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63
resultados
Última actualización
21/11/2025 [06:45:00]
Resultados 25 a 50 de 63
Resumen de: WO2025232473A1
The present invention relates to the technical field of the electrolysis of water, and specifically relates to a low-hydrogen-permeability proton exchange membrane, and a preparation method therefor and the use thereof. The proton exchange membrane comprises a Pt-containing additive layer and a matrix membrane, wherein the Pt-containing additive layer is composed of a Pt additive and a fluorine-containing proton exchange resin, the Pt-containing additive layer comprises an array layer and a flattening layer, the thickness ratio and the active-component ratio of the array layer to the flattening layer are respectively within the ranges of 1:(0.5-30) and 1:(1-50), and the array layer is composed of arrays arranged in order and an array layer resin coating the arrays. In the low-hydrogen-permeability proton exchange membrane provided by the present invention, by providing the Pt-containing additive layer consisting of the array layer and the flattening layer, the specific surface area of the Pt-containing additive layer is effectively increased by means of the arrays in the array layer, thereby achieving the efficient utilization of an additive; moreover, the hydrogen permeability improvement effect is further improved by controlling the thickness ratio and the active-component ratio of the array layer to the flattening layer and the parameters of the arrays.
Resumen de: WO2025235469A1
A gas production system includes an electrolyzer configured to provide an electrolysis gas including a mixture of hydrogen gas and oxygen gas. The gas production system includes a housing having a housing inlet configured to receive the electrolysis gas from the electrolyzer. The gas production system includes a catalyst member disposed in the housing. The catalyst member includes a first catalyst bed configured to receive the electrolysis gas from the housing inlet. The first catalyst bed includes a first catalyst material. The catalyst member includes a second catalyst bed separated from the housing inlet by the first catalyst bed and configured to receive the electrolysis gas from the first catalyst bed. The second catalyst bed includes a second catalyst material different from the first catalyst material.
Resumen de: WO2025232414A1
The present invention relates to a membrane-free chemical-looping cyclic water electrolysis hydrogen production device and method based on intrinsic safety. The device comprises two electrolytic cells, a normal-temperature alkali liquor buffer tank, a high-temperature alkali liquor buffer tank, an oxygen separation device, a hydrogen separation device, a storage tank, and an external power supply, wherein at least one electrolytic chamber is formed in each electrolytic cell, an anode plate and a cathode plate are provided in each electrolytic chamber, a porous partition plate is provided between the anode plate and the cathode plate, and the anode plate material contains a chemical-looping oxygen carrier. The method comprises: each electrolytic cell alternately operating in first and second working conditions, and the two electrolytic cells in the same time period being in different working conditions, so as to realize synchronous and continuous production of hydrogen and oxygen in different spaces. The first and the second working conditions are respectively as follows: under the conditions of a normal-temperature alkali liquor and circuit connection, a cathode performs electrochemical hydrogen production, and the chemical-looping oxygen carrier of an anode is oxidized into an oxidized-state chemical-looping oxygen carrier; and under the conditions of a high-temperature alkali liquor and circuit disconnection, the oxidized-state chemical-looping oxygen carrier of the anode i
Resumen de: WO2025232351A1
A reactor and method for hydrogen production from wastewater. The reactor for hydrogen production from wastewater comprises: an electrolytic cell (1), a gas-liquid separation assembly (2), a desorption unit (3), a first control valve, and a second control valve, wherein the electrolytic cell (1) has an electrolyte inlet (11) and an electrolyte outlet (12); the gas-liquid separation assembly (2) comprises a gas-liquid separation unit (21), the gas-liquid separation unit (21) has a separation inlet (211) and a separation outlet (212), and the separation inlet (211) is in communication with the electrolyte outlet (12); the desorption unit (3) has a liquid inlet (31), a liquid outlet (32), a carrier gas inlet (33), and a carrier gas outlet (34), the liquid inlet (31) is connected to the separation outlet (212), and the liquid outlet (32) is connected to the electrolyte inlet (11); the first control valve is connected to the separation outlet (212) to control the liquid discharge rate at the separation outlet (212); and the second control valve is connected to the carrier gas inlet (33) to control the gas inlet rate at the carrier gas inlet (33). In hydrogen production using the reactor, the purity can be conveniently adjusted.
