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640
resultados
Última actualización
24/04/2025 [07:00:00]
Resumen de: GB2634787A
A method and associated apparatus 50 for the production of gas via electrolysis of water. The method comprises: performing electrolysis of water within one or more electrolysis cells (figure 1,2), to produce a mixture comprising a liquid and at least one of hydrogen and oxygen. The gas(es) and liquid are separated, where the separator 53 operates at a higher pressure than the pressure at which the one or more electrolysis cells operate. An additional pressurising step 55 can be performed on the gaseous mixture before separation. The gas output from the separator may be supplied to a compressor. A energy harvesting device may be provided as a part of a depressuring system 56.
Resumen de: EP4541944A1
A proton exchange membrane (10) for water electrolysis comprising a proton exchange substrate (12) coated on one side with a titanium oxide film (14), the titanium oxide film having a thickness (t<sub>14</sub>) equal to or smaller than 100 nm. A method for making a proton exchange membrane for water electrolysis.
Resumen de: GB2634846A
A hydrogen production facility 10 is described. The hydrogen production facility includes one or more electrolyser stacks 12 to electrolyze water. A hydrogen-aqueous solution mixture 12a and an oxygen-aqueous solution mixture 12b are generated, where the one or more electrolyser stacks comprise a plurality of membranes. The facility also includes a hydrogen separator to produce a flow of hydrogen from the hydrogen-aqueous solution mixture and an oxygen separator to produce a flow of oxygen from the oxygen-aqueous solution mixture. The hydrogen separator 2 comprises a hydrogen gas-liquid separation device and a hydrogen coalescing device 16. The oxygen separator 4 comprises an oxygen gas-liquid separation device and an oxygen coalescing device 18. The hydrogen separator 2 and the oxygen separator 4 can be coupled using a pressure balancing line 24 to prevent or reduce a pressure differential across the plurality of membranes.
Resumen de: GB2634845A
A hydrogen production facility 10 and associated method of use is disclosed, comprising a plurality of electrolyser stacks 12. The stacks 12 are for electrolyzing water, generating a hydrogen-aqueous solution mixture. A hydrogen separator 2 arrangement is described for producing a flow of hydrogen from the hydrogen-aqueous solution mixture. The hydrogen separator 2 arrangement comprises a plurality of first stage hydrogen collector separators 20,22, where the first stage hydrogen collector separators are fluidly coupled to a respective sub-set of the plurality of electrolyser stacks. The plurality of first stage hydrogen collector separators 20,22 are also fluidly coupled to a downstream hydrogen buffer vessel 28. The hydrogen separator 2 arrangement may comprise one or more hydrogen coalescing devices 16. A pressure balancing line 24 can also be provided between oxygen 22 and hydrogen separators 20 - it may also extend between hydrogen 28 and oxygen buffer 30 vessels.
Resumen de: EP4541941A1
To provide a technique allowing reduction in the amount of usage of a catalyst material while alleviating performance degradation of a gas diffusion layer. A cell as an electrode structure comprises an electrolyte membrane (41), a gas diffusion layer (43), and a catalyst layer (45). The gas diffusion layer (43) is positioned on one side of the electrolyte membrane (41). The gas diffusion layer (43) is a porous layer. The catalyst layer (45) is positioned between the electrolyte membrane (41) and the gas diffusion layer (43). The catalyst layer (45) is formed from a catalyst material. A penetration part (433) formed in the gas diffusion layer (43) by the penetration the catalyst material having a thickness of 1 µm or less.
Resumen de: EP4541945A1
The invention relates to Device for electrochemical reversible dihydrogen storage (1), said device comprising: a sealed chamber (2) intended to receive an electrolytic media (3) and gaseous dihydrogen (4), connection means (5) suitable for connecting the seal chamber to a gas circuit (6) and at least one first electrode (7), and at least one second electrode (8), arranged within the sealed chamber. The at least one second electrode is suitable to oxidize dissolved gaseous dihydrogen, in the electrolytic media, and form protons and to reduce protons and form gaseous dihydrogen according to formula 1: H2 ↔ 2H<+> + 2e<->, formula 1. The at least one first electrode comprises at least one redox couple M
Resumen de: WO2023242385A1
The invention relates to a method for producing hydrogen with adjustment of the power of a compressor according to the rate of production of an electrolyser, said method comprising the following steps: - a) electrolysing using an electrolyser producing hydrogen at a flow rate of between 0.5 and 5 standard m3/h at an outlet pressure of between 1 and 50 bar; - b) compressing the hydrogen using an electrochemical compressor. The method also comprises a step of correcting the power supply current of the electrochemical compressor with respect to a target pressure value.
Resumen de: AU2023293861A1
The invention relates to an electrolysis system (21) comprising: at least one electrolysis cell (01); and a cathode-side water circuit (07) having a hydrogen separator (05); and an anode-side water circuit (06) having an oxygen separator (04); and an equalisation connection (22) which leads, coming from a cathode-side water connection (15), to the anode-side water circuit (06) via a pump (13) and an ion exchanger (12) via a node point (23) and an operating line (24); and an idle line (25) which (25) branches off upstream of the control line (24) and leads to the cathode-side gas connection (17).
