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764
resultados
Última actualización
26/09/2025 [06:58:00]
Resumen de: US2025297385A1
A surface modification method of a nickel-based catalytic material for water electrolysis, and a catalytic material for water electrolysis are provided. The method includes: immersing a nickel-based substrate material to be modified in a first solution including a transition metal cation to allow a first modification treatment, such that a layered double hydroxide (LDH) is produced on a surface of the nickel-based substrate material; conducting a plasma etching treatment for the LDH produced on the surface of the nickel-based substrate material after the first modification treatment to produce a cation/anion double vacancy-containing LDH; and immersing the cation/anion double vacancy-containing LDH produced after the plasma etching treatment in a second solution including a high-valent metal cation to allow a second modification treatment, such that a high-valent metal single atom-containing LDH is produced. The method has advantages such as simple process, low cost, and high stability.
Resumen de: US2025297602A1
In order to provide a device for providing hydrogen by means of an electrolysis unit which allows the longest possible service life of the electrolysis unit even in case of fluctuating energy supplies to the electrolysis unit, a reciprocating piston compressor is provided to compress the hydrogen generated by the electrolysis unit, the reciprocating piston compressor having at least one automatic intake valve. A unloader is provided in order to hold the intake valve selectively in an open position, an electrically actuatable actuator is provided to activate the unloader, and a control unit is provided to control the actuator, the control unit being designed to actuate the actuator in such a way that an outlet pressure (p1) of the hydrogen at the outlet of the electrolysis unit, or a differential pressure (Δp) between an anode and a cathode of the electrolysis unit, is adjustable to a predefined target value (p1_target, Δp_target).
Resumen de: US2025296846A1
The present disclosure is directed to a sub-surface geothermal ammonia production system, comprising; a geothermal well having an inlet in fluid communication with an injection bore, and an outlet in fluid communication with a production bore, the inlet configured to receive a fluid mixture of hydrogen and nitrogen, and the outlet producing a fluid ammonia; and a catalyst disposed within the geothermal well, wherein the fluid mixture of hydrogen and nitrogen is drawn into the injection bore of the geothermal well absorbing thermal energy from geology surrounding the well before entering the production bore of the geothermal well, whereby the heated fluid mixture of hydrogen and nitrogen is drawn into contact with the catalyst to convert the fluid mixture of hydrogen and nitrogen into the fluid ammonia within the well.
Resumen de: US2025296852A1
There are provided processes for preparing a metal hydroxide comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum, the process comprising:reacting a metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum with lithium hydroxide, sodium hydroxide and/or potassium hydroxide and optionally a chelating agent in order to obtain a solid comprising the metal hydroxide and a liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate;separating the liquid and the solid from one another to obtain the metal hydroxide;submitting the liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate to an electromembrane process for converting the lithium sulfate, sodium sulfate and/or potassium sulfate into lithium hydroxide, sodium hydroxide and/or potassium hydroxide respectively;reusing the sodium hydroxide obtained by the electromembrane process for reacting with the metal sulfate; andreusing the lithium hydroxide obtained by the electromembrane process for reacting with the metal sulfate and/or with the metal hydroxide.
Resumen de: EP4621106A1
An electrolysis system (1) includes: an electrolysis cell (2); and a mediator reduction tank (4). The electrolysis cell (2) has: an anode electrode (10) that electrochemically oxidizes a reduced form (MRed) of a mediator; and a cathode electrode (8) that performs at least one of generation of hydrogen by electrochemical reduction of protons or water and generation of an organic hydride by electrochemical reduction of a hydrogenation target substance. The mediator reduction tank (4) non-photochemically reduces an oxidized form (MOx) of the mediator generated in the electrolysis cell (2).
Resumen de: EP4621107A1
A water electrolyzer includes a water electrolysis cell, a voltage applicator, a pressure regulating valve, and a controller. The water electrolysis cell includes a diaphragm or an electrolyte membrane, an anode, and a cathode. The anode is provided in one of two spaces separated by the diaphragm, or on one of two main surfaces of the electrolyte membrane. The cathode is provided in the other space separated by the diaphragm, or on the other main surface of the electrolyte membrane. The voltage applicator applies voltage between the anode and the cathode. In start-up of the water electrolyzer, the controller controls the voltage applicator to increase current flowing through the water electrolysis cell, and then controls the pressure regulating valve to increase set pressure of the pressure regulating valve.
