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926
resultados
Última actualización
15/06/2025 [07:02:00]
Resultados 50 a 75 de 926
Resumen de: US2025179942A1
An apparatus includes one or more thermal storage blocks that define a radiation chamber and a fluid flow slot positioned above the radiation chamber to define a fluid pathway in a first direction. The apparatus includes a heater element positioned adjacent to the radiation chamber in a second, different direction, wherein the radiation chamber is open on at least one side to the heater element. The apparatus includes a fluid movement system configured to direct a stream of fluid through the fluid pathway in the first direction.
Resumen de: US2025179901A1
A method of producing hydrogen and sequestering carbon or sulfur includes generating a fluid including at least one of water, steam, hydrogen sulfide, carbon dioxide and heat as a byproduct of a surface facility and injecting the fluid into a subsurface formation. The subsurface formation can include a porous rock, in various forms of porosity such as intragranular, intergranular, fracture porosity. The method can further include heating the fluid to stimulate an exothermic reaction of the fluid with components of the subsurface rock formation and produce a hydrogen reaction product and one or more of sulfur minerals from the hydrogen sulfide or carbon minerals from the carbon dioxide. The fluid can be heated to between about 25° C. and about 500° C. The method can also include extracting the hydrogen produced from the reaction of the fluid with the subsurface rock formation and mineralizing sulfur or carbon in the porous rock.
Resumen de: AU2023396734A1
The present invention relates to an ammonia decomposition catalyst and a method for producing same and, more specifically, to an ammonia decomposition catalyst containing alumina (Al
Resumen de: WO2025114700A1
A process for preparing an oxygen evolution reaction (OER) catalyst comprises an oxygenated iridium component supported on a particulate solid support, which process comprising the steps of: (i) forming an aqueous mixture comprising a particulate solid support and a solution of a halide-free metal iridate; (ii) reducing the pH of the aqueous mixture to ≤ 5.0 to precipitate an oxygenated iridium component onto the particulate solid support; and (iii) isolating the product of step (ii).
Resumen de: JP2025085515A
【課題】高い効率で水素を発生させることができる鉄基粉末を提供する。【解決手段】Ｃｕ－Ｋα線を用いたＸ線回折の回折ピークの内、α－Ｆｅ結晶の（１１０）回折面に相当する回折強度曲線の半価幅が０．０３°以上０．６０°以下の範囲である水素製造用鉄基粉末。【選択図】なし
Resumen de: JP2025085516A
【課題】高い効率で水素を発生させることができる鉄基粉末を提供する。【解決手段】Ｘ線回折の回折ピークの内、α－Ｆｅ結晶の（１１０）回折面に相当する回折強度曲線から求められる格子面間隔が２．０００Å以上２．１００Å以下の範囲である水素製造用鉄基粉末。【選択図】なし
Resumen de: WO2025116600A1
Disclosed is a catalyst for a hydrogen evolution reaction or a hydrogen oxidation reaction, which can be used under alkaline conditions and has significantly improved kinetic properties compared to conventional commercially-available platinum catalysts. The present invention provides a catalyst for electrochemical hydrogen reactions under alkaline conditions, which has 2 to 20 ruthenium atoms supported in an ensemble form on the surface of a molybdenum carbide-carbon nanocomposite support, and a manufacturing method therefor, and a ruthenium-based catalyst electrode comprising the catalyst, which can be used as an electrode for anion exchange membrane-based water electrolysis cells and fuel cells.
Resumen de: WO2025116572A1
The present invention relates to an electrode for water electrolysis for hydrogen production and a manufacturing method therefor. The manufacturing method according to the present invention achieves a simpler process compared with an existing iridium (IrO2) electrode manufacturing process, uses low thermal energy, shortens the time required for, especially, heat curing, facilitates the thickness adjustment of a coating layer, and can manufacture an electrode for water electrolysis at relatively low facility costs and manufacturing costs, and requires less time, labor, and energy to perform steps of the process. In addition, the electrode for water electrolysis obtained by the manufacturing method according to the present invention not only possesses generally required electrochemical stability and chemical resistance, but also exhibits high discharge efficiency of generated bubbles while preventing defects due to voids in an actual hydrogen manufacturing process.
Resumen de: WO2025116571A1
The present disclosure relates to a manufacturing method for a separator for water electrolysis having a superhydrophobic coating layer. The manufacturing method of the present disclosure not only has high efficiency of manufacturing the separator, but also can reduce manufacturing costs and ultimately product sales costs, and thus has excellent industrial utility value. In addition, the superhydrophobic separator according to the present disclosure has high efficiency of separating hydrogen and oxygen generated in a water electrolysis process, can stably maintain hydrogen purity, and has excellent performance in preventing oxygen from being mixed into hydrogen gas, and thus can fundamentally block the risk of explosion (fire).
