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1050
resultados
Última actualización
23/10/2026 [06:57:00]
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Resumen de: EP4825790A1
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 byproduct.
Resumen de: US20250197211A1
Chemical looping systems and methods for producing hydrogen gas are described herein that use a fluidized-bed reactor to reduce carrier particles; and a moving-bed hydrogen reactor to oxidize the reduced carrier particles and form hydrogen gas. Also possibly included as a cooler for cooling the oxidized carrier particles; and a silo for storing the oxidized carrier particles and feeding them to the fluidized-bed reactor and other components. Various configurations of these components are disclosed herein.
Resumen de: EP4570744A1
0001 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.
Resumen de: 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.
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.
Resumen de: EP4570956A1
The invention refers to an electrochemical system (1) suitable for hot idling comprising- at least one electrochemical module (11) comprising a fuel electrode section, an oxidant electrode section, and a membrane;- at least one fluid inlet line (10) leading to the electrochemical module (11), in particular to the fuel electrode section;- at least one fluid outlet line (12) exiting the electrochemical module (11);- a gas recirculation unit (15) to recirculate a gas or gas mixture exiting the electrochemical module (11) to the fuel electrode section.The system comprises an inert gas unit (3), preferably nitrogen unit, for supplying inert gas to the at least one fluid inlet line (10). The invention refers also to a method of performing electrolysis in a hot idling mode.
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.
Resumen de: EP4825794A1
The present invention relates to a catalyst-free hydrogen releasing method comprising: providing (100) a polysiloxane hydrogen carrier; contacting (200) a proton source with the polysiloxane hydrogen carrier thereby obtaining a polysiloxane mixture; pressurizing (300) the polysiloxane mixture at a pressure of higher than 1 bar; and heating (400) the polysiloxane mixture at a temperature of at least 100°C; thereby obtaining a gaseous
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.
Resumen de: WO2025205502A1
Provided are: a separator for hydrogen production, the separator containing a woven fabric support and a porous material that contains an organic polymer, wherein the calender ratio of the woven fabric support calculated by the formula below is 73% or less; an alkaline water electrolysis member, an alkaline water electrolysis cell, an alkaline water electrolysis device, and a method for producing hydrogen, each using the same; and a method for producing a separator for hydrogen production. Calender ratio = (d2/(2 × d1)) × 100% In the formula, d1 represents the fiber diameter of the woven fabric support, and d2 represents the thickness of the woven fabric support.
Resumen de: US20260316612A1
0000 A system for electric vehicle charging and hydrogen fueling leverages existing infrastructure of a localized renewable energy microgrid and utilizes excess generated energy to power an electrolyzer to produce hydrogen gas on site that is compressed and stored in a pressure vessel. A first portion of the stored hydrogen gas may be used for hydrogen fueling of a fuel cell electric vehicle (FCEV) via a hydrogen fuel dispenser that is provided at a charging station. A second portion of the stored hydrogen gas may be converted into electricity through use of one or more fuel cells. The generated electricity may be used for charging a battery of a battery electric vehicle (BEV) via an electric vehicle charging dispenser that is also provided at the charging station.
Resumen de: US20260317920A1
0000 The present disclosure relates to a porous transport layer, a water electrolysis cell including the same, and a method for manufacturing the porous transport layer. According to one aspect of the present disclosure, a porous transport layer including a porous substrate and a first coating layer disposed on one surface of the porous substrate and including platinum (Pt)-containing nanoparticles may be provided.
Resumen de: EP4534726A1
0001 The present invention relates to a tightening apparatus for selectively opening and closing respective adjacent electrolysis cells in an electrolyser. The tightening apparatus comprises: a movable member moveable in a first direction and a second direction, the first direction being a direction in which the cells are closed each other and the second direction being an opposite direction to the first direction; at least one main actuator configured to move the movable member selectively in the first and second directions; a pressure plate arranged on the first direction side with respect to the movable member; and a sub-actuator configured to move the pressure plate selectively in the first and second directions with respect to the moveable member.
Resumen de: EP4534727A1
The present invention relates to a tightening apparatus for selectively opening and closing respective adjacent electrolysis cells in an electrolyser. The tightening apparatus comprises: a movable member moveable in a first direction and a second direction, the first direction being a direction in which the cells are to be closed each other and the second direction being an opposite direction to the first direction; at least one actuator configured to move the movable member selectively in the first and second directions; a pressure plate arranged on the first direction side with respect to the movable member; and a spacer arranged between the pressure plate and the movable member.
Nº publicación: JP2026168180A 15/10/2026
Solicitante:
オハイオ・ステイト・イノベーション・ファウンデーション
Resumen de: WO2023007466A1
Systems and methods for sequestering carbon, evolving hydrogen gas, producing iron oxide as magnetite, and producing magnesium carbonate as magnesite through sequential carbonation and serpentinization/hydration reactions involving processed olivine- and/or pyroxene-rich ores, as typically found in mafic and ultramafic igneous rock. Precious or scarce metals, such nickel, cobalt, chromium, rare earth elements, and others, may be concentrated in the remaining ore to facilitate their recovery from any gangue material.
BOPI
Sede Electrónica