Resumen de: EP4621890A1
The disclosure notably relates to a computer-implemented method for predictive maintenance of a system. The system comprises a hydrogen energy component, a cooling circuit, at least one actuator of the cooling circuit and at least one sensor collecting operating data during an operating of the system. The method comprises, during the operating of the system, the following three steps. The method comprises a first step of obtaining the operating data collected by to the at least one sensor. The method comprises a second step of estimating that a current state of the system is the fault state. The method comprises a third step of predicting a future state of the system. Such a method forms an improved solution for predicting maintenance of the system comprising the hydrogen energy component.
Resumen de: CN120226171A
The present disclosure relates to an electrochemical cell stack comprising solid state electrochemical cells (20), an electrically conductive separator (30); and a sealing element (40). The separator comprises: a central portion (31) having an oppositely recessed support surface (32) supporting the solid oxide cell, and a contact surface (34) opposite the recessed support surface contacting an adjacent solid state electrochemical cell; and a boundary portion (36) providing a relatively elevated top (37) and upstanding side walls (38). A sealing element (40) extends between an elevated top surface of the boundary portion and an opposing support surface (39) of an adjacent bulkhead. The spacing distance between the concave support surface and the contact surface of the adjacent separator, defined by the combined height of the sealing element and the upstanding side wall, is matched to the thickness of the solid state electrochemical cell.
Resumen de: EP4621098A1
The present invention is related to an electrolyzer for producing hydrogen and to a method for the production of hydrogen.The electrolyzer for producing hydrogen (210) comprises a plurality of electrolysis cells (1) arranged in a plurality of planes (2), each having at least one anode (10) and one cathode (11) and a proton exchange membrane (3) between the anode (10) and the cathode (11), the proton exchange membranes (3) forming respective active area regions (30), wherein at least one electrolysis cell (1) has a plurality of active area regions (30) arranged substantially in a plane (2), wherein the electrolyzer comprises at least one tie rod (130) provided between active area regions (30) and extending perpendicular with regard to the planes (2).
Resumen de: EP4620937A1
A process for preparing acetylene and/or synthesis gas by partial oxidation of hydrocarbons with an oxidizing agent, wherein the oxidizing agent comprises O2 and H2, wherein the oxidizing agent is obtained at least in part by water splitting, preferably by electrolysis, the water splitting, preferably the electrolysis, preferably using energy generated at least in part from non-fossil resources, a cracking gas stream obtainable by the process according to the present invention, acetylene obtainable by the process according to the present invention, acetylene having a low total cradle to gate product carbon footprint, synthesis gas obtainable by the process according to the present invention, synthesis gas comprising hydrogen, CO, CO2 and CH4, wherein the separated synthesis gas stream has a δ<18>O value of < 22 %o, referred to the international standard VSMOW ((Vienna- Standard- Mean-Ocean- Water)), the use of an oxidizing agent comprising O2 and H2 for the preparation of acetylene and synthesis gas, the use of the inventive acetylene or the acetylene obtained by the inventive process for the preparation of butynediol, butanediol, butenediol, polybutylene terephthalate (PBT), polybutylene adipate terephthalate (PBAT), tetrahydrofurane (THF), polytetrahydrofurane (polyTHF), polyester-based thermoplastic polyurethanes (TPUs), polyether-based TPUs, gamma-butyrolactone, pyrrolidine, vinylpyrrolidone, polyvinylpyrrolidone, N-methylpyrrolidone, vinyl ether, polyvinyl ether, terpen
Resumen de: AU2023381476A1
A cell frame adapted for use in a pressurised electrolyser cell stack is provided. From an inner circumferential rim of the cell frame, a circumferential radial shelf with inwardly tapering thickness is provided, such that an annular space between a circumferential radial shelf and a neighbouring circumferential radial shelf is provided when cell frames are stacked in alignment with each other, and that outwardly of the circumferential radial shelf, a mobility link is provided which connects the radial shelf to the remaining cell frame.
