58results about How to "Synthesis fast" patented technology

The invention discloses a preparation method of a self-humidifying membrane electrode of a proton exchange membrane fuel cell, relates to a preparation method of a membrane electrode, and aims to solve the technical problem of poor performance of the conventional self-humidifying membrane electrode. The method comprises the following steps: 1, synthesizing a COFs material by using 2, 4, 6-triformyl phloroglucinol and 2, 5-diaminobenzene sulfonic acid through a two-phase method; 2, preparing slurry a by using a Pt / C catalyst and a perfluorosulfonic acid ionomer solution; preparing self-humidifying catalyst layer slurry b from a COFs material, a Pt / C catalyst and a perfluorosulfonic acid ionomer solution; and 3, coating the slurry a on the anode surface of the proton exchange membrane, and coating the slurry b on the cathode surface to obtain the self-humidifying membrane electrode. According to the electrode, H2 / O2 is used as fuel, and the power density is 756.3 mW / cm < 2 > under the relative humidity of 20%; h2 / air is used as fuel, the power density is 437.8-879.7 mW / cm < 2 > under the relative humidity of 50%, and the material can be applied to the field of fuel cells.

The invention discloses polyrotaxane with controllable cyclodextrin coverage rate as well as a preparation method and application of the polyrotaxane, and belongs to the technical field of polyrotaxane materials. The preparation method comprises the following steps: dissolving alpha-cyclodextrin, 3-hydroxyadamantane-1-carboxylic acid and polyethylene glycol diamine in deionized water, refrigerating and assembling to form quasi-polyrotaxane, and blocking to obtain polyrotaxane; wherein the polyethylene glycol diamine is prepared from polyethylene glycol and N, N '-carbonyldiimidazole, and the cyclodextrin coverage rate of the polyrotaxane is directionally regulated and controlled by regulating and controlling the mass ratio of the alpha-cyclodextrin to the 3-hydroxyadamantane-1-carboxylic acid, the adding sequence of the 3-hydroxyadamantane-1-carboxylic acid and the refrigerating and assembling time. Based on the mechanism that 3-hydroxyadamantane-1-carboxylic acid and polyethylene glycol compete in a cyclodextrin cavity, polyrotaxane with a cyclodextrin coverage rate of 0.5-2.5% is synthesized, and a polymer based on the polyrotaxane has better ductility and mechanical properties.

The invention discloses a non-noble metal copper-based catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a copper source and a second metal source in a solvent to obtain a precursor prefabricated solution, dropwise adding an alkaline solution to adjust the pH value of the precursor prefabricated solution to 7-13, keeping for 4-12 hours in an oil bath environment of 60-100 DEG C, aging, filtering, washing and drying to obtain a solid precursor; and putting the obtained solid precursor into a muffle furnace, heating to 200-800 DEG C in an air atmosphere, and roasting for 1-9 hours to obtain the non-noble metal copper-based catalyst. Wherein the second metal source is an aluminum source, a magnesium source, a zinc source, a zirconium source or a cobalt source; the catalyst can realize complete conversion (100%) of acetylene and selectivity of more than 95% of ethylene at a low temperature (180 DEG C) and a high space velocity (18000 ml / gcat / h), does not inactivate after more than 150 h under repeated cycle tests, and has important significance for industrial production.

The invention provides a label-free magnetic self-assembly nanoprobe, a construction method thereof and application of the label-free magnetic self-assembly nanoprobe in detection of PrPC protein. The label-free magnetic self-assembly nanoprobe disclosed by the invention comprises a magnetic Fe3O4 / Fe2O3 (at) Au heteroplasmon nanorod array and a sulfhydrylation aptamer nucleic acid chain which is combined with the magnetic Fe3O4 / Fe2O3 (at) Au heteroplasmon nanorod array through an Au-S bond; a biosensor prepared from the label-free magnetic self-assembly nanoprobe is good in reproducibility and stability; the RSD value of multiple times of detection (intraday / day) is 1.55%; the storage time of multiple groups of sensors is 0-15 days, and the change of response signal values does not exceed 4%; the biosensor has a relatively low detection limit (1pg / mL), a relatively wide linear range (1 * 10 < pg / mL >-1 * 10 < 5 > pg / mL) and relatively good sensitivity, has very good application in detection of PrPC, and has very good practicability.

