4793results about "Hydrogen" patented technology

The invention relates to a preparation method of a flexible solid hydrogen storage bed body, which comprises the following steps: S1, mixing 74-90% by mass of hydrogen storage alloy powder and 3-16% by mass of carbon-based heat conduction material for 20-50 minutes in a mechanical stirring manner to obtain a dry powder mixture; s2, adding an organic silicon material with the mass fraction of 5-16%, and continuously mechanically stirring for 1-5 hours to obtain a non-dry powder mixture; and S3, carrying out vacuum drying on the non-dry powder mixture in the S2 at 60-100 DEG C for 8-20 hours, and naturally cooling to room temperature to obtain the required novel non-dry powdery hydrogen storage bed body. Through the synergistic effect of the hydrogen storage alloy, the expanded graphite and the double-liquid silica gel, the flexible solid hydrogen storage material is formed on the basis of optimizing the material ratio and the process sequence. The synergistic effect of the materials breaks through the defect that a traditional hydrogen storage bed body is too high in rigidity or in a loose powder state, and finally the hydrogen storage bed body has high hydrogen storage efficiency, stable cycle life and excellent safety performance.

The invention relates to the technical field of hydrogen storage and release, and discloses a cyclic hydrogen storage and release system based on aromatic cycloalkane reaction, which comprises a hydrogenation reaction unit, a dehydrogenation reaction unit, a gas-liquid separation and compression unit and an adsorption and purification unit which are sequentially connected through pipelines, the hydrogenation reaction unit, the dehydrogenation reaction unit and the gas-liquid separation and compression unit are respectively connected with the heat exchange unit; the hydrogen storage function and the hydrogen desorption function are integrally designed, the microwave heat supply dehydrogenation reactor is designed for the dehydrogenation reaction link with high energy consumption, and compared with the prior art, the microwave heat supply dehydrogenation reactor has the advantages that the heat transfer resistance is reduced, the reaction efficiency is improved, and the energy loss is reduced. The designed gas-liquid separation and adsorption purification technology is coupled, only one compressor is used in the whole process, the purification process is effectively simplified, the operation is simple and convenient, the equipment cost and the hydrogen purification cost are reduced, and the hydrogen yield and the hydrogen storage carrier cyclic utilization rate are improved. The system has the advantages of high hydrogen storage and release efficiency, small system size, high mobility and the like.

The invention discloses a carbon nitride-based composite material as well as a preparation method and application thereof. The carbon nitride-based composite material comprises a non-metal doped carbon nitride carrier and a noble metal, wherein the noble metal exists in the carrier in an element doping form and / or is loaded on the carrier in an oxide form; the precious metal is one or more of Pt, Pd, Au and Ru, and the nonmetal is one or more of P, S and I. According to the carbon nitride composite material disclosed by the invention, noble metal is utilized to modify carbon nitride, the number of surface active sites is increased, the electron and chemical structures of an active center are adjusted, and meanwhile, generation and migration of photo-generated charges are promoted. Meanwhile, the surface of the carbon nitride composite material is modified by non-metallic elements, so that adsorption and activation of reactant H2O molecules are effectively promoted. The catalyst disclosed by the invention is simple in preparation process, good in repeatability and easy for large-scale production.

The invention discloses a catalyst for hydrogen production through tar steam reforming and a preparation method and application thereof. The catalyst comprises a cobalt-magnesium-aluminum composite spinel carrier and an active component loaded on the cobalt-magnesium-aluminum composite spinel carrier, the active component comprises nickel and at least one metal additive selected from iron, zirconium and ruthenium. The preparation method mainly comprises the following steps: preparing the carrier by adopting a coprecipitation method, loading the active component by adopting an impregnation method, and drying and reducing to obtain the final catalyst. The catalyst is used for tar component steam reforming hydrogen production reaction, especially for treating raw materials containing phenol and water vapor at 600-700 DEG C, tar conversion can be efficiently catalyzed, product gas rich in hydrogen can be generated, hydrogen selectivity is high, and almost no methane is generated. The catalyst has the advantages of high activity, good stability, strong carbon deposition resistance and the like, and is suitable for purification and high-value utilization of biomass pyrolysis tar.

