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1088
resultados
Última actualización
24/08/2026 [07:24:00]
Resultados 25 a 50 de 1088
Resumen de: EP4741052A1
The present disclosure relates to an oxygen evolution reaction(OER) oxide catalyst for anion exchange membrane(MEM) water electrolysis doped with various metal atoms using a coprecipitation method, and a preparation method thereof.
Resumen de: WO2025033904A1
The present invention relates to an electrode and a method for manufacturing same, the electrode comprising: a nickel-containing metal substrate; a first sol-gel coating layer formed on at least one surface of the metal substrate; and a second sol-gel coating layer formed on the first sol-gel layer, wherein the first sol-gel coating layer and the second sol-gel coating layer each independently include nickel and iron. According to the present invention, the provided electrode for anion exchange membrane water electrolysis can implement improved electrochemical performance and has excellent durability.
Resumen de: EP4793410A2
0001 To provide a membrane electrode assembly which is excellent in strength and is capable of reducing the electrolysis voltage when applied to a water electrolysis apparatus, and such a water electrolysis apparatus. 0002 The membrane electrode assembly of the present invention is a membrane electrode assembly for use in a water electrolysis apparatus, comprising an anode having a catalyst layer, a cathode having a catalyst layer, and a polymer electrolyte membrane disposed between the anode and the cathode, wherein the polymer electrolyte membrane comprises a fluorinated polymer having ion exchange groups, and a woven fabric, the aperture ratio of the woven fabric is at least 50%, the denier number of warp yarns and the denier number of weft yarns, constituting the woven fabric, are each independently at least 2, a relation of Y≦240X-170 is satisfied, where the membrane thickness of the polymer electrolyte membrane is Y µm, and the ion exchange capacity of the fluorinated polymer is X meq/g dry resin, the membrane thickness Y of the polymer electrolyte membrane is at least 20 µm and at most 150 µm, and the density of the warp yarns and weft yarns constituting the woven fabric is at least 19.7 yarns/cm (50 yarns/inch).
Resumen de: WO2025076572A1
The invention relates to an electrolytic reaction system (1) for producing process gases in the form of gaseous hydrogen and oxygen, comprising at least three electrode assemblies (2), each of which comprise a plurality of hollow cylindrical electrodes that are arranged coaxially to one another and are positioned one inside the other. At least three electrode assemblies (2) are uniformly distributed about a common central vertical axis (4), and a hollow cylindrical container wall (5) for receiving an electrolyte is provided for each electrode assembly (2). A cover element (7) is supported on the upper end face (6) of each of the container walls (5), and the cover element (7) has through-openings (8) which run in the vertical direction and which are designed to discharge process gases produced within the container walls (5). A collecting hood (9) is provided on the cover element (7) in order to combine process gases exiting the individual through-openings (8). An electromagnetic coil (10) which is designed in the form of a ring and comprises a central air core (11) is received by the cover element (7) or is mounted on the cover element (7) and is aligned such that the central vertical axis (4) of the at least three electrode assemblies (2) passes through the central air core (11).
Resumen de: WO2025078333A1
The present invention relates to an electrode (100) for electrolysis of electrolyte, said electrode comprising: first porous layer (102) permeable to electrolyte and gases produced by the decomposition of electrolyte; a second porous layer (104) permeable to electrolyte and gases produced by the decomposition of electrolyte, said second porous layer (104) being arranged adjacent to the first porous layer (102), wherein the first porous layer (102) comprises Nickel.
Resumen de: EP4793391A1
0001 According to the present invention, an uncoated austenitic steel sheet for an alkaline water electrolysis separator is provided, comprising, by wt%: C: more than 0% and 0.04% or less, Si: more than 0% and 0.4% or less, Mn: more than 0% and 0.5% or less, Cr: more than 0% and 2.0% or less, Ni: 33% to 40%, Co: more than 0% and 4.0% or less, the balance of Fe and other inevitable impurities, wherein a value of the following Formula (1) is 0.83 or less, a surface roughness Ra value is 0.07 µm to 0.25 µm, and corrosion resistance is excellent in an alkaline environment. 9.0 − 0.2495 × Ni + 0.9 × Cr − 0.005 × Co
(wherein Ni, Cr and Co represent the content (wt%) of each element).
Resumen de: WO2025048510A1
The present invention relates to a separator in which an anode catalyst layer is coated on one surface of a porous substrate, and an electrochemical cell comprising same, the separator allowing ions to smoothly move through pores of the porous substrate and exhibiting low overpotential due to having the anode catalyst layer coated on one surface thereof.
