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Hidrógeno electrolítico

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ON-SITE ELECTRICITY GENERATION WHICH IS NOT CONNECTED TO AN ELECTRICAL GRID FROM METHANE OR METHANOL AND HAS CARBON DIOXIDE CIRCULARITY

NºPublicación:  US20260331540A1 22/10/2026
Solicitante: 
TECHNIP ENERGIES FRANCE [FR]
Technip Energies France
US_20260331540_A1

Resumen de: US20260331540A1

0000 An electricity generation plant, comprising two units and, a first unit and a second unit, which are located on two separate industrial sites having a first unit comprising a synthesis device which is capable of producing methane or methanol from hydrogen and carbon dioxide originating from a second unit, and the second unit comprising a fuel cell device which is capable of supplying an electric current from methane or methanol originating from the first unit and an anode gas stream comprising carbon dioxide, the fuel cell device being combined with a collecting device for collecting the carbon dioxide in the anode stream that is intended for the first unit.

AN ELECTROLYTIC CELL AND METHOD OF ELECTROLYSIS

NºPublicación:  US20260327816A1 22/10/2026
Solicitante: 
ROYAL MELBOURNE INST OF TECHNOLOGY [AU]
ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY
US_20260327816_A1

Resumen de: US20260327816A1

0000 The invention provides an electrolytic cell, comprising: a working electrode; a counter electrode; a liquid electrolyte in contact with a working surface of the working electrode; an acoustically transmissive substrate comprising at least a piezoelectric substrate portion; one or more conductive electrodes coupled to the piezoelectric substrate portion and configured to propagate a high frequency acoustic wave having a frequency of at least 1 MHz across the acoustically transmissive substrate when electrically actuated; and one or more power supplies configured (i) to apply a potential between the working electrode and the counter electrode sufficient to electrolytically react a species in the liquid electrolyte, thereby producing an electrolytic reaction product proximate the working electrode, and (ii) to electrically actuate the one or more conductive electrodes, wherein the working electrode is either located on the acoustically transmissive substrate or spaced apart from the acoustically transmissive substrate by the liquid electrolyte, and wherein propagation of the high frequency acoustic wave across the acoustically transmissive substrate in operation of the electrolytic cell stimulates the liquid electrolyte, thereby increasing the production efficiency of the electrolytic reaction product.

ELECTROLYSIS DEVICE

NºPublicación:  US20260327830A1 22/10/2026
Solicitante: 
MITSUBISHI HEAVY IND LTD [JP]
MITSUBISHI HEAVY INDUSTRIES, LTD.
US_20260327830_A1

Resumen de: US20260327830A1

An electrolysis device of the present disclosure includes an electrolytic cell, an electrolyte supply unit, and an ion concentration adjustment unit. The electrolytic cell includes an anode chamber, a cathode chamber, and an ion exchange membrane disposed between the anode chamber and the cathode chamber. The electrolyte supply unit includes at least one tank accommodating an electrolyte, circulates a portion of the electrolyte as a first electrolyte between the at least one tank and the anode chamber, and circulates another portion of the electrolyte as a second electrolyte between the at least one tank and the cathode chamber. The ion concentration adjustment unit supplies an adjustment solution for adjusting a hydrogen ion concentration to the electrolyte supply unit.

HYDROPHILIC MEMBER WITH CATION AND ANION CONDUCTING MEMBRANES

NºPublicación:  US20260327817A1 22/10/2026
Solicitante: 
OHMIUM INT INC [US]
Ohmium International, Inc.
US_20260327817_A1

Resumen de: US20260327817A1

0000 Described herein are membrane assemblies for use in generating hydrogen and oxygen. The membrane assemblies include a cation exchange membrane, an anion exchange membrane, and a hydrophilic layer disposed between the anion exchange membrane and the cation exchange membrane.

HYDROGEN PURIFICATION SYSTEMS

NºPublicación:  US20260326032A1 22/10/2026
Solicitante: 
CUMMINS EMISSION SOLUTIONS INC [US]
Cummins Emission Solutions Inc.
US_20260326032_A1

Resumen de: US20260326032A1

0000 A hydrogen purification system includes at least one controller configured to receive a first outlet signal and a second outlet signal and determine an outlet moisture content based on the first outlet signal and the second outlet signal. The controller is configured to receive an inlet signal and determine an inlet hydrogen mixture temperature based on the inlet signal and determine, using a conversion efficiency lookup table, a conversion efficiency of a deoxidizer based on the inlet hydrogen mixture temperature. The controller is further configured to determine a first amount of moisture stored in a dryer based on an outlet moisture content and the conversion efficiency, and after determining that the first amount of moisture is greater than or equal to a threshold, cause a heater to provide heat to the first amount of moisture.

