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390
resultados
Última actualización
24/08/2025 [07:02:00]
Resultados 300 a 325 de 390
Resumen de: CN115485066A
A catalytic material and a method of making the catalytic material are described. The use of the catalytic material in catalyzing ammonia decomposition processes is also described. The catalytic material comprises a metal oxide and a metal M selected from the group consisting of Ru, Fe, Co, Mo, and mixtures of two or more thereof, and is particularly active in the catalytic decomposition of ammonia, even at low temperatures.
Resumen de: CN120222428A
The invention provides an electricity-hydrogen coupling intelligent regulation and control method and system considering a wind-solar prediction error, and relates to the technical field of electric power, and the method comprises the steps: collecting wind-solar historical power generation data, and obtaining prediction error probability distribution based on adaptive combination kernel density estimation; the distribution serves as an uncertainty constraint, a dual neural network is adopted to execute deep reinforcement learning, an action value network dynamically adjusts a decision space, and a target network evaluates risks and restrains decisions based on conditional risks and state values; a distributed collaborative network is constructed, and hydrogen production power and hydrogen desorption power are controlled in real time based on a dynamic consistency theory and a synchronous potential function. The operation stability and economical efficiency of the electricity-hydrogen coupling system are improved, and the uncertainty of wind and light power generation is effectively dealt with.
Resumen de: CN120210863A
The invention belongs to the field of new energy and water electrolysis hydrogen production, and relates to a foamed Ni-high-entropy alloy catalyst and a preparation method and application thereof. The foam Ni-high-entropy alloy catalyst comprises foam Ni, a high-entropy alloy and metal Ni, wherein the high-entropy alloy and the metal Ni are loaded on the surface of the foam Ni, and according to the foam Ni-high-entropy alloy catalyst, the foam Ni and the high-entropy alloy are integrated through the metal Ni. The preparation method comprises the following steps that high-entropy alloy metal powder and Ni metal powder are added into a wet mixing agent A to be subjected to first-time ball-milling mixing, and a mixture A is obtained; adding a wet mixing agent B into the mixture A, mixing, carrying out secondary ball-milling mixing to obtain a mixture B, filtering the mixture B, and reserving a liquid part to obtain an impregnation liquid; soaking foamed nickel in the steeping liquor, and then drying and sintering to obtain the foamed nickel-high-entropy alloy catalyst. The preparation method provided by the invention is simple to operate, and saves time and economic cost.
Resumen de: CN120210832A
The invention relates to the technical field of wind-solar power generation hydrogen production, in particular to a wind-solar combined water electrolysis hydrogen production method and system.The method comprises the steps that output power data of wind power generation equipment and photovoltaic power generation equipment and input power data of an alkaline electrolytic bath are collected, and the collected data are preprocessed; respectively acquiring comprehensive adjustment coefficients of the wind power generation equipment and the photovoltaic power generation equipment; and determining the disturbance step length of the corresponding power generation equipment in the maximum power point tracking algorithm based on the perturbation and observation method at the current moment by using the comprehensive adjustment coefficient. The invention aims to dynamically adjust the disturbance step length, prevent the output power from wandering near the maximum power point to generate oscillation, and improve the stability and hydrogen production efficiency of a hydrogen production system.
Resumen de: CN120210842A
The invention provides an electro/thermochemical gradient hydrogen production system and method for solar radiation energy grading and residual light energy thermal complementary coupling. The system comprises a light condensation assembly; the frequency division assembly is used for grading solar spectrum radiation; a photovoltaic cell power generation device; the methane oxygen-enriched combustion high-temperature photovoltaic power generation device is used for realizing oxygen-enriched combustion of natural gas by utilizing residual heat heat energy and generating power by utilizing radiation energy generated by high-temperature flue gas generated after combustion; the solid oxide electrolytic tank device is used for pushing solid oxide to electrolyze water to produce hydrogen by utilizing heat energy and electric energy contained in the high-temperature flue gas step by step; and the thermal chemical reaction device is used for promoting each step of thermal chemical reaction by utilizing heat energy and electric energy contained in the high-temperature flue gas step by step. The energy source of the system is solar radiation and natural gas, hydrogen and electricity are produced, the system utilizes different energy conversion modes to achieve temperature gradient ordered conversion and utilization of residual light energy after solar frequency division, and complementary coupling of different qualities is achieved on the basis of energy gradient conversion.