The invention discloses a method for performing tar steam reforming by coupling low-temperature plasma with a nickel-loaded hydrogen type molecular sieve composite catalyst. The method comprises the following steps: preparing the nickel-loaded hydrogen type molecular sieve composite catalyst; the mass of Ni in the nickel-loaded hydrogen type molecular sieve composite catalyst accounts for 5-30% of the mass of the catalyst; introducing tar and water vapor into a dielectric barrier discharge plasma reactor filled with the nickel-loaded hydrogen type molecular sieve composite catalyst; starting the dielectric barrier discharge plasma reactor, and carrying out a tar steam reforming reaction; wherein the temperature of the tar steam reforming reaction is 150-525 DEG C, and the power of the tar steam reforming reaction is 30-90 W. The catalyst disclosed by the invention is coupled with a low-temperature plasma technology, so that good tar reforming performance, target product selectivity and system stability are realized.

The invention discloses a high-porosity organic salt framework confinement nano-metal hydrogen storage material and a preparation method thereof, and belongs to the field of new energy materials. The material takes a carboxylic acid organic salt framework (POS-1) as a carrier, the specific surface area of the material is 1520 m < 2 > / g, the pore size distribution is 1.8-2.5 nm, nano Mg / Ni particles (the average particle size is 3.2 + / -0.5 nm) are confined in pores through a gradient loading and in-situ reduction technology, and an atomic layer deposition (ALD) is adopted to modify a Pd nano catalyst (the loading capacity is 0.48 wt%). The reversible hydrogen storage capacity of the material at room temperature reaches 5.8 wt%, the hydrogen desorption temperature is lower than 80 DEG C, and the capacity retention ratio is larger than or equal to 92% after 100 times of circulation. The preparation method comprises the steps of organic salt framework synthesis, metal precursor gradient loading, low-temperature reduction (250 DEG C), hydrogenation activation and the like, the process is simple and controllable, and the catalyst is suitable for scenes such as a vehicle-mounted hydrogen storage system.

The invention discloses an alkaline earth metal modified aluminum oxide loaded nickel-based catalyst as well as preparation and application thereof. The alkaline earth metal modified aluminum oxide loaded nickel-based catalyst comprises a nanofiber-shaped gamma-Al2O3 carrier, Ni and alkaline earth metal oxide, wherein the Ni and the alkaline earth metal oxide are loaded on the carrier; the alkaline earth metal is at least one of Mg and Ca. The invention provides application of the alkaline earth metal modified aluminum oxide loaded nickel-based catalyst in a methane dry reforming reaction or a methane cracking reaction. The thermal stability and the carbon deposition resistance of the catalyst can be effectively improved, and the catalyst has good catalytic performance in a methane dry reforming reaction and a methane cracking reaction.

A fuel reforming system for a vehicle includes a reciprocating engine mounted on a vehicle, a decomposer that decomposes a hydrocarbon fuel into carbon and a hydrogen gas and that stores the carbon, a hydrocarbon fuel supply unit that supplies the hydrocarbon fuel to the decomposer, and a hydrogen gas supply unit that supplies the hydrogen gas into a cylinder. The reciprocating engine performs a cycle including a compression stroke, an expansion stroke, and a re-compression stroke. The decomposer decomposes the hydrocarbon fuel into the carbon and the hydrogen gas utilizing the heat and the pressure of a combustion gas in the re-compression stroke. The decomposer includes a catalyst to which the carbon adheres and a water vapor adsorption portion in which water vapor is adsorbed.

A preparation method of a Ni-based high-entropy oxide catalyst and its application in the preparation of syngas by carbon dioxide (CO2) reforming of methane (CH4) is provided, and it relates to the technical field of preparation of environmental catalytic materials. The catalyst is prepared by high-energy ball milling method. Using reversible Ni particles with high content as the active site of CH4 gas, other metals introduced by high-entropy strategy greatly reduce the carbon generated from CH4 cracking while activate CO2. The prepared catalyst not only effectively overcomes the problem of poor stability of the Ni-based catalyst in CO2 reforming of CH4, but also promotes activation of CO2 and improves the efficiency of CO2 reforming of CH4 reaction. The provided preparation method of the high-entropy oxide catalyst is simple, stable, economical and reliable, and has a good development prospect in the industrial application field of CO2 reforming of CH4 technology.