METHOD FOR INTENSIFIED CARBON DIOXIDE CO-ELECTROLYSIS

NºPublicación:  US20260327813A1 22/10/2026
Solicitante: 
CHEVRON U S A INC [US]
Chevron U.S.A. Inc.
US_20260327813_A1

Resumen de: US20260327813A1

A method for producing syngas from an industrial CO2-containing gas stream involves directing the gas stream and an aqueous capture solution stream to a membrane contactor to facilitate CO2 transfer, producing a CO2-lean gas stream and a CO2-rich solution stream. The CO2-rich solution stream is then directed to an electrochemical cell where CO2 is reduced to CO and water is electrolyzed to produce H2 and O2, resulting in syngas (CO and H2) and a CO2-lean aqueous capture solution stream.

A NON-METALLIC ELECTRODE FRAME FOR NON-METALLIC SQUARE ATMOSPHERIC PRESSURE ALKALINE ELECTROLYZER

NºPublicación:  AU2026202462A1 22/10/2026
Solicitante: 
SHANDONG LAND KING HYDROGEN ENERGY TECHNOLOGY CO LTD
Shandong Land King Hydrogen Energy Technology Co., Ltd
AU_2026202462_A1

Resumen de: AU2026202462A1

This invention provides a non-metallic electrode frame for non-metallic square atmospheric pressure alkaline electrolyzers, belonging to the field of electrolytic cell technology. The frame comprises a main body and assembly auxiliary components. The main body contains: a cathode liquid outlet main channel, cathode liquid outlet channel, cathode liquid inlet main channel, cathode liquid inlet channel, anode liquid outlet main channel, anode liquid outlet channel, anode liquid inlet main channel, and anode liquid inlet channel. The assembly auxiliary components include a first connector, a second connector, and an adjustment rod. The second connector is welded with a movable plate adjacent to its side, which is inserted into the first connector. The adjustment rod is inserted into a through hole in the movable plate, with its outer end fitted with a locking tube. The assembly auxiliary components allow flexible adjustment of the electrode frame's assembly quantity while enhancing its load-bearing capacity. This ensures the frame remains deformed-free under atmospheric pressure, effectively addressing issues such as deformation caused by pressure or assembly stress, which may compromise sealing performance and hinder stacking assembly. ar a r a r

GAS PRESSURE BALANCE METHOD IN AN ELECTROLYSER SYSTEM AND ELECTROLYSER SYSTEM WITH A PRESSURE BALANCE VALVE SYSTEM

NºPublicación:  US20260327827A1 22/10/2026
Solicitante: 
THYSSENKRUPP NUCERA AG & CO KGAA [DE]
thyssenkrupp nucera AG & Co. KGaA
US_20260327827_A1

Resumen de: US20260327827A1

0000 In a gas pressure balance method in an electrolyser system a predefined pressure difference between pressures in an oxygen gas separation tank and a hydrogen gas separation tank is maintained by controlled release of gases through an oxygen back pressure valve and a hydrogen back pressure valve. in a first step, for each of the oxygen back pressure valves and the hydrogen back pressure valves, a predefined, calibrated pilot gas pressure is generated and in a second step, the predefined, calibrated pilot gas pressures are forwarded to the respective back pressure valves and in a third step, hydrogen and oxygen gasses are released whenever the gas pressures in the hydrogen and oxygen separation tanks exceeds the predefined, calibrated pilot pressure in the respective pilot gas streams.

RECYCLING OF CATALYST COATED MEMBRANE COMPONENTS

NºPublicación:  US20260327746A1 22/10/2026
Solicitante: 
JOHNSON MATTHEY PUBLIC LIMITED CO [GB]
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
US_20260327746_A1

Resumen de: US20260327746A1

A method of recycling a waste catalyst coated membrane, wherein the waste catalyst coated membrane comprises a membrane including a membrane ionomer, a first catalyst layer disposed on one side of the membrane, the first catalyst layer comprising a first catalyst and a first catalyst layer ionomer, and a second catalyst layer disposed on an opposite side of the membrane, the second catalyst layer comprising a second catalyst and a second catalyst layer ionomer. The method is configured to recover the first and second catalyst layer ionomers in addition to the catalyst materials and membrane ionomer.

