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977
resultados
Última actualización
06/07/2025 [07:03:00]
Resultados 100 a 125 de 977
Resumen de: WO2025125277A1
The invention relates to an electrolysis system comprising an electrolysis stack (1) having multiple electrolytic cells (101) which each comprise a cathode chamber (102) and an anode chamber (103) and are designed to electrolytically split water in the anode chamber (103) into hydrogen and oxygen. The hydrogen generated in the cathode chamber (102) is fed to a first gas-liquid separator (9) through a cathode outlet (2) of the electrolysis stack (1) and via a medium line (7) connected thereto. A second gas-liquid separator (15) can be connected to the cathode outlet (2). Depending on the pressure in the electrolysis stack (1), the cathode outlet is connected to the first gas-liquid separator (9) or to the second gas-liquid separator (15).
Resumen de: WO2025128535A1
A method for producing hydrogen using a feed stream comprising ammonia is provided. The method may include the steps of: cracking a gaseous ammonia feed comprising ammonia and at least 0.15% water vapor in an ammonia cracker to produce a cracked gas stream comprising hydrogen, nitrogen, unreacted ammonia, and water vapor; cooling the cracked gas stream to a separation temperature that is sufficient for condensing at least a portion of the unreacted ammonia and the water vapor to form a dual phase fluid; separating the dual phase fluid in a separator that is configured to produce an aqueous ammonia stream and a vapor stream, the vapor stream comprising predominantly of hydrogen and nitrogen; wherein the separation temperature is below 0°C.
Resumen de: WO2025127924A1
The present invention relates to an electrolyzer designed for the generation of hydrogen and oxygen through water electrolysis. The electrolyzer comprises a housing structure accommodating at least one electrolytic cell, which includes an anode, a cathode, and an ion-conducting membrane. A water inlet is provided to introduce water into the electrolytic cell, and an electrical power source is operatively connected to the anode and cathode to facilitate the electrolysis process. The electrolyzer also includes separate outlets for the efficient extraction of hydrogen and oxygen generated during electrolysis. A multi-parameter optical measurement system is integrated within the electrolyzer. This system features at least one optical fiber with multiple sensing points distributed along its length, each capable of detecting various operational parameters within the electrolyzer.
Resumen de: WO2025125243A1
The invention relates to a method for producing an electrode (10) for use in alkaline electrolysis of water, the method comprising: providing a metal substrate (12); providing a coating material (26) comprising powder (28) consisting of a catalyst material (20), and comprising non-metal particles (24); and coating at least a portion of the substrate with the coating material. The invention also relates to electrodes produced in this way.
Resumen de: WO2025125633A1
The present disclosure relates to apparatuses for producing hydrogen, and to top-down methods for producing nanoparticles. Different mechanical mills may be used to break down micron sized soil or sand particles and to react the particles with water, particularly sea water.
Resumen de: WO2025125439A1
A methanol plant and process for producing methanol are provided. A first SOE section is arranged to receive a carbon dioxide-rich feed and electrolyse it to a carbon monoxide-rich stream. A methanol loop is arranged to receive at least a portion of the carbon monoxide-rich stream and a hydrogen-rich stream and convert them to a crude methanol stream. A first H2O-rich stream is converted to a first steam stream by means of heat from the electrolysis process in the first SOE section. The first steam stream is used it as heat for the distillation of the crude methanol stream in the methanol distillation section.
Resumen de: US2025198026A1
Disclosed herein are aspects of a composition comprising one or more metal-oxide nanoparticles and porous catalyst layers, comprising an electrically conductive core a surface layer comprising one or more surface active catalysts; and wherein the one or more metal-oxide nanoparticles are electrocatalytic toward oxygen gas evolution in alkaline conditions, alkaline-ionomer conditions, or a combination thereof. Aspects of a method of making such compositions for water oxidation alkaline and alkaline membrane electrolyzers are also disclosed herein. Also disclosed herein is an alkaline-exchange-membrane ionomer-based, hybrid liquid-alkaline, alkaline-ionomer electrolyzer comprising an anode, wherein the anode comprises (i) an ionomer and (ii) the composition disclosed herein and a liquid alkaline electrolyzer comprising an anode, wherein the anode comprises one or more catalysts having the composition disclosed herein, wherein the composition is produced as a powder or as a continuous electrode architecture on metal porous transport layers.
