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Resultados 500 a 525 de 794
Resumen de: US2025179655A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179652A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179656A1
A method for controlling a hydrogen generation system includes controlling the potentials of an electrode for oxygen generation and an electrode for hydrogen generation included in an electrolyzer so that the potential change is smaller in the electrode for oxygen generation or the electrode for hydrogen generation having a larger deterioration rate than in the electrode having a smaller deterioration rate.
Resumen de: WO2024023030A2
A method of electrolysing hydrogen bromide comprising the steps i) synthesizing sulfuric acid such that hydrogen bromide is produced, ii) providing an electrolytic cell comprising an anode, a cathode, and a membrane sandwiched between the anode and the cathode, iii) feeding a first composition comprising hydrogen bromide and water to the anode, iv) feeding a second composition comprising hydrogen bromide and water to the cathode, and v) operating the electrolytic cell to produce hydrogen at the cathode.
Resumen de: AU2023379422A1
Abstract An multi-stage electrolyzer cell is disclosed. The multi-stage electrolyzer cell comprises an anode, a cathode and at least one ion exchange membrane separating the anode and the 5 cathode. The anode and cathode are exposed in the respective anode chamber and cathode chamber. At least one partition is arranged within at least one of the anode and cathode chambers, dividing the at least one chamber into a plurality of process stages. Each of the partitions comprises a feed port, allowing an electrolyte solution to transport sequentially through each of the plurality of process stages. Means are arranged to 10 transport the electrolyte solution through each one of the plurality of process stages. A multi-stage electrolytic method is also disclosed.
Resumen de: CN119698495A
A process for the production of hydrogen comprising the steps of: a) providing a starting mixture comprising bromine, water and a sulfur-containing compound, b) reacting the starting mixture provided in step a) to produce a reaction mixture effluent comprising sulfuric acid and hydrogen bromide, c) separating the reaction mixture effluent obtained in step b) into one or more hydrogen bromide-enriched compositions and one or more sulfuric acid-enriched compositions, where at least one hydrogen bromide-enriched composition contains up to 1,000 ppm sulfuric acid, where step c) comprises at least two distillation steps, d) separating the reaction mixture effluent obtained in step c) containing up to 1,000 ppm sulfuric acid, at least a portion of the at least one hydrogen bromide-enriched composition comprising at least one hydrogen bromide-enriched composition comprising at least 50,000 ppm sulfuric acid and at least 50,000 ppm sulfuric acid is subjected to electrolysis to obtain hydrogen and a bromine-containing composition wherein the electrolysis cell is operated at an operating temperature of at least 70 DEG C, and e) recycling at least a portion of the bromine-containing composition obtained in step d) back to step a).
Resumen de: EP4563727A2
A method of operating an electrolyzer system includes providing steam from a steam source through a system steam conduit to module steam conduits located in respective electrolyzer modules, controlling a flow rate of the steam through the system steam conduit using a system mass flow controller located on the system steam conduit, providing portions of the steam to the module steam conduits and providing steam in the module steam conduits to respective stacks of electrolyzer cells located in respective hotboxes in the respective electrolyzer modules, and operating the stacks to generate a hydrogen product stream and an oxygen exhaust stream.
Resumen de: AU2023359866A1
The invention relates to a plant network (100) comprising an electrolysis plant (1, 1A, IB), a power supply source (3) with a DC voltage output (7) and a central supply line (5), wherein the central supply line (5) is connected to the DC voltage output (7) of the power supply source (3), so that a direct current can be fed into the central supply line (5) and a central DC network designed for a high voltage is provided to which the electrolysis plant (1, 1A, IB) is connected via the central supply line (5). The power supply source (3) aass a power generator comprises a wind turbine (19) to which a rectifier (13A) with a DC voltage output (7) is connected, wherein the DC voltage output (7) is designed for the high voltage, and wherein a controllable energy storage system (17) is connected to the central supply line (5) which is designed in such a way, that a direct current can be fed into the central supply line (5) by means of the energy storage system (17) as required or can be discharged from the central supply line (5) and fed into the energy storage system (17). A DC supply network is implemented in the plant network (100) that enables application and control of three different DC voltage levels independently, with a first DC voltage provided as a storage battery voltage for charging and discharging an electrical storage battery of the energy storage system (17), with a second DC voltage provided as DC- Bus high voltage on the central supply line (5), and with a third DC
Resumen de: AU2023359996A1
The invention relates to an electrolysis system (1) for generating hydrogen and oxygen as product gases, comprising an electrolysis module (3) and a process unit (5), wherein the process unit (5) has a reactant line (7) for supplying process water and a product line (9), each of which is connected to the electrolysis module (3), and the process unit (5) is equipped with a thermally insulating insulation device (11), comprising a thermal insulating material (17), such that a slow cooling of the process water is produced during a standstill operation.