The invention belongs to the technical field of solid hydrogen storage, and particularly relates to a Ti-Fe-Mn-Ce-Zr-based hydrogen storage alloy high in volume capacity and easy to activate and a preparation method of the Ti-Fe-Mn-Ce-Zr-based hydrogen storage alloy, the specific composition of the hydrogen storage alloy is Ti < 1 > Fe < 0.9 > Mn < 0.1 > Ce < x > Zr < y >, x is any one of 0.02, 0.04 and 0.06, and y is any one of 0.02 and 0.06. By optimizing alloy components, transition elements Mn and Zr and a rare earth element Ce are added into the AB type hydrogen storage alloy TiFe, the rare earth element Ce exists in the form of an independent phase, and the transition elements Zr and Mn partially replace elements on the A side and the B side respectively, so that second phases Ce, CeO and ZrMn2 appear in a TiFe matrix, and the activation performance of the Ti-Fe-based alloy is remarkably improved.

The invention belongs to the technical field of underground hydrogen storage, and particularly relates to a method for improving underground hydrogen storage capacity by stabilizing hydrogen foam through a porous carbon material, which comprises the following steps: step 1, preparing a hydrophobic modified porous carbon material: preparing the porous carbon material by using biomass waste as a raw material through a carbonization-activation process; carrying out hydrophobic modification treatment on the porous carbon material to enable the water contact angle of the material to reach more than 90 degrees; step 2, preparing a surfactant solution; step 3, preparing a porous carbon-surfactant composite system; and fourthly, hydrogen foam is generated and injected, wherein hydrogen and the porous carbon-surfactant composite system are fully mixed according to the gas-liquid volume ratio of 1: 1-10: 1, and then the mixture is injected into the stratum. By means of the method, the stability of hydrogen foam can be remarkably improved, the hydrogen storage efficiency and the hydrogen recovery rate are improved, and therefore the underground hydrogen storage amount is greatly increased.

The invention belongs to the technical field of catalytic materials and hydrocarbon reforming, and particularly relates to a high-entropy catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a metal salt solution containing lanthanum, chromium, copper, zinc, manganese, nickel, iron and cobalt ions with a chelating agent and a dispersing agent for reaction, carrying out ultrasonic cavitation treatment to obtain sol, adjusting the pH value, gelatinizing under an oil bath heating condition to obtain a colloidal precursor, drying, and calcining in an air atmosphere to obtain a perovskite type high-entropy oxide precursor; and then treating in a reducing atmosphere to obtain the FeZnCuNiCo perovskite type high-entropy alloy catalyst which contains metal components of La, Cr, Ni, Mn, Fe, Zn, Cu and Co and takes a multi-metal alloy active center of Fe-Zn-Cu-Ni-Co as a main component. The high-entropy catalyst can meet the harsh requirements of high temperature, strong carbon deposition driving force and long-period operation in a propane dry reforming reaction, and is suitable for industrial application scenarios of continuous production of high-temperature synthesis gas.

