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555
results.
Updated on
19/12/2025 [06:59:00]
Results 475 to 500 of 555
Absstract of: TW202502644A
A process for the catalytic cracking of ammonia, the process comprising: supplying an ammonia feed gas to one or more heated catalyst containing reaction vessels disposed within an ammonia cracking reactor; and cracking the ammonia in the ammonia feed gas in the one or more catalyst containing reaction vessels to produce a hydrogen containing stream, wherein the or each of the reaction vessels has a wall which is composed of at least a first alloy and a second alloy, wherein the first alloy is more resistant to nitriding than the second alloy and the second alloy provides mechanical support to the first alloy, and wherein at least a portion of the wall adjacent the catalyst is composed of the first alloy.
Absstract of: CN120830125A
The invention provides a multi-principal-element alloy electrode material and a preparation method and application thereof. The multi-principal-element alloy electrode material comprises a multi-principal-element alloy matrix and a P-containing compound coating layer coating the outer surface of the multi-principal-element alloy matrix. Wherein the multi-element alloy matrix is alloy NiCoFeTiMo, and the atomic ratios of all metal elements are as follows: 5% < = Ni < = 60%, 5% < = Co < = 60%, 5% < = Fe < = 60%, 5% < = Ti < = 60%, and 5% < = Mo < = 60%. The multi-principal-element alloy electrode material prepared by adopting the preparation method disclosed by the invention has relatively low hydrogen evolution overpotential, relatively good catalytic performance and corrosion resistance, relatively high stability and relatively excellent comprehensive performance.
Absstract of: WO2025222998A1
A hydrogen generation device with a breathing detection function. The hydrogen generation device comprises an electrolytic cell, a gas pipe, a sensor, a valve switch and a controller, wherein the electrolytic cell is used for electrolyzing water to generate a hydrogen-containing gas; the gas pipe is in communication with the electrolytic cell and has a gas outlet, and the gas pipe is used for receiving the hydrogen-containing gas and outputting the hydrogen-containing gas through the gas outlet; the sensor is used for sensing the breathing of a user to generate a breathing signal; the valve switch is arranged in the gas pipe; and the controller is electrically connected to the valve switch and the sensor, and the controller opens the valve switch on the basis of an inspiration signal, and closes the valve switch on the basis of an expiration signal. Therefore, the present invention provides the hydrogen-containing gas, and does not provide the hydrogen-containing gas in an expiration state, such that not only can excessive pressure in a breathing tube be prevented, but also the hydrogen-containing gas can be prevented from rapidly flowing to a user when the user inhales again, thereby improving the practicability and the usage experience.
Absstract of: CN120830117A
The invention relates to a method for preparing hydrogen and oxygen by electrolyzing water through a proton exchange membrane, which comprises the following steps: electrolyzing water in a PEM (Proton Exchange Membrane) electrolytic bath to obtain an anode product from an anode side and a cathode product from a cathode side; the anode product enters an oxygen separation unit for separation treatment, and oxygen and anode separation liquid are obtained; enabling the cathode product to enter a heat exchange unit to exchange heat with a cooling medium to obtain a cathode product after heat exchange; enabling the cathode product after heat exchange to enter a hydrogen separation unit for separation treatment to obtain hydrogen and condensed water; wherein the heat exchange unit comprises a composite heat exchanger; the oxygen separation unit comprises an oxygen separation device. The method disclosed by the invention is small in number of used equipment, small in occupied area, low in energy consumption, high in response speed, simple in process flow and high in overall operation stability, and the prepared hydrogen and oxygen products are high in purity.
Absstract of: AU2024224275A1
A process for the reaction of aluminium with water comprising the steps of adding aluminium metal to an aqueous solution comprising potassium hydroxide at a concentration of between 0.1M and 0.4M and a surfactant; agitating the mixture of previous step; and collecting generated hydrogen. A composition for use in such a process for reacting aluminium with water, comprising potassium hydroxide and a surfactant.