Resumen de: WO2025116024A1
Provided is a catalyst for hydrogen generation comprising a mixture of tungsten carbide and cobalt, the catalyst for hydrogen generation being characterized in that the absolute value of the cathode current per mg of the catalyst is 0.10 mA/mg or more when the catalyst for hydrogen generation is loaded on a glassy carbon electrode and subjected to potential scanning at -1.2 V with respect to a silver/silver chloride reference electrode under nitrogen bubbling in a 1 mol/L sodium hydroxide aqueous solution.
Resumen de: WO2025111640A1
A polymer electrolyte membrane (PEM) electrolyser or fuel cell system for the extraction of hydrogen, the electrolyser or fuel cell system comprising first and second end plate assemblies provided at longitudinal and opposed ends of the electrolyser or fuel cell system with an electrolyser stack positioned between the first and second end plate assemblies; the electrolyser stack comprising a plurality of electrolyser cells wherein each cell comprises bi-polar contact plates separated by a catalyst-coated membrane or catalyst coated electrodes and wherein the electrolyser stack is located between a pair of current collectors; wherein each of said current collectors is arranged adjacent said first and second end plate assemblies respectively with a compression arrangement being located at each end of the fuel cell stack to apply a compressive force on each of the current collectors thereby clamping the plurality of bi-polar contact plates and the plurality of catalyst-coated membranes and/or catalyst coated electrodes therebetween to apply uniform pressure across the bi-polar contact plates, wherein the compression arrangement is further configured to be adjustable to vary contact pressure between the plurality of bi-polar contact plates.
Resumen de: US2025179663A1
A production unit for the production of hydrogen or ammonia by electrolytic decomposition of water, with an electrolysis unit supplied with electrical energy by a photovoltaic unit and connected on the media side to a water storage tank and on the output side to a hydrogen tank, is intended to enable a particularly reliable and fluctuation-insensitive use of a regenerative energy source. For this purpose, the production unit is designed for floating operation and comprises a balloon envelope forming a buoyant body which can be filled with a buoyancy gas and which is provided with a support structure for the water storage unit, the electrolysis unit, the photovoltaic unit and the hydrogen storage unit.
Resumen de: US2025179654A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179660A1
A method for controlling an organic hydride generation system includes controlling potentials in an anode electrode and a cathode electrode such that a potential change in an electrode having a higher deterioration rate among the anode electrode and the cathode electrode included in an electrolytic bath is smaller than a potential change in an electrode having a lower deterioration rate.
Resumen de: US2025179010A1
Provide are a urea production method and a urea production apparatus in which hydrogen and oxygen are produced by electrolysis of water in an electrolysis unit, nitrogen is separated and recovered from air in an air separation unit, ammonia is synthesized in an ammonia synthesis unit using hydrogen from the electrolysis unit and nitrogen from the air separation unit as raw materials, carbon dioxide is produced by combusting a fuel in an oxycombustion unit while using at least the oxygen from the electrolysis unit, and urea is synthesized in a urea synthesis unit by using the carbon dioxide and the ammonia as raw materials.
Resumen de: US2025177939A1
Method for controlling an ammonia synthesis converter or a methanol synthesis converter during intermittent availability of a renewable power-dependent hydrogen feed, wherein under a limited or no availability of power the converter effluent is recycled back to the inlet of said converter in a loop, and heated to keep said converter in a hot stand-by mode wherein the temperature in the reaction space remains within a target range.
Resumen de: US2025179674A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179651A1
Disclosed is a method for operating an electrolysis plant for producing hydrogen and oxygen as product gases, wherein the oxygen product gas, which additionally contains hydrogen as a foreign gas, is fed from an electrolyser to a downstream gas separator, wherein when a predefined limit value for the hydrogen concentration in the oxygen product gas is exceeded, an inert gas (L) is fed to the gas separator such that the hydrogen concentration in the oxygen product gas is lowered. The invention further relates to a corresponding electrolysis plant.
Resumen de: WO2025114716A1
A water-electrolyser anode for a proton exchange membrane (PEM) water electrolyser comprises: a transition metal oxychalcogenide catalyst having the formula ABxOy, wherein A is a transition metal and B is a chalcogenide, and wherein 0 < x < 2 and 0 < y < 2. Also provided are a proton exchange membrane (PEM) water electrolyser, a method of water electrolysis, use of a transition metal oxychalcogenide as a catalyst in an oxygen evolution reaction under acidic conditions, and a method of manufacturing an anode for an electrolyser.