Resumen de: CN119233941A
A process for cracking ammonia to form hydrogen is described, the process comprising the steps of: (i) passing the ammonia through one or more catalyst-containing tubes in a furnace to crack the ammonia and form hydrogen wherein the one or more tubes are heated by combustion of a fuel gas mixture to form a flue gas containing nitrogen oxides, the invention relates to a method for producing ammonium nitrate from flue gas, comprising the steps of (i) cooling the flue gas to a temperature below 170 DEG C, where yH2O is mole% of steam in the flue gas, P * H2O is the equilibrium vapor pressure of water in an aqueous ammonium nitrate solution, and p is the minimum operating pressure of the flue gas, and (ii) cooling the flue gas to a temperature below 170 DEG C. # imgabs0 #
Resumen de: EP4541451A1
This dehumidification apparatus is for dehumidifying a hydrogen gas that is produced by a hydrogen production device, the dehumidification apparatus comprising: a dehumidifier that includes an adsorption tower, inside of which there is provided an adsorbent that is capable of adsorbing moisture contained in the hydrogen gas; an inlet line for introducing the hydrogen gas from the hydrogen production device into the dehumidifier; an inlet valve that is provided to the inlet line; an outlet line for discharging the hydrogen gas that is dehumidified by the dehumidifier out from the dehumidifier; an outlet valve that is provided to the outlet line; and a control device that is configured to adjust the opening degree of the inlet valve and the opening degree of the outlet valve on the basis of the pressure within the adsorption tower during activation of the dehumidification apparatus.
Resumen de: EP4541943A1
An electrode for electrolysis, including:a conductive substrate; anda 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 2θ 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, a molar ratio of the ruthenium element to the iridium element, in terms of ruthenium element/iridium element, is 1.4 or more, and a molar ratio of the metal element M to the ruthenium element, in terms of metal element M/ruthenium element, is 0.06 or more and 3.5 or less.
Resumen de: WO2023245201A2
A process of dissociating ammonia into a dissociated hydrogen/nitrogen stream in catalyst tubes within a radiant tube furnace and an adiabatic or isothermal unit containing catalyst, along with downstream purification process units to purify the dissociated hydrogen/nitrogen stream into high purity hydrogen product.
Resumen de: EP4542815A2
An HVDC system comprising an AC/DC converter sub-system electrically connected to a renewable energy equipment and a VSC sub-system is provided. A method comprises operating the renewable energy equipment to function as a voltage source to energize an HVDC link between the AC/DC converter sub-system and the VSC sub-system; operating the VSC sub-system as a voltage source to energize at least one electrical load electrically connected thereto; if it is determined that the power production rate of the renewable energy equipment is not within a designated parameter, operating the equipment to follow the VSC sub-system such that controlling the AC electric power output influences the power production rate. If it is within the designated parameter, operating the VSC sub-system to follow the renewable energy equipment such that the VSC sub-system adjusts the properties of its AC electric output to match the properties of the electric power generated by the renewable energy equipment.
Resumen de: WO2024047362A2
A membrane electrode assembly (MEA) for producing hydrogen in a water electrolyser is provided. The MEA comprises a polymer electrolyte membrane (REM), a cathode comprising a cathode catalyst on a first side of the REM, an anode comprising an anode catalyst on a second side of the REM, and a platinum-ruthenium (Pt-Ru) catalyst located on the second side of the REM for electrochemically converting hydrogen gas into hydrogen cations in use. The Pt-Ru catalyst is in electrical contact with the anode and ionic contact with the REM.
Resumen de: TW202428343A
The invention relates to the electrochemical production of hydrogen and lithium hydroxide from Li+-containing water with the aid of an LiSICon membrane. It addresses the problem of specifying a process that can be operated economically on an industrial scale too. In particular, the process should have good energy efficiency and achieve a high membrane lifetime even when the employed feed contains impurities that are harmful to LiSICon materials. A particular aspect of the process is that the selective separation of lithium by the membrane and an electrolysis of water take place simultaneously in the cell. A key aspect of the process is that the electrochemical process is carried out in basic media, more precisely at pH 9 to 13. The pH is adjusted by adding a basic compound to the feed.
Resumen de: EP4541941A1
To provide a technique allowing reduction in the amount of usage of a catalyst material while alleviating performance degradation of a gas diffusion layer. A cell as an electrode structure comprises an electrolyte membrane (41), a gas diffusion layer (43), and a catalyst layer (45). The gas diffusion layer (43) is positioned on one side of the electrolyte membrane (41). The gas diffusion layer (43) is a porous layer. The catalyst layer (45) is positioned between the electrolyte membrane (41) and the gas diffusion layer (43). The catalyst layer (45) is formed from a catalyst material. A penetration part (433) formed in the gas diffusion layer (43) by the penetration the catalyst material having a thickness of 1 µm or less.