Absstract of: MX2025009259A
A hydrogen generation system includes: a direct current (DC) power supply providing a driver signal, a reactive circuit coupled to the power supply and configured to generate a pulse drive signal from the driver signal, at least one reaction chamber coupled to the reactive circuit and receiving the pulse drive signal wherein the chamber is configured to generate hydrogen from feedstock material utilizing the pulse drive signal, a gas analyzer coupled to the at least one reaction chamber and configured to detect the generated hydrogen, and a control unit coupled to the reactive circuit and to the gas analyzer and configured to control the reactive circuit based on the detected hydrogen. The reaction chamber includes a plurality of positively charged elements and a plurality of negatively charged elements. The elements are composed of non-dis similar metallic material.
Absstract of: KR20250153019A
본 발명은 전극용 금속 폼의 표면 산화층을 제거하여 전처리된 금속 폼 기판을 준비하는 단계; 및 상기 전처리된 금속 폼 기판을 전이금속 전구체를 함유하는 수용액에 침지시키고, 상기 금속 기판에 펄스 레이저를 조사하여 전기화학 촉매용 전극을 제조하는 제2 단계;를 포함하되, 상기 제2 단계에서, 상기 펄스 레이저의 파장은 250~1100 nm인 것을 특징으로 하는, 펄스 레이저 조사를 이용한 전기화학 촉매용 전극의 제조방법을 제공한다. 본 발명의 제조방법은 3차원 전극 기판 상에 전이금속 또는 전이금속 산화물 층을 one-pot 방식으로 형성하며, 추가적인 환원제의 사용 없이 금속을 환원시킬 수 있고, 종래의 바인더를 사용하여 전극과 활물질을 결합하는 방식에서 벗어나 공정의 단계를 개선함으로써 공정비용을 감소시키는 효과가 있다.
Absstract of: JP2025161369A
【課題】共電解の電解開始時の電流取り出しから定格相当の電流を得るまでの工程において、メタン化反応に最適な（一酸化炭素＋二酸化炭素）／水素の比率を実現し、エネルギー変換効率の向上が可能な、共電解メタネーション装置を提供する。【解決手段】水蒸気と二酸化炭素を電解する共電解部５と、水蒸気と二酸化炭素の流量を制御する流量制御手段と、メタン合成部７と、分離部と、を備える共電解メタネーション装置１であって、共電解部５に電解電力を供給する電解電圧制御手段と、電解電流を計測する電解電流計測手段と、が備えられており、流量制御手段は、共電解部５の電解電流の取り出し開始から定格電解電流に達するまでの過程において、電解電流の増加に応じて、カソード極５３に供給する水蒸気及び二酸化炭素の各流量を制御する。【選択図】図１
Absstract of: JP2025161367A
【課題】最終出口部分での生成ガスの熱量を高位に保ち、熱量の変動幅を小さくする共電解メタネーション装置及びその運転方法の提供。【解決手段】水蒸気及び二酸化炭素を電気分解して水素、一酸化炭素、水蒸気及び二酸化炭素を含む合成ガスを生成する共電解部５と、共電解部５のカソード極５３に供給する水蒸気及び二酸化炭素の各流量を制御する流量制御手段と、合成ガスを冷却して水を分離し、圧縮する水分離・圧縮部６と、水が分離された合成ガスをメタン化触媒に通じてメタネーションを行うメタン合成部７と、メタン合成部７より送出されるガスからメタンを分離する分離部と、を備える共電解メタネーション装置１であって、二酸化炭素の流量に対する水蒸気の流量の比率である基準流量比率を算出する流量比算出手段９を備え、基準流量比率に基づき、カソード極５３に供給する水蒸気及び二酸化炭素の各流量を制御する。【選択図】図１
Absstract of: JP2025161071A
【課題】電解液の電気特性を制御しつつ、気液分離タンクの液位を一定に制御する水電解評価装置を提供する。【解決手段】水電解評価装置であって、供試体と導入ラインを介して接続され、前記供試体から導出される流体を酸素ガス又は水素ガスと電解液とに分離する気液分離タンクと、前記流体に含まれる電解液の導電率又は比抵抗を示す電気特性を測定する電気特性測定部と、前記気液分離タンクから前記電解液を排出するとともに、前記電解液の排液量を調整する排液量調整機器が設けられている排出ラインと、前記気液分離タンク内の前記電解液の前記電気特性と異なる水を前記気液分離タンクに供給するとともに、前記水の供給量を調整する供給量調整機器が設けられている供給ラインと、前記電気特性測定部により測定された前記電気特性に基づいて、前記排液量調整機器及び前記供給量調整機器を制御する流量制御部とを備える。【選択図】図１
Absstract of: JP2025161309A
【課題】 外部電源の異常発生時における水素製造システムの応答に応じて発生し得る外部電源への悪影響を抑制して外部電源の安定化を図るとともに、異常解消後の電流変動による水素製造装置の劣化を防止する。【解決手段】 本発明の水素製造システムは、水素製造装置と、水素製造装置に直流電流を出力する電力供給部と、外部電源の電圧を監視し、電圧の監視結果に基づき、電力供給部から出力される直流電流を制御する制御部であって、外部電源の電圧低下を検知すると、電力供給部から出力される直流電流の値を０より大きな所定の直流電流値に低下させて水素製造装置の運転を継続し、その後、外部電源の電圧回復を検知すると、直流電流の値を所定の増加態様で特定の直流電流値まで増加させる制御部と、を備える。【選択図】 図２