Resumen de: EP4792933A1
0001 A purpose of the present invention is to provide an ammonia decomposition catalyst device with which a conversion of ammonia (NH<3>) can be improved. An ammonia decomposition catalyst device 100 for producing hydrogen (H<2>) through decomposition of ammonia (NH<3>) has a gas-flow upstream-side region 100a and a gas-flow downstream-side region 100b, in which a base density of the gas-flow downstream-side region 100b is a higher than that of the gas-flow upstream-side region 100a.
Resumen de: WO2025033986A1
The present invention relates to a method for preparing a nickel-based phosphide catalyst for an oxygen evolution reaction of an alkaline water electrolysis anode using sodium hypophosphite (NaH2PO2) substitution and pyrolysis.
Resumen de: WO2025027031A1
The invention provides a process for producing hydrogen by thermal reforming of ammonia in an apparatus comprising an ammonia cracking reactor with a catalyst chamber and a staged combustion unit, wherein the catalyst chamber of the ammonia cracking reactor is heated indirectly by heat exchange with the hot flue gases from the staged combustion unit, comprising the steps of: a) incomplete combustion of a fuel comprising ammonia in the first stage of the staged combustion unit to generate a flue gas stream of elevated temperature T1 in the range of 750 to 2000°C, preferably in the range of 1200 to 2000°C; b) complete combustion of the fuel comprising ammonia in the second stage of the staged combustion unit to generate a flue gas stream of a temperature T3 that is less than T1; c) exchanging heat from the flue gas provided in step b) with the ammonia cracking reactor to raise the temperature in the catalyst chamber to a catalytic cracking temperature T2 in the range of 400 to 1000°C, more preferably in the range of 600 to 800°C; d) subjecting an ammonia stream in the heated ammonia cracking reactor of step c) to a catalytic ammonia-cracking step to yield a thermally cracked stream comprising hydrogen, and e) separating the thermally cracked stream into a reject gas stream and an enriched hydrogen stream and withdrawing the enriched hydrogen stream, wherein T3 is at least 50°C above T2 up to a maximum of 1600°C, and wherein T3 is at least 50°C below T1, and wherein the f
Resumen de: JP2026527456A
0001 アンモニアから水素リッチガスを生成するための水素生成装置であって、内壁と、内部容積を画定する外壁とを備える第一のチャンバであって、前記第一のチャンバは、前記内壁と前記外壁との間に配置されたアンモニア分解触媒を含み、前記第一のチャンバは、１つ以上のアンモニアガス入口と１つ以上の未処理分解ガス出口とを有し、前記１つ以上のアンモニアガス入口及び前記１つ以上の未処理分解ガス出口は、前記アンモニアが前記１つ以上のアンモニアガス入口から前記１つ以上の未処理分解ガス出口まで前記第一のチャンバを通って流れ、前記アンモニア分解触媒に接触するように配置される、第一のチャンバと、前記アンモニア分解触媒を加熱するための１つ以上の熱源と、を備え、前記第一のチャンバは、１つ以上のフィンを有し、前記１つ以上のフィンは、前記第一のチャンバの前記内壁と前記外壁との間に配置される、装置。 【選択図】図１
Resumen de: WO2025032310A1
The present invention relates to a methanation method comprising providing an electrolyser system, the electrolyser system (20) comprising an electrolyser (10) that has at least one electrolyser cell (11), at least one fuel input (14) through which fuel enters the electrolyser (10) and at least one offgas output (46) from which offgas exits the electrolyser (10), the method further comprising supplying fuel to the at least one fuel inlet, the fuel comprising at least water and either or both carbon dioxide and carbon monoxide, operating the electrolyser system (20) by powering the electrolyser cell (11) with electricity to electrolyse the fuel in the at least one electrolyser cell (11) such that a part of the water splits into hydrogen and oxygen, wherein the electrolyser (10) is operated at a temperature at or in excess of 150 degrees C, and methanation occurs to the carbon dioxide and/or carbon monoxide in the electrolyser (10). The gas mixture can be released from the at least one offgas output (46) and then passed through a gas separation process to separate at least the methane from the gas mixture. The present invention also relates to an electrolyser system (20) configured to operate using the above method. The electrolyser system (20) comprises a fuel fluid flow path connecting a fuel inlet and a fuel outlet. The method may comprise providing to the fuel inlet a fuel gas containing water and a source of carbon selected from one or more of CO and CO2, operating the ele
Resumen de: US20260234819A1
Provided is an electrolysis system including an electrolysis module; a water vapor supply system that supplies water vapor to a hydrogen electrode; a hydrogen recovery system that recovers hydrogen-enriched water vapor; an air supply system that supplies air to an oxygen electrode; an oxygen recovery system that recovers exhaust air; a hydrogen-enriched water vapor release system that releases hydrogen-enriched water vapor from the hydrogen recovery system into the atmosphere; an exhaust air release system that releases exhaust air from the oxygen recovery system into the atmosphere; a hydrogen-enriched water vapor discharge valve disposed in the hydrogen-enriched water vapor discharge system; and an exhaust air discharge valve disposed in the exhaust air discharge system, wherein the opening degrees of the hydrogen-enriched water vapor discharge valve and the exhaust air discharge valve are controlled to be adjustable when the electrolytic module is stopped.
