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1060
results.
Updated on
24/10/2026 [07:27:00]
Results 25 to 50 of 1060
Absstract of: EP4825790A1
Provided according to exemplary embodiments of the present invention is an ammonia decomposition system capable of minimizing the generation of iron nitride, which is a byproduct.
Absstract of: US20250197211A1
Chemical looping systems and methods for producing hydrogen gas are described herein that use a fluidized-bed reactor to reduce carrier particles; and a moving-bed hydrogen reactor to oxidize the reduced carrier particles and form hydrogen gas. Also possibly included as a cooler for cooling the oxidized carrier particles; and a silo for storing the oxidized carrier particles and feeding them to the fluidized-bed reactor and other components. Various configurations of these components are disclosed herein.
Absstract of: EP4570744A1
0001 A method for producing hydrogen using a feed stream comprising ammonia is provided. The method can include the steps of: cracking a gaseous ammonia feed in an ammonia cracker to produce a cracked gas stream comprising hydrogen, nitrogen, and unreacted ammonia; cooling the cracked gas stream to a first temperature that is sufficient for condensing at least a portion of the unreacted ammonia to form a dual phase fluid; separating the dual phase fluid in an ammonia separator to produce a liquid ammonia stream and a top gas stream comprised predominately of hydrogen and nitrogen; removing additional ammonia from the top gas stream using a front-end purification system to form a purified top gas stream; further cooling the purified top gas stream to a second temperature that is sufficient for condensing at least a portion of the nitrogen within the top gas stream to form a dual-phase stream, wherein the second temperature is colder than the first temperature; introducing the dual-phase stream to a cryogenic hydrogen separator under conditions effective for separating hydrogen and nitrogen, thereby creating a liquid nitrogen stream and a hydrogen top gas; warming and vaporizing the liquid nitrogen stream to produce a gaseous nitrogen stream; warming the hydrogen top gas to produce a gaseous hydrogen product stream; and recycling the liquid ammonia stream produced by the ammonia separator to a point upstream the ammonia cracker.
Absstract of: EP4570950A1
The present invention relates to an electrolyzer designed for the generation of hydrogen and oxygen through water electrolysis. The electrolyzer comprises a housing structure accommodating at least one electrolytic cell, which includes an anode, a cathode, and an ion-conducting membrane. A water inlet is provided to introduce water into the electrolytic cell, and an electrical power source is operatively connected to the anode and cathode to facilitate the electrolysis process. The electrolyzer also includes separate outlets for the efficient extraction of hydrogen and oxygen generated during electrolysis. A multi-parameter optical measurement system is integrated within the electrolyzer. This system features at least one optical fiber with multiple sensing points distributed along its length, each capable of detecting various operational parameters within the electrolyzer.
Absstract of: EP4570743A1
A method for producing hydrogen using a feed stream comprising ammonia is provided. The method may include the steps of: cracking a gaseous ammonia feed comprising ammonia and at least 0.15% water vapor in an ammonia cracker to produce a cracked gas stream comprising hydrogen, nitrogen, unreacted ammonia, and water vapor; cooling the cracked gas stream to a separation temperature that is sufficient for condensing at least a portion of the unreacted ammonia and the water vapor to form a dual phase fluid; separating the dual phase fluid in a separator that is configured to produce an aqueous ammonia stream and a vapor stream, the vapor stream comprising predominantly of hydrogen and nitrogen; wherein the separation temperature is below 0°C.
Absstract of: EP4570956A1
The invention refers to an electrochemical system (1) suitable for hot idling comprising- at least one electrochemical module (11) comprising a fuel electrode section, an oxidant electrode section, and a membrane;- at least one fluid inlet line (10) leading to the electrochemical module (11), in particular to the fuel electrode section;- at least one fluid outlet line (12) exiting the electrochemical module (11);- a gas recirculation unit (15) to recirculate a gas or gas mixture exiting the electrochemical module (11) to the fuel electrode section.The system comprises an inert gas unit (3), preferably nitrogen unit, for supplying inert gas to the at least one fluid inlet line (10). The invention refers also to a method of performing electrolysis in a hot idling mode.