Resumen de: WO2025231966A1
Disclosed in the present invention are a titanium alloy bipolar plate with a high pitting potential and a low resistivity and a preparation method therefor. The titanium alloy bipolar plate comprises the following components in percentages by mass: 3.0-5.0% of Mo, 0.1-0.3% of Ni, 0.005-0.05% of Ru and the balance being Ti, and the total content of impurity elements (Fe, O, C, N and H) does not exceed 0.01%. According to the titanium alloy bipolar plate of the present invention, on the basis of meeting the electrical conductivity requirement, the pitting potential of the titanium alloy bipolar plate can be improved, such that the problems of a relatively poor corrosion resistance and a low hydrogen production efficiency caused due to the relatively low pitting potential of the titanium alloy bipolar plate in a service environment of a water electrolysis hydrogen production electrolytic bath are fundamentally solved.
Resumen de: US2025347009A1
Disclosed are a transition metal-doped iridium-based composite catalyst and its preparation and use. The catalyst is essentially composed of amorphous oxides of iridium and a transition metal. The transition metal is selected from a metal of Group IVB, a metal of Group VB or a combination thereof. In terms of moles, the ratio of the content of iridium to the content of the transition metal in the catalyst is (0.4-0.7):(0.3-0.6). In the XRD spectrum of the catalyst, there is no diffraction peak corresponding to Iridium oxide in rutile phase. There is no diffraction peak corresponding to the crystalline phase of the oxide of the transition metal. The catalyst is in the form of a nano powder, has a uniform bulk structure, high catalytic activity and low usage amount of the precious metal iridium, and has excellent performance when applied to the anode of a proton exchange membrane water electrolyzer.
Resumen de: US2025347210A1
A hydrogen ecosystem for producing oil and gas is described, where land local to an oil field hosts each of the following components: one or more producing oil wells, one or more non-producing oil wells, and optionally one or more new wells; a wind farm or a solar farm, or both, for generating electricity; said wind farm or a solar farm, or both, electrically connected to an electrolyzer for converting water to hydrogen; said electrolyzer fluidly connected to a compressor for producing compressed hydrogen; said compressor fluidly connected to a high pressure injection line for injecting said compressed hydrogen into a hydrogen storage well (HSW), said hydrogen storage well being a non-producing well that has been plugged and fitted for hydrogen storage; said HSW fluidly connected to a pressure reducing regulator for producing uncompressed hydrogen; said pressure reducing regulator fluidly connected to a pipeline for delivering said uncompressed hydrogen to a hydrogen power unit for converting said uncompressed hydrogen to electricity; said electricity electrically connected to oil production equipment for producing hydrocarbons from said oil field.
Resumen de: US2025347235A1
The disclosure provides systems and′methods for generating electricity, while using a portion of the generated electricity and/or thermal energy (heat) for producing green hydrogen through the electrolysis of water. Using this protocol, a first round of electricity can be generated at a combustion device, i.e., a combustion turbine unit, and the excess thermal energy (heat) generated can be used to generate a second round of electricity, in order to evacuate any contaminating gases from either the first round or the second round of electrical power generation, the contaminating gases are made to flow through a chimney stack and dispersed into the environment.
Resumen de: US2025346818A1
Electrical power derived from a renewable energy source is used to perform electrolysis of water to produce oxygen and hydrogen. A feed stream includes consumer waste plastics, a waste stream from a hydrocarbon refinery, or both. The feed stream is partially oxidized to produce syngas. At least a portion of the carbon monoxide of the syngas is reacted with water to produce additional carbon dioxide and hydrogen. A hydrocarbon feed stream is hydroprocessed using at least a portion of the hydrogen generated by electrolysis and at least a portion of the hydrogen from the syngas to produce a hydroprocessing product stream including a saturated hydrocarbon. At least a portion of the carbon dioxide of the syngas is hydrogenated using at least a portion of the hydrogen generated by electrolysis to produce a product stream including a hydrocarbon, an oxygenate, or both.
Resumen de: US2025346542A1
Embodiments of the present invention relates to two improved catalysts and associated processes that directly converts carbon dioxide and hydrogen to liquid fuels. The catalytic converter is comprised of two catalysts in series that are operated at the same pressures to directly produce synthetic liquid fuels or synthetic natural gas. The carbon conversion efficiency for CO2 to liquid fuels is greater than 45%. The fuel is distilled into a premium diesel fuels (approximately 70 volume %) and naphtha (approximately 30 volume %) which are used directly as “drop-in” fuels without requiring any further processing. Any light hydrocarbons that are present with the carbon dioxide are also converted directly to fuels. This process is directly, applicable to the conversion of CO2 collected from ethanol plants, cement plants, power plants, biogas, carbon dioxide/hydrocarbon mixtures from secondary oil recovery, and other carbon dioxide/hydrocarbon streams. The catalyst system is durable, efficient and maintains a relatively constant level of fuel productivity over long periods of time without requiring re-activation or replacement.
