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415
resultados
Última actualización
14/01/2026 [06:54:00]
Resultados 250 a 275 de 415
Resumen de: AU2024213038A1
An electrolyser system and method of electrode manufacture. The electrolyser system may comprise a first vessel in communication with an electrolyser stack, a power supply, an electrode, a separator, a membrane, and a second vessel in communication with the electrolyser stack. The electrode may comprise a catalytic material and a micro- porous and/or nano-porous structure. The method of electrode manufacture may comprise providing a substrate, contacting the substrate with an acidic solution, applying an electric current to the substrate, simultaneously depositing a main material and supporting material comprising a scarifying material onto the substrate, and leaching the scarifying material.
Resumen de: CN120344485A
The present invention relates to the field of hydrogen production from catalytic cracking of ammonia. The present invention comprises a primary cracking path comprising one or more catalyst-containing reaction tubes disposed within a roasting-type ammonia cracking reactor; and a parallel cleavage path comprising one or more secondary ammonia cleavage reactors arranged in succession and fluidly connected to each other. The invention can be used for producing hydrogen from ammonia.
Resumen de: AU2024240321A1
An electrochemical system includes a counter electrode and a working electrode spaced from the counter electrode. The working electrode includes a substrate, an array of conductive projections supported by the substrate and extending outwardly from the substrate, each conductive projection of the array of conductive projections having a semiconductor composition, and including a surface, the surface including nitrogen, and an oxynitride layer disposed on the surface. The counter electrode and the working electrode are arranged in a two-electrode configuration.
Resumen de: AU2024222987A1
A system, comprising: an electrolyzer having a plurality of electrolysis cells arranged in a cell stack, wherein the electrolysis cells are electrically connected in series and grouped into two or more cell groups, each cell group having an electrical contact at either end; an electrical circuit having one or more switches, each switch coupled between the electrical contacts of a respective one of the cell groups and configured to selectively disconnect the cell group from the cell stack by electrically bypassing the cell group via a lower resistance path, to thereby vary the number of active electrolysis cells in the cell stack; and a controller configured to determine the number of active electrolysis cells based on a variable amount of direct current (DC) electrical energy supplied to the cell stack by an electrical energy source, and to control the one or more switches based on the determination.
Resumen de: WO2025014390A1
Claimed are a method for producing hydrogen from ammonia and a plant for the implementation thereof. Liquid ammonia feedstock is heated, evaporated and superheated in a coil of a heat-reclaiming module. The gaseous ammonia feedstock is fed into an ammonia cracking reactor, the obtained nitrogen-hydrogen mixture is cooled in an air-cooling unit, and hydrogen is recovered. Liquid ammonia fuel is heated, evaporated and superheated. The gaseous ammonia fuel is mixed with the vent gases produced during the recovery of hydrogen, and the obtained fuel gas is fed together with heated air into the ammonia cracking reactor. The evaporation and superheating of the ammonia feedstock and the ammonia fuel are carried out in recuperative heat exchangers. An outlet for the flue gases of the ammonia cracking reactor is connected to the heat-reclaiming module. Arranged in series inside the heat-reclaiming module are coils for heating gaseous ammonia, fuel gas, air, a heat transfer agent, and liquid ammonia. The pressure of the flue gases is increased, the flue gases are cooled, and condensed distilled water is recovered in a separator, with the dewatered flue gases being released into the atmosphere. The invention makes it possible to increase the efficiency of low-carbon hydrogen production and to obtain an additional product in the form of distilled water.
Resumen de: AU2024276790A1
The specification describes a process for preparing an oxygen evolution reaction catalyst, comprising the steps of: (i) combining iridium powder and a peroxide salt to produce a powder mixture; (ii) carrying out thermal treatment on the powder mixture; (iii) dissolving the product from (ii) in water to produce a solution; (iv) reducing the pH of the solution from (iii) to affect a precipitation and form a solid and a supernatant; (v) separating the solid from the supernatant; and (vi) drying the solid. An oxygen evolution catalyst obtainable by the process is also described.