The invention discloses a green synthesis ammonia and organic liquid hydrogen storage combined device. The device comprises a water electrolysis hydrogen production device, a nitrogen production device, an organic liquid hydrogen storage device, a low-pressure gas compressor, a synthesis gas compressor and an ammonia synthesis device, the water electrolysis hydrogen production device produces hydrogen and conveys the hydrogen to the organic liquid hydrogen storage device and the synthesis gas compressor; the nitrogen making device is used for making nitrogen and conveying nitrogen to the organic liquid hydrogen storage device and the synthesis gas compressor; the organic liquid hydrogen storage device reacts hydrogen-poor organic liquid with hydrogen generated by the water electrolysis hydrogen production device to generate hydrogen-rich organic liquid, nitrogen is introduced into the hydrogen-rich organic liquid for dehydrogenation reaction, and the hydrogen and the nitrogen are input into the low-pressure gas compressor; the low-pressure gas compressor and the synthesis gas compressor compress hydrogen and nitrogen and input the compressed hydrogen and nitrogen into the ammonia synthesis device; and the ammonia synthesis device generates ammonia under the action of the catalyst. The gas-liquid mass transfer efficiency and the hydrogen desorption rate are improved, the energy consumption and the operation and maintenance cost of the compressor are reduced, and accurate adjustment of the hydrogen-nitrogen ratio is achieved.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a hydrogen storage material, a preparation method thereof and a hydrogen storage system. The hydrogen storage material comprises the following raw material components in percentage by mass: 90%-97.5% of hydrogen storage alloy powder, 1%-5% of a volume expansion buffering agent, 1%-5% of a heat conduction material and 0.5%-3% of an additive, the additive comprises at least one of a silane coupling agent and polyimide; the preparation method comprises the following steps: mixing the raw material components, carrying out cold press molding, carrying out heat treatment for 4-12 hours in an inert atmosphere at the temperature of 110-150 DEG C, and cooling to obtain the hydrogen storage material.

The invention belongs to the technical field of hydrogen energy, and particularly relates to a solid hydrogen storage system with two charging and discharging ends and a working method.The solid hydrogen storage system comprises at least two independent solid hydrogen storage units, and each solid hydrogen storage unit independently communicates with an upstream hydrogen supply pipeline through a first valve set and independently communicates with a downstream hydrogen using pipeline through a second valve set; each solid hydrogen storage unit is selectively communicated with the thermal circulation loop or the cold circulation loop through a third valve group; the first valve group, the second valve group and the third valve group are controlled, so that when the upstream hydrogen supply pipeline has a hydrogen supply demand and the downstream hydrogen use pipeline has a hydrogen use demand, the first solid hydrogen storage unit is configured to be in a hydrogen charging mode, and meanwhile, the second solid hydrogen storage unit is configured to be in a hydrogen discharging mode; the solid hydrogen storage unit in the hydrogen charging mode is communicated with the upstream hydrogen supply pipeline and the cold circulation loop for charging hydrogen, and the solid hydrogen storage unit in the hydrogen discharging mode is communicated with the downstream hydrogen supply pipeline and the hot circulation loop for discharging hydrogen.

The invention discloses a preparation method of a high-capacity magnesium-based composite material based on MOF structure modification, and belongs to the technical field of hydrogen storage materials, the preparation method comprises the following steps: (1) preparing an M-MOF guest material; (2) modifying an aperture structure of the M-MOF guest material; and (3) preparing the MgH2 (at) S-M-MOF compound by a wet impregnation nano confinement method. Compared with a pure MgH2 hydrogen storage material, the MgH2 (at) S-M-MOF compound magnesium-based hydrogen storage material prepared by the nano confinement method has the advantages that the hydrogen absorption and desorption reaction temperature is obviously reduced, and the dynamics is greatly improved; compared with a traditional nano confinement hydrogen storage material preparation process, the preparation method has the advantages that the comprehensive hydrogen storage performance of a compound is enhanced by modifying a pore structure and introducing catalytic elements, the operability is high, the effective loading rate is high, the preparation period is short, and the yield is high; the required raw materials are cheap and easy to obtain, and the preparation process is low in cost, high in safety and suitable for industrial production and popularization.

The invention discloses a NH4H2PO4-CaCO3 modified high-performance AB2 type hydrogen storage alloy and a preparation method thereof. The chemical formula of the AB2 type hydrogen storage alloy is TiaZr (1-a-b) YbMnxCr (1.8-x) Fe (0.2), and the mass ratio of the AB2 type hydrogen storage alloy to NH4H2PO4 to CaCO3 is 98: 1: 1; the preparation method comprises the following steps: 1, selecting a metal elementary substance raw material; 2, performing vacuum arc melting to obtain an alloy ingot; 3, crushing and grinding the alloy cast ingot; and 4, drying the powder with NH4H2PO4 and CaCO3 powder, and then carrying out ball milling and mixing. According to the alloy, by controlling the content of Cr, Mn, Fe and Y elements, the activation performance at the room temperature is improved, the hydrogen absorption rate is increased, the hydrogen storage capacity is increased, NH4H2PO4 and CaCO3 are combined for modification, the spontaneous combustion tendency of hydrogen absorption state powder in air is reduced, and the alloy is suitable for the field of solid hydrogen storage.

