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976
resultados
Última actualización
14/06/2025 [07:18:00]
Resultados 25 a 50 de 976
Resumen de: EP4567153A1
A method of electrolysing water, the method comprising:- providing an electrolyser comprising an anode; a cathode and optionally a separator;- contacting the cathode and/or the anode with an aqueous alkaline solution comprising water; and- electrolysing the water using a potential difference from the anode to the cathode,wherein at least one of the cathode and the separator comprises a substrate and a coating, wherein the coating comprises 9.5 to 35 wt% chromium; 10 to 75 wt% cobalt; and 10 to 60 wt% one or more further transition metals and/or one or more non-metallic elements selected from C, P, N and B, and wherein the coating catalyses hydrogen evolution at the cathode.
Resumen de: WO2024058606A1
The present invention relates to a method for preparing a NiMo-MoO3-x porous nanorod catalyst on the basis of a metal-organic framework and a non-precious alloy catalyst prepared thereby. The method for preparing a non-precious alloy catalyst according to the present invention can produce an alloy catalyst retaining excellent HER performance close to that of a commercial platinum catalyst by forming porous nanorods with a wide surface area having a combination of an alloy and an oxide.
Resumen de: CN118374814A
The invention discloses a device for preparing arsine through double-anode electro-catalysis and application, the device comprises a cathode electrolytic bath and two anode electrolytic baths arranged on the two sides of the cathode electrolytic bath, the cathode electrolytic bath and the anode electrolytic baths are separated through diaphragms, and anode catalysts are tightly attached to the side faces, facing the anode electrolytic baths, of the diaphragms; a cathode electrode is inserted into the cathode electrolytic bath and is connected with the negative electrode of the power supply through a wire, and the two anode catalysts on the two opposite sides of the two diaphragms are connected in parallel through wires and are connected with the positive electrode of the power supply. According to the invention, a dual-channel anode electrolytic bath structure is designed, and the capacity of transferring protons by reaction is regulated and controlled by increasing the quantity of the anode electrolytic bath and the anode catalyst, so that the current density of the reaction is directly improved, on one hand, the oxygen generation rate of the anode is improved, and on the other hand, the generation of cathode arsine is accelerated.
Resumen de: DE102023212354A1
Elektrolysesystem mit einem Stack (1), der einen Anodenraum (2) und einen Kathodenraum (3) aufweist und der dazu eingerichtet ist, Wasser elektrolytisch in Wasserstoff und Sauerstoff aufzuspalten, wobei der Kathodenraum (3) einen Einlass (9) und einen Auslass (10) aufweist. Dem Stack (1) ist ein Gas-Flüssig-Separator (11) zugeordnet, der über eine Ausleitung (12) mit dem Auslass (10) des Kathodenraums (3) verbunden ist und in dem Flüssigkeit von Gas getrennt wird, wobei der Gas-Flüssig-Separator einen Gasauslass (13) zum Abströmen des abgetrennten Gases aufweist. Der Gasauslass (13) mündet in einen zentralen Gas-Flüssig-Separator (25) zur Trennung von Flüssigkeit und Gas.
Resumen de: CN119243213A
The invention relates to the technical field of electro-catalysis hydrogen evolution, and discloses a preparation method and application of a double-gradient self-supporting hydrogen evolution electrode. The preparation method comprises the following steps: forming an oxygen-containing hydrophilic group on the surface of conductive carbon cloth to obtain pretreated carbon cloth; a metal organic framework composed of Co and dimethylimidazole grows on the surface of the pretreated carbon cloth in an in-situ self-growth mode, the metal organic framework forms triangular protrusions on the surface of the pretreated carbon cloth, roasting is conducted, and a geometric gradient electrode is obtained; and covering the surface of the geometric gradient electrode with a mask distributed with a plurality of through holes, applying a hydrophobic and aerophilic coating on the surface of the geometric gradient electrode through the through holes, and forming a plurality of hydrophobic and aerophilic areas on the surface of the geometric gradient electrode. By adopting the preparation method disclosed by the invention, the overpotential and the overpotential growth rate of the electrode under high current density can be effectively reduced.
