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794
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Última actualización
20/07/2025 [06:57:00]
Resultados 475 a 500 de 794
Resumen de: US2025179653A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
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: 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: 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: 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: 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: KR20250080797A
본 발명은 수소 제조를 위한 수전해용 전극 및 이의 제조방법에 관한 것으로, 본 발명에 따른 제조방법은 기존 이리듐(IrO2) 전극 제조 공정에 비하여 공정이 단순하며, 사용되는 열에너지가 낮고, 특히 열경화에 소요되는 시간을 단축할 수 있고, 코팅층 두께 조절이 용이할 뿐 아니라, 비교적 적은 설비 비용 및 제조 비용으로 수전해용 전극을 제조할 수 있으며, 공정의 단계를 수행하는데 적은 시간, 노동력, 에너지를 요하는 장점이 있다. 또한, 본 발명에 따른 제조방법으로 제조되는 수전해용 전극은 통상적으로 요구되는 전기화학적 안정성, 내화학성을 구비할 뿐 아니라, 실제 수소 제조 과정에서 보이드로 인한 결함을 방지하면서 생성되는 기포의 배출 효율 또한 높다는 장점을 갖는다.
Resumen de: KR20250081605A
암모니아 수전해용 촉매 전극에 있어, 백금 등 귀금속 기반 촉매로서 귀금속의 사용량을 최소화하면서도 기존 귀금속 촉매에 비해 우수한 성능의 암모니아 수전해 촉매 전극과 이를 효과적으로 제조할 수 있는 방법이 개시된다. 본 발명은 금속 구조체 상에 층상 이중 수산화물(Layered Double Hydroxide, LDH)이 형성된 지지체 표면에 활성 금속 촉매가 전착(electrodeposition)된 암모니아 수전해용 촉매 전극 및 이의 제조방법을 제공한다.
Resumen de: KR20250080331A
본 발명의 일실시예는 전기분해용 전극촉매의 제조 방법 및 이를 이용한 수계 내 총 유기탄소의 저감 방법에 관한 것이다.
Resumen de: KR20250080796A
본 발명은 초소수성 코팅층이 형성된 수전해용 분리막의 제조방법에 관한 것으로, 본 발명의 제조방법은 분리막의 제조 효율이 높을 뿐 아니라 제조 비용 및 궁극적으로 제품 판매 원가를 절감할 수 있으므로 산업적 효용가치가 매우 우수하다. 또한, 본 발명에 따른 초소수성 분리막은 수전해 공정에서 발생하는 수소 및 산소의 분리 효율이 높고, 수소 순도를 안정적으로 유지할 수 있으며, 수소 가스로의 산소 혼입 방지 성능이 탁월하여 폭발(화재) 위험을 원천적으로 차단할 수 있는 장점이 있다.
Resumen de: KR20250079969A
본 발명은 물분해용 비스무스 바나데이트 광전극 박막 제조방법 및 상기 전극의 몰리브덴 도핑 방법에 관한 것이다. 본 발명의 몰리브덴(Mo) 도핑된 BiVO4를 포함하는 비스무스 바나데이트 박막은 BiVO4 타겟과 MoO3 타겟을 이용하여 스퍼터링 방법으로 기판상에 동시에 증착하여 제조되며, 이렇게 몰리브덴 도핑된 비스무스 바나데이트 박막은 전기화학적 특성, 안정성 및 장기간 사용 가능성이 향상되고, 간단한 방법으로 최적의 몰리브덴 도핑 농도를 파악하여 결정 가능하다.
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
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
Resumen de: WO2025116392A1
One embodiment of the present invention relates to a hydrogen production reactor for producing hydrogen by decomposing ammonia. The hydrogen production reactor comprises: a housing; at least one reaction tube provided inside the housing and having an inlet into which a reactant containing ammonia flows in: a heating unit for providing heat to the reaction tube; a preheating unit provided in the reaction tube and extending in one direction; and a catalyst layer positioned downstream of the preheating unit and extending in one direction, wherein the preheating unit is filled with an oxide containing magnesium oxide (MgO).
Resumen de: WO2025116600A1
Disclosed is a catalyst for a hydrogen evolution reaction or a hydrogen oxidation reaction, which can be used under alkaline conditions and has significantly improved kinetic properties compared to conventional commercially-available platinum catalysts. The present invention provides a catalyst for electrochemical hydrogen reactions under alkaline conditions, which has 2 to 20 ruthenium atoms supported in an ensemble form on the surface of a molybdenum carbide-carbon nanocomposite support, and a manufacturing method therefor, and a ruthenium-based catalyst electrode comprising the catalyst, which can be used as an electrode for anion exchange membrane-based water electrolysis cells and fuel cells.