Resumen de: EP4563523A1
The invention relates to a process (100) for the production of hydrogen from ammonia comprising the following steps:- providing a water feed stream to a water electrolyzer (101);- performing a water electrolysis (102) of the water feed stream in the electrolyzer, producing an oxygen product stream and an electrolysis hydrogen stream;- providing an ammonia feed stream to an ammonia cracking reactor (103);- providing an oxidant stream (105) and performing a combustion reaction (106) with said oxidant stream, thereby generating heat;- in the ammonia cracking reactor, performing an endothermic reaction of ammonia cracking (104) of the ammonia feed stream with said generated heat;characterized in that the oxidant stream comprises at least a portion of the oxygen product stream produced by the water electrolysis of the water feed stream.
Resumen de: US2025171388A1
The disclosure provides a process for producing methanol and hydrogen from methane. The process of the disclosure comprises the steps of: •a) providing a gaseous feed stream comprising methane: •b) reacting said gaseous feed stream with at least one halogen reactant •under reaction conditions effective to produce an effluent stream comprising methyl halide, hydrogen halide •optionally poly halogenated alkanes •and optionally unreacted methane: •c) recovering said an effluent stream •d) reacting the recovered effluent stream with water and at least one organic base under reaction conditions effective to produce an aqueous solution of hydrogen halide •and a methanol stream comprising methanol (MeOH) and dimethyl ether (DME) and/or optionally unreacted methane, and, c) decomposing by means of electrolysis said aqueous solution of hydrogen halide under conditions effective to produce a gaseous hydrogen stream and a stream comprising halogen reactant.
Resumen de: EP4563725A1
Es wird ein Verfahren (100) zur Herstellung eines Syntheseprodukts (6) vorgeschlagen, bei dem gasförmiger Wasserstoff (3) durch Elektrolyse (10) von Wasser (1) bereitgestellt und mit einem oder mehreren gasförmigen Reaktionspartnern (4) einer Umsetzung (30) zu dem Syntheseprodukt (6) unterworfen wird, wobei während eines ersten Verfahrensmodus der Wasserstoff (3) und der eine oder die mehreren Reaktionspartner (4) unter Erhalt eines Reaktionsgemischs (5) vermischt werden und das Reaktionsgemisch (5) oder ein Teil hiervon in einer Speichereinheit (20) druckgespeichert wird, und wobei während eines zweiten Verfahrensmodus das in dem ersten Verfahrensmodus druckgespeicherte Reaktionsgemisch (5) oder ein Teil hiervon aus der Speichereinheit (20) entnommen und der Umsetzung (30) zu dem Syntheseprodukt (6) zugeführt wird. Eine entsprechende Anlage wird ebenfalls vorgeschlagen.
Resumen de: US2025171388A1
The disclosure provides a process for producing methanol and hydrogen from methane. The process of the disclosure comprises the steps of: •a) providing a gaseous feed stream comprising methane: •b) reacting said gaseous feed stream with at least one halogen reactant •under reaction conditions effective to produce an effluent stream comprising methyl halide, hydrogen halide •optionally poly halogenated alkanes •and optionally unreacted methane: •c) recovering said an effluent stream •d) reacting the recovered effluent stream with water and at least one organic base under reaction conditions effective to produce an aqueous solution of hydrogen halide •and a methanol stream comprising methanol (MeOH) and dimethyl ether (DME) and/or optionally unreacted methane, and, c) decomposing by means of electrolysis said aqueous solution of hydrogen halide under conditions effective to produce a gaseous hydrogen stream and a stream comprising halogen reactant.
Resumen de: CN119604644A
A process for producing hydrogen and/or bromine by electrolyzing hydrogen bromide in the electrolysis of hydrogen bromide using a fluoropolymer membrane having a glass transition temperature Tg > = 110 DEG C, wherein the hydrogen bromide is derived from the bromination of hydrocarbons.