Absstract of: JP2025161368A
【課題】メタン純度を維持し、プロセス出口ガスの単位体積当たりの熱量を高位に保つ共電解メタネーション装置の提供。【解決手段】水蒸気と二酸化炭素を電解する共電解部と、水蒸気と二酸化炭素の流量を制御する流量制御手段と、メタン合成部と、を備える共電解メタネーション装置であって、電解電圧制御手段と、電解電流計測手段と、ガス利用率算出手段と、をさらに備え、流量制御手段は共電解部に第１制御流量値として水蒸気と二酸化炭素を供給し、電解電流計測手段は第１実績電解電流値として電流値を計測し、ガス利用率算出手段は第１制御流量値として供給した水蒸気と二酸化炭素の全量が水素と一酸化炭素に電解される場合の電解電流値を第１理論電解電流値として算出し、第１理論電解電流値に対する第１実績電解電流値の割合を第１実績ガス利用率とし、流量制御手段は第１実績ガス利用率に基づき水蒸気と二酸化炭素の流量を第２制御流量値として制御する。【選択図】図１
Absstract of: US2024141514A1
Provided herein are membrane electrode assemblies (MEAs) for carbon oxide reduction. According to various embodiments, the MEAs are configured to address challenges particular to COx including mitigating the deleterious effects of electrical current fluctuations on the MEA. Bipolar membrane MEAs equipped with an interface composed of nanoparticles are described.
Absstract of: AU2023379054A1
2. The invention relates to a filter for treating process fluid such as that which in particular arises during hydrogen electrolysis, preferably for separating hydrogen and/or oxygen from process water, having a first filter element (10) and a second filter element (12), which encloses the first filter element (10) with the formation of a flow space (14) with a predefinable radial spacing, wherein each filter element (10, 12) has a filter medium (16, 18) through which the process fluid can flow in a flow-through direction (24) from the outside to the inside or preferably from the inside to the outside, wherein, seen in the flow-through direction (24), the one filter medium (16) forms a first degassing stage, which is used to enlarge gas bubbles through coalescence and to remove same from the process fluid through separation caused by buoyancy, and the subsequent further filter medium (18) forms a second degassing stage, which is used to remove very finely distributed gas bubbles remaining in the process fluid, again through coalescence and the separation of same through rising caused by buoyancy.
Absstract of: WO2024086793A1
The present disclosure provides a catalyst, methods of manufacturing the catalyst, and methods for using the catalyst for ammonia decomposition to produce hydrogen and nitrogen. The catalyst may comprise an electrically conductive support with a layer of one or more metal oxides adjacent to the support and at least one active metal adjacent to the layer. Methods are disclosed for deposition of metal oxide and active metal, drying and heat treatment. The method of using the catalyst may comprise bringing ammonia in contact with the catalyst in a reactor. The catalyst may be configured to be heated to a target temperature in less than about 60 minutes, by passing an electrical current through the catalyst. The method of using the catalyst may comprise bringing the catalyst in contact with ammonia at about 450 to 700 °C, to generate a reformate stream with a conversion efficiency of greater than about 70%.