Resumen de: AU2024262055A1
A family of catalysts for oxygen evolution reaction (OER) in alkaline condition is disclosed. The catalysts utilize elements which are abundant on earth, leading to lower costs compared to IrCh catalysts. The catalysts can be used in the anode of an anion exchange membrane-based water electrolyzer. The family of new catalysts comprises Ni, Fe, M, B, and O, where M is a metal from Group VIB, Group VIII, and elements 57-71 of the Periodic Table. The catalyst has a layered double hydroxide structure. Methods of making the catalysts are also described.
Resumen de: AU2024263112A1
The present invention relates to an electrode and in particular to an electrode suitable for gas evolution comprising a metal substrate and a catalytic coating. Such electrode can be used as an anode for the development of oxygen in electrolytic processes such as, for example, in the alkaline electrolysis of water.
Resumen de: CA3273968A1
5 10 15 20 25 30 35 Abstract The present invention relates to a method of preparing a composite material, in particular one useful as a catalyst in an electrolytic hydrogen evolution reaction and/or the oxygen evolution reaction and/or urea oxidation-assisted water electrolysis. Provided is a method of preparing a composite material, the method comprising the steps of: (i) electrochemically depositing material onto a substrate from a deposition solution comprising a nickel (II) salt and graphene oxide, to obtain a nickel-reduced graphene oxide composite material comprising nickel dispersed on reduced graphene oxide, said composite material being deposited on the substrate; (ii) after step (i), placing the substrate, having the nickel-reduced graphene oxide composite deposited thereon, in an alkaline solution along with a counter electrode; and (iii) after step (ii), partially electrochemically oxidising the nickel, to obtain a partially oxidised nickel-reduced graphene oxide composite material comprising partially oxidised nickel dispersed on reduced graphene oxide, said composite material being deposited on the substrate. The composite of the invention demonstrates high catalytic activity for electrolytic hydrogen production under alkaline water electrolysis conditions (for example, a hydrogen evolution current of up to 500 mA cm-2 at -1.35 V against a Reversible Hydrogen Electrode). High activity is demonstrated even when the substrate (on which the composite is deposited)
Resumen de: CA3268521A1
In a process in which ammonia is cracked to form a hydrogen gas product and an offgas comprising nitrogen gas, residual hydrogen gas and residual ammonia gas, residual ammonia is recovered from the offgas from the hydrogen recovery process by partial condensation and phase separation, and hydrogen is recovered from the resultant ammonia-lean offgas by partial condensation and phase separation. The recovered ammonia may be recycled the cracking process and the recovered hydrogen may be recycled to the hydrogen recovery process to improve hydrogen recovery from the cracked gas. Overall hydrogen recovery from the ammonia may thereby be increased to over 99%.
Resumen de: AU2025203497A1
A system and a method for stabilizing hydrogen flow to a downstream process in a facility determining a hydrogen density and pressure profiles in the hydrogen storage unit 5 for different target net hydrogen flows at different time intervals of a time horizon of a renewable power availability profile, determining an operating target net hydrogen flow of a hydrogen feed to the downstream process, determining a target direct hydrogen flow of a hydrogen feed and a target stored hydrogen flow of a hydrogen feed to the downstream process, and controlling the operation of the downstream process based on the operating 10 target hydrogen flows. A system and a method for stabilizing hydrogen flow to a downstream process in a 5 facility determining a hydrogen density and pressure profiles in the hydrogen storage unit for different target net hydrogen flows at different time intervals of a time horizon of a renewable power availability profile, determining an operating target net hydrogen flow of a hydrogen feed to the downstream process, determining a target direct hydrogen flow of a hydrogen feed and a target stored hydrogen flow of a hydrogen feed to the downstream 10 process, and controlling the operation of the downstream process based on the operating target hydrogen flows. ay a y
Resumen de: CA3249699A1
The present invention proposes a process for producing synthesis gas, in particular synthesis gas for methanol synthesis. The process comprises the steps of providing a sulfur-containing hydrocarbon stream; providing an electrolytically produced hydrogen stream; supplying a portion of the electrolytically produced hydrogen stream to at least a portion of the sulfur-containing hydrocarbon stream to obtain a hydrogen-enriched sulfur-containing hydrocarbon stream; desulfurizing the stream obtained according to step (c) in a hydrodesulfurization unit (HDS unit) (12) to obtain a sulfur-free hydrocarbon stream; supplying a portion of the electrolytically produced hydrogen stream to at least a portion of the stream obtained according to step (d) to obtain a hydrogen-enriched sulfur-free hydrocarbon stream and converting at least a portion of the stream obtained according to step (e) into a synthesis gas stream in the presence of oxygen as oxidant in a reforming step.
