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902
resultados
Última actualización
04/11/2025 [06:56:00]
Resultados 25 a 50 de 902
Resumen de: US2025333865A1
An electrocatalyst useful for forming hydrogen from water by the hydrogen evolution reaction. The electrocatalyst includes a titanium (Ti)-including substrate, an array of titanium dioxide (TiO2) nanotubes (TNTs) disposed on the Ti-including substrate, and cobalt oxyphosphide (CoOP) nanostructures disposed on the surface of the TNTs. The TNTs are crystalline, as observed by powder X-ray diffraction (PXRD). The CoOP is amorphous by PXRD, and the CoOP nanostructures are substantially spherical and have a mean size of 75 to 400 nanometers (nm).
Resumen de: US2025333867A1
An electrode for electrolysis, including: a conductive substrate; and a catalyst layer disposed on a surface of the conductive substrate, in which at least one of the following conditions (I) and (II) is satisfied:(I) the catalyst layer contains a ruthenium element and an iridium element, and a crystallite size is 50 Å or more and 100 Å or less, the crystallite size being calculated from a peak observed in a 20 range of 27° or more and 28.5° or less in an XRD spectrum, the XRD spectrum being obtained by subjecting the catalyst layer to X-ray diffraction measurement and(II) the catalyst layer contains (i) a ruthenium element, (ii) an iridium element, and (iii) at least one kind of metal element M selected from the group consisting of W, Zn, Mn, Cu, Co, V, Ga, Ta, Ni, Fe, Mo, Nb and Zr, in the catalyst layer.
Resumen de: US2025333860A1
Electrolysis unit including a plurality of electrolysis cells held against one another along a stacking axis (Oy) between a first intermediate end plate and a second intermediate end plate, the first end plate including a first smooth bore and the second end plate including a second smooth bore. A tie rod including a body provided, at a first end, with a first head and, at a second end, with a second head, and first tensioning means for tensioning it. An electrolyzer includes the electrolysis unit.
Resumen de: US2025333316A1
The invention relates to a system and a method for generating ammonia, wherein, in an ammonia reactor, ammonia (NH3) is generated from a synthesis gas, wherein the synthesis gas contains hydrogen (H2) and nitrogen (N2), wherein a nitrogren supply flow and a first heat exchanger are used, which are designed in such a way that the hot ammonia (NH3) flowing out of the ammonia reactor heats the nitrogen used as synthesis gas in the nitrogen supply flow.
Resumen de: US2025333868A1
A separator (1) for water electrolysis comprising on at least one side thereof:—a surface area Smax,—a surface area Sc for contacting a surface of an electrode, and—a channel (10) for evacuating gas bubbles having a cross section Φc, characterized in that:—a ratio Sc/Smax is from 0.025 to 0.50, and—the cross section Φc is large enough for evacuating gas bubbles having a diameter from 5 to 50 μm.
Resumen de: AU2024256387A1
The invention relates to a method (100) for producing hydrogen (103), wherein feed water is subjected to electrolysis (10) with a cathode gas (101) being obtained, wherein the cathode gas (101) contains hydrogen, oxygen and some of the feed water, wherein a process gas flow (102) is formed using at least some of the cathode gas (101), wherein the process gas flow (102) contains at least some of the hydrogen, oxygen and feed water contained in the cathode gas (101), and wherein, in the process gas flow (102), at least some of the oxygen is subjected to an oxidative catalytic reaction with some of the hydrogen to form oxidation water, and wherein at least some of the feed water and the oxidation water in the process gas flow (102) are removed from the process gas flow (1029 in a water removal process. The catalytic reaction and the water removal process are carried out using one or more process units (41, 42), wherein the one process unit (41, 42) or each of the plurality of process units (41, 42) has a first adsorptive drying bed (4a), by means of which at least some of the feed water is removed from the process gas flow (102), a catalytic bed (4b) which is arranged downstream of the first drying bed (4a) and by means of which the catalytic reaction is carried out, and a second adsorptive drying bed (4c) which is arranged downstream of the catalytic bed and by means of which at least some of the oxidation water is removed from the process gas flow (102). The invention also pro
Resumen de: DE102024204053A1
Offenbart sind eine Festoxid-Elektrolysezelle und ein Verfahren zu deren Herstellung.
Resumen de: WO2025223592A1
It is an object of the invention to provide a reactor system based on an alkaline electrolysis system and an associated process for producing a synthetic fuel gas having a high proportion of oxygen from natural gas, biogas or exhaust gases from an internal combustion engine with hydrogen and oxygen formed in the electrolysis as fuel gas or synthesis gas. As a result of a high proportion of oxygen in the fuel gas of more than 20% by volume, the energy content of the new synthetic fuel gas is significantly higher than that of mixed gases already used in practice with a proportion of oxygen of less than 5% by volume. The arrangement of the reactor, including all additional systems, in a container allows largely standardized prefabrication on the part of the manufacturer of the reactor comprising the electrolysis system, including compliance with and installation of corresponding safety devices. The reactor system and the process for producing a fuel gas (25) from a carrier gas (11), e.g. natural gas (11), hydrogen, and oxygen utilize an alkaline low-voltage electrolysis system (3) which consists of a plurality of individual cells (4) within a reactor housing (2) and allows the fuel gas (25) to be formed in the individual cell (4) already during electrolysis. In spite of its high oxygen content, the fuel gas (25) is combustible but not explosive.