According to the palladium adsorbent with the fluorescence indication function and the preparation method and application of the palladium adsorbent, an aldehyde compound is dispersed in a mixed solution of acid and water, a turbid liquid of a hydrazide compound and water is dropwise added into the obtained aldehyde compound turbid liquid, stirring reaction is conducted at the room temperature, and the palladium adsorbent with the fluorescence indication function is obtained. Different from a conventional two-step method in which an organic polymer needs to be synthesized firstly, the preparation method disclosed by the invention adopts a strategy of pre-activating an aldehyde monomer by using an acid catalyst, so that the nucleophilicity of an amino monomer is prevented from being reduced, the generation of a semi-amine aldehyde intermediate is accelerated, and the reaction efficiency is improved, so that Schiff base condensation can be rapidly synthesized in a water phase at room temperature, and precious metal catalysis is not needed; and batch production can be realized more easily. And the material has an optical indication performance while having an adsorption capacity on palladium, and can be recycled and reused after elution.

The invention belongs to the technical field of metal-organic framework functional materials, and particularly relates to a nickel-based metal-organic framework material, a plasmon nickel-based metal-organic framework composite material and a synthesis method and application of the nickel-based metal-organic framework material and the plasmon nickel-based metal-organic framework composite material. According to the invention, chloroauric acid is directly reduced into gold nanoparticles by using the reducibility of the nickel-based metal organic framework material, and the gold nanoparticles are loaded on the nickel-based metal organic framework material, so that uniform dispersion and firm loading of the gold nanoparticles on the nickel-based metal organic framework material are realized. The method has the advantages of simple synthesis method, convenience in operation and no need of additional reducing agent, is easy for large-scale preparation, and has better market application value and development prospect. The prepared plasmon nickel-based metal organic framework composite material is used as a photoelectrocatalytic reaction catalyst to be applied to photoelectrocatalytic reduction of nitrate to prepare ammonia, and the catalytic performance is excellent.

The invention discloses an enzymatic synthesis method of poly (deoxyribonucleotide). The invention provides a synthetic method of polydeoxyribonucleotide. The synthetic method comprises the following steps: 1) synthesizing a single-stranded DNA molecule at the 3'end of a base primer by using TdT enzyme; the base primer is a single-stranded DNA (deoxyribonucleic acid) molecule which is composed of random basic groups and has the length of 5-100nt; 2) amplifying the single-stranded DNA molecule to obtain an amplification product; and 3) breaking the amplification product to obtain the polydeoxyribonucleotide. When the TdT enzymatic ssDNA is synthesized, the length of the synthesized ssDNA can be controlled by accurately adjusting the reaction time. The generated ssDNA is used as a minimum structural unit, and can be broken into PDRN with a specific length after being subjected to single chain cyclization and rolling circle amplification.

The invention provides a titanium oxide film catalytic material for rapid high-yield synthesis of imine as well as a preparation method and application of the titanium oxide film catalytic material. The titanium oxide film catalytic material has continuous and adjustable interlayer spacing on the premise of retaining a titanium oxide nanosheet structure, and rapid and high-yield synthesis of catalytic imine is realized through a two-dimensional nano confinement channel provided by a titanium oxide nanosheet between film layers and a synergistic catalytic effect of photoexcited active oxygen species; and the synthesis of the imine is completed in a continuous mobile phase reaction mode, and the product flows out along with the mobile phase and is separated from the system, so that the separation and purification process is simplified.

The invention provides a method for rapidly synthesizing lignin carbon dots through electron beam irradiation, and belongs to the technical field of carbon dot synthesis. Comprising the following steps: flattening lignin powder, and irradiating the lignin powder by electron beam irradiation; dissolving the irradiated lignin powder in the step 1) in ultrapure water to form a lignin solution, and uniformly stirring; and (3) centrifuging the lignin solution which is uniformly stirred in the step (2), filtering supernate by using a filter membrane, then transferring filtrate into a dialysis bag for dialysis, finally collecting the solution in the dialysis bag, and freeze-drying to obtain the lignin carbon dots CDs. According to the method, lignin molecular bonding is rapidly broken through high-energy electron beam irradiation, cracking and carbonization of lignin are accelerated, and instant synthesis of CDs at the room temperature is achieved. In the synthesis process, no external temperature and pressure rising condition is needed, and normal-temperature synthesis and rapid synthesis are achieved. The fluorescence characteristic of the CDs synthesized by the method can be realized by changing the irradiation dose. The method is simple and easy to operate and has good universality.