Resumen de: CA3271574A1
The invention relates to the coating of anion exchange membranes (AEM) with catalytically active substances. The CCM thus obtained are used in electrochemical cells, especially for alkaline water electrolysis. It was an object of the invention to specify a process for producing a CCM by direct 5 coating which maintains the necessary planarity of the AEM and ideally avoids the use of lost films and eschews CMR substances. Swelling shall also be minimized. The process shall also be performable with fluorine-free ionomers. The invention is based on the finding that the addition of certain organic substances has the result that the AEM swells only to a small extent, if at all (antiswelling agent). It has surprisingly been found that substances suitable as antiswelling agents 10 are identifiable by their solubility behaviour, more particularly by their Hansen parameters. Fig. 4 accompanies the abstract
Resumen de: MA71492A1
Electrochemical cell system (100) which comprises an electrochemical cells arrangement (10), a control unit (20) configured to operate the electrochemical cells arrangement (10) only as electrolytic cells or only as fuel cells, a heat unit (40), external to the electrochemical cells arrangement (10), which is thermally coupled to the electrochemical cells arrangement (10) and which is configured to alternately store heat from the electrochemical cells arrangement (10) to the heat unit (40) and supply heat from the heat unit (40) to the electrochemical cells arrangement (10), and a transfer arrangement (30) configured to alternately transfer heat from the electrochemical cells arrangement (10) to the heat unit (40) and from the heat unit (40) to the electrochemical cells arrangement (10).
Resumen de: MA69007A1
The invention relates to a method for producing methanol, in which a synthesis gas (25) which was obtained from biomass (5) is supplied to a methanol synthesis device (80). In a main operating mode in which sufficient electric power is available for obtaining hydrogen by electrolysis, hydrogen (45) accordingly obtained by electrolysis is supplied to the methanol synthesis device (80). In a secondary operating mode in which insufficient electric power is available for producing hydrogen (45) by electrolysis, a residual gas (26) which results from the synthesis gas (25) being separated from a biogas (15) obtained from the biomass (5) is supplied to a generator (50) in order to provide electric power for devices (10, 20, 30, 40, 70, 80) which are involved in the method.
Resumen de: WO2024231569A1
The present invention discloses an electrolyser cell frame assembly comprising a cell frame with an inner peripheral edge and an outer peripheral edge; a gasket with an inner peripheral edge and an outer peripheral edge; and a cell element with a peripheral edge compressed between the gasket and the cell frame. The gasket exhibits compressible characteristics whereas the cell frame exhibits rigid characteristics. The outer peripheral edge of the gasket extends outwards over the peripheral edge of the cell element in the direction of the outer peripheral edge of the cell frame such that the gasket overlaps a predefined part of the cell frame.
Resumen de: WO2024162842A1
A method of generating hydrogen and oxygen from a liquid feed stream through an integrated system of forward osmosis and electrolysis, wherein the method comprising the steps of feeding water into an electrolyte solution by means of forward osmosis and applying a voltage across the electrolyte solution to generate hydrogen and oxygen, characterized in that the electrolyte solution comprising an electrolyte, an ionic liquid and a solvent, wherein the electrolyte is used in an amount ranging between 1 wt% to 10 wt% of the electrolyte solution, wherein the ionic liquid is used in an amount ranging between 1 wt% to 5 wt% of the electrolyte solution and wherein the solvent is used in an amount ranging between 75 wt% to 99 wt% of the electrolyte solution.
