33results about How to "Enhanced mass transfer" patented technology

The invention discloses a method for selectively separating valuable metals from a positive electrode material of a waste lithium battery, and belongs to the technical field of resource recycling of waste lithium ion batteries. The method comprises the following steps: preparing an aprotic deep eutectic solvent (DES) as a leaching agent and an electrolyte at the same time; the method comprises the following steps: adding a waste positive electrode material into DES, and leaching to obtain a DES leaching-electrolyte system; according to the method, the pulse voltage is applied in stages, selective separation of nickel, cobalt and manganese is achieved by controlling the pulse peak voltage (the first stage is-0.8 V to-1.0 V, the second stage is-1.0 V to-1.2 V, and the third stage is-1.2 V to-1.5 V), and the pulse frequency and the duty ratio are used for regulating and enhancing mass transfer and restraining side reactions. According to the method, the metal deposition potential difference is expanded through DES coordination regulation and control, efficient selective separation of nickel, cobalt and manganese is achieved in combination with pulse step-by-step voltage control, and the method has the advantages of being high in separation efficiency, few in side reaction, simplified in process, high in product purity and the like.

The present application relates to a kind of equipment and method for producing cyclohexanone by oxidizing cyclohexene with adipic acid production exhaust gas, raw gas A containing nitrous oxide in adipic acid production line is entered into raw gas A storage tank, then enter the deoxygenation device of pressure swing adsorption and remove oxygen, enter raw gas B storage tank, enter adipic acid production exhaust gas measuring tank;Through nitrogen tank, cyclohexene measuring tank, adipic acid production exhaust gas measuring tank, high-pressure heat exchanger, high-pressure preheater, fixed bed reactor, high-pressure cooler, high-pressure separator, deep cooling gas discharge tank and low-pressure separator processing generates cyclohexanone.The main purpose product cyclohexanone is generated, the selectivity of cyclohexene to cyclohexanone is greater than 98.0%, the conversion rate of nitrous oxide is greater than or equal to 99.9%, the exhaust gas containing nitrous oxide in adipic acid production line is only treated by removing oxygen, other gases contained do not need to be separated, the gas part of process device high-pressure separator refluxes in certain proportion, more stable.

The present application relates to the technical field of battery preparation, and more particularly to a dry method multi-layer composite electrode film, a preparation method thereof, an electrode sheet and a battery. The dry method multi-layer composite electrode film comprises an electrolyte induction layer, an active material layer, a structure layer and a buffer layer. The electrolyte induction layer is formed by a polar organic high-molecular cross-linked organic film base material, and the electrolyte is better infiltrated into the electrode interior through the attraction of polar molecules to the electrolyte. The structure layer is supported by a high-strength organic film, which improves the structure and tensile strength of the dry method electrode self-supporting film. The buffer layer is formed by an elastic organic high-molecule film, which sets an elastic buffer layer for the multi-layer electrode sheet structure, plays a buffering role when the active material particles swell and shrink, and prevents the destruction of the PTFE fiber filament structure or the electrode sheet structure caused by the volume change of the particles. The present application solves the problems of low mechanical tensile strength, poor electrolyte infiltration and weak volume change resistance in the prior art.

The application discloses a SiC reactor for cyclohexanone aminooxidation and a design method thereof, and relates to the technical field of chemical reactors. The SiC reactor comprises a reactor shell, a plurality of reaction channels, a plurality of composite plates, and a plurality of reaction channels. The axis direction of the reaction channel is parallel to the axis direction of the reactor shell. The plurality of composite plates are arranged in the plurality of reaction channels. The flat plate and the corrugated plate made of silicon carbide are arranged in the axial direction of the reaction channel and matched with the rhombic through-hole structure. The fluid in the reaction channel can be disturbed, the radial diffusion effect of the fluid is improved, and the effective residence time of the fluid is prolonged. Based on the excellent heat conduction performance of silicon carbide and the plate combination structure, the heat exchange between the wall surface and the fluid is strengthened, the temperature field distribution in the channel is optimized, the mass transfer and heat transfer conditions of the material are improved, and the generation effect of cyclohexanone oxime is improved.