Absstract of: AU2024318321A1
The invention relates to an electrolysis system (10) comprising a plurality of electrolysis devices (34, 36) which are connected to a power supply line (30), the electrolysis devices (34, 36) having a power supply unit (38, 40) and an electrolysis module (12, 14, 16, 18, 20, 22, 24, 26) coupled to the power supply unit, the power supply units of the electrolysis devices comprising a transformer (42, 44, 46, 48) and a rectifier unit (50, 52, 54, 56, 58, 60, 62, 64), the transformer having a primary winding (66, 68, 70, 72) and a secondary winding (74, 76, 78, 80, 82, 84, 86, 88) connected to an AC voltage side of the rectifier unit. According to the invention, the primary winding of the transformer of at least a first of the electrolysis devices (40) is designed to be adjustable in stages, and the rectifier unit of said electrolysis device is designed to be operated in an uncontrolled manner, the rectifier unit of the power supply unit of at least a second of the electrolysis devices being designed to be operated in a controlled manner depending on the electrical energy that can be provided by the energy source.
Absstract of: WO2025219347A1
An method (100-600) for producing hydrogen is proposed, comprising providing a first gas (1) containing hydrogen, oxygen and water, said providing the first gas (1) comprising an electrolytic conversion of water; providing a second gas (5) containing hydrogen, oxygen and water, said providing the second gas (5) comprising a condensative removal of water from the first gas (1) or a part thereof; and providing a third gas (10) containing hydrogen, said providing the third gas (10) comprising an adsorptive removal of water and a catalytic removal of oxygen from the second gas (5) or a part thereof using a adsorptive and catalytic treatment arrangement (110) comprising treatment vessels (A, B), wherein each of the treatment vessels (A, B) comprises, in a first direction from a first opening to a second opening, a first adsorption layer (211), a catalytic layer (212) and a second adsorption layer (213), wherein each of the treatment vessels (A, B) is alternatingly operated in a treatment mode and a regeneration mode, wherein, in the treatment mode, the second gas (5) or a part thereof is passed in the first direction through the treatment vessels (A, B), wherein, in the treatment mode, the first adsorption layer (211) and the second adsorption layer (213) are used for said adsorptive removal of water and the catalytic layer (212) is used for said catalytic removal of oxygen, wherein, in the regeneration mode, the treatment vessels (A, B) are heated using a heating gas (5a, 10a) wh
Absstract of: WO2025219222A1
The present invention relates to a system and a method for the combined compression of "green" hydrogen and natural gas in a natural gas compressor when "green" hydrogen is added into a conventional NH3 system or to an NH3-urea complex.
Absstract of: WO2025221010A1
The present invention relates to a porous support for water electrolysis, which has constant surface resistance and electrical conductivity due to coating layers uniformly formed inside and outside thereof, wherein the porous support comprises: a porous fabric support formed by intersecting a plurality of fibers with each other; a catalyst layer formed on the porous fabric support; a first coating layer formed on the catalyst layer; and a second coating layer formed on the first coating layer.
Absstract of: WO2025220974A1
The present invention relates to a molded catalyst for ammonia decomposition and a manufacturing method therefor and, more specifically, to an economical method for manufacturing a molded catalyst for ammonia decomposition and a molded catalyst manufactured thereby, wherein a catalyst carrier is prepared by coating various molded bodies such as beads, pellets, honeycombs, and the like with lanthanum and cerium and then ruthenium is supported on the catalyst carrier to produce an ammonia decomposition catalyst as a catalyst with superior activity in an ammonia decomposition reaction, whereby the strength of the coating can be sufficiently expressed, the catalytic activity can be improved or maintained even with a small amount of a catalytically active material (ruthenium), the loss of a coating solution can be reduced during a catalyst coating process, and the molded catalyst can be manufactured without a separate powder catalyst manufacturing process.