Resumen de: EP4563350A1
An electrolysis device configured to produce hydrogen gas from water, the electrolysis device comprising a container (4), the container accommodating an aqueous alkaline solution (5), a cathodic electrode (1), and an anodic electrode (2), an electrical current being selectively applied between the cathodic electrode and the anodic electrode, wherein the cathodic electrode and possibly the anodic electrode, is made of a nickel alloy, with a nickel base alloyed with at least one element chosen among chromium, molybdenum, cobalt and iron, wherein the cathodic electrode and the anodic electrode are manufactured by an additive manufacturing process, from respective first and second mixed metallic powder compounds, wherein the cathodic and anodic electrodes exhibit an outer surface comprising a plurality of first surface patterns (6,7).
Resumen de: EP4564633A1
Disclosed in the present application are a power system and a frequency modulation control method therefor. The method comprises: first, determining whether the current power grid frequency of a power system falls within a preset allowable frequency deviation range; if not, performing calculation according to the current power grid frequency and a power grid rated frequency to obtain an input current change value of a hydrogen production power generation unit in the power system; on the basis of the size relationship between the input current change value and limit values thereof and the size relationship between the changed input current value and limit values thereof, determining a target input current of the hydrogen production power generation unit; and finally, adjusting an input current of the hydrogen production power generation unit according to the target input current, so as to allow the power grid frequency of the power system to fall within the preset allowable frequency deviation range. Therefore, by means of the relationship between system power consumption and frequency fluctuation, the present application can guide input current setting for the hydrogen production power generation unit on the basis of a measured system frequency to achieve frequency modulation control of the power system, thus solving the problem of frequency fluctuation of power grid systems caused by randomness and fluctuation of renewable energy power generation.
Resumen de: EP4563494A1
The present invention provides a container and a hydrogen production system. The container includes a bottom base, an upper cover, a first side plate, and a driving device. The first side plate is arranged between the bottom base and the upper cover, and is connected to the bottom base and the upper cover separately; and the driving device is connected to the first side plate and is configured to drive the first side plate to rotate relative to the bottom base, and the first side plate drives the upper cover to move, to switch the container from a closed state to an open state. The container in the present invention can implement hoisting of a device, so that a process in which the device is placed in the container is simplified, and the design efficiency of the hydrogen production system is improved. In addition, it is convenient for personnel to enter the container for device overhaul and maintenance, thereby effectively resolving the problem of inconvenient maintenance on the device after the device is placed in the container.
Resumen de: EP4563524A1
The present invention relates to a method and device for producing hydrogen by dissociating the water molecule through thermochemical reactions, using a small amount of active material. The thermochemical reactions are induced by solar energy with a moderate concentration of up to 50 suns, which can be achieved through linear or parabolic concentrators.
Resumen de: DK202330316A1
An alkaline electrolyzer comprising a stack (17) of electrolytic cells (1) is used for producing hydrogen gas (8). Each of the cathode compartments (5) comprises a cathode gas outlet (23A) into a cathode electrolyte return conduit (22A), the downstream end (41) of which is connected to a hydrogen purifier (33) configured for providing purified hydrogen gas by removing oxygen from the gas received from the cathode electrolyte return conduit (22A). A cathode gas recirculation system (38) connects a downstream end of the hydrogen purifier (32,33) to an upstream end (40) of the cathode electrolyte return conduit (22A) for supplying purified hydrogen gas to the cathode electrolyte return conduit (22A). Alternatively, or in addition, each of the anode compartments (6) comprises an anode gas outlet (23B) into an anode electrolyte return conduit (22B), the downstream end (41) of which is connected to an oxygen purifier (33), configured for providing purified oxygen gas by removing hydrogen from the gas coming from the anode electrolyte return conduit (22B). An anode gas recirculation system (38) connects a downstream end (41) of the oxygen purifier (33) to an upstream end (40) of the anode electrolyte return conduit (22B) for supplying purified oxygen gas to the anode electrolyte return conduit (22B). By recirculating purified gases through the electrolyte return conduits, the electrolyzer can operated at part load, for example below 10% of the nominal load.
Resumen de: CN119604644A
A process for producing hydrogen and/or bromine by electrolyzing hydrogen bromide in the electrolysis of hydrogen bromide using a fluoropolymer membrane having a glass transition temperature Tg > = 110 DEG C, wherein the hydrogen bromide is derived from the bromination of hydrocarbons.