The invention discloses a metal composite molecular sieve catalyst and a preparation method and application thereof. The metal composite molecular sieve catalyst provided by the invention comprises the following components in percentage by mass: a) 50-95% of a metal-loaded micron ZSM-5 molecular sieve; b) 5-50% of a nano molecular sieve; wherein the metal is selected from at least one of zinc, gallium, silver, copper, nickel or molybdenum. The catalyst provided by the invention is used in a methanol-to-light aromatic hydrocarbon reaction, and has the advantages of high catalytic activity, high light aromatic hydrocarbon yield, good stability and the like.

The utility model relates to primary amine production technical field, concretely is primary amine rectification purification system. Primary amine rectification purification system, including storage tank, storage tank is connected with rectifying column through heat exchanger, and the bottom of rectifying column is connected with membrane evaporator through pipeline, and the inside of rectifying column is equipped with primary condenser, and rectifying column is connected with gas -liquid separation tank through secondary condenser. The system is through the additional membrane evaporator, and the liquid phase material of rectifying column bottom discharge is handled again. The unique structure design of membrane evaporator makes it can distribute liquid material into film shape evenly, greatly increases evaporation area, strengthens mass transfer process, further separates the primary amine and impurity remaining in liquid phase, significantly improves the purity of product, satisfies the strict requirement of high -end application field to primary amine high purity.

This invention discloses a method for preparing functional carbon materials with atomically dispersed Lewis acid-base sites, comprising: (1) polymer preparation to obtain a polymer sample; (2) polymer modification to obtain a modified polymer sample; (3) polymer carbonization: the modified polymer sample is heat-treated in a non-oxidizing atmosphere to carbonize the modified polymer sample; after carbonization, the system is naturally cooled; then, after washing and drying, the target functional carbon material is obtained. This invention utilizes atomically dispersed Lewis acidic metal sites and basic N sites to modify carbon materials in situ. The prepared functional carbon material has a large specific surface area, well-developed pore structure, abundant acid-base sites, and an atomically distributed structure, which can significantly improve the density of functional sites on the surface of the carbon material and its adsorption efficiency for boron, phosphorus, and metal impurities. Its application in the purification of chlorosilanes can greatly reduce the load of subsequent distillation and impurity removal, and improve the yield and quality of high-purity chlorosilanes.

This invention relates to a flow-type electrolysis device for enhancing carbon dioxide mass transfer and its application, comprising: a clamping assembly including a first clamping plate and a second clamping plate; at least one set of electrode assemblies, each including a cathode plate and an anode plate, the cathode plate being connected to the first clamping plate and the anode plate being connected to the second clamping plate, the cathode plate having a cathode medium outlet and a cathode medium inlet, and the anode plate having an anode medium outlet and an anode medium inlet; and a bipolar plate located between the cathode plate and the anode plate; wherein the diameter of the bipolar plate outlet is smaller than the diameter of the bipolar plate inlet. This invention utilizes the electrolyte flow characteristics to solve the problems of difficult water management and poor stability caused by salt deposition in traditional membrane reactors, ultimately achieving both high current density and stability in the electrocatalytic reduction of carbon dioxide. This enhances the carbon dioxide mass transfer process.

The application discloses a preparation method of a pyrrolidone derivative. Under the action of a non-precious bimetallic multifunctional catalyst, an acetylenic acid derivative shown in formula I is reacted with an amine, a nitro compound or a nitrile compound shown in formula II in a reaction solvent under the heating and stirring of hydrogen gas to prepare a pyrrolidone derivative shown in formula III, and a reaction formula is as follows: the non-precious bimetallic multifunctional catalyst is a nitrogen-doped carbon-based carrier NC derived from a metal-organic framework material ZIF-8 and an effective active ingredient embedded on the carrier NC; the effective active ingredient comprises two metals, one metal is Co, and the other metal is any one of Ni or Cu. The yield of the pyrrolidone derivative synthesized by the method can reach 77% to 100%. The method has the advantages of simple process, high selectivity of the target product, cleanness and environmental protection, small catalyst consumption, low cost, simple catalyst preparation, high catalytic stability and suitability for industrial production.

A method for preparing a hydrodemetallization catalyst, belonging to the field of catalyst preparation technology, includes the following steps: impregnating spherical carbon particles with an iron-containing solution and drying them; mixing the dried carbon particles uniformly with alumina sol and forming droplets; drying and calcining the formed products to obtain an iron-modified alumina support; immersing the iron-modified alumina support in an organic ammonium solution for a first and second hydrothermal treatment; drying and calcining the treated products to obtain a treated alumina support; impregnating the treated alumina support with an active component impregnation solution; drying and calcining the impregnated support to obtain the hydrodemetallization catalyst. The catalyst prepared by this method exhibits high dehydrogenation, Ni removal, and V removal activity, while also possessing high tolerance for metal impurities. This catalyst is particularly suitable for the hydrotreating of heavy oil with high Ni impurity content.