Resumen de: WO2025114571A1
An electrolysis device configured to produce hydrogen gas from water, the electrolysis device comprising a container (4), the container accommodating an aqueous alkaline solution (5), a cathodic electrode (1), and an anodic electrode (2), an electrical current being selectively applied between the cathodic electrode and the anodic electrode, wherein the cathodic electrode and possibly the anodic electrode, is made of a nickel alloy, with a nickel base alloyed with at least one element chosen among chromium, molybdenum, cobalt and iron, wherein the cathodic electrode and the anodic electrode are manufactured by an additive manufacturing process, from respective first and second mixed metallic powder compounds, wherein the cathodic and anodic electrodes exhibit an outer surface comprising a plurality of first surface patterns (6,7).
Resumen de: US2025179658A1
In a method of producing metal borohydride, M(BH4)n, from metal metaborate, M(BO2)n, in which M is a metal, such as a metallic metal, an alkali metal, an alkaline earth metal, a transition metal or a chemical compound behaving as a metal, and n is a valence value of the metal, metal borohydride is formed through a reaction of metal hydride, MHn, with trimethyl borate, B(OMe)3, and metal trimethyl borate is formed through a reaction of boric acid, H3BO3, with methanol, MeOH, under removal of water, H2O. An electrochemical cell is used for the conversion of metal metaborate and water, H2O, to boric acid, in the electrochemical cell. The electrochemical cell has an anodic half-cell and a cathodic half-cell separated by a cation exchange membrane, and a solvent and water is provided to both the anodic half-cell and the cathodic half-cell. Metal metaborate is provided to the anodic half-cell, where acid ions, H+, and electrons, e−, are generated at the anode from electrolysis of water, and H reacts with metal metaborate and water. The cation exchange membrane passes metal ions, Mn+, from the anodic half-cell to the cathodic half-cell, and metal hydroxide, M(OH)n, is formed in the cathodic half-cell.
Resumen de: WO2025114702A1
There is provided a an apparatus for the photolysis of a target material. The apparatus comprises a chamber arranged to receive a target material, at least one emitter arranged to emit an electromagnetic radiation signal at or towards the target material in use, an electromagnetic field generator configured to generate an electromagnetic field within the chamber in use, and a controller. The controller is configured to control the electromagnetic field generator to generate an electromagnetic field in the presence of the target material, such that the electromagnetic radiation signal emitted by the at least one emitter is incident upon the target material in the presence of the generated electromagnetic field.
Resumen de: WO2025113866A1
The invention relates to a process (100) for the production of hydrogen from ammonia comprising the following steps: - providing a water feed stream to a water electrolyzer (101); - performing a water electrolysis (102) of the water feed stream in the electrolyzer, producing an oxygen product stream and an electrolysis hydrogen stream; - providing an ammonia feed stream to an ammonia cracking reactor (103); - providing an oxidant stream (105) and performing a combustion reaction (106) with said oxidant stream, thereby generating heat; - in the ammonia cracking reactor, performing an endothermic reaction of ammonia cracking (104) of the ammonia feed stream with said generated heat; characterized in that the oxidant stream comprises at least a portion of the oxygen product stream produced by the water electrolysis of the water feed stream.
Resumen de: CN119698495A
A process for the production of hydrogen comprising the steps of: a) providing a starting mixture comprising bromine, water and a sulfur-containing compound, b) reacting the starting mixture provided in step a) to produce a reaction mixture effluent comprising sulfuric acid and hydrogen bromide, c) separating the reaction mixture effluent obtained in step b) into one or more hydrogen bromide-enriched compositions and one or more sulfuric acid-enriched compositions, where at least one hydrogen bromide-enriched composition contains up to 1,000 ppm sulfuric acid, where step c) comprises at least two distillation steps, d) separating the reaction mixture effluent obtained in step c) containing up to 1,000 ppm sulfuric acid, at least a portion of the at least one hydrogen bromide-enriched composition comprising at least one hydrogen bromide-enriched composition comprising at least 50,000 ppm sulfuric acid and at least 50,000 ppm sulfuric acid is subjected to electrolysis to obtain hydrogen and a bromine-containing composition wherein the electrolysis cell is operated at an operating temperature of at least 70 DEG C, and e) recycling at least a portion of the bromine-containing composition obtained in step d) back to step a).
Nº publicación: EP4562223A2 04/06/2025
Solicitante:
TOTALENERGIES ONETECH [FR]
SULZER MANAGEMENT AG [CH]
TotalEnergies OneTech,
Sulzer Management AG
Resumen de: CN119604644A
A process for producing hydrogen and/or bromine by electrolyzing hydrogen bromide in the electrolysis of hydrogen bromide using a fluoropolymer membrane having a glass transition temperature Tg > = 110 DEG C, wherein the hydrogen bromide is derived from the bromination of hydrocarbons.
BOPI
Sede Electrónica