Resumen de: WO2025223593A1
The object of the invention is to use an electric generator system with an internal combustion engine in combination with a reactor system based on an alkaline electrolysis system for producing a fuel gas with a high oxygen content from a carrier gas, e.g. natural gas, and/or the exhaust gases of internal combustion engines and using the hydrogen and oxygen produced during the electrolysis process, and to provide a method for producing a fuel gas or synthesis gas with a high oxygen content by means of the reactor, wherein the energy input for producing the fuel gas is reduced and the water input is minimized compared to already known methods and systems. The system and the method for producing a fuel gas (25) from a carrier gas (11), e.g. natural gas (11), exhaust gases from internal combustion engines, hydrogen and oxygen, use an alkaline low-voltage electrolysis system (3), which consists of a plurality of individual cells (4) within a reactor housing (2) and allows the fuel gas (25) to be produced directly in the individual cell (4) during electrolysis. Despite its high oxygen content, the fuel gas (25) is combustible but not explosive.
Resumen de: WO2025223961A1
The invention at hand relates to an electrolysis cell, a process for the production of hydrogen by electrolysis and a cell stack comprising a multitude of the electrolysis cells, wherein each cell comprises an anode compartment, a cathode compartment and a separator, wherein a sealing member seals the electrolysis cell volume from the surrounding, the electrolysis cell electrolyte feed and/or electrolysis cell electrolyte outlet are located in the cell volume and comprise means for reducing stray currents.
Resumen de: WO2025223916A1
The invention relates to a method for producing hydrogen via steam electrolysis, the method comprising the following steps: - producing steam (112) by heating liquid water (204); and - electrolysing, in an electrolysis unit (102), at least a portion of the steam (112) to provide a first output stream (116) rich in hydrogen and a second output stream (118) rich in oxygen; characterised in that the steam is produced by at least one heat pump circuit reusing a portion of the heat from at least one of the output streams (116, 118) in order to vaporise the liquid water. The invention also relates to a system (400) implementing such a method.
Resumen de: AU2025248680A1
Abstract A method for producing a synthetic fuel from hydrogen and carbon dioxide comprises extracting hydrogen molecules from hydrogen compounds in a hydrogen feedstock to produce a hydrogen-containing fluid stream; extracting carbon dioxide molecules from a dilute gaseous mixture in a carbon dioxide feedstock to produce a carbon dioxide containing fluid stream; and processing the hydrogen and carbon dioxide 5 containing fluid streams to produce a synthetic fuel. At least some thermal energy and/or material used for at least one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams is obtained from thermal energy and/or material produced by another one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams. 10 Abstract A method for producing a synthetic fuel from hydrogen and carbon dioxide comprises extracting hydrogen molecules from hydrogen compounds in a hydrogen feedstock to produce a hydrogen-containing fluid stream; extracting carbon dioxide molecules from a dilute gaseous mixture in a carbon dioxide feedstock 5 to produce a carbon dioxide containing fluid stream; and processing the hydrogen and carbon dioxide containing fluid streams to produce a synthetic fuel. At least some thermal energy and/or material used for at least one of the steps of extracting hydrogen mole
Resumen de: EP4582589A1
The present application belongs to the technical field of electrolytic hydrogen production, and particularly relates to a direct air electrolytic hydrogen production system. The system comprises an energy supply module, an electrolytic hydrogen production module, an electrolyte recycling module and a moisture vapor self-trapping module, wherein the energy supply module is connected to the electrolytic hydrogen production module; the electrolytic hydrogen production module comprises an electrolyzer; and the electrolyte recycling module is connected to the electrolytic hydrogen production module and the moisture vapor self-trapping module separately. The system may realize direct air electrolytic hydrogen production, while its energy consumption for electrolysis is comparable to that of industrial pure water electrolysis for hydrogen production, without additional energy consumption for desalination/purification of impure water solutions or for harvesting moisture from the air. The system greatly broadens the range of hydrogen energy sources without time and space limitation, providing technical support for future distributed hydrogen energy arrangement.
Resumen de: AU2023408768A1
A method of hydrogen production includes providing a solution and immersing a device in the solution. The device includes a substrate having a surface, an array of conductive projections supported by the substrate and extending outward from the surface of the substrate, and a plurality of catalyst nanoparticles disposed over the array of conductive projections. The solution includes dissolved sodium chloride (NaCl).