This invention discloses a highly efficient integrated anaerobic ammonia oxidation reactor and treatment method for kitchen wastewater sludge, belonging to the field of wastewater treatment technology. The reactor includes a tank and integrated pretreatment module, denitrification reaction module, solid-liquid separation module, temperature control module, aeration module, and sludge circulation module. The pretreatment module is located at the bottom of the tank and includes a grid filter unit and a bio-adsorption unit; the denitrification reaction module is located above the pretreatment module and is filled with granular anaerobic ammonia oxidation composite bacteria; the solid-liquid separation module is located above the denitrification reaction module and includes a three-phase separator and an inclined plate sedimentation unit. This invention, through its integrated design, achieves pretreatment, denitrification reaction, solid-liquid separation, and precise control within a single tank, solving the problems of low integration, easy loss of bacteria, and high operating costs in existing technologies. It has advantages such as small footprint, high efficiency, stable operation, and no need for external carbon sources, making it particularly suitable for kitchen wastewater sludge treatment.

The application relates to a method and system for purifying durene, and belongs to the technical field of durene purification. The method comprises the following steps: performing primary suspension crystallization on durene-rich liquid at a set cooling speed to obtain primary suspension crystallization slurry with a first temperature; performing solid-liquid separation on the primary suspension crystallization slurry to obtain primary suspension crystallization mother liquor and primary suspension crystallization crystals; performing secondary suspension crystallization on the primary suspension crystallization mother liquor at a set cooling speed to obtain secondary suspension crystallization slurry with a second temperature; performing solid-liquid separation on the secondary suspension crystallization slurry to obtain secondary suspension crystallization crystals; and performing layer-type melt crystallization on the mixed crystals of the primary suspension crystallization crystals and the secondary suspension crystallization crystals to obtain durene crystallization products. Under the synergistic action of the two-stage suspension crystallization and the layer-type melt crystallization, the application can realize high yield and high purity of durene, and the method does not have a gasification and condensation process, and has low energy consumption.

This invention relates to a polymeric ionic liquid catalyst, its preparation method, and its application. The structure of the polymeric ionic liquid catalyst is shown in Formula I or Formula II, wherein p and m are each independent natural numbers, and 4 ≤ p + m; R is a hydrogen donor group; X ‑ The ions are fluoride, chloride, bromide, or iodide; R1 includes any one of C1-C6 alkyl or C2-C6 alkenyl groups; n = 1-6. This invention uses imidazole ionic liquids copolymerized with crosslinking agents of different chain lengths and functionalities to form polymeric ionic liquids, which can solve the problem of catalyst separation and recovery while retaining the advantages of ionic liquid monomers.

This invention belongs to the field of micro / nano structure material design and battery energy storage technology, and relates to a method for preparing a three-dimensional graphene-COF interlocking material: First, by controlling the amination and reduction of graphene oxide, amine functional groups are precisely constructed on its surface, serving as active sites for heterogeneous assembly; then, in solution blending, the enhanced multiple intermolecular forces between the amine groups and the COF precursor drive the COF units to undergo oriented adsorption and two-dimensional ordered pre-assembly on the graphene surface, forming a molecular-level anchor array; subsequently, through a solvothermal reaction, interfacial covalent condensation and π-plane-induced epitaxial growth are synergistically achieved, causing the COF layer to crystallize and form a strongly coupled heterojunction with the deeply reduced and structurally repaired graphene at the molecular level; finally, after freeze-drying and shaping, a dual continuous conductive network carrier with a stable heterointerface, three-dimensional interlocking channels, and an intrinsic built-in electric field is obtained.

The invention discloses a dehydration device for preparing terbium fluoride, and belongs to the technical field of fluorination dehydration. Comprising a barrel body, a stirring assembly is arranged in the barrel body, the stirring assembly comprises a plurality of spiral ring plates which are linearly and uniformly distributed and movably installed on the barrel body, the outer edges of the spiral ring plates make contact with the inner wall of the barrel body, and auxiliary shafts are fixedly connected to the middles of the spiral ring plates; a screening plate is fixedly connected between the head end and the outer end of the spiral ring plate, and a plurality of screening holes are evenly formed in the surface of the screening plate. Through the multiple spiral ring plates connected in series through the auxiliary shafts and the screening plates with the screening holes arranged between the plates, stirring of materials is achieved in the rotating process, raw materials can be evenly heated, meanwhile, the materials are continuously dispersed and thrown in the moving process by means of the rotation of the screening plates and the effect of the screening holes, the contact area of the materials and gas is remarkably increased, and the gas-liquid separation efficiency is improved. The dehydration efficiency is improved.