WATER ELECTROLYSIS SYSTEM AND METHOD FOR CONTROLLING SAME

NºPublicación:  US20260327812A1 22/10/2026
Solicitante: 
HITACHI LTD [JP]
Hitachi, Ltd.
US_20260327812_A1

Resumen de: US20260327812A1

0000 A water electrolysis system includes a plurality of water electrolysis stacks connected in series to a DC power supply, a plurality of gas storage tanks (e.g., a hydrogen gas tank, a low-pressure hydrogen gas tank) for storing a gas generated in the water electrolysis stacks, a first gas pressure adjustment mechanism (e.g., a hydrogen gas tank pressure adjustment valve) for adjusting pressure of the gas generated in the entire plurality of water electrolysis stacks, a plurality of second gas pressure adjustment mechanisms (e.g., a water electrolysis stack hydrogen gas pressure adjustment valve, a water electrolysis stack low-pressure hydrogen gas pressure adjustment valve) for adjusting pressure of a gas generated in each of the water electrolysis stacks, and a control device for controlling the first gas pressure adjustment mechanism and the second gas pressure adjustment mechanism.

WATER ELECTROLYSIS SYSTEM

NºPublicación:  US20260327829A1 22/10/2026
Solicitante: 
HITACHI LTD [JP]
Hitachi, Ltd.
US_20260327829_A1

Resumen de: US20260327829A1

0000 A serially connected stack group is configured by serially connecting a plurality of water electrolysis stacks and at least one overcurrent interruption means, a series-parallel stack unit is configured by parallelly connecting at least three serially connected stack groups, and a water electrolysis stack group configured by serially connecting a plurality of the series-parallel stack units, is connected to a DC power supply.

ELECTROLYSER, AND METHOD FOR OPERATING AN ELECTROLYSER

NºPublicación:  US20260327810A1 22/10/2026
Solicitante: 
SIEMENS ENERGY GLOBAL GMBH & CO KG [DE]
Siemens Energy Global GmbH & Co. KG
US_20260327810_A1

Resumen de: US20260327810A1

0000 The invention pertains to an electrolyzer designed for water splitting into hydrogen and oxygen using electric current. It consists of multiple electrolysis cells grouped into stacks, each featuring a proton-permeable polymer membrane with electrodes on both sides. Water is supplied to the anode chamber, and generated oxygen is discharged from it, while hydrogen is discharged from the cathode chamber. A control system manages the operation of the electrolysis stacks, ensuring safe operation by maintaining a higher pressure in the anode chamber compared to the cathode chamber. The anode chamber pressure is set to be 2 to 20 times, preferably 4 to 7 times, higher than the cathode chamber pressure. This design minimizes the negative effects of membrane damage during operation. The system also allows for water circulation in both chambers and includes a recombination catalyst in the hydrogen product line to recombine hydrogen and oxygen into water.

MECHANICAL RENEWABLE GREEN ENERGY PRODUCTION

NºPublicación:  US20260328261A1 22/10/2026
Solicitante: 
PHOS GLOBAL ENERGY SOLUTIONS INC [US]
PHOS GLOBAL ENERGY SOLUTIONS, INC.
US_20260328261_A1

Resumen de: US20260328261A1

0000 A renewable energy generation system includes a drive motor, a flywheel in mechanical communication with the drive motor, a generator in mechanical communication with the flywheel, a charge controller in electrical communication with the generator, a plurality of charge controller switches in electrical communication with the charge controller, a plurality of batteries in electrical communication with a respective charge controller switch, and a power management module in electrical communication with the plurality of charge controller switches. The drive motor effectuates rotation of the flywheel to generate stored rotational energy which is transferred to the generator as a load is placed upon the generator to maintain a constant speed of the drive motor. The power management module selectively opens or closes a charge controller switch to permit or inhibit the flow of electrical energy to a respective battery to reduce the electrical load placed upon the generator and drive motor.

CONDUCTING ELECTROLYSIS IN MULTIPLE PARALLEL ELECTROLYSIS CELLS AND SYSTEM FOR SUCH

NºPublicación:  EP4826125A1 21/10/2026
Solicitante: 
AVANTIUM TECH B V [NL]
Avantium Technologies B.V.
EP_4826125_A1

Resumen de: EP4826125A1

0001 A system for conducting electrolysis for producing hydrogen from an electrolyte by conducting such in multiple parallel electrolysis cells, as well as a process for electrolysis using such system. More in particular, the system supplies multiple cells from a shared electrolyte source.

