83 results about "Sodium azide" patented technology

The invention provides a preparation method of (S)-oxetane-2-methylamine. The preparation method of (S)-oxetane-2-methylamine comprises the following steps: (1) carrying out ring closing reaction on a compound A under an alkaline condition to obtain a compound B; (2) reacting the compound B with dibenzylamine to obtain a compound C; (3) reacting the compound C with a reducing agent to obtain a compound D; (4) reacting the compound D with paratoluensulfonyl chloride to obtain a compound E; (5) reacting the compound E with alkali to obtain a compound F; and (6) carrying out a reaction on the compound F and palladium on carbon to obtain the (S)-oxetane-2-methylamine. According to the preparation method provided by the invention, ring expansion reaction using trimethylsulfoxide iodide in the prior art is avoided, the problem that residual sulfur elements cause poisoning of a palladium-carbon catalyst is solved, meanwhile, sodium azide is also avoided, and the preparation method is safe and reliable in process, high in chiral purity and yield and suitable for industrial large-scale production.

The invention discloses a chemical-enzymatic coupling synthesis method of oseltamivir phosphate, which comprises the following steps: by taking monasic acid OS-01 as a substrate, sequentially carrying out S1 esterification, S2 ketalation, S3 selective ring opening, S4 TEMPO oxidation, S5 primary transaminase reaction, S6 acetylation, S7 secondary transaminase reaction and S8 phosphorylation reaction to obtain the final product oseltamivir phosphate OS-09. According to the method, the step of sodium azide required by a traditional route is avoided, the production safety and the industrialization possibility are enhanced, two different transaminases are used for respectively constructing different chiral centers, the steps of protecting groups and deprotecting groups on the traditional route are not needed, the overall route is short, the used chemical reagents are few, the yield is high, and the method is suitable for industrial production. The industrial requirements of environmental protection and low cost are met.

Disclosed is a method for preparing oxetan-2-ylmethanamine, which belongs to the field of organic synthesis. [2-(1-ethoxyethoxy)methyl]propylene oxide is used as an initial raw material, and reacted in the presence of potassium tert-butoxide and trimethylsulfoxonium iodide; the resulting product is reacted with a sulfonyl compound and triethylamine; the resulting product is reacted with a compound of phthalimide; the resulting product is reacted with an amino group-containing compound, to obtain oxetan-2-ylmethanamine. The method according to the disclosure allows for an overall yield of not less than 30% in scale-up production (kilogram level), which is higher. Moreover, compared with the traditional method for preparing oxetan-2-ylmethanamine, a palladium-carbon catalytic hydrogenation step is not required, and dangerous chemical-sodium azide is not required in the method according to the disclosure. Thus, the method has high safety, low production cost, simple operations, and thereby is suitable for industrial production.

The present application relates to a kind of preparation method and application of composite modified clay mineral adsorbent for adsorbing dioxin, and the preparation method includes the following steps: (1) clay mineral is crushed and sieved, sintering, obtain the clay mineral powder after sintering;(2) the clay mineral powder after sintering and cerium trichloride are mixed into deionized water, citric acid solution is added, obtain the cerium after clay mineral;(3) the cerium after clay mineral, sodium azide and alkali metal element are weighed and mixed uniformly, after temperature treatment, obtain cerium nitride & clay mineral compound;(4) the cerium nitride & clay mineral compound is dispersed into phosphate buffer solution, hafnium oxychloride solution is added, in situ photodeposition method is reacted, obtain composite modified clay mineral.Compared with traditional clay mineral, the composite modified clay mineral prepared in the present application not only has strong adsorption removal efficiency for dioxin, but also has better reusability.

This invention provides a continuous process for producing ultrafine sodium azide, employing either System A or System B, including a nitrite ester synthesis section, a sodium azide synthesis section, and a gravity separation section. In the nitrite ester synthesis section of System A, the reaction temperature is -5℃ to 55℃, and the pressure is atmospheric pressure; the raw material alcohol includes methanol or ethanol. In the nitrite ester synthesis section of System B, the reaction temperature is -15℃ to 5℃, the pressure is atmospheric pressure, and the separation temperature is -5℃ to 55℃; the raw material alcohol includes methanol, ethanol, propanol, or isopropanol. This invention effectively enhances the mixing and transfer of materials under strong centrifugal force, thereby accelerating the reaction and separation speed. Even the azide reaction can proceed rapidly in the aqueous phase without a phase-transfer catalyst, reducing the reaction time from several hours to minutes. The residence time of materials in the equipment is extremely short, significantly shortening the production cycle.