Resumen de: EP4621082A1
Apparatus (1) for metal smelting, wherein the metals processed in the smelting furnace are recycled metals, preferably recycled aluminium, comprising:- a smelting furnace comprising one or more burners (5) fed with methane from the network and air supplied by an atmospheric air blower (6) for intended for combustion;- a water electrolyser (4) capable of producing a mixture of gaseous hydrogen and oxygen; such gases being immediately conveyed to the burner (5) without interposition of storage tanks;characterised in thatsaid water electrolyser (4) is powered by a solar panel (2),further comprising batteries for storing the electric energy generated by said solar panel (2).Such apparatus further comprises a system adjusting the supply of gaseous hydrogen and oxygen using sensor measuring the quantity of carbon dioxide, carbon monoxide, nitrogen oxides, particulate matter generated during furnace operation.
Resumen de: AU2024301470A1
The present invention relates to an electrolysis system (100) comprising a renewable power generation plant (1), an electrolysis plant (3), a transformer station (27) and an AC bus bar (5), wherein the renewable power generation plant (1) is connected to the public electricity grid at a point of connection (POC) via the AC bus bar (5) and comprises a power plant controller (7) and a self-controlled converter (9) that is connected to the AC bus bar (5). The electrolysis plant (3) comprises an electrolysis active power controller (11) and a converter arrangement (13) that is connected to the AC bus bar (5), and wherein the electrolysis active power controller (11) is configured for controlling active power (P) of the electrolysis plant (3) at the AC bus bar (5) and the power plant controller (7) is configured for controlling reactive power (Q) at the point of connection (POC).
Resumen de: CN119907715A
Disclosed are a catalyst for ammonia dehydrogenation, a method for preparing the same, and a method for preparing hydrogen using the same. The disclosed catalyst for dehydrogenation of ammonia comprises a zeolite containing an intragranular cation, and an alkali metal and ruthenium which are immersed in the zeolite.
Resumen de: WO2025190462A1
The present invention relates to an alkaline electrolysis unit for splitting water into hydrogen and oxygen, comprising a housing with at least one vertically arranged anode, at least one vertically arranged cathode and at least one vertically arranged membrane between the anode and the cathode, separating the anode and the cathode horizontally, allowing passage of OH- from the cathode to the anode and separating cavities with water around the anode and the cathode, where the membrane is allowing passage of water between the cavities below the lower edge of the membrane, while oxygen and hydrogen gasses can escape the upwards in the cavities and out of the electrolysis unit, where the housing comprises a side wall and a top part, where the lower part of the housing forms a water reservoir and where, at the bottom part of the side wall, a water inlet is provided and where the top part has outlets for hydrogen and oxygen.
Resumen de: WO2025191910A1
This water electrolysis system comprises a water electrolysis cell, a differential pressure detection unit, and a differential pressure adjustment unit. The water electrolysis cell is provided with a negative electrode, a positive electrode, and an ion exchange membrane disposed between the negative electrode and the positive electrode, and generates hydrogen and hydroxide ions from an electrolyte fed to a negative electrode chamber between the negative electrode and the ion exchange membrane, and generates oxygen from the electrolyte fed to a positive electrode chamber between the positive electrode and the ion exchange film and from the hydroxide ions that have passed through the ion exchange membrane. The differential pressure detection unit detects differential pressure between the negative electrode chamber and the positive electrode chamber. The differential pressure adjustment unit adjusts the differential pressure between the negative electrode chamber and the positive electrode chamber on the basis of the differential pressure detected by the differential pressure detection unit.
Resumen de: WO2025190985A1
The invention relates to a simplified method and to a corresponding device that can be used to supply waste heat from ammonia synthesis plants, in which the hydrogen required to produce the ammonia is produced with the aid of water electrolysis, for further application with the aid of low-pressure steam. In the method and the corresponding device, low-pressure steam at a temperature of less than 200 °C and with a pressure of 5 to 15 bar is generated from the waste heat of the ammonia synthesis plant, said steam being usable for further applications. By using low-pressure steam, significant economical advantages can be achieved in comparison to the conventional use of medium-pressure steam when the method is carried out using discontinuous power sources. The invention further relates to devices which are designed to carry out such methods and to plants which have a part for generating ammonia and a part for utilizing waste heat from the aforementioned part, said second part being formed from the specified device.