Resumen de: EP4640922A1
Provided is a water electrolytic hydrogen production system configured by connecting a plurality of water electrolysis stacks in series, wherein the system is capable of ensuring sufficient insulation performance of each of the water electrolysis stacks. The water electrolytic hydrogen production system includes: a plurality of water electrolysis apparatuses, wherein each of the water electrolysis apparatuses includes: a water electrolysis stack configured to generate hydrogen and oxygen by electrolysis of water; a water supply portion configured to supply water to the water electrolysis stack; a water intake portion configured to take water into the water supply portion from outside; a hydrogen release portion configured to release hydrogen generated in the water electrolysis stack to outside; and an oxygen release portion configured to release oxygen generated in the water electrolysis stack to outside, the water electrolysis stacks of the plurality of water electrolysis apparatuses are electrically connected to each other in series, and an insulation member is disposed at a connecting portion of piping for supplying or releasing a fluid with outside of the apparatus, the piping including at least the water intake portion, the hydrogen release portion, and the oxygen release portion of each of the plurality of water electrolysis apparatuses.
Resumen de: WO2024133496A1
The subject matter of the invention is essentially that of obtaining an indirect optimal thermal coupling between a nuclear reactor and a production unit for producing hydrogen by high-temperature electrolysis by means of a suitably chosen draw-off tap downstream of the high-pressure body of the Rankine cycle turbine of the nuclear reactor, which will transfer the heat thus drawn off by means of a closed loop between an intermediate heat exchanger and a coupling steam generator to liquid water supplied to the production unit in order to inject steam at a high temperature required to perform the electrolysis. This indirect heat input may be carried out continuously or at a decreasing rate until there is enough heat produced by the electrolysis reaction.
Resumen de: WO2024130276A1
The invention relates to a rectifier arrangement for hydrogen electrolysis, comprising a transformer (1) with a primary winding (2) for connecting an input alternating voltage and a secondary winding (3) for providing an output alternating voltage, and comprising a rectifier (4) connected to the secondary winding (3) for generating an output direct current IDC and an output direct voltage UDC, wherein at the primary winding (2) of the transformer (1) a number N > 1 of winding taps (5) are provided, and a load stage switch (6) connected to a controller (7) is provided which is designed for switching the winding taps (5) without interruption such that the transformation ratio of the transformer (1) can be switched via the controller (7) in N stages.
Resumen de: CN120476486A
A solid oxide cell stack has a combined flow distributor and contact enabler made of a pressed metal foil with diversion structures and contact regions between interconnect layers and cell layers in the stack.
Resumen de: WO2024132579A1
A process for producing a synthesis gas product comprising hydrogen from an endothermic cracking reaction of an ammonia feedstock stream, comprising the following steps: - Providing an ammonia feedstock stream, - Performing a catalytic conversion by catalytically converting the ammonia feedstock stream by cracking endothermically said ammonia feedstock stream into a synthesis gas product comprising hydrogen, - Performing heat exchanges step by performing heat exchanges between the synthesis gas product and the catalytic conversion of the ammonia feedstock stream, said heat exchanges step comprising the following steps: • Discharging the synthesis gas product in a synthesis gas product circulation duct, said duct being arranged for the heat exchanges between the discharged synthesis gas product and the catalytic conversion of the ammonia feedstock stream, • Recovering heat from the discharged synthesis gas product, • Directing the recovered heat to the catalytic conversion of the ammonia feedstock stream.
Resumen de: CN120418995A
The invention relates to an electrochemical reactor (1), in particular a redox flow cell, a fuel cell, an electrolytic cell or an electrosynthesis cell, comprising a stack (Z) consisting of a plurality of cells (2) which are separated from each other by at least one bipolar plate (3) and are stacked in a stacking direction (R), wherein the cells (2) each have two electrodes (5, 6) and a separator (10) arranged between the two electrodes (5, 6), and wherein the at least one bipolar plate (3) is flexible. In order to be able to increase mass transfer and material distribution with low construction and equipment investment and low material load, an oscillator (13) which excites at least one bipolar plate (3) to generate oscillations is integrated in the bipolar plate (3).
Resumen de: CN120476486A
A solid oxide cell stack has a combined flow distributor and contact enabler made of a pressed metal foil with diversion structures and contact regions between interconnect layers and cell layers in the stack.
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: WO2024190982A1
Disclosed are a catalyst for the dehydrogenation of ammonia, a manufacturing method therefor, and a method for producing hydrogen using same. The disclosed catalyst for the dehydrogenation of ammonia comprises clay and an alkali metal and ruthenium supported on the clay.
Resumen de: CN120391000A
An electrochemical cell system (100) comprising: an electrochemical cell arrangement (10); a control unit (20) configured to operate the electrochemical cell arrangement (10) only as an electrolytic cell or as a fuel cell; a heating unit (40) located outside the electrochemical cell arrangement (10), the heating unit being thermally coupled to the electrochemical cell arrangement (10) and the heating unit being configured to alternately store heat from the electrochemical cell arrangement (10) to the heating unit (40) and supply heat from the heating unit (40) to the electrochemical cell arrangement (10); and a transfer arrangement (30) configured to alternately transfer heat from the electrochemical cell arrangement (10) to the heating unit (40) and from the heating unit (40) to the electrochemical cell arrangement (10).
Nº publicación: CN120844114A 28/10/2025
Solicitante:
苏州莒纳新材料科技有限公司
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.
BOPI
Sede Electrónica