Resumen de: WO2025116572A1
The present invention relates to an electrode for water electrolysis for hydrogen production and a manufacturing method therefor. The manufacturing method according to the present invention achieves a simpler process compared with an existing iridium (IrO2) electrode manufacturing process, uses low thermal energy, shortens the time required for, especially, heat curing, facilitates the thickness adjustment of a coating layer, and can manufacture an electrode for water electrolysis at relatively low facility costs and manufacturing costs, and requires less time, labor, and energy to perform steps of the process. In addition, the electrode for water electrolysis obtained by the manufacturing method according to the present invention not only possesses generally required electrochemical stability and chemical resistance, but also exhibits high discharge efficiency of generated bubbles while preventing defects due to voids in an actual hydrogen manufacturing process.
Resumen de: WO2025116586A1
Disclosed are a catalyst electrode for ammonia water electrolysis and a manufacturing method thereof, the durability and catalytic activity of the catalyst electrode being improved by synthesizing platinum catalyst seeds through an ultrasonic treatment of a specific duration and inhibiting poisoning of a platinum catalyst by nickel hydroxide formed on the surface of a nickel support.
Resumen de: WO2025116024A1
Provided is a catalyst for hydrogen generation comprising a mixture of tungsten carbide and cobalt, the catalyst for hydrogen generation being characterized in that the absolute value of the cathode current per mg of the catalyst is 0.10 mA/mg or more when the catalyst for hydrogen generation is loaded on a glassy carbon electrode and subjected to potential scanning at -1.2 V with respect to a silver/silver chloride reference electrode under nitrogen bubbling in a 1 mol/L sodium hydroxide aqueous solution.
Resumen de: WO2025111640A1
A polymer electrolyte membrane (PEM) electrolyser or fuel cell system for the extraction of hydrogen, the electrolyser or fuel cell system comprising first and second end plate assemblies provided at longitudinal and opposed ends of the electrolyser or fuel cell system with an electrolyser stack positioned between the first and second end plate assemblies; the electrolyser stack comprising a plurality of electrolyser cells wherein each cell comprises bi-polar contact plates separated by a catalyst-coated membrane or catalyst coated electrodes and wherein the electrolyser stack is located between a pair of current collectors; wherein each of said current collectors is arranged adjacent said first and second end plate assemblies respectively with a compression arrangement being located at each end of the fuel cell stack to apply a compressive force on each of the current collectors thereby clamping the plurality of bi-polar contact plates and the plurality of catalyst-coated membranes and/or catalyst coated electrodes therebetween to apply uniform pressure across the bi-polar contact plates, wherein the compression arrangement is further configured to be adjustable to vary contact pressure between the plurality of bi-polar contact plates.
Resumen de: WO2025116571A1
The present disclosure relates to a manufacturing method for a separator for water electrolysis having a superhydrophobic coating layer. The manufacturing method of the present disclosure not only has high efficiency of manufacturing the separator, but also can reduce manufacturing costs and ultimately product sales costs, and thus has excellent industrial utility value. In addition, the superhydrophobic separator according to the present disclosure has high efficiency of separating hydrogen and oxygen generated in a water electrolysis process, can stably maintain hydrogen purity, and has excellent performance in preventing oxygen from being mixed into hydrogen gas, and thus can fundamentally block the risk of explosion (fire).
Resumen de: US2025179663A1
A production unit for the production of hydrogen or ammonia by electrolytic decomposition of water, with an electrolysis unit supplied with electrical energy by a photovoltaic unit and connected on the media side to a water storage tank and on the output side to a hydrogen tank, is intended to enable a particularly reliable and fluctuation-insensitive use of a regenerative energy source. For this purpose, the production unit is designed for floating operation and comprises a balloon envelope forming a buoyant body which can be filled with a buoyancy gas and which is provided with a support structure for the water storage unit, the electrolysis unit, the photovoltaic unit and the hydrogen storage unit.
Resumen de: US2025179654A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Nº publicación: US2025179658A1 05/06/2025
Solicitante:
H2FUEL WORKS B V [NL]
H2FUEL WORKS B.V
Resumen de: US2025179658A1
In a method of producing metal borohydride, M(BH4)n, from metal metaborate, M(BO2)n, in which M is a metal, such as a metallic metal, an alkali metal, an alkaline earth metal, a transition metal or a chemical compound behaving as a metal, and n is a valence value of the metal, metal borohydride is formed through a reaction of metal hydride, MHn, with trimethyl borate, B(OMe)3, and metal trimethyl borate is formed through a reaction of boric acid, H3BO3, with methanol, MeOH, under removal of water, H2O. An electrochemical cell is used for the conversion of metal metaborate and water, H2O, to boric acid, in the electrochemical cell. The electrochemical cell has an anodic half-cell and a cathodic half-cell separated by a cation exchange membrane, and a solvent and water is provided to both the anodic half-cell and the cathodic half-cell. Metal metaborate is provided to the anodic half-cell, where acid ions, H+, and electrons, e−, are generated at the anode from electrolysis of water, and H reacts with metal metaborate and water. The cation exchange membrane passes metal ions, Mn+, from the anodic half-cell to the cathodic half-cell, and metal hydroxide, M(OH)n, is formed in the cathodic half-cell.
BOPI
Sede Electrónica