Resumen de: WO2024184586A1
The invention relates to a method for producing hydrogen. The method comprises providing water and a gaseous substance, the gaseous substance comprises hydrogen atoms and carbon atoms, producing a mixture comprising the water and bubbles comprising the gaseous substance, decreasing diameter of the bubbles comprising the gaseous substance, and producing gaseous hydrogen by decomposing the gaseous substance in the bubbles having the decreased diameter. The invention further relates to apparatus for producing hydrogen gas.
Resumen de: CN118461035A
The invention provides an electrode catalyst and a preparation method and application thereof, the electrode catalyst comprises a nanosheet catalyst structure, a plurality of holes are formed in the surface of the nanosheet catalyst structure, and the size of the holes is smaller than 80 nm. According to the electrode catalyst and the preparation method and application thereof, electrode catalysts of different structures are obtained, the specific surface area of the electrode catalyst is increased, and active sites are increased, so that the catalytic efficiency is improved, and the production cost is reduced.
Resumen de: US2025361626A1
An electrolysis device includes a water electrolysis stack configured to electrolyze water, a gas-liquid separator configured to separate hydrogen gas from water discharged from the water electrolysis stack, and a hydrogen compression stack configured to compress the hydrogen gas separated by the gas-liquid separator. The gas-liquid separator includes a storage tank configured to store water, and a maximum storage water level that is a maximum value of a water level that can be allowed in the storage tank is predetermined, and the hydrogen compression stack is located above the maximum storage water level.
Resumen de: AU2024276790A1
The specification describes a process for preparing an oxygen evolution reaction catalyst, comprising the steps of: (i) combining iridium powder and a peroxide salt to produce a powder mixture; (ii) carrying out thermal treatment on the powder mixture; (iii) dissolving the product from (ii) in water to produce a solution; (iv) reducing the pH of the solution from (iii) to affect a precipitation and form a solid and a supernatant; (v) separating the solid from the supernatant; and (vi) drying the solid. An oxygen evolution catalyst obtainable by the process is also described.
Resumen de: NZ799208A
The method and plant (1) for conversing solid recovered fuel pellets (117) made from municipal solid waste (103) allow the transformation of the municipal solid waste (103) into hydrogen with a high yield instead of landfilling or incinerating the municipal solid waste (103). The hydrogen rich product gas stream (601) can be used as feedstock for chemical reactions or for storing energy in a releasable manner.
Resumen de: KR20250166437A
본 발명의 일실시예는 고체산화물 전기화학전지 제조 방법 및 고체산화물 전기화학전지를 제공한다. 본 발명에 따른 실시예는 전구체 기반의 증착법을 제공하여 분말 기반 증착법 대비 약 50% 감소한 결정립 크기를 갖는 계면 기능층을 형성하고, 산소환원 및 산소발생 반응의 반응성을 크게 개선할 수 있는 효과가 있다.
Resumen de: AU2024244659A1
An electrode catalyst layer 2 comprises catalyst particles 12, an ionomer 13, and ionomer-adsorbing carbon fibers 14α. The ionomer-adsorbing carbon fibers 14α may have an ionomer adsorption amount of 10 mg or larger per g of the ionomer-adsorbing carbon fibers, may have a diameter within the range of 50 nm to 1 μm, and may be hydrophilized vapor-phase growth carbon fibers (VGCF).
Nº publicación: KR20250166934A 28/11/2025
Solicitante:
JOHNSON MATTHEY DAVY TECHNOLOGIES LTD [GB]
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Resumen de: TW202442579A
A process for the catalytic cracking of ammonia, the process comprising: supplying an ammonia feed gas to one or more heated catalyst containing reaction vessels disposed within an ammonia cracking reactor; and cracking the ammonia in the ammonia feed gas in the one or more catalyst containing reaction vessels to produce a hydrogen containing stream, wherein the ammonia feed gas is fed into the or each reaction vessel at a pressure of at least 10 bar, wherein the or each reaction vessel is heated to a temperature of at least 500 DEG C, and wherein the or each of the reaction vessels has a wall comprising or consisting of an alloy selected to be resistant to both nitriding and creep deformation at said temperature and pressure over an operating period of at least 1000 hours, 5000 hours, 10,000 hours, 50,000 hours, or 100,000 hours without failure.
BOPI
Sede Electrónica