Resumen de: US2025001352A1
The present disclosure relates to a pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and a hydrogen purification method using the same, and more specifically, the pressure swing adsorption apparatus includes a plurality of adsorption towers including a guard bed unit and a hydrogen purification unit, in which each adsorption tower is packed with different adsorbents, to purify high purity hydrogen from mixed hydrogen gas produced after ammonia decomposition, make it easy to replace the adsorbent for ammonia removal, minimize the likelihood that the lifetime of the adsorbent in the hydrogen purification unit is drastically reduced by trace amounts of ammonia, efficiently recover hydrogen of the guard bed unit, thereby maximizing the hydrogen recovery rate compared to a conventional pressure swing adsorption process including a pretreatment unit and a hydrogen purification unit, and respond to a large change in ammonia concentration in the raw material.
Resumen de: PL450397A1
Przedmiotem zgłoszenia jest przedstawiony na rysunku układ do kompresji wodoru, który składa się z elektrolizera, sprężarki i zbiornika do magazynowania, przy czym sprężarka realizuje kompresję wodoru w dwóch fazach: — fazie I kompresji - do magazynowania wodoru w zbiornikach oraz — fazie II kompresji - do tankowania urządzeń wodorem. Wynalazek znajduje zastosowanie w tworzeniu stacji tankowania aut wodorowych, magazynowaniu energii oraz transporcie i logistyce.
Resumen de: JP2025086209A
【課題】メタン合成の際に用いる触媒の劣化を抑制しつつ、メタン製造システムを高効率で動作維持可能に制御することを可能とする。【解決手段】メタン製造方法は、供給された電気エネルギーを用いて水電解装置における水電解により水素を生成する工程と、生成された水素と、二酸化炭素とをメタン合成装置において反応させてメタンを製造し、メタンを製造する際に発生した反応熱を前記水電解装置に伝導させる工程と、前記メタン合成装置の温度が、予め設定された目標温度となるように前記水電解装置に供給する電気エネルギー量を調整する工程と、を備える。【選択図】図３
Resumen de: JP2025086206A
【課題】メタン製造システムを高効率で動作維持可能に制御することを可能とする。【解決手段】メタン製造方法は、供給された電気エネルギーを用いて水電解装置における水電解により水素を生成する工程と、生成された水素と、二酸化炭素とをメタン合成装置において反応させてメタンを合成し、メタンを合成する際に発生した反応熱を前記水電解装置に伝導させる工程と、前記水電解装置から自己発熱によって発生する余剰熱量と前記メタン合成装置から前記水電解装置に伝導した熱エネルギー量の合計が、前記水電解装置における水電解反応において必要となる熱エネルギー量と等しくなるように前記水電解装置に供給する電気エネルギー量を調整する工程と、を備える。【選択図】図３
Resumen de: CN117285004A
The invention provides a ubiquitous light-gathering catalytic hydrogen production device and method and application. The ubiquitous light-gathering catalytic hydrogen production device comprises a hydrogen production unit, an artificial light-gathering light source unit and an electric power adjusting unit, the hydrogen production unit comprises a reaction tank and is used for preparing hydrogen and oxygen through artificial photocatalytic decomposition of water; the artificial condensation light source unit comprises a reflection assembly and a plurality of light-emitting assemblies, the light-emitting assemblies are used for emitting artificial light, and the reflection assembly is used for reflecting and gathering the artificial light into the reaction tank; the electric power adjusting unit is used for providing electric energy for the artificial condensation light source unit. According to the invention, electric power is converted into artificial light of a single wave band, artificial photocatalytic hydrogen production is carried out in a condensation mode, and the device is suitable for various electric power hydrogen production energy storage with fluctuation characteristics, especially hydrogen energy storage of low-price and negative-price electric power such as renewable energy power generation electric energy, valley electricity, abandoned electricity and the like.