This invention discloses a method for the continuous hydrogenation synthesis of GalNAc molecules. The invention provides a method for synthesizing a compound as shown in Formula I, comprising the following steps: in a flowing hydrogenation reactor, in the presence of a catalyst, reactant A undergoes a hydrogenation reaction with hydrogen to generate a compound as shown in Formula I; wherein reactant A includes a solvent, a compound as shown in Formula II, and an acid. The synthesis method provided by this invention significantly reduces the formation of Ac-depleted impurities, improves the purity and yield of the product, and also extends catalyst lifetime, thereby partially reducing time costs, catalyst costs, and greatly reducing safety risks during the production process.

This utility model discloses a side-blowing spray gun for a smelting furnace, comprising a gas injection pipe and an oxygen-enriched spray pipe nested inside the gas injection pipe. A nozzle is installed at the inlet of the oxygen-enriched spray pipe, located inside the gas injection pipe at a distance of 15-30 mm from the inlet. A gas collecting chamber is provided at the end of the gas injection pipe, and a gas connector is connected to the gas collecting chamber. A connecting seat is provided at the end of the gas collecting chamber, and this connecting seat is bolted to a sealing flange located at the end of the oxygen-enriched spray pipe. This utility model solves the problems of short service life, natural gas leakage, and poor safety performance of existing spray guns, and has the advantages of simple structure, low cost, strong stirring power of the molten pool, good smelting effect, low energy consumption, and long service life.

This invention discloses a method for detecting bromofenac in ginger, belonging to the field of pesticide residue detection technology. The method includes: homogenizing and extracting ginger samples using an acetonitrile solution containing a hydrophobic deep eutectic solvent; adding a salting-out agent to obtain a supernatant through separation; purifying the supernatant using a boric acid-functionalized magnetic carbon nanotube metal-organic framework composite material as an adsorbent via a temperature-switching adsorption process, first removing phenolic interference through thermal adsorption, then removing lipids through freeze precipitation; and finally detecting the supernatant using liquid chromatography-tandem mass spectrometry. This invention effectively solves the problem of severe matrix interference from phenols and lipids in ginger, and features high recovery rate, low matrix effect, high sensitivity, and simple operation.

The utility model provides a rectifying column, rectifying column includes casing, heat exchanger, reflux separation cavity, gas phase export and liquid phase export, reflux separation cavity with heat exchanger sets up in the inside of casing, reflux separation cavity is located heat exchanger below, and reflux separation cavity's top with heat exchanger's bottom is linked together, reflux separation cavity with the casing has the gap to form first fluid channel, reflux separation cavity's bottom is provided with second fluid channel, and second fluid channel is liquid phase channel, gas phase export sets up in reflux separation cavity's upper position, liquid phase export sets up in the bottom of casing, the utility model tower top heat exchanger and reflux separation cavity are built -in in tower top, and are integrated with tower, and the structure is compact, has reduced gas pressure drop loss, and is favorable to the heat transfer and mass transfer of strengthening tower, improves the separation efficiency of tower.

This invention discloses a method for preparing phenolic chemicals by hydrogenolysis of lignin catalyzed by a cobalt-based nitrogen-carbon composite material. Using organosoluble lignin as raw material, a cobalt-based nitrogen-carbon composite material as catalyst, and a mixed solvent of small organic molecule alcohol and formic acid, the reaction is carried out under an inert gas atmosphere of 0.5–3 MPa, maintaining a reaction temperature of 210–250 °C, and a reaction time of 2–6 h. This method catalyzes the depolymerization of lignin to obtain a series of p-hydroxyphenyl products, achieving high-value utilization of lignin. The lignin conversion rate of this invention is as high as 89.6%, the total yield of monophenolic products can reach 17.7%, of which the yield of p-hydroxyphenyl products reaches 9.0%, with a selectivity of 50.8%. The catalyst preparation process used in this invention is simple and can catalyze the hydrogenolysis of lignin by short-chain alcohols and carboxylic acid solvents under mild conditions to obtain high-value-added chemicals such as p-hydroxyphenyl products.