Resumen de: US20260234818A1
0000 Systems, methods, and devices for enhancing catalyst layer performance in electrolytic cells are described. The enhanced catalyst layers include a catalyst mixture having catalyst particles and corrosion-resistant, conductive nanoparticles to optimize interfacial contact and reduce in-plane discontinuities even at low areal loadings of catalyst particles. For example, a catalyst layer includes a matrix with a homogenous mixture of catalyst particles and corrosion-resistant, conductive nanoparticles. The catalyst particles are configured to promote water electrolysis. The catalyst particles include iridium and have a high surface area. The corrosion-resistant, conductive nanoparticles are configured to resist oxidation, to reduce packing discontinuities of the catalyst particles, and to provide an electrically conductive bridge between the catalyst particles. The matrix is configured to support the catalyst particles and the corrosion-resistant, conductive nanoparticles.
Resumen de: AU2025215616A1
A hydrogen production facility is disclosed, comprising: a plurality of electrolysis systems to electrolyze water using lye; and a mutualized lye circulation system coupled with the plurality of electrolysis systems to circulate the lye among the plurality of electrolysis systems to facilitate electrolyzing the water, the lye circulation system comprising one or more pumps, wherein a number of the one or more pumps is less than a number of electrolysis systems of the plurality of electrolysis systems. A hydrogen production facility comprising first and second modular structures is also disclosed.
Resumen de: AU2025216381A1
The disclosure refers to a computer-implemented method for heating up electrolytic units. The method comprises determining whether some electrolytic units of an electrolysis plant require heating up to have them at a temperature within a predetermined range in a future time span; controlling the electrolytic units to power them up based on first electric power available in a current time span; heating up the electrolytic units to have them at the temperature within the predetermined range in the at least one future time span; and repeating the steps such that the heating up is determined for one or more time spans that occur at the same time and/or later than the future time span, thereby repeatedly controlling the temperature of the electrolytic units to be at a temperature within the predetermined range in the future time spans.
Resumen de: AU2025216225A1
A method is disclosed for producing an electrode (4) having a noble metal catalyst for alkaline water electrolysis. The method comprises: (S1) providing the electrode substrate (1); (S2) providing a matrix material (2) and a catalyst material (3) as starting materials for the coating; (S3) mixing the matrix material (2) and the catalyst material (3); and, (S4) coating the substrate (1) with the mixture of matrix material (2) and catalyst material (3) by means of high-velocity oxygen fuel spraying (HVOF). A correspondingly produced electrode (4), an electrochemical cell (10) comprising said electrode, and an electrolyser (20) are also specified.
Resumen de: US20260234673A1
A composition that produces hydrogen includes a nanoparticle or plurality of nanoparticles; an external source of electrons such as an electrogenic bacterium or a plurality of electrogenic bacteria and a carbon source; and an aqueous medium. The nanoparticles and the aqueous medium are combined in a mixture and, upon exposure to electromagnetic radiation with a wavelength in the absorption profile of the nanoparticles, the nanoparticles generate an electron that can reduce a proton in the aqueous medium. The source of electrons is capable of reducing the nanoparticles. The nanoparticles may comprise cadmium chalcogenide or water-soluble cadmium chalcogenide quantum dots. The nanoparticles may also comprise core-shell nanoparticles, nanorods; dot-in rods, Zn-based II-VI core quantum dots, and nanoplatelets including core-crown and core-shell nanoplatelets. The electrogenic bacterium or bacteria may comprise Shewanella oneidensis, a Geobacter species or any bacterium capable of extracellular electron transfer.
Resumen de: US20260234822A1
0000 A control unit for a Power-to-Hydrogen (PtH) plant is provided. The control unit includes at least one model and is configured to: calculate maximum efficiency point tracking of the PtH plant by solving an objective function having a predetermined hydrogen production rate of the PtH plant or a predetermined amount of energy input to the PtH plant using the at least one model, wherein the control unit receives measured parameters indicative of status of components of the PtH plant as an input to the at least one model; determine one or more set points for a coordinated operation of the components of the PtH plant based on a solution obtained by solving the objective function; and provide the one or more set points to one or more of the components of the PtH plant to operate the PtH at the maximum efficiency point.