Absstract of: EP4825794A1
The present invention relates to a catalyst-free hydrogen releasing method comprising: providing (100) a polysiloxane hydrogen carrier; contacting (200) a proton source with the polysiloxane hydrogen carrier thereby obtaining a polysiloxane mixture; pressurizing (300) the polysiloxane mixture at a pressure of higher than 1 bar; and heating (400) the polysiloxane mixture at a temperature of at least 100°C; thereby obtaining a gaseous
Absstract of: WO2025205502A1
Provided are: a separator for hydrogen production, the separator containing a woven fabric support and a porous material that contains an organic polymer, wherein the calender ratio of the woven fabric support calculated by the formula below is 73% or less; an alkaline water electrolysis member, an alkaline water electrolysis cell, an alkaline water electrolysis device, and a method for producing hydrogen, each using the same; and a method for producing a separator for hydrogen production. Calender ratio = (d2/(2 × d1)) × 100% In the formula, d1 represents the fiber diameter of the woven fabric support, and d2 represents the thickness of the woven fabric support.
Absstract of: US20260317912A1
An energy system and a method for operating an energy system, which includes a hydrogen production unit having at least one electrolyzer for water electrolysis, the electrolyzer being thermally coupled to a cooling water circuit; and a heat pump, the heat source side of which is thermally coupled to the cooling water circuit and the heat sink side of which is coupled via a heat exchanger to a district heat or useful heat circuit. A heat store is incorporated into the district heat or useful heat circuit, the return line of which is connected downstream of the heat exchanger and the feed line of which is connected upstream of the heat exchanger of the heat pump, such that heat from the heat store is used to raise the return temperature of the district heat or useful heat circuit.
Absstract of: US20260317930A1
0000 An electrolysis plant for producing dihydrogen (H<2>) and dioxygen (O<2>) by electrolysis of water is provided. The plant includes a degassing device (1) which includes an opening for a first gas-liquid mixture supply pipe (11), an opening for a liquid discharge pipe (12) arranged below the level of the gas-liquid interface (15) of the chamber (14), and an opening for a gas discharge pipe (13) arranged above the level of the gas-liquid interface (15) of the degassing chamber (14). Furthermore, the device has one or more additional openings for one or more additional gas-liquid mixture supply pipes (21, 22), said one or more additional gas-liquid mixture supply pipes (21, 22) being arranged such that the jets of gas-liquid mixture introduced into the degassing chamber (14) via the supply pipes (11, 21, 22) intersect within the gas-lye mixture in the degassing chamber (14).
Absstract of: US20260321694A1
0000 A purpose of the present invention is to provide: an electrolyte membrane for a polymer electrolyte fuel cell, said electrolyte membrane having excellent proton conductivity; a membrane electrode assembly that includes the electrolyte membrane for the polymer electrolyte fuel cell; a polymer electrolyte fuel cell that includes the membrane electrode assembly; methods for producing the electrolyte membrane for a polymer electrolyte fuel cell, the membrane electrode assembly, and the polymer electrolyte fuel cell; and an electrolyte membrane for solid polymer water electrolysis. 0000 The electrolyte membrane for a polymer electrolyte fuel cell according to the present invention contains fine fibrous cellulose that is derived from wood or plants, wherein the average fiber width of the fine fibrous cellulose that is derived from wood or plants is 50 nm or less, and the fine fibrous cellulose has a phosphorus oxoacid group.
Absstract of: US20260317919A1
0000 The present invention discloses an electrolyser cell frame assembly comprising a cell frame with an inner peripheral edge and an outer peripheral edge; a gasket with an inner peripheral edge and an outer peripheral edge; and a cell element with a peripheral edge compressed between the gasket and the cell frame. The gasket exhibits compressible characteristics whereas the cell frame exhibits rigid characteristics. The outer peripheral edge of the gasket extends outwards over the peripheral edge of the cell element in the direction of the outer peripheral edge of the cell frame such that the gasket overlaps a predefined part of the cell frame.
Absstract of: US20260321700A1
A Solid Oxide Cell stack has at least one connection plate between the solid oxide cell stack and an adjacent end plate, two adjacent end plates and/or between adjacent solid oxide cell sub-stacks.