The application discloses a kind of wide temperature range stable copper cluster scintillator and its preparation method and application, the scintillator chemical general formula is Cu4X4 (dppyme) 2, by introducing methyl in pyridine ring 6 position structure space constraint, induce to form long-range ordered crystal packing phase, significantly enhance the lattice rigidity.This material has the microcosmic energy level structure of thermal activation delayed fluorescence (TADF) and self-trapped excitor (STE) light emitting mechanism synergism, in-190 ℃ to 150 ℃ extremely wide temperature range, excellent radiation luminescence stability is shown.The application is prepared by room temperature solution method, and process is simple.The flexible film constructed using the material improves the mechanical stability by polymer embedding process, and the spatial resolution reaches 27.8 lp / mm, which is suitable for X-ray detection and imaging in extreme environments such as deep space exploration, polar scientific research and high-temperature industrial detection.

The invention discloses a dual-channel multi-pulse signal synthesis method, which belongs to the technical field of multi-pulse signal synthesis and comprises the following steps: acquiring a plurality of pulse signals and parameters thereof; the pulse signals are stored in a random type signal pool and a periodic type signal pool according to time domain characteristics in the parameters; synthesizing the pulse signals in the periodic signal pool into a periodic pulse sequence; synthesizing the pulse signals in the random signal pool into a random pulse sequence; synthesizing the periodic pulse sequence and the random pulse sequence into a dual-channel multi-pulse signal; according to the method, hardware resources used by the two channels are small, the two channels process signal sets with different properties, priorities do not need to be set for pulse signals to be synthesized, and when pulse overlapping occurs, the probability that each pulse can be reserved is not affected by the priorities; according to time domain feature classification, pulse synthesis is performed by taking a single pulse as a unit, so that the condition of large-scale pulse loss is avoided.

The invention provides an anti-cracking agent for preventing seedless litchi fruits from cracking before picking, and particularly relates to the technical field of crop cultivation. The anti-cracking agent for preventing the seedless litchi fruits from cracking before picking comprises a component A, a component B and a component C, the component A is one of thidiazuron or forchlorfenuron, the component B adopts a brassinolide compound, the component C is a nitrate nitrogen fertilizer, and the brassinolide compound is 24-epibrassinolide. The anti-cracking composition has the beneficial effects that thidiazuron and forchlorfenuron in the anti-cracking composition are efficient plant cytokinin and can efficiently promote plant tissue cell division, brassinosteroid compounds with low concentration can remarkably promote crop growth, calcium ammonium nitrate promotes pericarp growth and increases pericarp toughness, the thidiazuron, forchlorfenuron and brassinosteroid compounds are used cooperatively, and the anti-cracking effect is good. The seed-free lychee anti-cracking agent can achieve an obvious synergistic effect on prevention of seed-free lychee cracking, can rapidly promote fruit peel cell division of fruits, enables fruit peels to grow faster, improves the toughness of the fruit peels, and is good in anti-cracking effect before picking.

The invention provides a preparation method of a sulfone-containing 1, 3-eneyne derivative, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: adding a palladium catalyst, a ligand, alkali, alkyne and paratoluensulfonyl iodide into an organic solvent, reacting at 40 DEG C for 4-8 hours, and performing post-treatment to obtain the sulfone-containing 1, 3-enyne derivative. The preparation method is easy to operate, and post-treatment is simple and convenient; the method has the advantages of cheap and easily available reaction starting raw materials, wide tolerance range of substrate functional groups, high reaction efficiency, one-step efficient and rapid synthesis of the sulfone-containing 1, 3-eneyne derivative, and strong practicality.