Resumen de: US20260235020A1
0000 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: US20260234820A1
0000 The present disclosure relates to systems and methods for controlling hydrogen stack power and load. The systems include at least one hydrogen stack, a pressure sensor, and a controller, wherein the controller is operable to increase or decrease the power to the at least one hydrogen stack in response to a change in pressure. The methods include generating hydrogen using at least one hydrogen stack, measuring the pressure of the generated hydrogen, and increasing or decreasing the power supplied to the at least one hydrogen stack in response to an increase or decrease in the pressure.
Resumen de: US20260234024A1
A process for process for preparing a metal hydroxide comprising at least one metal chosen from nickel, cobalt, manganese, lithium and aluminum. The process comprises: reacting a metal sulfate and/or a metal nitrate comprising at least one metal chosen from nickel, cobalt, manganese, lithium and aluminum with a base chosen from LiOH, NaOH, KOH, RbOH, CsOH, Mg(OH)2, Ca(OH)2, Sr(OH)2, or Ba(OH)2 and optionally a chelating agent in order to obtain a solid comprising the metal hydroxide and a liquid comprising at least one of Li2SO4 Na2SO4, K2SO4, Rb2SO4, Cs2SO4, MgSO4, CaSO4, SrSO4, BaSO4, LiNO3 NaNO3, KNO3, RbNO3, CsNO3, Mg(NO3)2, Ca(NO3)2, Sr(NO3)2 and Ba(NO3)2,separating the liquid and the solid from one another to obtain the metal hydroxide;submitting the liquid comprising at least one of Li2SO4 Na2SO4, K2SO4, Rb2SO4, Cs2SO4, MgSO4, CaSO4, SrSO4, BaSO4, LiNO3 NaNO3, KNO3, RbNO3, CsNO3, MgNO3, CaNO3, SrNO3 and BaNO3 to an electromembrane process for converting the least one of Li2SO4, Na2SO4, K2SO4, Rb2SO4, Cs2SO4, MgSO4, CaSO4, SrSO4, BaSO4, LiNO3 NaNO3, K2NO3, RbNO3, CsNO3, Mg(NO3)2, Ca(NO3)2, Sr(NO3)2 and Ba(NO3)2 into at least one of LiOH, NaOH, KOH, RbOH, CsOH, Mg(OH)2, Ca(OH)2, Sr(OH)2, and Ba(OH)2; andreusing the at least one of LiOH, NaOH, KOH, RbOH, CsOH, Mg(OH)2, Ca(OH)2, Sr(OH)2, and Ba(OH)2 obtained by the electromembrane process for reacting with the metal sulfate and/or the metal nitrate.
Resumen de: US20260235084A1
0000 According to aspects of the disclosed subject matter, methods and apparatuses are provided to reduce combustion time and/or combustion temperature in an internal combustion engine. In an exemplary embodiment, intake air and oxygen-rich gas are introduced upstream of a turbofan, wherein the amount of oxygen rich gas provided to the internal combustion engine is controlled in a manner that is proportional to the engine speed.
Resumen de: US20260233204A1
0000 A catalyst for decomposition of ammonia and a method for decomposition of ammonia using the catalyst. The catalyst includes a carrier and a catalytically active components supported on the carrier, the catalytically active components including i) ruthenium (Ru) as a first metal; ii) a second metal; and iii) a third metal, wherein each of the second metal and the third metal is independently one or more selected from the group consisting of lanthanum (La), cerium (Ce), aluminum (Al), and zirconium (Zr), the amount of the first metal ruthenium is 0.1 to 1 part by weight, based on 100 parts by weight of the total catalyst, the porosity is 30 to 60%, and the median value of pore diameter is 50 to 200 μm.
Nº publicación: US20260233146A1 13/08/2026
Solicitante:
ARKEMA FRANCE [FR]
ARKEMA FRANCE
Resumen de: US20260233146A1
0000 The present invention relates to a process for purifying a hydrogen stream polluted with water, oxygen and possibly nitrogen, said process involving placing the hydrogen stream to be purified in contact with a zeolite-based adsorbent material comprising at least one metal chosen from the metals of columns 3 to 12 of the Periodic Table of the Elements, in zero-valent metal form, or in oxidized or reduced form, and recovering the purified hydrogen stream. 0000 The invention also relates to the use of a zeolite-based adsorbent material comprising at least one metal from columns 3 to 12 of the Periodic Table of the Elements for the purification of hydrogen, and to the use of the hydrogen thus purified in industrial processes.
BOPI
Sede Electrónica