Absstract of: US20260317184A1
0000 Process for synthesis of ammonia wherein: ammonia make-up gas (containing hydrogen and nitrogen is reacted in an ammonia converter-under ammonia forming conditions thus obtaining an ammonia-containing effluent; a first hydrogen portion contained in the ammonia make-up gas is produced by reforming a hydrocarbon source in a reforming process; a second hydrogen portion contained in the ammonia make-up gas is produced separately from said reforming process, by using at least a renewable energy source; a part of said hydrogen produced in step (c) is stored in a hydrogen storage; hydrogen from said hydrogen storage is used to fully or partially replace said second hydrogen portion when said renewable energy source is fully or partially unavailable.
Absstract of: US20260316612A1
0000 A system for electric vehicle charging and hydrogen fueling leverages existing infrastructure of a localized renewable energy microgrid and utilizes excess generated energy to power an electrolyzer to produce hydrogen gas on site that is compressed and stored in a pressure vessel. A first portion of the stored hydrogen gas may be used for hydrogen fueling of a fuel cell electric vehicle (FCEV) via a hydrogen fuel dispenser that is provided at a charging station. A second portion of the stored hydrogen gas may be converted into electricity through use of one or more fuel cells. The generated electricity may be used for charging a battery of a battery electric vehicle (BEV) via an electric vehicle charging dispenser that is also provided at the charging station.
Absstract of: WO2023007466A1
Systems and methods for sequestering carbon, evolving hydrogen gas, producing iron oxide as magnetite, and producing magnesium carbonate as magnesite through sequential carbonation and serpentinization/hydration reactions involving processed olivine- and/or pyroxene-rich ores, as typically found in mafic and ultramafic igneous rock. Precious or scarce metals, such nickel, cobalt, chromium, rare earth elements, and others, may be concentrated in the remaining ore to facilitate their recovery from any gangue material.
Absstract of: WO2026216168A1
A hydrogen production system (1) has a steam electrolysis device (3) and a steam supply unit (2) for supplying steam to the steam electrolysis device (3). The steam supply unit (2) has: a heat exchanger (21) for heating liquid water (w) to generate first steam (v1) which is wet saturated vapor; and an electric heater (22) for heating the first vapor (v1) to generate second vapor (v2) having a higher degree of dryness than the first vapor (v1).
Absstract of: US20260317923A1
0000 A photoelectrocatalyst that includes nanoparticles of manganese (Mn) and cobalt (Co) co-doped zinc oxide (ZnO) having a formula of Mn
Absstract of: DE102025113916A1
Die vorgestellte Erfindung betrifft ein Verfahren (100) zum Betreiben eines Elektrolysesystems (200), das eine Vielzahl Zellstapel (201, 202, 203) umfasst, wobei das Verfahren (100) umfasst:- Betreiben (101) jeweiliger Zellstapel (201, 202, 203) des Elektrolysesystems (200) an einem vorgegebenen Betriebspunkt,- Ermitteln (102) eines Verhältnisses von Wasserstoffgas zu Sauerstoffgas auf einer Anodenseite eines jeweiligen Zellstapels (201, 202, 203) an dem vorgegebenen Betriebspunkt,- Ermitteln (103) eines spezifischen Kennwerts, der einen Zustand des jeweiligen Zellstapels angibt, anhand des ermittelten Verhältnisses von Wasserstoffgas zu Sauerstoffgas, und- Reduzieren (104) einer Spannung eines ersten Zellstapels, an dem von allen Zellstapeln (201, 202, 203) eine höchste Spannung anliegt, wenn eine dem Elektrolysesystem (200) bereitgestellte Menge an elektrischem Strom unter einen vorgegebenen Reduktionsschwellenwert fällt, wobei für den Fall, dass die Spannung des ersten Zellstapels auf einen Wert zu reduzieren ist, der zu einem Verhältnis von Wasserstoffgas zu Sauerstoffgas auf der Anodenseite des ersten Zellstapels führt, das kleiner ist als der spezifische Kennwert des ersten Zellstapels, statt der Spannung des ersten Zellstapels die Spannung eines weiteren Zellstapels der Vielzahl Zellstapel (201, 202, 203) reduziert wird.