Absstract of: WO2025220485A1
The present disclosure provides an electrolytic cell stack capable of increasing the amount of product generated by electrolysis while suppressing a temperature rise of the cell stack. An electrolytic cell stack (101) according to the present disclosure comprises: a hydrogen generation unit (10) provided with an electrolytic cell (105) having a hydrogen electrode, an oxygen electrode, and a solid electrolyte membrane; a raw material gas supply port (11); a hydrogen gas discharge port (12); a raw material gas supply-side heat exchange unit (13); and a hydrogen gas discharge-side heat exchange unit (14). The raw material gas supply-side heat exchange unit and the hydrogen gas discharge-side heat exchange unit are each composed of a heat transfer unit and a header unit. The heat transfer unit area of the hydrogen gas discharge-side heat exchange unit is larger than the heat transfer unit area of the raw material gas supply-side heat exchange unit.
Absstract of: WO2025218743A1
Provided in the present application are a new-energy hydrogen production power supply, and a new-energy hydrogen production system and a control method therefor. The new-energy hydrogen production power supply comprises: a rectification stage, which is used for connecting to a power bus to perform conversion between an alternating current and a direct current; an energy storage stage, which is connected to a direct-current side of the rectification stage in parallel and is used for absorbing, storing and/or releasing electric energy; and a chopping stage, which is separately connected to the rectification stage and an electrolyzer and is used for increasing or reducing a direct-current voltage and providing a direct current to the electrolyzer. The control method for a new-energy hydrogen production system comprises: on the basis of the power generation condition of a power bus, controlling a new-energy hydrogen production power supply to operate in the following operating modes: a new-energy low generation mode, a new-energy hydrogen production mode, a new-energy fluctuation mode and a new-energy power-deficient mode. The new-energy hydrogen production power supply has an energy storage link, can operate in modes where the new-energy output is low or fluctuates rapidly, can absorb or send active power to maintain the operation of an electrolyzer, and can use an energy storage stage to mitigate new-energy fluctuations, thus maximizing the utilization of new-energy power.
Absstract of: WO2025218265A1
Disclosed in the present invention are a hydrogen production and dissolution system and method. The hydrogen production and dissolution system comprises a power supply assembly, an electrolysis assembly, a treatment assembly, a reaction assembly, and a safety assembly. The treatment assembly comprises a gas-liquid separator, and the gas-liquid separator is communicated with an electrolyzer; the reaction assembly comprises a pressure booster and reaction tanks, the pressure booster has one end communicated with the gas-liquid separator and the other end communicated with the reaction tanks, the pressure booster pressurizes the reaction tanks, and an ultrasonic generator is provided in each reaction tank; and the safety assembly comprises leakage sensors, and each leakage sensor is arranged on a side of a corresponding reaction tank. The hydrogen production and dissolution method is used for controlling the hydrogen production and dissolution system. The present invention can directly dissolve the produced hydrogen in water, thereby reducing potential safety hazards while eliminating the need for storage and transportation devices.
Absstract of: WO2025217726A1
The present disclosure relates to core-shell particles, such as core-shell particles comprising a core comprising TiOx; and a shell comprising iridium, methods of preparing core-shell particles, and uses thereof, such as a catalyst in an oxygen evolution reaction (OER).
Nº publicación: WO2025220363A1 23/10/2025
Applicant:
MITSUBISHI POWER LTD [JP]
MITSUBISHI HEAVY IND LTD [JP]
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\u4E09\u83F1\u91CD\u5DE5\u696D\u682A\u5F0F\u4F1A\u793E
Absstract of: WO2025220363A1
This water electrolysis system uses an alkaline aqueous solution as an electrolytic solution, and is provided with: a cell stack to which the electrolytic solution is supplied; a storage unit in which the electrolytic solution is stored; an annular flow path that connects the storage unit and the cell stack; a pump unit that is provided on the annular flow path; a scale removal unit that is provided on the annular flow path and is capable of removing a scale contained in the electrolytic solution; and a scale component removal unit that is capable of removing scale components dissolved in the electrolytic solution at a saturation concentration or less.
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