Resumen de: US2025346486A1
An embodiment of the present disclosure provides a production apparatus for high purity hydrogen, the production apparatus including: a decomposition reaction unit configured to decompose ammonia through ammonia decomposition reaction and discharge reaction products including hydrogen and nitrogen produced from the ammonia decomposition reaction and non-reacting ammonia; an adsorption refinement unit configured to discharge intermediate refined products by separating or removing ammonia from the reaction products; and a hydrogen separation membrane configured to discharge a high-purity hydrogen product by refining high-purity hydrogen by separating and filtering the intermediate refined products.
Resumen de: US2025346485A1
Photocatalytic water-splitting processes are described using an aqueous solution of at least one neutral salt, where the process is conducted at a temperature of 200-400° C. When compared with conventional photocatalytic water-splitting processes, the processes of the invention give rise to notably increased activity and quantum efficiency.
Resumen de: US2025345783A1
The present invention relates to a catalyst for an ammonia decomposition reaction, a method for preparing same, and a method for producing hydrogen by using same. More specifically, the present invention relates to a method for preparing a catalyst for an ammonia decomposition reaction, which economically and efficiently supports highly active ruthenium on a lanthanum-cerium composite oxide support, thereby preparing a catalyst that exhibits a higher ammonia conversion rate than conventional catalysts for an ammonia decomposition reaction, to a catalyst for an ammonia decomposition reaction prepared by the same method, and a method for producing hydrogen by using the same.
Resumen de: US2025346544A1
Electrical power derived from a renewable energy source is used to perform water electrolysis to produce oxygen and hydrogen. A flue gas and heat are produced from combustion of a fuel using at least a portion of the oxygen generated by electrolysis. A feed stream including hydrocarbon oil is hydroprocessed using the generated heat and at least a portion of the hydrogen generated by electrolysis to produce a product including a saturated hydrocarbon. At least a portion of the flue gas is hydrogenated using at least a portion of the hydrogen generated by electrolysis to produce a second product stream including a hydrocarbon, an oxygenate, or both.
Resumen de: US2025347005A1
The present invention relates to a method for the combined electrolytic and thermal production of hydrogen gas, the method comprising: (i) providing a plasma treatment unit having a plasma treatment chamber comprising first and second electrodes, and a first gas outlet in fluid communication with said plasma treatment chamber; wherein a base portion of the plasma treatment chamber forms a reservoir of an aqueous electrolyte; wherein the first electrode is comprised within a plasma torch whereby the plasma torch is arranged at a distance above a surface of the reservoir; and wherein the second electrode is submerged in the aqueous electrolyte; (ii) establishing a DC electric potential between the first and second electrodes whilst providing a flow of non-oxidising ionisable gas between the first electrode and the surface of the reservoir to generate and sustain a plasma arc therebetween, thereby producing hydrogen gas in the plasma treatment chamber; and (iii) recovering the hydrogen gas via the first gas outlet. The present invention also relates to a plasma treatment unit.
Resumen de: WO2024129657A1
The present invention provides a device for carbon dioxide recovery from alkaline water using a module having at least three compartments where each compartment is separated by an electrode pair (anode and cathode) with electrochemical reactions occurring at the electrodes. The electrodes can be in a unipolar or bipolar configuration. Multiple electrochemical modules can be electrically connected in series, in parallel, or in a combination of both series and parallel. Also disclosed it the related process for recovering carbon dioxide from alkaline water.
Resumen de: AU2025202385A1
The present invention is an adhesive-fixed electrolysis module comprising a single stack, the single stack having a separator, a pair of bipolar plates, a pair of gaskets, a pair of diffusion layers, a pair of electrodes, and a cell frame, wherein the bipolar plates, the gaskets, 5 the diffusion layers, and the electrodes are sequentially arranged on the cathode and anode sides, respectively, with respect to the separator, forming a symmetrical structure, wherein the separator, the bipolar plates, the gaskets, the diffusion layers, and the electrodes are stacked in a zero-gap manner within the cell frame, and wherein the bipolar plates are adhered and fixed to the cell frame using an adhesive, thereby simplifying product assembly 10 and reducing assembly costs compared to a single stack fixing method using welding, riveting, bolting, etc. between conventional parts. The present invention is an adhesive-fixed electrolysis module comprising a single stack, the single stack having a separator, a pair of bipolar plates, a pair of gaskets, a pair of 5 diffusion layers, a pair of electrodes, and a cell frame, wherein the bipolar plates, the gaskets, the diffusion layers, and the electrodes are sequentially arranged on the cathode and anode sides, respectively, with respect to the separator, forming a symmetrical structure, wherein the separator, the bipolar plates, the gaskets, the diffusion layers, and the electrodes are stacked in a zero-gap manner within the cell frame, and wher
Resumen de: EP4647161A1
The present disclosure relates to a catalyst for decomposition of ammonia and a method for decomposition of ammonia.