The invention discloses a synthesis method and application of high-relaxation-rate manganese-based nanogel. The synthesis method comprises the following steps: S1, dissolving VCL, AA, VPA, BAC and SDS in water; s2, under the protection of nitrogen, stirring the solution at 70 DEG C to realize homogenization, and initiating a further polymerization reaction by using AAPH to generate nanogel; s3, after the polymerization reaction is finished, purifying the nanogel by adopting an HCL precipitation and NaOH redissolution method so as to remove unreacted monomers; s4, after purification is finished, an HEPES buffer solution with the pH being 7.4 is used for dissolution, a MnCl2 solution is added for a reaction at the temperature of 37 DEG C, and the manganese-based nanogel is obtained. The r1 relaxation rate of the manganese-based nanogel reaches up to 29.8 mM <-1 > S <-1 > under the field intensity of 3.0 T, and the manganese-based nanogel is uniform in size, controllable in particle size, high in long-term stability, free of cytotoxicity, good in biological safety and capable of being applied to magnetic resonance imaging T1WI enhancement of liver, kidney and bone tumors.

The present invention discloses a group of nucleic acid aptamers specifically binding to Mycobacterium tuberculosis and their applications. The ssDNA aptamer of the Mycobacterium tuberculosis standard strain H37Rv of the present invention has strong affinity and high specificity, and the aptamer can detect Mycobacterium tuberculosis with high specificity, which can provide a favorable basis for the preparation of sensors for detecting Mycobacterium tuberculosis and laboratory diagnosis of tuberculosis.

Disclosed is a ZSM-5 / β core-shell molecular sieve, its synthesis and application thereof, the molecular sieve comprising a core composed of at least two crystal grains of ZSM-5 molecular sieve and a shell composed of a plurality of crystal grains of β molecular sieve, the ZSM-5 molecular sieve grains having an average grain size of 0.05-15 µm, the core-shell molecular sieve having a shell coverage of 50-100%, a shell thickness of 10-2000 nm, and an average grain size of the β molecular sieve grains in the shell of 10-500 nm, wherein a ratio of a height of a diffraction peak at 2θ = 22.4° to a height of a diffraction peak at 2θ = 23.1° in an X-ray diffraction pattern of the ZSM-5 / β core-shell molecular sieve is 0.1-10 : 1. The ZSM-5 / β core-shell molecular sieve has good catalytic performance.

This invention provides an indene-based organic compound, its preparation method, and its applications, relating to the technical field of organic synthesis. The preparation method includes the following steps: mixing and reacting a benzyl alcohol-based compound, an alkyne, a catalyst, and an auxiliary agent in a solvent to obtain the indene-based organic compound; the catalyst includes at least one selected from ferric chloride, trifluoromethanesulfonic acid, boron trifluoride diethyl ether, and scandium trifluoromethanesulfonate; the auxiliary agent includes at least one selected from p-toluenesulfonyl isocyanate, chlorosulfonyl isocyanate, dibenzoylmethane, and aminosulfonic acid. The method of this invention not only features mild reaction conditions and high product selectivity, but also a broad substrate range, simple post-processing, and convenient operation, enabling efficient and rapid synthesis of the target product.

The invention discloses an X-ray luminescent material as well as a synthesis method and application thereof, and belongs to the technical field of luminescent materials. The X-ray luminescent material is a crystal material, and the chemical formula of the X-ray luminescent material is Ca (at) LRMnCl4. 2H2O, wherein LR is a crown ether ligand. The X-ray luminescent material adopts a novel, rapid, simple and convenient supramolecular assembly technology, efficient synthesis of the X-ray luminescent material is realized, and the technology obviously shortens the synthesis period, simplifies the operation steps and reduces the synthesis danger by optimizing intermolecular interaction and an assembly path, selecting specific metal manganese and adopting an acid-free green synthesis path.

The invention provides a method for preparing a multi-heterojunction electrocatalyst by recycling a waste lithium ion battery electrode material, the multi-heterojunction electrocatalyst and application of the multi-heterojunction electrocatalyst. The invention provides an electrode material recycled from a waste lithium ion battery electrode. Carrying out ball milling on the recovered electrode material, adding a solvent and a nitrogen-containing polymer, and stirring to prepare a spinning solution; performing high-voltage electrostatic spinning on the obtained spinning solution to obtain a spinning film; and placing the spinning film in a heating container, and carrying out gradient heating treatment in an inert atmosphere to obtain the multi-heterojunction electrocatalyst. The method disclosed by the invention has the characteristics of simplicity in synthesis, convenience in operation, wide application range and the like, the preparation condition is mild, the method is simple and easy, special equipment is not needed, the cost is relatively low, and a road is paved for quickly and efficiently recycling the waste batteries.