The invention relates to the field of reforming catalyst preparation, and discloses a supported reforming catalyst, preparation and application thereof, and a catalytic reforming method. The invention relates to a supported reforming catalyst. The catalyst comprises an alumina carrier containing rare earth metal and IVA group metal, and an active component supported on the alumina carrier, the active component comprises a platinum group metal; wherein in the alumina carrier, pores with the pore diameter of 6-10 nm account for 10-22% of the total pore volume, pores with the pore diameter of 10-20 nm account for 50-75% of the total pore volume, and pores with the pore diameter of 20-50 nm account for 10-25% of the total pore volume. The supported reforming catalyst provided by the invention has excellent catalytic performance, is applied to the field of hydrocarbon catalytic reforming, and has relatively high reaction activity and product selectivity.

The invention relates to a Y-doped Ti-Mn-based solid hydrogen storage alloy and a preparation method thereof, belongs to the technical field of hydrogen storage alloy materials, and has the advantages of easiness in activation, high hydrogen absorption and desorption speed, moderate hydrogen absorption and desorption plateau pressure and long cycle life. The invention provides a Y-doped Ti-Mn-based hydrogen storage alloy, which is characterized in that the chemical general formula of the hydrogen storage alloy is Ti1-x-yYxZryMn2-w-vVwFev, in the formula, x, y, w and v represent atomic ratios, 0.02 < = x < = 0.08, 0.05 < = y < = 0.15, 0.3 < = w < = 0.5, and 0.1 < = v < = 0.2. The hydrogen storage alloy is excellent in hydrogen storage performance and can be completely activated by absorbing hydrogen for the first time under the conditions of 25 DEG C and 3 MPa, the hydrogen storage capacity is larger than or equal to 1.90 wt%, the hydrogen absorption plateau pressure is larger than or equal to 0.35 MPa, the hydrogen desorption plateau pressure is smaller than or equal to 0.26 MPa, and the hydrogen absorption retention rate of the alloy is larger than or equal to 97.52% after the alloy is cycled for 1000 times.

The invention discloses a catalyst for dehydrogenation of a liquid organic hydrogen energy carrier as well as a preparation method and a dehydrogenation method of the catalyst. The catalyst for dehydrogenation of the liquid organic hydrogen energy carrier comprises an active component, an auxiliary agent and a carrier, the active component is Pt, the auxiliary agent is CeO2, and the carrier is MgO-Al2O3 composite oxide; the CeO2 is dispersed on the surface of the MgO-Al2O3 composite oxide in an island form; pt is selectively dispersed on the CeO2 islands. The catalyst can inhibit agglomeration and growth of Pt particles and deposition of organic carbides on the surface of the catalyst in the dehydrogenation reaction process, and shows excellent activity and stability.

The invention relates to the technical field of chemical looping hydrogen production, in particular to an integrated chemical looping hydrogen production device which comprises an oxygen carrier mechanical lifting pipe (1), an oxygen carrier feeding pipe (2), an integrated chemical looping hydrogen production reactor (3) loaded with oxygen particles, an oxygen carrier discharging pipe (14) and an oxygen carrier feeding dipleg (4). A discharge port of the oxygen carrier feed pipe (2) is connected with a feed port of the oxygen carrier feed leg (4), and a discharge port of the oxygen carrier discharge pipe (14) is connected with a feed port of the oxygen carrier mechanical lifting pipe (1); the oxygen carrier mechanical lifting pipe (1), the oxygen carrier feeding pipe (2), the oxygen carrier discharging pipe (14) and the oxygen carrier feeding dipleg (4) are all connecting pipes; the integrated chemical-looping hydrogen production reactor (3) is integrally a vertical barrel with a flat top and a funnel-shaped bottom. The invention further relates to application of the integrated chemical-looping hydrogen production device.