ELECTROLYSIS CELL AND ELECTROLYSIS DEVICE

NºPublicación:  EP4826134A1 21/10/2026
Solicitante: 
MITSUBISHI HEAVY IND LTD [JP]
Mitsubishi Heavy Industries, Ltd.
EP_4826134_PA

Resumen de: EP4826134A1

0001 An electrolysis cell includes: an ion exchange membrane; a current collector provided on a surface of the ion exchange membrane and made of a plurality of fiber formed into a sheet; a binder layer covering a surface of each of the plurality of fibers; and an electrode catalyst layer containing catalyst particles at least partially protruding from a surface of the binder layer. At least a part of the catalyst particles protrudes from the surface of the binder layer. For this reason, a surface area of exposed portions of the catalyst particles increases, so that a contact area with an electrolyte can be increased.

CONTROLLING OF AN ELECTROLYZING PLANT

NºPublicación:  EP4826940A1 21/10/2026
Solicitante: 
SIEMENS ENERGY GLOBAL GMBH & CO KG [DE]
Siemens Energy Global GmbH & Co. KG
EP_4826940_PA

Resumen de: EP4826940A1

0001 The invention relates to a method of controlling an electrolyzing plant (10) having plural electrolyzing cells (14) providing an electrolyzing process in response to being subjected to a DC electrolyzing power, wherein the electrolyzing plant is supplied with electric power from an electric power network (12) deploying an alternating voltage, wherein a transformer (32) has a primary winding (38) connected with the electric power network, wherein the primary winding (38) has several taps (30), and a secondary winding (40) connected with an AC side (22) of an electric converter (20), and a DC side (24) of the electric converter (20) provides the DC electrolyzing power, wherein an on-Ioad-tap-changer (28) is connected with the taps, wherein a control apparatus (36) controls the on-Ioad-tap-changer. The on-Ioad-tap-changer (28) has switching apparatuses (S1, S2, S3, S4, S5, S6) for the taps, wherein each of the switching apparatuses comprise at least one solid-state switching element.

HYDROGEN PRODUCTION SYSTEM AND HYDROGEN PRODUCTION METHOD

NºPublicación:  EP4826130A1 21/10/2026
Solicitante: 
POSCO HOLDINGS INC [KR]
POSCO Holdings Inc.
EP_4826130_PA

Resumen de: EP4826130A1

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

NºPublicación:  EP4826295A1 21/10/2026
Solicitante: 
POSCO HOLDINGS INC [KR]
POSCO Holdings Inc.
EP_4826295_PA

Resumen de: EP4826295A1

0001 The present invention relates to a system for reducing fuel consumption and recovering CO<2>, 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 CO<2> recovery facility for recovering CO<2> from an exhaust gas discharged from the combustion facility.

GREEN HYDROGEN, SYNTHESIS GAS WITH A REDUCED NITROGEN CONTENT, AND FLUE GAS FOR THE SYNTHESIS OF AMMONIA AND UREA

NºPublicación:  EP4823973A1 21/10/2026
Solicitante: 
THYSSENKRUPP UHDE GMBH [DE]
THYSSENKRUPP AG [DE]
thyssenkrupp Uhde GmbH
thyssenkrupp AG
AU_2024399298_PA

Resumen de: AU2024399298A1

The invention relates to the synthesis of urea from ammonia and carbon dioxide, wherein the hydrogen required for ammonia synthesis is obtained both by steam reforming of feed natural gas (grey hydrogen) and by electrolysis of water using electricity from renewable energy sources (green hydrogen). As the proportion of green hydrogen increases, the amount of carbon dioxide formed in the synthesis gas during steam reforming is no longer sufficient for the synthesis of urea. Therefore, flue gas, which is formed during the combustion of a fuel gas composed of fuel natural gas and combustion air and which also contains carbon dioxide, is additionally used. The oxygen formed during the electrolysis of water is introduced into the flue gas, and the modified flue gas is fed to a secondary reformer; and/or the fuel natural gas is combusted together with combustion air and the oxygen formed during electrolysis. Excess nitrogen is preferably separated from the synthesis gas before it is used for the synthesis of ammonia.

