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881
results.
Updated on
19/06/2025 [07:12:00]
Absstract of: 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.
Absstract of: 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.
Absstract of: GB2636333A
A system comprising two electrolysis subsystems for electrolysis of water to produce hydrogen, wherein the first subsystem produces waste thermal energy and the second uses this energy. One of the subsystems may use a low-temperature electrolysis technology and the other a high-temperature technology. Said low-temperature process may be anionic exchange membrane (AEM) electrolysis, alkaline electrolysis or a combination. The high-temperature process may be solid oxide electrolysis cell (SOEC) electrolysis. The waste thermal energy may be recovered into a heat exchange fluid and the system may also comprise a heater or a steam generator. Also claimed is a method for the system.
Absstract of: 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.
Absstract of: EP4571906A1
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.
Absstract of: EP4570742A1
A method for producing hydrogen comprises a) performing water electrolysis to produce oxygen and a first hydrogen product stream; b) reforming a hydrocarbon stream with oxygen to produce a reformed stream containing CO<sub>x</sub> and hydrogen; c) optionally, subjecting said reformed stream to a water gas shift process to produce a shifted product stream containing additional hydrogen and carbon dioxide; and separating hydrogen from the shifted product stream to produce a second hydrogen product stream; and d) directing oxygen produced in step a), optionally after buffering, to step b). The method allows for producing constant, continuous and uninterrupted amounts of emission-free hydrogen accomodating external influences such as fluctuations with weather conditions, day-night cycles and seasons. Said process can be run continuously and is not reliant on only one energy source which might be fluctuating.
Absstract of: EP4570950A1
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.
Absstract of: WO2024184065A1
An offshore hydrogen production platform (100) is described comprising a support structure (101) and plurality of vertically spaced decks (110, 111, 112) arranged to be supported by the support structure (101). The plurality of vertically spaced decks (110,111, 112) comprise an uppermost deck (110), and wherein the uppermost deck (110) comprises a hydrogen production equipment (130). The offshore hydrogen production platform (100) further comprises an enclosure (113) arranged to encapsulate the hydrogen production equipment (130). Also described is a method of producing hydrogen using hydrogen production equipment (130) located on a uppermost deck (110) of an offshore hydrogen platform (100).
Absstract of: CN119677896A
In one embodiment, discussed herein is a method of producing hydrogen, the method comprising: (a) providing an electrochemical reactor having an anode, a cathode, and a membrane between the anode and the cathode, where the membrane is both electronically and ionically conductive; (b) introducing a first stream to the anode, wherein the first stream comprises ammonia; (c) introducing an oxidizing agent to the anode; and (d) introducing a second stream to the cathode, wherein the second stream comprises water and provides a reducing environment to the cathode; wherein the hydrogen is generated from water in an electrochemical manner; wherein the first stream and the second stream are separated by the membrane; and wherein the oxidant and the second stream are separated by the membrane.
Absstract of: EP4570958A2
A method of operating an electrolyzer module includes providing a first air stream and steam into a stack of electrolyzer cells located in a hotbox and outputting a product stream containing hydrogen and steam, and an oxygen exhaust stream, providing the product stream to an internal product cooler (IPC) heat exchanger located in the hotbox to reduce the temperature of the product stream by transferring heat to the first air stream, and providing the product stream from the IPC to an external product cooler (EPC) heat exchanger located outside of the hotbox and inside of a cabinet housing the hotbox to further reduce the temperature of the product stream by transferring heat to a fluid stream.
Absstract of: EP4570957A2
A method operating an electrolyzer system includes producing hydrogen by electrolysis of steam in at least one electrolyzer cell stack of the electrolyzer system using power received from an intermittent power source, detecting a reduction in a level of power received from the intermittent power source below a first threshold, decreasing a rate of producing hydrogen in response to the detected reduction in the level power below the first threshold, detecting a reduction in a level of power received from the intermittent power source below a second first threshold that is lower than the first threshold, and switching the electrolyzer system into a hot standby mode in which the electrolyzer system does not produce hydrogen and maintains the least one electrolyzer cell stack above a predetermined threshold temperature.
Absstract of: 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).
Absstract of: EP4570954A1
The invention relates to a coated diaphragm (16) of an electrochemical device (8) for alkaline electrolysis. The diaphragm (16) comprises an alkaline membrane (18) coated on at least one side with a catalyst layer (20). The catalyst layer (20) is obtained by deposition of at least one metallic catalyst on the membrane (18) by physical vapor deposition, the metallic catalyst being chosen between Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Hf, Ta, W and any combination thereof.
Absstract of: 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.
Absstract of: WO2024094454A2
A separator for alkaline hydrolysis comprising a porous layer, the porous layer comprising inorganic particles, characterized in that the inorganic particles have a fraction of primary particles having a diameter above 100 nm of lower than 3 % by number, as measured by Transmission Electron Microscopy (TEM).
Absstract of: WO2024094453A2
A separator for alkaline hydrolysis comprising a porous layer, the porous layer comprising zirconium oxide particles, characterized in that the zirconium oxide particles have a particle size of 70 nm or less, measured using the Debye-Scherrer equation on the (-111) reflection of a powder X-ray diffraction pattern of the zirconium oxide particles.