Resumen de: WO2025135565A1
The present invention relates to a composite water electrolysis system using nuclear power plant heat and electrical energy, and, to a composite water electrolysis system for receiving heat energy and electrical energy generated in each of a plurality of SMRs, the system comprising: a heat energy storage hub for storing the heat energy generated in each of the plurality of SMRs; an electrical energy storage hub for storing electrical energy generated in each of the plurality of SMRs; and a composite hydrogen production unit, which receives heat and electricity from the heat energy storage hub and the electrical energy storage hub so as to generate hydrogen and oxygen. According to one embodiment, technologies such as hydrogen production through high-temperature water electrolysis, low-temperature water electrolysis, and ammonia decomposition are diversified, hydrogen and oxygen produced through high-temperature water electrolysis are in a high-temperature state, and the waste heat energy discarded when hydrogen and oxygen are cooled to a low temperature in order to be stored can be used as an additional heat source of low-temperature water electrolysis and ammonia hydrogen decomposition devices.
Resumen de: EP4574255A1
In a method of preparing an ammonia decomposition catalyst according to embodiments of the present disclosure, a mixture of a metal oxide including lanthanum and a heterogeneous metal and aluminum oxide is prepared, the mixture was subj ected to steam treatment to form a carrier, and an active metal is supported on the carrier to prepare an ammonia decomposition catalyst. The ammonia decomposition catalyst according to embodiments of the present disclosure is prepared by the above-described preparation method.
Resumen de: KR20250096033A
본 발명은 산화물 담체를 준비하고, 암모니아 분해촉매 합성을 위해 니켈과 마그네슘의 전구체 용액을 준비하고, 상기 전구체 용액을 상기 담체에 함침하고, 공기중에서 700 ~ 1000℃의 온도로 1 ~ 10시간 동안 열처리하여 상기 전구체 용액으로부터 니켈 마그네슘 산화물 고용체를 생성하여 상기 담체에 니켈 마그네슘 산화물 촉매층을 형성하고, 상기 니켈 마그네슘 산화물 촉매층이 형성된 담체를 환원분위기에서 500 ~ 900℃의 온도로 2 ~ 10시간 동안 열처리하여 상기 니켈 마그네슘 산화물 촉매층으로부터 금속 니켈 촉매를 석출시키는 단계를 포함하는 암모니아 분해촉매 제조방법을 제공한다.
Resumen de: KR20250096137A
선박의 질소공급시스템이 개시된다. 본 발명의 선박의 질소공급시스템은, 선박에 마련되며 암모니아를 공급받아 선내 수소 수요처로 공급될 수소를 생성하는 암모니아 개질부; 상기 암모니아 개질부에서 수소 생성 후 발생하는 테일가스(tail gas)를 상기 암모니아 개질부로부터 공급받아 질소를 분리하는 질소분리부; 및 상기 질소분리부에서 분리된 질소를 저장하는 질소버퍼탱크:를 포함하고, 상기 질소버퍼탱크의 질소는 선내 질소 수요처로 공급되는 것을 특징으로 한다.
Resumen de: CN120210887A
The invention provides a titanium-based catalytic anode for water electrolysis hydrogen production and a preparation method thereof.The titanium-based catalytic anode comprises a titanium substrate and a catalytic layer covering the surface of the titanium substrate, and the catalytic layer is a slurry coating formed by mixing cerium-zirconium solid solution powder and a noble metal catalyst; or the catalyst layer is formed by depositing a cerium-zirconium solid solution loaded with a noble metal catalyst on the surface of the titanium substrate. The cerium-zirconium solid solution has high catalytic activity, can provide abundant defect sites and active sites, and is beneficial to the generation of catalytic reaction; and the cerium-zirconium solid solution can also optimize the surface property of the noble metal catalyst and improve the adsorption and conversion efficiency of reactants, so that the catalytic performance of the titanium-based catalytic anode is remarkably improved.
