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Procédé de préparation d’une électrode activée électrochimiquement à base de MoS2 fluoré pour des réactions de réduction électrochimique

Resumen de: FR3162052A1

Procédé de préparation d’une électrode activée électrochimiquement pour des réactions de réduction électrochimique, ladite électrode comprenant au moins un matériau catalytique à base d’au moins un métal du groupe VIB fluoré, ledit procédé consiste à réaliser un traitement électrochimique oxydatif à une électrode comprenant au moins un matériau catalytique à base d’au moins un métal du groupe VIB fluoré.

Procédé de préparation d’une couche active d’électrode à base de MoS2 fluoré pour des réactions de réduction électrochimique

Resumen de: FR3162008A1

Procédé de préparation d’un matériau catalytique d’une électrode pour des réactions de réduction électrochimique, ledit matériau catalytique comprenant une phase active à base d’au moins un métal du groupe VIB et de fluor. Ledit procédé consiste en la mise en contact d’un matériau solide à base d’au moins un métal du groupe VIB sulfuré avec un gaz comprenant au moins du difluor, à une température comprise entre -50°C et 150°C, une durée comprise entre 15 secondes et 120 minutes, une concentration en difluor dans le gaz comprise entre 0,1 et 100% volume par rapport au volume total dudit gaz, une pression comprise 0,001 et 0,2 MPa, une P.P.H comprise entre 0,01 et 200 h-1.

A TRANSITION METAL-DOPED IRIDIUM-BASED COMPOSITE CATALYST AND ITS PREPARATION AND USE

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.

HYDROGEN ECOSYSTEM FOR UPSTREAM OIL PRODUCTION

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.

Green Hydrogen for the Generation of Electricity and Other Uses

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.

GENERATING HYDROGEN FROM REFINERY WASTE AND CONSUMER WASTE PLASTIC FOR SUPPLY TO HYDROPROCESSING

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.

Catalysts and processes for the direct production of liquid fuels from carbon dioxide and hydrogen

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.

PRODUCTION APPARATUS AND METHOD FOR HIGH PURITY HYDROGEN

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.

PHOTOCATALYTIC SPLITTING OF WATER

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.

HYDROPROCESSING FOR PRODUCING CLEAN FUELS AND CHEMICALS WITH REDUCED CARBON FOOTPRINT

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.

CATALYST FOR AMMONIA DECOMPOSITION REACTION, METHOD FOR PREPARING SAME, AND METHOD FOR PRODUCING HYDROGEN BY USING SAME

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.

METHOD OF PRODUCING A HYDROGEN STREAM AND AN OXYGEN STREAM AND PASSING THE HYDROGEN STREAM AND THE OXYGEN STREAM TO A REVERSE WATER-GAS SHIFT REACTOR

Resumen de: AU2024285985A1

A method of producing a hydrogen stream and an oxygen stream and passing the hydrogen stream and the oxygen stream to a reverse water-gas shift reactor is described, the method comprising: providing a water stream to an electrolysis system configured to form: a hydrogen stream at a first pressure, and an oxygen stream at a second pressure; passing the hydrogen stream, a carbon dioxide stream, and the oxygen stream to the reverse water-gas shift reactor, wherein the first pressure is lower than the second pressure.

Adhesive-fixed Electrolysis Module

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

OXYGEN EVOLUTION REACTION CATALYST AND METHOD FOR ITS PREPARATION

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.

ELECTROLYTIC METHOD, ELECTROLYSIS CELL, AND SYSTEM

Resumen de: AU2024249829A1

The invention relates to an electrolytic method for producing carbon dioxide, having the following steps: a. anodically oxidizing hydrogen gas within an electrolysis cell, an acidic oxidation product being obtained; b. reacting the acidic oxidation product with an aqueous electrolyte solution within the electrolysis cell, an acidic aqueous solution being obtained; c. cathodically reducing water within the electrolysis cell, an alkaline aqueous solution and hydrogen gas being obtained; d. reacting the alkaline aqueous solution outside of the electrolysis cell with a gas which contains carbon dioxide, wherein the gas is air in particular, in order to obtain a carbonate-containing aqueous solution; and e. reacting the carbonate-containing alkaline aqueous solution with the acidic aqueous solution outside of the electrolysis cell in order to obtain dissolved carbon dioxide gas.