Resumen de: WO2025190929A1
The present invention relates to a process for converting carbon dioxide into carbon monoxide using in situ generated carbon comprising the step of reacting a starting composition containing carbon dioxide and dibromomethane in a reactor at a temperature of 900 to 2,000°C so as to produce a carbon monoxide and hydrogen bromide containing gaseous reaction mixture.
Resumen de: WO2025190595A1
The invention relates to a method of operating a storage system (10) for a power-to-X application. The storage system (10) comprises a hydrogen storage means (2), wherein the hydrogen storage means (2) is coupled by a compressor (C1) to an electrolysis device (1) set up to produce hydrogen (H2) from renewable energy. The method comprises removing (S1) hydrogen (H2) from the hydrogen storage means (2) when hydrogen production by the electrolysis device (1) falls below a certain level, in particular owing to intermittent supply thereof with renewable energy, (S2) using the removed hydrogen (H2) as synthesis gas balance for a synthesis, and (S3) replenishing the hydrogen storage means (2) with produced hydrogen ((H2) via the compressor (C1) as soon as the hydrogen production exceeds the level.
Resumen de: WO2025190563A1
The invention relates to a process for obtaining hydrogen from water, in which an oxidation unit is supplied with a pumpable suspension of zinc particles in alkaline solution, zinc is oxidized electrochemically or thermally to zinc oxide in the oxidation unit (3) with release of hydrogen, the suspension leaving the oxidation unit (3) is fed to a reduction unit (4), and zinc oxides formed in the course of oxidation in the reduction unit (4) are electrochemically reduced to zinc with release of oxygen, and then the suspension leaving the reduction unit (4) is fed back to the at least one oxidation unit (3).
Resumen de: US2025290629A1
There is provided a system for consistent production of a low-or zero-emission flame comprising an electrolyser, a power assembly, a burner element, and a gas flow control system. There is also provided a device for consistent production of a low-or zero-emission flame using the disclosed systems. There is also provided a method for consistent production of a low-or zero-emission flame. There is further provided a kit for assembling, modifying or retrofitting an apparatus to permit consistent production of low-or zero-emission flame using the disclosed systems and methods.
Resumen de: US2025289715A1
Methods, solutions and material systems for increasing the heat yield for a substance which reacts with water to produce hydrogen gas and heat are disclosed herein. The methods include providing a substance which reacts with water to produce hydrogen gas and heat, providing an aqueous solution comprising an oxidizer and an optional salt, and reacting the substance and the composition to generate hydrogen and heat.
Resumen de: US2025289716A1
Proposed is a carbon dioxide capture and carbon resource utilization system, for a fuel cell, using boil-off gas (BOG) generated from liquefied natural gas. The system includes a liquefied natural gas storage configured to store liquefied natural gas (LNG), a hydrocarbon reformer configured to react boil-off gas generated from liquefied natural gas storage with water input from outside, thereby generating a gas mixture containing hydrogen and carbon dioxide, a fuel cell configured to generate electric power by receiving hydrogen, a reactor configured to capture carbon dioxide by reacting carbon dioxide with a basic alkali mixture solution and to collect a reaction product containing the captured carbon dioxide and to separate a carbon dioxide reaction product and a waste solution from the reaction product, and a hydrogen generator configured to generate hydrogen and to supply the generated hydrogen to the fuel cell.
Resumen de: US2025293279A1
A membrane electrode assembly includes a cathode portion including a cathode electrode and an anode portion disposed opposite the cathode portion and including an anode electrode. Additionally, the membrane electrode assembly includes a polymer electrolyte membrane extending between the cathode portion and the anode portion. Moreover, the membrane electrode assembly includes one or more metal oxides disposed therein with the metal oxides configured to react with hydrogen peroxide within the membrane electrode assembly. Additionally, the membrane electrode assembly includes one or more metal cations disposed therein with the metal cations configured to react with hydroxyl radicals disposed within the membrane electrode assembly.
Nº publicación: AU2024226531A1 18/09/2025
Solicitante:
ENEOS CORP
ENEOS CORPORATION
Resumen de: AU2024226531A1
This hydrogen carrier production system includes: a hydrogen production device which produces hydrogen; a hydrogen tank in which hydrogen produced by the hydrogen production device is stored; and a plurality of hydrogen carrier production devices in which hydrogen stored in the hydrogen tank is converted to different types of hydrogen carriers.
BOPI
Sede Electrónica