Resumen de: CN120221723A
The invention discloses an off-grid hydrogen-electricity complementary energy supply system suitable for a plateau and an energy supply method thereof. The system comprises a renewable energy power generation and energy storage system, a water electrolysis hydrogen and oxygen production system, a fuel cell combined heat and power supply system, a user power supply system, a user oxygen supply system and a user heat supply system. The electric energy output end of the renewable energy power generation and storage system is connected with the water electrolysis hydrogen and oxygen production system and the user power supply system through cables. The water electrolysis hydrogen and oxygen production system is respectively connected with the user oxygen supply system and the fuel cell heat and power cogeneration system through pipelines; the power supply output end of the fuel cell combined heat and power supply system is connected with the user power supply system, and the heat supply output end of the fuel cell combined heat and power supply system is connected with the user heat supply system. According to the invention, a combined power supply and multi-demand supply system with zero-carbon energy input is realized, and the problem that renewable energy power and consumption in plateau areas are not matched in time and space is solved.
Resumen de: CN120225638A
The invention relates to a device/method for capturing/converting CO2. The present invention relates to a process for producing CO and water, comprising/using a CO2 capture unit (2) that produces a CO2-rich effluent (3), a water electrolysis unit (5) that converts water (4) into oxygen (6) and hydrogen (7), an RWGS unit (8) that treats the CO2-rich effluent with hydrogen (7) and produces an RWGS gas (9) enriched in CO and water, an FT unit (13) that converts the RWGS gas and produces an FT effluent (14), a first separation unit (15) that treats the FT effluent and produces a hydrocarbon effluent (17) and a gas effluent (33), a second separation unit (34) separating the first gas (33) producing a CO2-lean gas (18) and a CO2-rich gas (35) fed to the RWGS unit, a hydrogen unit (20) treating the hydrocarbon effluent to produce a hydrocarbon fraction (21).
Resumen de: CN120222394A
The invention discloses an optimized operation method of a grid-connected wind power hydrogen production system considering operation characteristics of an electrolytic cell. Firstly, whether a wind power plant meets grid-connected fluctuation requirements is obtained and judged; extracting a wind power output power grid-connected component and a fluctuation component from the original wind power which does not meet the requirement by adopting a wavelet packet decomposition method; an electrolytic cell array and other flexible resources are introduced to stabilize wind power fluctuation, and a PEMEL electrolytic cell start-stop operation strategy is formulated; and finally, constructing an operation constraint model of the wind power hydrogen production system, and realizing optimized operation of the wind power hydrogen production system based on the formulated electrolytic cell start-stop operation strategy. Based on the energy efficiency characteristics of the electrolytic cell, the method can effectively improve the hydrogen production efficiency of the electrolytic cell, thereby improving the overall benefit of the system. The adopted electrolytic cell starting and stopping strategy can be suitable for electrolytic cell array hydrogen production in multiple scenes, and under the condition that the requirement for stabilizing wind power fluctuation is met, the system operation hydrogen production income and the system overall hydrogen production efficiency serve as evalua
Resumen de: CN120210882A
The invention relates to an Ir-loaded nickel-vanadium nitride and a preparation method and application thereof, the Ir-loaded nickel-vanadium nitride comprises a vanadium modified Ni3N carrier and precious metal Ir loaded on the vanadium modified Ni3N carrier, and the Ir-loaded nickel-vanadium nitride is of a multi-composite structure on the whole. The preparation method of the Ir-loaded nickel-vanadium nitride comprises the steps of hydrothermal reaction, plasma activation treatment, Ir loading, ammoniation and the like. The preparation method comprises the following steps: firstly, modifying a Ni3N carrier, optimizing an electronic structure of Ni3N by utilizing a vanadium element, and improving the adsorption and cracking capability of the Ni3N to water molecules, so that the Ni3N carrier becomes an excellent hydrogen evolution catalyst; then, the hydrogen evolution activity of the catalyst is further improved by loading low-content noble metal Ir on the modified Ni3N carrier; the prepared low-load Ir nickel-vanadium nitride is an alkaline hydrogen evolution catalyst with high catalytic activity, and can reduce hydrogen production energy consumption and cost when being applied to the field of hydrogen production by water electrolysis.