This invention relates to the field of wastewater treatment technology, specifically a method for treating high-salt organic wastewater containing polyenes and polyamines. This invention overcomes the problems of high toxicity of polyenes and polyamines, easy complexation with catalysts, and low biochemical efficiency under high-salt conditions in wastewater treatment. First, this invention utilizes copper-supported cross-linked chitosan to achieve specific complexation and sedimentation of macromolecules, significantly reducing toxicity. Then, it uses oxygen-rich vacancy titanium dioxide particle electrodes combined with ultrasound to efficiently break stubborn C-N bonds. Next, bimetallic catalytic ozone completely eliminates residual biotoxicity. Finally, iron-modified biochar provides a salt-resistant microenvironment and electron shuttle effect for salt-tolerant bacteria, achieving deep mineralization and denitrification of pollutants. This effectively solves the biochemical treatment problem under the dual stress of high salt and high toxicity, resulting in stable effluent quality.

This invention relates to a continuous flow synthesis method for hydroquinone, a chemical and pharmaceutical intermediate, belonging to the field of chemical intermediate synthesis. The method for preparing hydroquinone uses phenol as a starting material, which undergoes oxidation to obtain p-benzoquinone, followed by hydrogenation reduction to obtain hydroquinone. Both steps are performed in a microreactor system. The synthesis method includes the following steps: (1) Phenol, catalyst 1, and organic solvent are prepared as component A, and an oxidant is used as component B. A and B react in a microchannel reactor 1 to obtain intermediate I benzoquinone; (2) Intermediate I benzoquinone is mixed with an organic solvent and reacted with hydrogen in a microchannel reactor 2 under the action of catalyst 2 to obtain hydroquinone. This invention utilizes a microreactor system with excellent heat and mass transfer performance, significantly shortening the reaction time. Both steps are completed within 50 minutes, and the reaction efficiency is high, energy consumption is low, safety is high, automation is high, and the environment is environmentally friendly.

The application relates to the technical field of lithium ion batteries, and discloses a magnetic-thermal coupling assisted lithium iron phosphate battery and a preparation method thereof. The preparation method comprises the following steps: preparing a lithium iron phosphate composite positive electrode material with a magnetic-thermal effect, wherein the composite positive electrode material is a lithium iron phosphate material coated with ferroferric oxide; preparing a positive electrode sheet by taking the lithium iron phosphate composite positive electrode material as a positive electrode active material; and assembling a lithium ion battery by taking the positive electrode sheet, a metal lithium negative electrode, a diaphragm and an electrolyte. In the application, nano ferroferric oxide material is loaded on the surface of a lithium iron phosphate positive electrode material, and an external magnetic field is introduced during the use of the battery, so that the ferroferric oxide material generates a magnetic-thermal effect under the action of the magnetic field, thereby forming a local thermal field in the battery. The strategy effectively improves the reaction environment of the battery under a low-temperature condition without changing the original structure of the lithium iron phosphate positive electrode material.

This utility model relates to the field of acetone cyanohydrin amidation technology, specifically to a mixing reactor for acetone cyanohydrin amidation. The mixing reactor has a horizontal structure, with a mixture inlet, a reactant outlet, and at least one acetone cyanohydrin inlet on the shell. An inner tube connecting the mixture inlet is provided inside the shell, and at least one nozzle is provided on the inner tube. The acetone cyanohydrin inlet is an inner-extended structure and corresponds to the nozzle. The inner tube consists of a vertical section and a horizontal section, with the vertical section located at the end or midpoint of the horizontal section. This mixing reactor maximizes the uniform mixing of materials, improving the utilization rate of the reactor and the raw materials.

This invention relates to a drawer-type hydrated salt adsorption reactor and a method for storing and releasing heat, belonging to the field of thermochemical heat storage technology. The reactor includes a shell layer and an insulation layer disposed outside the shell layer; the outer wall of the shell layer has an air inlet and an air outlet, which are arranged opposite to each other; one wall of the shell layer is configured as a sliding door, and sealing strips are provided at the periphery of the sliding door; the inner wall of the shell layer has several pull-out support brackets, the axis of which is parallel to the fixed edge of the sliding door. The reactor of this invention can directly utilize natural light to start the heat storage reaction, eliminating the need for separate heat collection equipment and heat transfer fluids, simplifying the heat storage system and improving the utilization rate of solar energy.