Resumen de: US2025179671A1
A pressure control system for pressure control of at least two pressurized fluid systems comprises a duct for each fluid system having an inlet connectable to the respective fluid system and an outlet, a pressure control valve arranged within each of the ducts to control the fluid flow from the inlet to the outlet of the duct, wherein the pressure control valves are pilot-operated pressure relief valves having an inlet port for a pilot gas to affect a cracking pressure of the pressure control valves, wherein the pressure control system further comprises a common pilot gas buffer system, which is connected to each of the inlet ports of the pressure control valves for a simultaneous pressure control of the fluid systems.
Resumen de: US2025179985A1
A system and method by which energy from ocean waves is converted into hydrogen, and that hydrogen is used to manifest electrical and mechanical energies by an energy consuming device. A portion of the generated electrical power is communicated to water electrolyzers which produce oxygen and hydrogen from water as gases. At least a portion of the generated hydrogen gas is transferred to a transportation ship via a hose-carrying, remotely operated (or otherwise unmanned) vehicle, and subsequently transferred to an energy-consuming module or infrastructure, where a portion of the hydrogen is consumed in order to manifest a generation of electrical energy, a mechanical motion, and/or a chemical reaction.
Resumen de: US2025179941A1
A thermal energy storage system with fluid flow insulation, the system including heated thermal storage blocks positioned within a housing, and a method for operating the thermal energy storage system, including providing a flow of fluid into the housing, the fluid convectively extracting heat from a top region, a side region and a bottom region of the thermal energy storage system, to generate heated fluid that insulates the thermal storage blocks from the housing and a foundation of the thermal energy storage system.
Resumen de: US2025179942A1
An apparatus includes one or more thermal storage blocks that define a radiation chamber and a fluid flow slot positioned above the radiation chamber to define a fluid pathway in a first direction. The apparatus includes a heater element positioned adjacent to the radiation chamber in a second, different direction, wherein the radiation chamber is open on at least one side to the heater element. The apparatus includes a fluid movement system configured to direct a stream of fluid through the fluid pathway in the first direction.
Resumen de: US2025179901A1
A method of producing hydrogen and sequestering carbon or sulfur includes generating a fluid including at least one of water, steam, hydrogen sulfide, carbon dioxide and heat as a byproduct of a surface facility and injecting the fluid into a subsurface formation. The subsurface formation can include a porous rock, in various forms of porosity such as intragranular, intergranular, fracture porosity. The method can further include heating the fluid to stimulate an exothermic reaction of the fluid with components of the subsurface rock formation and produce a hydrogen reaction product and one or more of sulfur minerals from the hydrogen sulfide or carbon minerals from the carbon dioxide. The fluid can be heated to between about 25° C. and about 500° C. The method can also include extracting the hydrogen produced from the reaction of the fluid with the subsurface rock formation and mineralizing sulfur or carbon in the porous rock.
Resumen de: AU2023396734A1
The present invention relates to an ammonia decomposition catalyst and a method for producing same and, more specifically, to an ammonia decomposition catalyst containing alumina (Al
Resumen de: WO2025114702A1
There is provided a an apparatus for the photolysis of a target material. The apparatus comprises a chamber arranged to receive a target material, at least one emitter arranged to emit an electromagnetic radiation signal at or towards the target material in use, an electromagnetic field generator configured to generate an electromagnetic field within the chamber in use, and a controller. The controller is configured to control the electromagnetic field generator to generate an electromagnetic field in the presence of the target material, such that the electromagnetic radiation signal emitted by the at least one emitter is incident upon the target material in the presence of the generated electromagnetic field.
Resumen de: WO2025114716A1
A water-electrolyser anode for a proton exchange membrane (PEM) water electrolyser comprises: a transition metal oxychalcogenide catalyst having the formula ABxOy, wherein A is a transition metal and B is a chalcogenide, and wherein 0 < x < 2 and 0 < y < 2. Also provided are a proton exchange membrane (PEM) water electrolyser, a method of water electrolysis, use of a transition metal oxychalcogenide as a catalyst in an oxygen evolution reaction under acidic conditions, and a method of manufacturing an anode for an electrolyser.