Resumen de: EP4647396A1
There is described a hydrogen production system comprising: a gasification sub-system to produce a syngas stream from a biomass and/or refuse derived fuel feed stream; and a steam methane reformer (SMR) sub-system to produce an SMR syngas stream from a hydrocarbon feed, and to produce a low carbon hydrogen final product by integrating the syngas stream from the gasification sub-system and the SMR syngas stream.
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: EP4647534A1
Eine Plattenanordnung (1) eines Stapels elektrochemischer Zellen (2) umfasst ein zumindest teilweise als 3D-Druck-Element ausgebildetes Plattenelement (3), in welchem mehrere Schichten (6, 7, 8) parallel zueinander angeordnet sind, die jeweils durchbrochene, zur Durchleitung eines Fluids geeignete Strukturen aufweisen, wobei die Feinheit der Durchbrechungen (17) von Schicht (6, 7, 8) zu Schicht (6, 7, 8) variiert, und wobei ein Temperatursensor (19), der an ein Kabel (20) angeschlossen ist, welches durch mehrere der genannten Schichten (6, 7, 8) verläuft, an diejenige Schicht (8) grenzt, welche die feinsten Durchbrechungen (17) aufweist.
Resumen de: EP4647532A2
The present disclosure advantageously provides an improved cooling system for an electrochemical plant. The configurations disclosed herein provide advantages and improvements in a cooling system for the electrochemical plant. The cooling system advantageously cools multiple subsystems within the plant using dry coolers, thereby easing maintenance and access to various components within the plant, minimizing or reducing the amount of process piping within the plant used to cool the multiple subsystems, and reducing the complexity of the overall plant.
Resumen de: AU2024214359A1
Feedwater preparation system in a water electrolyser adapted to produce hydrogen and oxygen in one or more pressurised electrolyser stacks (2) using alkaline water and comprising a product gas conditioning system that has a safety valve out-blow material stream pipe (11) which is connected to a feedwater vessel (9), and/or has a depressurisation stream pipe (31) from a gas cleaning vessel which is connected to the feedwater vessel (9).
Resumen de: AU2024237545A1
A method for generating and treating a two-phase outflow from one or more pressurised electrolyser stacks which are adapted to electrolyse water into hydrogen and oxygen, whereby a pump supplies a catholytic fluid flow from one first gas liquid gravitational separator vessel to the electrolyser stacks and whereby a further pump supplies an anolytic fluid flow from one second gas liquid gravitational separator vessel to the electrolyser stacks, and whereby at least one cyclone type gas liquid separator receives combined outflows from the catholytic chambers and/or receives combined outflows from anolytic chambers respectively inside corresponding gravitational gas liquid separator vessel whereby further, the at least one cyclone type gas liquid separator separates the gas from the liquid along a generally horizontal cyclonic rotation axis inside the gas liquid gravitational separator vessel. An electrolyser system is also provided.
Nº publicación: FR3161913A1 07/11/2025
Solicitante:
COMMISSARIAT ENERGIE ATOMIQUE [FR]
Commissariat \u00E0 l'Energie Atomique et aux Energies Alternatives
Resumen de: FR3161913A1
Procédé de fabrication d’une céramique nanoarchitecturée poreuse (200) pour électrode de cellule d’électrolyseur (100), notamment pour électrode de cellule d’électrolyseur à haute température (également connue selon l’acronyme EHT), le procédé comprenant les étapes suivantes de : fourniture d’une résine comprenant un photoréactif polymérique, un solvant, par exemple un solvant organique, et une charge comportant au moins un précurseur minéral de la céramique, impression 3D de la résine selon un motif prédéterminé de sorte à former un squelette nanoarchitecturé poreux (300), par exemple sous forme de nid d’abeilles ou sous forme tétrakaidécahédrale, etfrittage du squelette nanoarchitecturé poreux (300) de sorte à obtenir une céramique nanoarchitecturée poreuse (200). Figure 4
BOPI
Sede Electrónica