The present application provides a solid-state hydrogen storage material and a preparation method and application thereof. Specifically, the preparation method comprises the following steps: (1) ball-milling a magnesium-based alloy powder, a light metal hydride, a nano-carbon material, a composite catalyst powder and an interface modifier to obtain a mixed powder; and (2) sintering the mixed powder under vacuum at 200-350 DEG C for 2-5 hours to obtain a sintered body, wherein: the magnesium-based alloy powder is a Mg-Mn-Al alloy powder; the light metal hydride is a mixture of LiAlH4 and NaBH4; the nano-carbon material is selected from one or more of graphene and carbon nanotubes; the composite catalyst powder is a mixture of TiO2, Fe3O4, CeO2 and La2O3; and the interface modifier is selected from one or more of a silane coupling agent and a titanate coupling agent. The solid-state hydrogen storage material has high hydrogen storage capacity, fast hydrogen absorption and desorption rate and good cycle stability.

The invention discloses a double-vacancy ZnCdS solid solution photocatalyst and a preparation method and application thereof.The preparation method comprises the steps that a cadmium source, a zinc source and a sulfur source are added into absolute ethyl alcohol to be stirred and dissolved, the mass ratio of the cadmium source to the zinc source to the sulfur source is 1: 9: 3, a reaction is conducted under the water bath condition of 70-90 DEG C, suction filtration, washing and drying are conducted, and a powdery ZnCdS solid solution is obtained; the preparation method comprises the following steps: adding NaOH into water, stirring and dissolving, then adding the powdery ZnCdS solid solution, carrying out ultrasonic treatment, and carrying out suction filtration, washing and drying to obtain the double-vacancy ZnCdS solid solution photocatalyst. The preparation method has the advantages of being high in hydrogen production rate, good in repeatability and stability, simple and convenient to prepare, low in cost and the like, the obtained double-vacancy ZnCdS solid solution photocatalyst can be applied to the field of photocatalytic hydrogen production, and the hydrogen production efficiency reaches up to 12.69 mmol.g <-1 >. H <-1 > and is 23.94 times that of pure ZnS and 11.64 times that of pure CdS.

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves pyrolyzing one or more waste plastics into various pyrolysis products, including a carbon solids-containing pyrolysis residue, and then subjecting the pyrolysis residue to partial oxidation gasification to thereby form a syngas composition.

The present disclosure relates to the technical field of solid-state hydrogen storage materials, and specifically provides a magnesium-based hydrogen storage material based on a core-shell structure, a preparation method therefor, and use thereof. The magnesium-based hydrogen storage material based on a core-shell structure provided by the present disclosure comprises a hydrogenated combustion product of Ni / Fe3O4@MIL and MgH2, wherein Ni / Fe3O4@MIL is a material having a core-shell structure. An inner core of Ni / Fe3O4@MIL comprises Ni-loaded Fe3O4 microspheres, and an outer shell of Ni / Fe3O4@MIL comprises an organic ligand. The magnesium-based hydrogen storage material based on a core-shell structure significantly improves the hydrogen storage performance of magnesium hydride, and can still maintain a high hydrogen absorption capacity at a low temperature.

The invention provides bionic fractal micro-channel reactor equipment for fluid fuel hydrogen production, which is particularly suitable for marine mobile hydrogen production scenes such as a ship power system and an offshore hydrogen refueling station. The microreactor adopts an upper, middle and lower layer functional structure design, and comprises a diversion diffusion area, a chemical reaction area and a product buffer collection area, the diversion diffusion area and the product buffer collection area are fractal tree-shaped microchannels with optimal continuous length ratio and mass diffusion flux, and the diffusion resistance of reactants can be remarkably reduced. By virtue of the characteristics of compact structure, vibration resistance and easiness in integration of the fractal microchannel, uniform distribution and efficient transportation of reactants are realized, heat and mass transfer performance can be enhanced under harsh working conditions of the ocean, and hydrogen production efficiency and system reliability are improved by combining efficient heat source supply and fuel conversion processes; and the requirements of an ocean mobile platform on efficient, compact and stable hydrogen production equipment are met.