Resumen de: WO2025114571A1
An electrolysis device configured to produce hydrogen gas from water, the electrolysis device comprising a container (4), the container accommodating an aqueous alkaline solution (5), a cathodic electrode (1), and an anodic electrode (2), an electrical current being selectively applied between the cathodic electrode and the anodic electrode, wherein the cathodic electrode and possibly the anodic electrode, is made of a nickel alloy, with a nickel base alloyed with at least one element chosen among chromium, molybdenum, cobalt and iron, wherein the cathodic electrode and the anodic electrode are manufactured by an additive manufacturing process, from respective first and second mixed metallic powder compounds, wherein the cathodic and anodic electrodes exhibit an outer surface comprising a plurality of first surface patterns (6,7).
Resumen de: WO2025114700A1
A process for preparing an oxygen evolution reaction (OER) catalyst comprises an oxygenated iridium component supported on a particulate solid support, which process comprising the steps of: (i) forming an aqueous mixture comprising a particulate solid support and a solution of a halide-free metal iridate; (ii) reducing the pH of the aqueous mixture to ≤ 5.0 to precipitate an oxygenated iridium component onto the particulate solid support; and (iii) isolating the product of step (ii).
Resumen de: WO2025113866A1
The invention relates to a process (100) for the production of hydrogen from ammonia comprising the following steps: - providing a water feed stream to a water electrolyzer (101); - performing a water electrolysis (102) of the water feed stream in the electrolyzer, producing an oxygen product stream and an electrolysis hydrogen stream; - providing an ammonia feed stream to an ammonia cracking reactor (103); - providing an oxidant stream (105) and performing a combustion reaction (106) with said oxidant stream, thereby generating heat; - in the ammonia cracking reactor, performing an endothermic reaction of ammonia cracking (104) of the ammonia feed stream with said generated heat; characterized in that the oxidant stream comprises at least a portion of the oxygen product stream produced by the water electrolysis of the water feed stream.
Resumen de: WO2025114080A1
The invention relates to a process (100) for producing a synthesis product (6), in which gaseous hydrogen (3) is provided by electrolysis (10) of water (1) and is subjected to a reaction (30) with one or more gaseous reactants (4) to form the synthesis product (6), wherein during a first process mode, the hydrogen (3) and the one or more reactants (4) are mixed to obtain a gaseous reaction mixture (5) and the gaseous reaction mixture (5), or a part thereof, is stored under pressure in a storage unit (20), and wherein during a second process mode the gaseous reaction mixture (5), or a part thereof, stored under pressure in the first process mode is taken from the storage unit (20) and fed to the reaction (30) to form the synthesis product (6). The invention also relates to a corresponding plant.
Resumen de: DE102023211891A1
Die vorliegende Anmeldung betrifft Verfahren sowie eine Anlage (10) zur Aufbereitung eines Sauerstoffgases, welches mittels Elektrolyse von Wasser und/oder Wasserdampf erzeugt und als Oxidationsmittel in einer hüttentechnischen Einrichtung (1) eingesetzt wird, wobei das mittels der Elektrolyse erzeugte Sauerstoffgas wenigstens einem Trocknungsschritt unterzogen wird, über welchen die in dem Sauerstoffgas enthaltenen Begleitgase Wasserstoff und Wasser, vorzugsweise quantitativ, entfernt werden
Resumen de: JP2025085515A
【課題】高い効率で水素を発生させることができる鉄基粉末を提供する。【解決手段】Ｃｕ－Ｋα線を用いたＸ線回折の回折ピークの内、α－Ｆｅ結晶の（１１０）回折面に相当する回折強度曲線の半価幅が０．０３°以上０．６０°以下の範囲である水素製造用鉄基粉末。【選択図】なし
Nº publicación: JP2025085516A 05/06/2025
Solicitante:
ＪＦＥスチール株式会社
Resumen de: JP2025085516A
【課題】高い効率で水素を発生させることができる鉄基粉末を提供する。【解決手段】Ｘ線回折の回折ピークの内、α－Ｆｅ結晶の（１１０）回折面に相当する回折強度曲線から求められる格子面間隔が２．０００Å以上２．１００Å以下の範囲である水素製造用鉄基粉末。【選択図】なし
BOPI
Sede Electrónica