Absstract of: US2025187912A1
A catalyst includes a ruthenium metal loaded on a support, wherein the support has a chemical formula of AxB(1-x)Oy. A is an alkaline earth metal, B is aluminum, zinc, cerium, manganese, or a combination thereof, x is 0.05 to 0.50, and y is chemical stoichiometry. The catalyst may further include an auxiliary agent loaded on the support. The catalyst can be used to decompose gaseous ammonia.
Absstract of: US2025188621A1
Device for generating hydrogen gas and oxygen gas from water, comprising a case, which forms a hydrolysis chamber designed to contain an amount of water; electrode means that act as a cathode and an anode; and gas-separating means, disposed in the hydrolysis chamber between the cathode and the anode, which comprise a permeable membrane segment suitable for preventing the generated hydrogen gas and oxygen gas from passing through the permeable membrane segment and mixing together, the hydrolysis chamber being divided into a first portion that contains the cathode and a second portion that contains the anode, wherein the first and second chamber portions are in fluid communication with respective pipes for hydrogen gas and oxygen gas. Another object of the invention is a system for the same purpose, comprising at least one device as described above.
Absstract of: US2025188620A1
A new energy hydrogen production system and a control method therefor. In the new energy hydrogen production system, a new energy input module supplies power to electrolytic cells by means of a power conversion module; and a control system of the new energy hydrogen production system is used for controlling, according to the power of the new energy input module, the power conversion module to work, such that among N electrolytic cells in an operation state, at least N-1 electrolytic cells work in a preset load range. The preset load range is a corresponding load range having the highest system efficiency in an electrolytic cell working range division result prestored in the control system.
Absstract of: US2025188628A1
An electrolysis cell for chlor-alkali or alkaline water electrolysis comprises two cell elements each defining an electrode chamber by providing a back wall and sidewalls of the electrode chambers, an electrode accommodated in each of the electrode chambers, and a sheet-like separator extending in a height direction and a width direction of the electrolysis cell, the separator being interposed in a joint between the two cell elements and providing a separating wall between the electrode chambers, wherein at least one of the electrodes is made from a sheet of metallic mesh, which is supported by a plurality of webs attached to the back wall of the respective electrode chamber, the webs extending in the height direction of the electrolysis cell, and wherein a plurality of ribs extending in the width direction of the electrolysis cell is carried by the webs, wherein the electrode is disposed on the plurality of ribs.
Absstract of: US2025188630A1
An oxynitride catalyst includes NiaMbNcOd, wherein M is Nb, Mn, or Co, a>0, b>0, c>0, d>0, and a+b+c+d=1. A hydrogen evolution device includes an anode and a cathode dipped in an electrolyte, and the anode includes the oxynitride catalyst. The oxynitride catalyst can be disposed on a support. The oxynitride catalyst may have a polyhedral structure.
Absstract of: US2025188633A1
The present invention relates to the generation of at least one electrolysis product, in particular to a hydropower-electrolysis system, a hydro power plant and a method for generating at least one electrolysis product. An electrolysis assembly includes a plurality of electrolysis cells configured to generate, upon provision of a direct electrical current, at least one electrolysis product from a supply medium. A hydropower assembly is electrically connected to the electrolysis assembly for operating the electrolysis cells of the electrolysis assembly based on electrical power generated by the hydropower assembly.
Absstract of: US2025188632A1
An electrolytic method of loading hydrogen into a cathode includes placing the cathode and an anode in an electrochemical reaction vessel filled with a solvent, mixing a DC component and an AC component to produce an electrolytic current, and applying an electrolytic current to the cathode. The DC component includes cycling between: a first voltage applied to the cathode for a first period of time, a second voltage applied to the cathode for a second period of time, wherein the second voltage is higher than the first voltage, and wherein the second period of time is shorter than the first period of time. The peak sum of the voltages supplied by the DC component and AC component is higher than the dissociation voltage of the solvent. The AC component is selected based on a local minimum of a Nyquist plot to minimize energy loss while maintaining hydrogen transport.
Absstract of: US2025188631A1
An embodiment water electrolysis catalyst includes iridium oxide including a rutile phase and iridium-nickel oxide including a hexagonal phase. An embodiment method of preparing a water electrolysis catalyst includes preparing a mixture including an iridium precursor, a nickel precursor, and cysteamine hydrochloride, drying the mixture, grinding the dried mixture, and firing a ground product, wherein the water electrolysis catalyst includes iridium oxide including a rutile phase and iridium-nickel oxide including a hexagonal phase.
Nº publicación: US2025188629A1 12/06/2025
Applicant:
IHI CORP [JP]
IHI Corporation
Absstract of: US2025188629A1
A power control device for a hydrogen production system according to one aspect includes: a power generation device that generates electric power by using renewable energy; a hydrogen production device that produces hydrogen by using electric power generated by the power generation device; and a connector that connects the power generation device and the hydrogen production device to an electric power system. The power control device determines a power command value to be supplied to the hydrogen production device based on electric power generated by the power generation device and electric power that reversely flows to the electric power system so that hydrogen is produced in a state where a reverse power flow to the electric power system continuously occurs.
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