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COMPONENTS FOR WATER OXIDATION ALKALINE AND ALKALINE MEMBRANE ELECTROLYZERS

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.

Hydrogen Gas Generation Using Ammonia

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.

ELECTRODE BUBBLE REMOVAL

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.

SOLID OXIDE ELECROLYZER SYSTEM INCLUDING AIR BYPASS

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.

HYDROGEN ION CONDUCTIVE MULTI-LAYER COMPOSITE MEMBRANE

Resumen de: US2025196071A1

The present invention relates to a hydrogen ion conductive multilayer composite membrane comprising one or more inner reinforced membrane comprising a porous PTFE layer impregnated with an ionomer composition and outer reinforced membranes positioned on both sides of the inner reinforced membrane, wherein the outer reinforced membranes comprise a porous PTFE layer impregnated with an ionomer composition.

INTEGRATED POWER PRODUCTION AND STORAGE SYSTEMS

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.

APPARATUS FOR PRODUCING HYDROGEN GAS FROM AMMONIA USING LASER

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.

HYDROCARBON PRODUCTION SYSTEM AND HYDROCARBON PRODUCTION METHOD

Resumen de: US2025197314A1

A hydrocarbon production system includes: an impurity removal device that removes an impurity including any one or both of oxygen and a sulfur component from a mixed gas containing the impurity and carbon dioxide; a hydrocarbon production device, which includes a hydrocarbon synthesis catalyst for promoting a reaction for synthesizing hydrocarbon from carbon dioxide and hydrogen and synthesizes the hydrocarbon from the carbon dioxide contained in the mixed gas having the impurity removed by the impurity removal device and hydrogen; and a heat supply unit that supplies reaction heat generated in the hydrocarbon production device to the impurity removal device.

METHOD FOR PRODUCING JUNCTION PHOTOCATALYST, AND JUNCTION PHOTOCATALYST

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.

JUNCTION PHOTOCATALYST

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.

APPARATUSES AND METHODS FOR PRODUCING HYDROGEN FROM SAND AND WATER

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.

METHOD OF PREPARING HYDROGEN BASED ON MICRO-DROPLETS

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.

水素発生装置

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.

CO2 FIXATION INTO CARBON NANOFIBERS USING ELECTROCHEMICAL-THERMOCHEMICAL TANDEM CATALYSIS

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).

HYDROGEN PRODUCTION SYSTEM AND HYDROGEN PRODUCTION METHOD

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.

SYSTEMS AND METHODS FOR REDUCING FUEL CONSUMED IN COMBUSTION FACILITIES AND RECOVERING GENERATED CO2

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.

HYDROGEN PRODUCTION APPARATUS FOR PRODUCING HYDROGEN FROM AMMONIA

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.

HYDROGEN PRODUCTION SYSTEM

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.

OFFSHORE ELECTROLYSIS SYSTEM, AND METHOD FOR OPERATING AN OFFSHORE ELECTROLYSIS SYSTEM

Resumen de: WO2025124791A1

The invention relates to an offshore electrolysis system (100) comprising a wind turbine (1) having a tower (19), which is anchored to the seabed, and having an electrolysis plant (5), wherein the electrolysis plant (5) is connected to the wind turbine (1) by a supply line (11), and wherein the electrolysis plant (5) has an electrolyser (13) which is arranged in a container (9), wherein the container (9) is arranged below sea level (25). The invention also relates to a method for operating a corresponding offshore electrolysis system. In this method, water is broken down into hydrogen (H2) and oxygen by an electrolyser (13) of the electrolysis plant (5), which electrolyser is located below sea level (25), wherein the hydrogen (H2) produced is transported away via a product gas line (7).

A WATER ELECTROLYZER CELL, RELATED STACK OF WATER ELECTROLYZER CELLS AND PROCESS

Resumen de: EP4570955A1

The cell (26) comprises a cell casing (34) defining an anodic compartment (36) and a cathodic compartment (38), the anodic compartment (36) comprising an anode chamber (50) and the cathodic compartment (38) comprising a cathode chamber (58), the cell casing (34) comprising a membrane (40) separating the anode chamber (50) from the cathode chamber (58).The anodic compartment (36) defines, within the cell casing (34), an anodic degassing cavity (52) located on top of the anode chamber (50), the cathodic compartment (38) defining, within the cell casing (34), an cathodic degassing cavity (60) located on top of the cathode chamber (58). The cell casing (34) comprises a partition wall (42) tightly separating the anodic degassing cavity (52) from the cathodic degassing cavity (60).

Green hydrogen generating device and method

Resumen de: KR20250088864A

그린수소 생성장치 및 방법이 개시된다. 본 발명의 일 측면에 따르면, 제철소에서 발생하는 배가스에 물입자를 분무하는 미분무장치를 구비하고, 상기 배가스에 포함되어 있는 이산화탄소를 용해하여 포집하는 이산화탄소 포집장치; 상기 이산화탄소 포집장치로부터 전달된 이산화탄소 포집수를 가열하여 이산화탄소 가스와 액체로 분리시켜 이산화탄소를 농축 저장하는 이산화탄소 분리장치; 상기 농축 저장된 이산화탄소를 나노버블로 변환시키고 해수에 용해시켜 이산화탄소 수소이온수를 생성하는 이산화탄소 나노버블 발생장치; 및 상기 이산화탄소 수소이온수를 전극반응시켜 수소를 생산하는 전극장치;를 포함하는 그린수소 생성장치가 제공될 수 있다.

METHODS FOR PRODUCING HYDROGEN

Resumen de: EP4570745A1

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.

HYDROGEN GAS GENERATION USING AMMONIA

Resumen de: EP4570949A1

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.

METHOD FOR AMMONIA RECOVERY VIA PARTIAL LIQUEFACTION FROM AN AMMONIA CRACKER USING CRYOGENIC SEPARATION

Resumen de: EP4570744A1

A method for producing hydrogen using a feed stream comprising ammonia is provided. The method can include the steps of: cracking a gaseous ammonia feed in an ammonia cracker to produce a cracked gas stream comprising hydrogen, nitrogen, and unreacted ammonia; cooling the cracked gas stream to a first temperature that is sufficient for condensing at least a portion of the unreacted ammonia to form a dual phase fluid; separating the dual phase fluid in an ammonia separator to produce a liquid ammonia stream and a top gas stream comprised predominately of hydrogen and nitrogen; removing additional ammonia from the top gas stream using a front-end purification system to form a purified top gas stream; further cooling the purified top gas stream to a second temperature that is sufficient for condensing at least a portion of the nitrogen within the top gas stream to form a dual-phase stream, wherein the second temperature is colder than the first temperature; introducing the dual-phase stream to a cryogenic hydrogen separator under conditions effective for separating hydrogen and nitrogen, thereby creating a liquid nitrogen stream and a hydrogen top gas; warming and vaporizing the liquid nitrogen stream to produce a gaseous nitrogen stream; warming the hydrogen top gas to produce a gaseous hydrogen product stream; and recycling the liquid ammonia stream produced by the ammonia separator to a point upstream the ammonia cracker.

METHOD AND APPARATUS FOR SEPARATING RESIDUAL AMMONIA AND WATER FROM CRACKED AMMONIA

Nº publicación: EP4570743A1 18/06/2025

Solicitante:

AIR LIQUIDE [FR]
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

Resumen de: EP4570743A1

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.