The present invention provides a titanium oxide film catalytic material for rapid and high-yield synthesis of imines, and a preparation method and use thereof. The titanium oxide film catalytic material has a continuously adjustable interlayer spacing while retaining the titanium oxide nanosheet structure, and realizes rapid and high-yield catalytic synthesis of imines through the synergistic catalytic effect of the two-dimensional nano-confined channels provided by the titanium oxide nanosheets between the film layers and the active oxygen species excited by light, and the synthesis of the imines is completed in a continuous mobile phase reaction mode, and the product flows out with the mobile phase and leaves the system, simplifying the separation and purification process.

The present disclosure relates to a method for preparing a cytidine vinyl phosphate compound, comprising contacting a compound represented by formula (I) with an ammonia source compound in an organic solvent under aminolysis reaction conditions; in the compound represented by formula (I), R1, R2, R5, R6, R8 and R9 are each independently hydrogen, methyl or ethyl; R3 and R4 are each independently one of hydrogen, halogen, hydroxyl, protected hydroxyl, C1-C3 alkyl, C1-C3 alkoxy, substituted C1-C3 alkyl, substituted C1-C3 alkoxy; each R7 is independently one of hydroxyl, protected hydroxyl, C1-C3 alkyl, C1-C3 alkoxy, substituted C1-C3 alkyl, substituted C1-C3 alkoxy; R 10 The present disclosure also relates to the use of the cytidine vinyl phosphate compound prepared by the method.

The application belongs to the technical field of antioxidant drug development, and discloses a caffeic acid derivative, a preparation method and application thereof. The caffeic acid derivative is a compound shown in formula 2 or a pharmaceutically acceptable salt thereof, and a solvate of the compound shown in formula 2 or the pharmaceutically acceptable salt thereof. The caffeic acid derivative is a novel compound, and the compounds are designed and successfully synthesized for the first time, and the structures thereof are characterized. The preparation method of the caffeic acid derivative is simple, convenient to operate, and capable of rapidly synthesizing the compounds. Research finds that the caffeic acid derivative has good antioxidant activity, and has a good application prospect in the treatment of oxidative stress.

In a first aspect, the invention relates to a battery, typically a rechargeable secondary battery; in a second aspect, the invention relates to an improved electrolyte for such a solid-state battery, i.e. a medium that includes ions in said battery and conducts electricity by the movement of these ions rather than by electrons; in a third aspect, the invention relates to a method of producing such a solid crystalline electrolyte; and in a fourth aspect, the invention relates to a product obtained by said method. The invention provides an improved battery performance.

The present invention provides a continuous synthesis method of a high-entropy oxide with controllable crystal form, components and proportions, and belongs to the technical field of inorganic materials. The present invention adopts a subcritical water mixing process and a rapid annealing process, and the synthesis method is simple and easy to implement, and can realize the rapid synthesis of high-entropy oxides, greatly improving the synthesis efficiency of high-entropy oxides; the present invention can adopt a preparation method of continuous sampling + high-throughput processing, and can quickly realize the uninterrupted continuous production of different high-entropy oxides, which is conducive to industrial batch production; the present invention can be applied to the controllable synthesis of a variety of high-entropy oxides with different crystal forms, different element components, and different element proportions, and has a wide range of applicability, which is conducive to the testing and development of different high-entropy oxides.

The invention discloses nanoscale Ti3O prepared from titanium metal powder, a preparation method of the nanoscale Ti3O and application of the nanoscale Ti3O to preparation of an acidic oxygen evolution electrocatalyst, and belongs to the technical field of metal powder processing. According to the method, the nano titanium metal powder is used as a raw material and is controllably and selectively oxidized into the nano-scale Ti3O under the conditions of proper atmosphere, reaction temperature and reaction time, and the prepared nano-scale Ti3O has good conductivity and high specific surface area. The preparation method has the characteristics of simple process, low equipment and operation requirements, high product purity, high consistency and easiness in batch preparation, and the prepared nanoscale Ti3O can be used as a carrier of various noble metals, so that the acidic oxygen evolution electrocatalyst M (at) Ti3O with the noble metal core-shell structure is prepared, M is Pt, Ir, Rh or Ru, and the preparation method is simple and easy to implement. The prepared electrocatalyst has excellent acidic oxygen evolution reaction activity and stability, and has great application potential in a proton exchange membrane water electrolyser.