GREEN HYDROGEN, SYNTHESIS GAS, AND FLUE GAS WITH A REDUCED NITROGEN CONTENT FOR THE SYNTHESIS OF AMMONIA AND UREA

NºPublicación:  EP4823972A1 21/10/2026
Solicitante: 
THYSSENKRUPP UHDE GMBH [DE]
THYSSENKRUPP AG [DE]
thyssenkrupp Uhde GmbH
thyssenkrupp AG
WO_2025125180_PA

Resumen de: WO2025125180A1

The invention relates to the synthesis of urea from ammonia and carbon dioxide, wherein the hydrogen required for ammonia synthesis is obtained both by steam reforming of feed natural gas (grey hydrogen) and by electrolysis of water using electricity from renewable energy sources (green hydrogen). As the proportion of green hydrogen increases, the amount of carbon dioxide formed in the synthesis gas during steam reforming is no longer sufficient for the synthesis of urea. Therefore, flue gas, which is formed during the firing of the steam reformer and also contains carbon dioxide, is additionally used. After reducing the nitrogen content, the flue gas is fed into the reforming process. The carbon dioxide from the synthesis gas and the flue gas is combined, separated using conventional carbon dioxide scrubbing, and used for the synthesis of urea.

IRIDIUM-CONTAINING MANGANESE OXIDE, CATALYST, ELECTRODE, AND WATER ELECTROLYSIS METHOD

NºPublicación:  EP4825809A1 21/10/2026
Solicitante: 
TOSOH CORP [JP]
RIKEN [JP]
Tosoh Corporation
RIKEN
EP_4825809_A1

Resumen de: EP4825809A1

0001 The present disclosure provides at least one of an iridium-containing manganese oxide that exhibits high oxygen evolution electrode catalytic activity in water electrolysis, a catalyst comprising the same, an electrode comprising the catalyst or a water electrolysis method in which the electrode is used. The iridium-containing manganese oxide according to the present invention is an iridium-containing manganese oxide having a molar ratio of iridium to manganese of 0.001 or more and 0.250 or less. In one aspect, the manganese oxide is manganese dioxide having a β-type crystal structure. In one aspect, furthermore, the ratio of the lattice constant in the a-axis direction to the lattice constant in the c-axis direction is 1.420 or more and less than 1.521.

SUPPORT, METHOD FOR MANUFACTURING SUPPORT, AND CATALYST FOR AMMONIA DECOMPOSITION CONTAINING SUPPORT

NºPublicación:  EP4825487A1 21/10/2026
Solicitante: 
POSCO HOLDINGS INC [KR]
POSCO Holdings Inc.
EP_4825487_PA

Resumen de: EP4825487A1

According to exemplary embodiments of the present invention, a support is provided. The support is a support of a catalyst for ammonia decomposition, and the amount of acid sites of the support, as measured by NH3-temperature programmed desorption (NH3-TPD), is 0.006-0.010 mmol/g. Also, according to other exemplary embodiments of the present invention, provided are a method for manufacturing the support, and a catalyst for ammonia decomposition, comprising the support.

HYDROGEN PRODUCTION APPARATUS FOR PRODUCING HYDROGEN FROM AMMONIA

NºPublicación:  EP4825792A1 21/10/2026
Solicitante: 
POSCO HOLDINGS INC [KR]
POSCO Holdings Inc.
EP_4825792_PA

Resumen de: EP4825792A1

0001 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

NºPublicación:  EP4825791A1 21/10/2026
Solicitante: 
POSCO HOLDINGS INC [KR]
POSCO Holdings Inc.
EP_4825791_PA

Resumen de: EP4825791A1

0001 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.

ALKALINE ELECTROLYSER AND A METHOD FOR ITS OPERATION INCLUDING GAS PURGING

Nº publicación: EP4824327A1 21/10/2026

Solicitante:

STIESDAHL HYDROGEN AS [DK]
Stiesdahl Hydrogen A/S

WO_2025124674_PA

Resumen de: WO2025124674A1

Alkaline electrolyser and a method for its operation including gas purging An alkaline electrolyser comprising a stack (17) of electrolytic cells (1) is used for producing hydrogen gas (8). Purified hydrogen gas and purified oxygen gas is used for purging the corresponding cathode and anode compartments (5, 6) for preventing buildup of dangerous gas mixtures by gas crossover during stop, before starting, or when running production low.

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