Resumen de: WO2024023030A2
A method of electrolysing hydrogen bromide comprising the steps i) synthesizing sulfuric acid such that hydrogen bromide is produced, ii) providing an electrolytic cell comprising an anode, a cathode, and a membrane sandwiched between the anode and the cathode, iii) feeding a first composition comprising hydrogen bromide and water to the anode, iv) feeding a second composition comprising hydrogen bromide and water to the cathode, and v) operating the electrolytic cell to produce hydrogen at the cathode.
Resumen de: CN120079416A
本发明属于电池和电解水的电极催化剂技术领域，公开了一种ZnS/Co异质结复合氮硫掺杂碳材料及其制备方法与应用，将ZnS纳米球与ZIF‑67按质量比为1:1~1:30混合均匀，在600~1000℃煅烧即得。制得复合材料由均匀分散于氮硫掺杂碳基体中的硫化锌/钴纳米颗粒异质结构组成，其中，细小的硫化锌纳米颗粒包覆于大尺寸的钴纳米颗粒表面，形成核壳异质结构；所述硫化锌纳米颗粒的直径为2~5 nm，钴纳米颗粒有两种尺寸，大尺寸为20~100 nm，小尺寸为2~10 nm；氮硫掺杂碳为类十二面体结构，其直径为200~500 nm。将该复合材料用作液态可充电锌空气电池的正极催化剂时，充放电性能具有明显优势；用作AEM电解水阳极催化剂时，性能优于商业铂碳和二氧化钌，且稳定运行超过600小时。
Resumen de: CN120079208A
本发明公开了一种电解水制氢高效自动干燥装置及其使用方法，包括筒体，所述筒体顶部设有封盖、气水过滤器，所述筒体内侧底部设有排水组件；所述筒体底部设有排水口，所述筒体的两侧设有进气口及出气口，所述排水组件包括压块、刮水组件，所述压块底部设有密封组件，所述排水口下方设有安装管，所述筒体外部安装有支撑组件；本发明通过气水过滤膜和冷凝管的双重过滤，能够高效去除气体中的水分，确保干燥效果；排水组件和移动排水管的设计实现了自动排水功能，减少操作复杂性；刮水组件的设置可以大大减少筒体内壁上残留的水汽，且底部移动排水管的设置可以进一步减少筒体底部残留的液体，确保筒体内部干燥，保证输出的气体质量。
Resumen de: CN120081346A
本申请涉及电催化剂催化能源转化领域，具体公开了一种富氧空位铬离子掺杂磷酸镍纳米花及其制备方法与应用。该制备方法包括以下步骤：S1、将六水合硝酸镍、九水合硝酸铬、尿素、酒石酸钠和聚乙二醇溶于水中，然后进行加热反应；S2、将步骤S1制得的铬离子掺杂氢氧化镍纳米花与次亚磷酸钠混合并均匀分散于水中，然后经过冷冻干燥和密封煅烧；S3、将步骤S2制得的铬离子掺杂磷酸镍纳米花在通入惰性放电气体的条件下进行等离子体反应，得到富氧空位铬离子掺杂磷酸镍纳米花。该富氧空位铬离子掺杂磷酸镍纳米花具有较高的导电性和表面活性，能够降低过电位，促进水分解反应的动力学过程，减少能量损耗，提升电解水制氢的效率。
Nº publicación: CN120082919A 03/06/2025
Solicitante:
贵州乌江水电开发有限责任公司武汉科技大学
Resumen de: CN120082919A
本发明公开了一种钼镍合金‑氧化镍自支撑催化剂及其制备方法与应用，其制备方法包括将镍金属基片加入含Mo盐和尿素的混合溶液中进行溶剂热反应，镍基体的溶出提供Ni源并与Mo盐反应，在镍基体原位生长钼镍氧纳米片组成的纳米花瓣。而后将前驱体置于还原性气氛下进行保温反应，即得所述钼镍合金‑氧化镍自支撑复合析氢催化剂。该自支撑结构无需添加粘结剂有助于提升催化剂大电流循环稳定性，原位析出的方式极大的增加了MoNi4合金颗粒在NiO纳米片基体表面的分散度，提升了催化剂的导电性，并获得高的表面积和丰富的高活性的MoNi4‑NiO复合界面，同时异质界面的强电子耦合作用优化了MoNi4合金表面的氢吸附能和NiO表面的水解离活性，显著提升复合催化剂的碱性析氢活性。
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