Resumen de: US2025198020A1
A hydrogen gas generation system comprises a reactor chamber, an elongate cathode, an ammonia inlet, a hydrogen gas outlet, and a collection outlet. The reactor chamber has an input end and an output end. A wall of the reactor chamber between the input end and the output end is an anode. The elongate cathode extends between the input end and the output end through an interior of the reactor chamber. The ammonia inlet is positioned to introduce a liquid ammonia into the reactor chamber such that the liquid ammonia flows in a direction from the input end to the output end. The hydrogen gas outlet at the output end, wherein a hydrogen gas generated in the reactor chamber exits the reactor chamber through the hydrogen gas outlet. The collection outlet is at the output end. Nitrogenous compounds exit the reactor chamber through the collection outlet.
Resumen de: US2025198023A1
An electrolyzer for gaseous production such as hydrogen gas includes an oscillating electrode driven at a natural frequency of the gaseous bubbles improves output by readily removing the gaseous bubble product from the electrode surface, thereby exposing greater electrode surface area for subsequent electrolysis reactions. A natural frequency of the gaseous product determines an oscillation frequency with which to drive the electrode accumulating the gaseous product, such as hydrogen bubbles, to agitate and release the bubbles which then rise to the surface of the liquid filled containment. Integrating oscillation logic for agitating the otherwise stationary electrode or cathode in a PEM water electrolyzer improves hydrogen production by readily evacuating the generated hydrogen to free up the electrode area for additional electrolysis reactions.
Resumen de: US2025198014A1
An electrolyzer system includes a splitter configured to split a first air inlet stream into a bypass air stream and a second air inlet stream, a stack of electrolyzer cells configured receive steam and the second air inlet stream and output a product stream containing hydrogen and an oxygen exhaust stream, such that the bypass air stream is configured to bypass the stack, and a product cooler heat exchanger configured to cool the product stream using the first air inlet stream.
Resumen de: US2025202278A1
A power plant is configured to output power to a grid power system and comprises a hydrogen generation system configured to produce hydrogen, a gas turbine combined cycle power plant comprising a gas turbine engine configured to combust hydrogen from the hydrogen generation system to generate a gas stream that can be used to rotate a turbine shaft and a heat recovery steam generator (HRSG) configured to generate steam with the gas stream of the gas turbine engine to rotate a steam turbine, a storage system configured to store hydrogen produced by the hydrogen generation system, and a controller configured to operate the hydrogen generation system with electricity from the grid power system when the grid power system has excess energy and balance active and reactive loads on the grid power system using at least one of the hydrogen generation system and the gas turbine combined cycle power plant.
Resumen de: US2025197205A1
Disclosed is an apparatus for producing hydrogen gas from ammonia gas using a laser. A decomposition device for decomposing ammonia gas in order to produce hydrogen gas includes an ammonia inlet provided at an uppermost end of the decomposition device to allow ammonia gas to easily flow into the decomposition device, a hydrogen outlet configured to discharge the hydrogen gas produced by decomposition of the ammonia gas, and a nitrogen outlet configured to discharge nitrogen gas produced by the decomposition of the ammonia gas. Laser light in a preset first wavelength band is incident from an outside to a contact point of the ammonia inlet, the hydrogen outlet, and the nitrogen outlet, so that the ammonia gas is decomposed.
