing anthraquinone compounds as a reaction medium, wherein a mixture of alkyl-substituted anthraquinones and alkyl-substituted tetrahydroanthraquinones in a molar ratio of from 2:1 to 8:1 is used as the anthraquinone compounds in the working solution, in the reduction step all of the tetrahydroanthraquinones and some or all of the anthraquinones in the working solution are reduced; and keeping the content of alkyl-substituted anthrahydroquinones in the working solution after the reduction step and before the oxidation step higher than the content of alkyl-substituted tetrahydroanthrahydroquinones, wherein ethylanthraquinone and ethyltetrahydroanthraquinone are used as anthraquinone compounds in the working solution in a total proportion of both of from 10 to 45 mol % of all of the anthraquinone compounds in the working solution. | 09-04-2008 |