HYDROGEN ECOSYSTEM FOR UPSTREAM OIL PRODUCTION

Resumen de: WO2025235123A2

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.

WATER SPLITTING SYSTEM AND METHOD

Resumen de: WO2025235613A1

The metal organic framework (MOF)-based light-driven water-splitting system 100 includes a water oxidation catalyst 102 coupled with a MOF substance 104. In a specific example, the MOF substance 104 may include MIL-142. Fe3O nodes of the MIL-142 may absorb visible light, leading to charge separation. The water oxidation catalyst 104 includes a trans-Ru(R-tpy)(Qc)(H2O)+ scaffold. The MOF substance 104 may be coupled to a conducting support 106.

ELECTRICALLY ISOLATED ELECTROCHEMICAL CELL AND METHOD OF MANUFACTURING THE SAME

Resumen de: WO2025235885A1

The present application relates to components for use in an electrolysis cell and/or stack comprising features, geometry, and materials to overcome prior art limitations related to cell electrical isolation, fluid sealing, and high speed manufacturing. The electrolysis cell comprises a membrane, an anode, a cathode, an anode flow field, a cathode flow field, and a bipolar plate assembly comprising an embedded hydrogen seal and both conductive and non-conductive areas. The components are cut using two-dimensional patterns from substantially flat raw materials capable of being sourced in roll form. These substantially two-dimensional components are processed to create a fully unitized, three- dimensional electrolysis cell with a hermetically sealed cathode chamber.

ALUMINUM-WATER-AIR-REACTOR (AWAR) DEVICES AND SYSTEMS, AND METHODS OF USE THEREOF

Resumen de: WO2025235887A1

Provided herein are methods and systems for collecting energy from aluminum-water reactions and/or powering processes using energy collected from aluminum-water reactions. The methods and systems described herein substantially convert the embodied energy of aluminum to usable energy, in part, by combusting hydrogen produced by the aluminum-water reaction in the generation of superheated steam.

GAS PRODUCTION SYSTEMS

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.

METHOD FOR PRODUCING CATALYST

Resumen de: WO2025234874A1

The invention relates to a method for producing a catalyst, in particular for use in water electrolysis. The catalyst prepared from nickel, iron and/or cobalt precursors via hydrothermal synthesis is utilised in the membrane electrode assembly for anion exchange membrane water electrolysis.

SYSTEM AND METHOD FOR USING BOILER HOT FLUE GAS TO DECOMPOSE HYDROGEN IODIDE

Resumen de: WO2025232928A1

Disclosed in the present invention are a system and method for using boiler hot flue gas to decompose hydrogen iodide. The system comprises a mixed liquid container, a mixed liquid pump, a pump outlet regulating valve, a boiler high-temperature flue gas zone and a temperature control valve, wherein an outlet of the mixed liquid container is connected to an inlet of the mixed liquid pump; an outlet of the mixed liquid pump is connected to an inlet of the pump outlet regulating valve; an outlet of the pump outlet regulating valve is connected to an inlet of the boiler high-temperature flue gas zone; and an outlet of the boiler high-temperature flue gas zone is connected to an inlet of the temperature control valve. In the present invention, heat is obtained from flue gas from a power station boiler; it is only necessary to place a hydrogen iodide heating device in a high-temperature zone of a furnace of the boiler, and two sides of the hydrogen iodide heating device are at low pressure, thereby greatly improving the safety; in addition, obtaining heat directly from the flue gas is more economical than obtaining heat via steam and electric energy.

LOW-HYDROGEN-PERMEABILITY PROTON EXCHANGE MEMBRANE, AND PREPARATION METHOD THEREFOR AND USE THEREOF

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.

MEMBRANE-FREE CHEMICAL-LOOPING CYCLIC WATER ELECTROLYSIS HYDROGEN PRODUCTION DEVICE AND METHOD BASED ON INTRINSIC SAFETY

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

REACTOR AND METHOD FOR HYDROGEN PRODUCTION FROM WASTEWATER

Nº publicación: WO2025232351A1 13/11/2025

Solicitante:

HUANENG CLEAN ENERGY RES INSTITUTE [CN]
HUANENG ZHANGYE ENERGY CO LTD [CN]
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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.