The invention discloses double-network conductive hydrogel and a preparation method and application thereof, polyvinyl alcohol, acrylic acid and ferric sulfate are used as main raw materials, and polyvinyl alcohol / polyacrylic acid-iron ion double-network hydrogel, namely PVA / PAA-Fe < 3 + > hydrogel, is prepared through free radical polymerization and a direct soaking method by using redox reaction between tannic acid and Fe < 3 + >. The PVA / PAA-Fe < 3 + > hydrogel prepared by the embodiment of the invention is relatively good in strength, toughness and conductivity, has no obvious difference in conductivity in a tensile deformation mode, and has potential application in the field of stretchable conductors.

The invention discloses a method for synthesizing oligopeptide 1, which belongs to the technical field of polypeptide synthesis, and comprises the following steps: synthesizing H-Gly-His-OH, synthesizing Boc-Gly-His(Boc)-OH, synthesizing Boc-Gly-His(Boc)-Lys(Boc)-OH, synthesizing H-Gly-His-Lys-OH, and obtaining oligopeptide 1. The invention has the beneficial effects that each step of the method is simple and fast to synthesize, and high-quality products can be obtained. Through four-step reaction, dipeptide can be quickly synthesized, two protections are applied in one step, all protections are removed in one step, and the final product can be recrystallized to obtain a qualified product, with a short production cycle and low production cost.

The invention discloses a three-in-one graphite hydrochloric acid synthesis furnace for preparing hydrochloric acid, relates to the technical field of hydrochloric acid preparation, comprises a furnace body, a mixing tube installed at the bottom of the furnace body, a chlorine inlet arranged at the bottom end of the mixing tube and a hydrogen inlet arranged on the outer wall of one side of the mixing tube, and also comprises: a cooling and cleaning integrated mechanism for cooling hydrogen chloride gas generated by combustion and self-cleaning the interior thereof; a synthesis mechanism; and a water injection and cooling integrated mechanism for injecting water combined with hydrogen chloride gas into the synthesis mechanism and for cooling the residual gas that continues to be discharged upward again; the three-in-one graphite hydrochloric acid synthesis furnace for preparing hydrochloric acid can prevent the problem of scale appearing inside a graphite shell to affect the heat exchange effect of the graphite shell on the basis of circulating cooling of the hydrogen chloride gas, solves the problem that scale inside a circulating water pipe used for cooling in the prior art is difficult to clean, and improves the cooling effect of the cooling mechanism after long-term use.

The invention provides a halide electrolyte, a preparation method thereof and an electrochemical device, and particularly relates to the technical field of solid-state batteries. The chemical formula of the halide electrolyte is Li < 2 + n > Zr < 1-n > MnCl < 6-x-y > Br < x > I < y >, wherein n is more than 0 and less than or equal to 0.6; 0 < = x < = 6, 0 < = y < = 6, and x + y < = 6; m is a doping element and is selected from one or more of V, Cr, Mn, Fe, Co and Ni, and the preparation method of the halide electrolyte comprises the following steps: uniformly mixing raw materials according to the stoichiometric ratio of the chemical formula of the halide electrolyte, dispersing the raw materials in a solvent, and carrying out wet grinding treatment to obtain wet grinding slurry; carrying out drying treatment on the wet grinding slurry to obtain a halide precursor; and carrying out microwave sintering on the halide precursor to obtain the halide electrolyte. The preparation method can effectively improve the performance and production efficiency of the electrolyte, and can greatly reduce the synthesis cost of the halide electrolyte.

The application belongs to the technical field of hydrogen storage materials, and specifically discloses a rapid preparation method of magnesium borohydride. First, magnesium hydride and rare earth borate (yttrium borate, lanthanum borate, etc.) are uniformly mixed and then subjected to solid-phase ball milling treatment to obtain a solid-phase ball milling product, namely, magnesium borohydride; then, the solid-phase ball milling product is uniformly mixed in a solvent, and high-purity magnesium borohydride can be obtained after purification. The raw material, rare earth borate, used in the application can be synthesized by a simple hydrothermal method, and the process is simple and low in cost. The yield of nearly 50% can be achieved in only 2 hours, which has the industrial production potential of rapidly synthesizing magnesium borohydride and can ensure the high purity of the prepared magnesium borohydride.