Resumen de: US2025122630A1
The invention relates to a method for removing nitrogen compounds which includes electrolysing a urea derivative of general formula I: (R1,R2)N—C(═X)—N(R3,R4), wherein: X means NH, NR5 or S, R1, R2, R3, R4 and R5 can be the same or different, and have the meanings indicated in claim 1, or a polymer of the compound of formula I, in an aqueous medium, in at least one electrolytic cell comprising an anode that comprises a metal, wherein “metal” means one or more metals, one or more compounds of a metal or a mixture of metal compounds or combinations thereof, and comprising a metal cathode. Nitrogen is obtained as a result of the oxidation of the nitrogen compounds at the anode and hydrogen as a result of the reduction of the water at the cathode, with the condition that if the anode is made of platinum, the cathode is not made of platinum.
Resumen de: US2025122628A1
Embodiments are disclosed comprising an electromechanical device that generates hydrogen from mechanical energy without requiring an external source of electrical energy. In one embodiment, for example, the only external energy required is rotational energy and the necessary electrical energy for electrolytic dissociation of water is generated internally to the device. Various aspects of embodiments of the invention provide enhanced efficiency for generating hydrogen. Details of various embodiments are further described herein.
Resumen de: US2025122627A1
A method of generating hydrogen including applying a potential of greater than 0 to 2.0 V to an electrochemical cell that is partially submerged in an aqueous solution. On applying the potential, water in the aqueous solution is reduced, and thereby forms hydrogen. The electrochemical cell includes an electrocatalyst and a counter electrode. The electrocatalyst includes a substrate, WO3−x nanosheets, and CdS1−y nanospheres, in which, x is from greater than 0 to less than 3 and y is from greater than 0 to less than 1. The CdS1−y nanospheres are dispersed on the WO3−x nanosheets to form a nanocomposite, which is dispersed on a surface of the substrate. The WO3−x nanosheets have an average length of 600-800 nanometers (nm) and an average width of 300-500 nm, and the CdS1−y nanospheres have an average diameter of 10-50 nm.
Resumen de: US2025122629A1
A mission configurable system for fuel generation is provided. The mission configurable system includes a mobility unit configured to support multiple fuel generation components customized to a specific mission. The fuel generation components can include at least one renewable energy generation system such as a hydrogen electrolyzer, a methane reformer, a solar panel, and/or a wind turbine.
Resumen de: US2025121344A1
A process for carrying out an endothermic reaction of a feed gas in a reactor system including a pressure shell housing a structured catalyst arranged for catalyzing the endothermic reaction of a feed gas, the structured catalyst including a macroscopic structure of electrically conductive material, the macroscopic structure supporting a ceramic coating, the ceramic coating supporting a catalytically active material.
Resumen de: US2025123002A1
In one aspect, an appliance for heating food, in particular a grill, and/or for emitting heat to the surroundings, in particular a heating appliance, includes at least one provision unit for providing hydrogen and at least one reaction unit for generating heat from the hydrogen. In one implementation, the reaction unit is designed as a catalytic unit for the flameless combustion of the hydrogen having at least one catalyst for catalyzing the hydrogen.
Resumen de: US2025125653A1
A mobile hydrogen supply system includes a natural energy power generation device that generates electric power from natural energy, and a hydrogen generation device that generates hydrogen. The hydrogen generation device is operable on electric power generated by the natural energy power generation device, and the natural energy power generation device and the hydrogen generation device are transportable.
Resumen de: US2025125395A1
A metal fluoride-functionalized proton-exchange solid support includes a proton-exchange solid support comprising a substituent group including an oxygen atom, and a metal fluoride group comprising a multivalent metal atom covalently bonded to the oxygen atom included in the substituent group, wherein the metal atom has a negative formal charge.
Nº publicación: US2025125396A1 17/04/2025
Solicitante:
W L GORE & ASS INC [US]
W. L. Gore & Associates, Inc
Resumen de: US2025125396A1
There is provided a composite electrolyte membrane for an electrochemical device, comprising at least one reinforced polymer electrolyte membrane having a first surface and an opposing second surface. The reinforced polymer electrolyte membrane comprises a microporous polymer structure and an ion exchange material, in which the ion exchange material is at least partially embedded within the microporous polymer structure to render the microporous polymer structure occlusive. The composite electrolyte membrane further comprises a plurality of porous layers comprising a first porous layer and a second porous layer, in which the first porous layer is adjacent to the first surface of the first reinforced polymer electrolyte and the second porous layer is adjacent to the second surface of the reinforced polymer electrolyte. Also disclosed is a membrane electrode assembly comprising such a composite electrolyte membrane and a redox flow battery, fuel cell, and electrolyzer comprising such a membrane electrode assembly.
BOPI
Sede Electrónica