Resumen de: US2025196120A1
The present invention provides a method for producing a heterojunction photocatalyst having higher catalytic activity than that of conventional heterojunction photocatalysts, and a heterojunction photocatalyst. A method for producing a heterojunction photocatalyst having a solid state mediator between a hydrogen-evolution photocatalyst and an oxygen-evolution photocatalyst, which includes the following step 1: step 1: a step of joining the solid state mediator onto the oxygen-evolution photocatalyst by at least one method selected from the group consisting of a photoelectrodeposition method, an impregnation supporting method, and a precipitation method, in each of which an organic carboxylic acid compound and a solid state mediator or a precursor of the solid state mediator are used.
Resumen de: US2025196119A1
The present invention provides a heterojunction photocatalyst having higher catalytic activity than that of conventional junction photocatalysts. The heterojunction photocatalyst of the present invention is a heterojunction photocatalyst having a solid state mediator between a hydrogen-evolution photocatalyst and an oxygen-evolution photocatalyst, in which the solid state mediator and the hydrogen-evolution photocatalyst are joined to each other via an ionic polymer.
Resumen de: US2025197207A1
A method may provide a mechanical mill for reducing a size of particles; wherein the mechanical mill includes: a core for accelerating particles, the core including: a first disc and a second disc facing the first disc in an axial direction, wherein each of the first disc and the second disc includes a plurality of concentric rings and a plurality of concentric channels alternately interleaved with the plurality of concentric rings; and wherein the first disc, the second disc, or a combination thereof are rotated. A method may introduce water into the mechanical mill. A method may introduce soil particles into the mechanical mill. A method may activate the mechanical mill to accelerate the water and the soil particles. A method may thereby produce nanoparticles from the soil particles and producing hydrogen from a reaction between the nanoparticles and the water.
Resumen de: US2025198012A1
The invention pertains to an electrolyser for producing hydrogen (H2) and oxygen (O2) as product gases. It includes an electrolysis module and a gas separator for phase separation of the product gas from water. The electrolysis module is connected to the gas separator via a product flow line, and a return line with a circulation pump connects the gas separator back to the electrolysis module for separated water. A bypass line with a valve allows water to be supplied from the gas separator to the electrolysis module during standstill. The invention also covers a method for operating the electrolyser, where in standstill mode, the electrolysis current is stopped, and a safety deactivation is initiated. Water is automatically driven into the electrolysis module due to a hydrostatic differential pressure (Δp) from a predefined height difference (Δh), flooding the electrolysis module.
Resumen de: US2025198013A1
A method of preparing hydrogen based on micro-droplets includes: S1, mixing water and a regulator to obtain an aqueous solution, where the regulator is one or more of: a metal conductor, a nanomaterial, a conductive polymer, and an inorganic salt having a redox property; S2, inputting the aqueous solution to a micro-droplet generation device to generate the micro-droplets, where each of the micro-droplets has a size of less than or equal to 10 μm, and hydrogen radicals are spontaneously generated at a gas-liquid interface of each of the micro-droplets; S3, the hydrogen radicals being compounded with each other to generate the hydrogen; and S4, collecting the hydrogen or the hydrogen radicals.
Resumen de: US2025186304A1
A hydrogen generation device includes a tubular tank and a top lid combined with the tank. An immersion tube in which a hydrogen generating agent package is stuffed is placed in the tank. The hydrogen generating agent package is submerged in water after water is poured in the tank to generate hydrogen, which is released through a tank opening of the tank. The hydrogen generating agent package accommodates hydrogen generating agent powders including calcium oxide and aluminum powders, both of which are mixed and wrapped with a nonwoven fabric, as well as a little catalytic sodium carbonate added inside. For inhibition of free radicals and promotion of metabolism, the hydrogen generation device is further provided with a connector and a hose for a skin-care instrument, a nasal mask, an eye shield or an ear cleaner through which hydrogen is supplied as required.