Resumen de: CN120210844A
The invention discloses a quick energy-saving starting device for an electrolytic bath, which comprises a water electrolysis hydrogen production subsystem and a circulating hot water station heat pump subsystem, the hydrogen production subsystem comprises an electrolytic bath, an oxygen gas-liquid separator, a hydrogen gas-liquid separator, an oxygen multi-channel alkali liquor heat exchanger, a hydrogen multi-channel alkali liquor heat exchanger, an oxygen alkali liquor circulating pump and a hydrogen alkali liquor circulating pump, and the heat pump subsystem comprises a circulating hot water station, a hydrogen compressor, an oxygen compressor, a hydrogen cooler and an oxygen cooler. The oxygen multi-channel alkali liquor heat exchanger and the hydrogen multi-channel alkali liquor heat exchanger are provided with circulating water channels, hot water channels and alkali liquor channels, cooling and heating functions are integrated, when the electrolytic bath operates, hot alkali liquor is cooled through circulating water, and when the electrolytic bath is in a standby state, the hot alkali liquor is cooled through hot water. The waste heat of the electrolytic bath system is used for maintaining the temperature of the cold alkali liquor so as to ensure quick start of the electrolytic bath. The power consumption in the starting process of the electrolytic cell is reduced, the operation cost is reduced, and the starting time of the electrolytic cell is shortened.
Resumen de: CN120207529A
The invention discloses a renewable energy water electrolysis hydrogen production buoy platform based on an efficient catalyst, and belongs to the technical field of seawater hydrogen production, the renewable energy water electrolysis hydrogen production buoy platform comprises an electrolyte supply module, a water electrolysis hydrogen production module, a multi-element coupling power generation module and an energy storage module, the electrolyte supply module is composed of an electrolyte evaporation chamber and an electrolyte storage chamber, the water electrolysis hydrogen production module is located on the upper portion of the electrolyte supply module, the multi-element coupling power generation module is arranged on the upper side of the electrolyte supply module, and the energy storage module is composed of a hydrogen storage tank and a storage battery. According to the invention, solar energy and wind energy are used as energy sources to heat, evaporate, condense and collect seawater without fossil fuel, and meanwhile, the water electrolysis hydrogen production module is autonomously designed, so that the seawater hydrogen production efficiency is greatly improved, the cost is greatly reduced, and the system has the advantages of energy conservation, emission reduction, environmental protection, multi-energy complementation, high fresh water production efficiency and the like, and realizes solar energy, energy conservation and environmental protection. And wind en
Resumen de: CN120210843A
The invention relates to the technical field of hydrogen production through water electrolysis, and aims to solve the technical problem that energy in high-temperature and high-pressure associated gas is not fully utilized, so that energy is wasted. A solid oxide electrolysis hydrogen production device comprises a combustor, a heating assembly and an electrolysis module, the combustor is used for heating water and generating water vapor, and the heating assembly is used for heating the water vapor; the heating assembly is used for further heating the water vapor, the heated water vapor is electrolyzed through the solid oxide electrolysis module, and then hydrogen is prepared; furthermore, the specific structure of the combustor comprises an associated gas inlet, an air inlet and a water injection port, the associated gas inlet is used for introducing associated gas with the original temperature, the air inlet is used for introducing air, the water injection port is used for introducing water, and the associated gas can be combusted in the combustor and heat the water introduced from the water injection port to generate water vapor. The combustor is used for replacing a traditional steam generator with high price, the production cost of an enterprise can be greatly reduced, and meanwhile energy in associated gas can be recycled.