Disclosed in the present invention is an integrated reforming power generation test system having wide-range fuel adaptability, comprising a fuel supply subsystem, a catalytic reforming subsystem, a hydrogen purification subsystem, a power generation subsystem, and a test monitoring subsystem. A fuel pump and a fuel delivery pump are connected to a water-gas shift reactor by means of an evaporator and a reformer, the water-gas shift reactor is connected to a pressure swing adsorption device by means of a first gas-liquid separator, the pressure swing adsorption device is connected to a fuel cell stack by means of a hydrogen buffer tank, and a gas chromatograph is connected to the reformer by means of a third gas-liquid separator and to the water-gas shift reactor by means of a second gas-liquid separator. By using a variety of fuel resources to produce electricity, the present invention breaks through the limitation of the scope of traditional single-fuel reforming power generation systems, ensures the reliability of electricity supply, gets rid of the dependence on specific fuels, enhances regional energy safety, and improves the flexibility of energy supply.

The invention discloses an intelligent control method for methanol cracking hydrogen production based on big data. The method comprises the following steps: acquiring hydrogen demand data, methanol raw material parameter data and catalyst parameter data; predicting target hydrogen data in a preset time period based on the hydrogen demand data; inputting the target hydrogen data, the methanol raw material concentration data and the catalyst parameter data into the hydrogen production optimization process model to obtain target control parameters output by the hydrogen production optimization process model; adjusting purification process parameters and hydrogen production process parameters based on the target control parameters; and acquiring real-time hydrogen data based on the adjusted hydrogen production equipment, performing comparative analysis on the real-time hydrogen data and target hydrogen data, judging whether a deviation threshold is exceeded or not, and if the deviation threshold is exceeded, adjusting the purification process parameters and the hydrogen production process parameters in real time. According to the invention, intelligent quantitative control in cracking hydrogen production is realized, and the problems of resource waste and high production cost are avoided as much as possible.

The invention discloses a high-thermal-conductivity core-shell copper-zinc-aluminum catalyst, a preparation method thereof and application of the high-thermal-conductivity core-shell copper-zinc-aluminum catalyst in a methanol reforming hydrogen production reaction. Aiming at the strong heat absorption characteristic of a methanol reforming hydrogen production reaction, a coprecipitation method is utilized to prepare a copper-zinc-aluminum catalyst with a heat conduction agent as a core and copper, zinc oxide and aluminum oxide nanoparticles as a shell, so that a metal salt is subjected to in-situ precipitation reaction on the surface of the heat conduction agent, and micro mixing of the copper, zinc oxide and other nanoparticles and the heat conduction agent is realized; compared with other heat conduction agent adding modes such as particle mixing and tabletting mixing, the catalyst shows a stronger catalytic effect in a strong endothermic reaction such as a methanol steam reforming hydrogen production reaction, and the optimal catalyst conversion rate reaches 51.1% under the conditions that the reaction temperature is 230 DEG C and the WHSV is equal to 24 h <-1 >.

The invention relates to the technical field of preparation of catalysts, in particular to a titanium dioxide modified mesoporous nickel catalyst, a preparation process and application thereof, and the preparation method comprises the following steps: S1, preparing a titanium dioxide modified mesoporous silicon dioxide material; s2, nickel-based acid liquid is added into the titanium dioxide modified mesoporous silicon dioxide material, ultrasonic treatment is performed for 1 h after sufficient mixing, standing is performed for 24 h at the room temperature so as to perform the dipping process, and then the mixture is transferred into a drying oven and dried at the temperature of 110 DEG C; and S3, uniformly grinding the dried solid, putting a sample into a crucible, transferring the sample into a tubular furnace, introducing argon as a protective atmosphere, heating to 550 DEG C at a heating rate of 1 DEG C / min, and roasting for 6 hours to obtain the titanium dioxide modified mesoporous nickel catalyst. The method has relatively high industrial potential, can replace an expensive noble metal catalyst to be used for industrial production, and lays a certain technical foundation for realizing final industrial production of a carbon dioxide methane reforming reaction and integrating the reaction into a green energy storage system.