Absstract of: WO2026216834A1
A method of energy self-sufficient sodium sulfate waste recycling of the present invention comprises the step of: feeding sodium sulfate waste into a two-compartment electrolytic cell and applying electric current so as to generate caustic soda, sulfuric acid, hydrogen, and oxygen; adding the mixture of the generated sulfuric acid and unreacted sodium sulfate waste into a crystallizer so as to recrystallize the sodium sulfate waste and separating into sulfuric acid and sodium sulfate crystals; supplying the hydrogen and the oxygen to a hydrogen fuel cell; and recycling the sodium sulfate crystals as a feedstock for the two-compartment electrolytic cell wherein the two-compartment electrolytic cell has a structure including a first cathode, a first anode, and a cation exchange membrane (CEM) disposed between the first cathode and the first anode, the hydrogen fuel cell has a structure including a second cathode, a second anode, and a proton exchange membrane (PEM) disposed between the second cathode and the second anode, and electrical energy generated by the hydrogen fuel cell may be used as electric power for the two-compartment electrolytic cell.
Absstract of: US20260316030A1
0000 Provided are an apparatus for promoting a chemical reaction of a metal oxide catalyst using microwaves and plasma and a method for promoting a chemical reaction using the same, which are capable of producing hydrogen by reducing and oxidizing a catalyst member, which is a metal oxide, and performing water splitting under a relatively low temperature.
Absstract of: US20260317920A1
0000 The present disclosure relates to a porous transport layer, a water electrolysis cell including the same, and a method for manufacturing the porous transport layer. According to one aspect of the present disclosure, a porous transport layer including a porous substrate and a first coating layer disposed on one surface of the porous substrate and including platinum (Pt)-containing nanoparticles may be provided.
Absstract of: WO2026215235A1
The present invention relates to a method (100) of minimizing degradation of cells (300) in an electrochemical energy converter (200), wherein the cells (300) each have a membrane (307) and a nickel-containing storage layer (303), wherein the method (100) comprises: - operating (101) the energy converter (200) in an electrolysis operation, in which water is split into hydrogen and oxygen in the cells (300) by supplying electrical current, - ending (103) the electrolysis operation and - converting (105) oxygen stored in the storage layer (303) of the respective cells (300) by the electrolysis operation with hydrogen provided in the electrolysis operation to water and electrical current.
Absstract of: WO2026216729A1
The present invention relates to a plasma-based hydrogen production apparatus capable of significantly improving hydrogen production efficiency by using a means for selectively isolating only hydrogen ions in the process of introducing fine water particles to a plasma reactor and electrolyzing water molecules to separate ions. That is, the present invention is characterized by a plasma-based hydrogen production apparatus which introduces fine water particles to a plasma reactor to which power is applied and electrolyzes water molecules to separate ions, wherein: the plasma reactor includes a housing composed of a vertical tube of a certain length, a reduction electrode installed in the inner center of the housing to apply negative charges, a negative-ion separator installed on the outer circumference of the reduction electrode, an oxidation electrode installed between the negative-ion separator and an inner wall of the housing to apply positive charges, a particulate inlet installed under the housing to introduce the fine water particles to the reduction electrode, an oxygen outlet formed on an upper sidewall of the housing to discharge oxygen generated by the oxidation electrode, and a hydrogen outlet formed above the housing to discharge hydrogen generated while passing through the reduction electrode; and the power is applied to the plasma reactor by connecting the reduction electrode to a first electrical connection unit provided inside a first electrode cap and connectin
Nº publicación: US20260317926A1 15/10/2026
Applicant:
AGFA GEVAERT NV [BE]
Agfa-Gevaert NV
Absstract of: US20260317926A1
0000 A catalyst coated separator for alkaline water electrolysis (1) comprising a porous support (100) and on at least side of the support, in order:—an optional porous polymer layer (200),—a non-porous alkali-stable polymer layer (300), and—a catalyst layer (400).
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