Resumen de: CN120210841A
The invention relates to the technical field of hydrogen preparation, in particular to a high-pressure hydrogen preparation device which comprises a preparation tank, a conducting rod with a positive electrode and a negative electrode is arranged in the preparation tank, a plurality of electrode plates are stacked on the conducting rod, an output pipe extending outwards is arranged at the top of the conducting rod, and a plurality of conical seats are arranged on the electrode plates. A longitudinally-through taper hole is formed in the taper seat, a power pressurization piece is arranged on the upper side of the taper hole and used for high-voltage circulation of electrolyte among the multiple layers of electrode plates, the same elastic connecting seat is arranged between the conducting rod and the electrode plates, and an ultrasonic vibration piece is arranged at the lower end of the conducting rod and used for improving the liquidity of the electrolyte. The stripping rate of bubbles and the electrode is improved, and the multiple conical bases are evenly distributed on the electrode plate. According to the high-pressure hydrogen preparation device, stacking use of multiple layers of electrode plates is facilitated, the fluidity of internal electrolyte is improved, and the gas outlet efficiency of the device is improved.
Resumen de: CN120214216A
The invention provides a multi-source remote sensing data-based water electrolysis hydrogen production carbon emission quantification method and device, and belongs to the field of atmosphere quantitative remote sensing, multi-source data and carbon emission quantification, nitrogen oxide is used as indication gas of carbon dioxide emission, and the method comprises the following steps: obtaining high-precision power plant position information; based on the position information of the high-precision power plant, a cooperative relation between pollutant emission and carbon emission is established; based on the cooperative relationship, utilizing an index to correct a Gaussian model, and obtaining the relationship between the observed carbon-related data and the carbon emission of the power plant; the carbon emission of each unit of hydrogen in the water electrolysis hydrogen production process is quantified by calculating the electric quantity required for preparing the unit of hydrogen and the carbon emission of the unit of generating capacity. According to the invention, high-precision quantification of carbon emission in a power plant and a water electrolysis hydrogen production process is realized, and technical support is provided for carbon emission monitoring and low-carbon technology application.
Resumen de: CN120211902A
The invention provides a solar energy and natural gas complementary coupling copper-chlorine recycle hydrogen/electricity co-production system and method. The system comprises a light condensation assembly used for enhancing the solar radiation intensity; the methane oxygen-enriched combustion high-temperature photovoltaic power generation device is used for realizing oxygen-enriched combustion by using natural gas and generating power by using radiation energy generated by first-stage high-temperature flue gas generated after combustion; the supercritical carbon dioxide Brayton cycle device is used for pushing power cycle power generation by utilizing heat energy contained in the second-stage high-temperature flue gas; and the thermal chemical reaction device is used for utilizing heat energy contained in the third-stage, fourth-stage and fifth-stage high-temperature flue gas to promote thermal chemical reaction in each step. Energy sources of the system are solar radiation and natural gas, and hydrogen and electricity are produced. Low-grade solar energy and natural gas are complementary, the energy grade is improved, based on the energy quality matching principle, electric/thermal energy of different qualities is supplied into thermochemical circulation in stages to prepare hydrogen, complementary coupling of energy of different qualities is achieved on the basis of energy cascade conversion, and the energy conversion efficiency is improved. And an efficient solar hydrogen
Resumen de: CN120210847A
The invention provides a preparation method of a nickel-iron-tungsten oxygen evolution electrode, and belongs to the technical field of hydrogen energy. The method comprises the following steps: by taking a nickel-iron alloy matrix as a working electrode, carrying out electrochemical oxidation-reduction activation treatment at room temperature in a mixed solution of tungstate, nitrate and chloride, and then carrying out heat treatment on the nickel-iron alloy matrix. In the electrochemical oxidation process, nickel ions and iron ions are dissolved out of the nickel-iron alloy matrix, meanwhile, electrochemical oxidation of chloride ions is carried out to form active chlorine, and the nickel ions and the iron ions are further chemically etched out; in the electrochemical reduction process, nitrate radicals and water on the electrode are reduced to generate hydroxyl radicals; in the process, nickel and iron ions on the electrode are combined with tungstate radicals and hydroxyl radicals to form a nickel-iron-tungsten composite hydroxide; and a nickel-iron-tungsten composite oxide is formed in the subsequent heat treatment process, so that the oxygen evolution activity and stability are further improved.