The application provides a method for electrochemical water softening, which adopts an electrochemical device with a cathode and an anode to treat wastewater, the wastewater is fed into the cathode and discharged from the anode, and the cathode is a corrugated electrode. The corrugated electrode is a sawtooth corrugated electrode with a sawtooth surface or a wave corrugated electrode with a wave surface. In the electrochemical water softening method, the hydrogen bubble generation and release of the cathode are utilized to have a certain mechanical peeling effect on the scale layer, and due to the special structure of the electrode surface, the hydrogen bubble has a certain pushing force outward, so that the scale layer can be taken away from the surface of the substrate, thereby preventing the scale layer from depositing on the cathode, which not only prolongs the service life of the cathode but also enables the cathode to have a certain self-cleaning ability. The corrugated electrode adopted in the application can make the scale not deposit on the surface of the cathode but crystallize and grow in water, relieve the scale deposition speed on the surface of the electrode, and reduce the energy consumption in the reaction process.

The application discloses a mesoporous hollow zeolite molecular sieve loaded copper catalyst and a preparation method and application thereof, and belongs to the technical field of catalytic material preparation. The mesoporous hollow zeolite molecular sieve loaded copper catalyst takes copper as an active metal, and takes an alkali-treated Silicalite-1 zeolite molecular sieve as a carrier; the mass fraction of the copper in the mesoporous hollow zeolite molecular sieve loaded copper catalyst is 1-20%. The application further discloses a preparation method of the mesoporous hollow zeolite molecular sieve loaded copper catalyst and application thereof in catalyzing furaldehyde to prepare furfuryl alcohol. The application can solve the problems of a complex preparation process, poor catalytic activity and selectivity of the existing copper-based catalyst, and has a relatively high industrialization degree.

A nitrogen-adsorption gel material, its preparation, and its application are disclosed. The nitrogen-adsorption gel material comprises a porous network structure cross-linked with polyvinyl alcohol and phytic acid, and the porous network structure is loaded with zeolite particles. The preparation method involves adding zeolite to a copolymer solution of polyvinyl alcohol and phytic acid under alkaline conditions, and then adding a cross-linking agent to the resulting polyvinyl alcohol-phytic acid-zeolite mixture for cross-linking and curing. The cross-linked and cured mixture is subjected to liquid-solid separation, and the solids after liquid-solid separation are washed until the pH is neutral. The nitrogen-adsorption gel material is used to reduce the ammonia nitrogen content in water bodies through adsorption, or added to a bioreactor to couple a biological reaction for deep denitrification. The material of this invention has good sphericity and excellent ammonia nitrogen adsorption performance.

The application discloses a coil pipe type fermentation device and a continuous solid-state fermentation system, relates to the technical field of solid-state fermentation, and can realize disassembly, offline high-temperature and high-pressure sterilization, and complete sealing of the whole device, so that bacterial contamination is completely avoided from sterilization and fermentation environment of the device, pure culture of strains is realized, and the quality and yield of fermentation products are improved. Meanwhile, the sterilization mode is flexible, supports two modes of assembly after offline sterilization and online sterilization after assembly, is suitable for different use scenes, can effectively avoid bacterial contamination, and realizes pure culture of strains. The coil pipe and the flexible stirring assembly are matched, the device volume is greatly reduced, the space utilization is improved, and the whole link of test, pilot test and production is adapted. Through multi-stage coil pipe series connection design and independent temperature control and parameter regulation of each coil pipe, fermentation conditions can be accurately controlled according to different fermentation stages. Finally, continuous, automatic and accurate operation of solid-state fermentation is realized, and fermentation production efficiency and product stability are improved.

The present application relates to a kind of catalysts for sodium borohydride hydrolysis hydrogen production, especially a kind of CoB / NF sodium borohydride hydrolysis catalyst, preparation method and application.The preparation method includes the following steps: using cobalt chloride hexahydrate and sodium borohydride to prepare CoB powder catalyst;The CoB powder catalyst is mixed with binder PVDF, and NMP is added to form slurry;The slurry is coated on foam nickel support substrate, then by annealing treatment to remove NMP solvent, obtain CoB / NF composite material.The preparation method is simple, easy to scale production, the prepared catalyst has excellent stability, high catalytic activity, preparation cost is lower, in the field of sodium borohydride rapid hydrolysis hydrogen production has good application prospect.