Resumen de: WO2025129081A1
A method, comprising electrolyzing a CO2 input and water so as to form a first product comprising CO and H2, the electrolyzing optionally being performed over a Pd/C catalyst or a catalyst that comprises any one or more of gold, silver, iron, cobalt, nickel, copper, or zinc; and thermochemically processing the first product so as to give rise to a second product that comprises carbon nanofibers or nanotubes. A system, comprising: a first reaction zone, the first reaction zone configured to receive CO2 input and water, and the first reaction zone configured for electrolysis of the CO2 input and water to evolve a product that comprises CO; a second reaction zone, the second reaction zone configured to receive a product from the first reaction zone, the second reaction zone configured to support at least one of the Boudouard reaction (R1) and CO + H2 → C(s) + H2O (R2).
Resumen de: WO2025127896A1
According to exemplary embodiments of the present invention, a hydrogen production system is provided. The hydrogen production system comprises: a dry quenching facility configured to cool coke using a cooling gas; a boiler configured to receive the cooling gas from the dry quenching facility and recover heat energy of the cooling gas to produce first steam and electric power; and a water electrolysis facility configured to receive the electric power from the boiler and electrolyze second steam to produce hydrogen. According to other exemplary embodiments of the present invention, a method for producing hydrogen is provided.
Resumen de: WO2025127894A1
The present invention relates to a system for reducing fuel consumption and recovering CO2, comprising: a water electrolysis facility system for producing hydrogen and oxygen from water or steam; a combustion facility for combusting fuel by using the produced oxygen; and a CO2 recovery facility for recovering CO2 from an exhaust gas discharged from the combustion facility.
Resumen de: WO2025127755A1
A hydrogen production apparatus of the present invention comprises: an ammonia decomposition reactor for decomposing ammonia to discharge a mixed gas including hydrogen, nitrogen, and unreacted ammonia; an ammonia remover for receiving the mixed gas, adsorbing and removing the unreacted ammonia included in the mixed gas, and discharging a first product gas including hydrogen and nitrogen and a first tail gas; and a nitrogen remover for receiving the first product gas, removing nitrogen included in the first product gas, and discharging a second product gas including hydrogen and a second tail gas, wherein the second product gas discharged from the nitrogen remover is resupplied to the nitrogen remover as a purge gas and a pressurizing gas. According to the hydrogen production apparatus of the present invention, high-purity hydrogen can be continuously produced in large quantities.
Resumen de: WO2025127526A1
According to exemplary embodiments of the present invention, a hydrogen production system is provided. The present invention comprises: a hydrogen generation unit configured to receive reduced iron from a reduced iron generation unit configured to generate reduced iron by reducing powdered iron ore in a reducing gas atmosphere, and to generate hydrogen from ammonia by bringing the reduced iron into contact with the ammonia; and a regeneration unit configured to receive the reduced iron from the hydrogen generation unit and to regenerate the reduced iron by reducing the reduced iron in a hydrogen gas atmosphere. According to other exemplary embodiments of the present invention, a method for producing hydrogen is provided.
Resumen de: WO2025127476A1
Provided is a membrane-electrode assembly for a water electrolysis cell, comprising: a polymer electrolyte membrane having an active area and an inactive area surrounding the active area; a hydrogen generation electrode positioned on a first surface of the active area of the polymer electrolyte membrane; an oxygen generation electrode positioned on a second surface of the active area of the polymer electrolyte membrane; a first sub-gasket which is disposed on a first surface of the inactive area of the polymer electrolyte membrane and which surrounds a first electrode; and a second sub-gasket which is disposed on a second surface of the inactive area of the polymer electrolyte membrane and which surrounds a second electrode, wherein the first sub-gasket has a first window that accommodates the hydrogen generation electrode, and a first water supply path that surrounds the first window and exposes the inactive area of the polymer electrolyte membrane.
Nº publicación: WO2025127502A1 19/06/2025
Solicitante:
POSCO HOLDINGS INC [KR]
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Resumen de: WO2025127502A1
Provided according to exemplary embodiments of the present invention is an ammonia decomposition system capable of minimizing the generation of iron nitride, which is a by-product.
BOPI
Sede Electrónica