Resumen de: CN120210855A
The invention belongs to the field of new energy and water electrolysis hydrogen production, and relates to a cobalt phosphide self-supporting material and a preparation method and application thereof, the preparation method comprises the following steps: 1) mixing water, organic alcohol and a surfactant to form a solution A; mixing water, organic alcohol and cobalt salt to form a solution B; mixing the solution A, the solution B and an organic solvent, standing the mixed solution, and taking the supernatant after the mixed solution is layered to obtain a Co precursor micelle solution; and (2) dripping the Co precursor micelle solution in the step (1) on a conductive substrate, forming a Co precursor micelle-conductive substrate after the organic solvent is volatilized, and carrying out phosphating reaction on the Co precursor micelle-conductive substrate and a phosphorus source at high temperature in a protective atmosphere to obtain a CoP-conductive substrate catalyst, namely the cobalt phosphide self-supporting material. The cobalt phosphide self-supporting material has multiple active sites, and can be used as a catalyst for an HER reaction to reduce the overpotential of the HER reaction.
Resumen de: CN120210630A
The invention relates to the field of water electrolysis hydrogen production, in particular to a NiCoCrFeAl high-entropy alloy coating material and a preparation method and application thereof. The NiCoCrFeAl high-entropy alloy coating material comprises a stainless steel base body and a NiCoCrFeAl high-entropy alloy coating growing on the stainless steel base body, and the NiCoCrFeAl high-entropy alloy coating is prepared from the stainless steel base body, the NiCoCrFeAl high-entropy alloy coating material is of a nanoflower array structure, and the NiCoCrFeAl high-entropy alloy coating is obtained through in-situ growth on the surface of stainless steel with a FeOOH and NiOOH nanoflower structure. According to the method, the stainless steel is pretreated by adopting a strong oxidant, the surface of the stainless steel is oxidized into FeOOH and NiOOH with nanoflower structures by utilizing Ni and Fe elements of the stainless steel, the surface area of the electrode is effectively increased, and the nanostructure is beneficial to hydrogen removal and reduction of hydrogen evolution overpotential.
Resumen de: CN120210864A
The invention relates to a composite material and a preparation method and application thereof, and belongs to the technical field of electrolytic hydrogen production. The composite material comprises a La-based perovskite material and a composite material of oxides of VIB group elements, according to the composite material, the VIB group elements have various valence states, and the valence states of common oxidants of the VIB group elements comprise + 6 and + 4, so that the composite material has certain valence changing capacity, has better interaction with active oxygen, and assists in completing the oxidation process of oxygen ions; and the interface member of the oxide of the VIB group element and the La-based perovskite material can change the electronic structure of the surface of the La-based perovskite material, so that the oxygen evolution reaction activity of the La-based perovskite material is improved, and the purpose of improving the poor catalytic activity of the La-based perovskite material is achieved.
Nº publicación: CN120210884A 27/06/2025
Solicitante:
CNPC SHENZHEN NEW ENERGY RES INSTITUTE CO LTD
PETROCHINA COMPANY LTD
KUNLUN SHUZHI TECH CO LTD
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Resumen de: CN120210884A
The invention belongs to the technical field of new energy and water electrolysis hydrogen production, and relates to a hydrogen evolution catalyst and a preparation method and application thereof. The preparation method comprises the following steps: 1) dissolving a tungsten salt, a zinc salt and an oxide in an alkaline solution to obtain a mixed solution; (2) carrying out hydrothermal reaction on the mixed solution in the step (1) to prepare zinc-doped tungsten trioxide powder; and 3) dispersing the zinc-doped tungsten trioxide powder in a dispersing agent, and adding platinum salt for hydrothermal reaction to obtain the platinum-loaded tungsten trioxide catalyst. The preparation method comprises the following steps: preparing Zn-doped WO3 powder by utilizing a hydrothermal reaction, and then preparing Pt nano-particle loaded WO3 powder through ion exchange; the expensive precious metal material with limited yield is replaced by the cheap transition metal material, and the production cost of the electrolyzed water is reduced; in addition, the hydrogen evolution catalyst provided by the invention has high catalytic activity, and can reduce electrolysis energy consumption in a water electrolysis hydrogen production reaction.
BOPI
Sede Electrónica