This invention discloses a method for preparing furanyl diisocyanate and its applications, relating to the field of organic polymer compounds. Under nitrogen atmosphere, furoic acid is added to concentrated sulfuric acid and mixed, followed by the addition of paraformaldehyde and a temperature-controlled reaction to obtain bis(5-formic acid-2-furan)methane. An organic base is added to a solvent containing bis(5-formic acid-2-furan)methane, and diphenyl azide phosphate is added dropwise to react and obtain bis(5-acyl azide-2-furan)methane. The bis(5-acyl azide-2-furan)methane is dissolved in an organic solvent and reacted to obtain furanyl diisocyanate. This invention provides a high-yield, high-selectivity one-step method for obtaining the intermediate bis(5-formic acid-2-furan)methane, shortening the synthetic route, improving synthetic efficiency, avoiding the use of sodium azide, increasing safety, and reducing production costs. The production of bio-based polyurethane is environmentally friendly, economical, and industrially applicable, and can be used to develop environmentally friendly coatings, adhesives, and sealants.

The invention discloses a falling collision protection device, a task equipment module and an aerostat, and relates to the technical field of aerostats, the falling collision protection device comprises a mounting part, an air bag and a control unit, and the mounting part is provided with a containing cavity; the air bag can be contained in the containing cavity, and a gas generating agent is loaded in the air bag; the control unit is used for judging whether falling and collision protection is implemented or not, and when falling and collision protection is implemented, the gas generating agent is excited to generate protective gas, so that the air bag is unfolded under the action of pressure. According to the falling collision protection device, the solid sodium azide is instantaneously decomposed to generate nitrogen, so that the air bag is quickly unfolded before touching the ground, and the buffer failure caused by inflation delay of the compressed air cylinder is eliminated.

The application provides a method for continuously preparing iodine azide and application thereof, and comprises the following steps: sending an azide reagent and a quaternary ammonium salt phase transfer reagent into a continuous flow reactor to obtain a mixture A, then reacting the mixture A with an iodine reagent entering the continuous flow reactor to obtain iodine azide, and continuously discharging the iodine azide from the continuous flow reactor during the reaction to obtain the iodine azide. The application utilizes the continuous flow reactor to quickly and efficiently prepare the explosive iodine azide. Compared with the existing sodium azide / ICl technology, the application greatly solves the explosion risk caused by the storage and transfer of a large amount of sodium azide, and greatly improves the safety.

The application discloses a kind of azole-based metal organic framework and its preparation method and application, preparation method includes: sodium azide, hydrazine hydrate, 4-imidazole formaldehyde, ferrous trifluoromethyl sulfonate are dissolved in methanol solution and are reacted;The reaction product is filtered, washed, dried, and azole-based organic ligand is obtained;Azole-based organic ligand and transition metal salt are reacted in the mixed solution of N, N-dimethylformamide and methanol or ethanol, and the reaction product is centrifuged, filtered, washed, and azole-based metal organic framework is obtained.In the application, azole-based metal organic framework has the characteristics of spontaneous generation of singlet oxygen, without active oxygen under light conditions, and the needle shape of azole-based metal organic framework material can produce physical puncture effect on bacteria, which can effectively cooperate with the singlet oxygen spontaneously generated to resist bacteria.

The application belongs to the technical field of extraction separation, and particularly relates to a 3N-PTD ligand and a preparation method and application thereof. The preparation method provided by the application comprises the following steps: mixing 3-chloropropylamine hydrochloride, sodium azide and deionized water, and performing a reflux reaction to obtain 3-azidopropylamine; dissolving 2,6-diethynylpyridine, 3-azidopropylamine, sodium ascorbate and CuSO4.5H2O, and performing a click reaction to obtain the 3N-PTD ligand. The yield of the 3N-PTD ligand obtained by the preparation method is high.

The application discloses a high-ammonia-nitrogen wastewater simultaneous nitrification and denitrification and chromium remediation method based on a microorganism-promoter combination. 12 The combination is composed of simultaneous nitrification and denitrification bacteria and sodium azide (NaN3), alanine and dodecamolybdenum phosphate (PMo 12 ) and is used for detoxifying dissolved heavy metal chromium and improving denitrification efficiency. The method is to culture SND simultaneous short-cut nitrification and denitrification biological bacteria under aerobic conditions, inoculate the biological bacteria into a high-chromium solution, add biological promoters, promote the growth of microorganisms and the conversion of nitrogen, continuously receive and provide electrons in a reversible oxidation-reduction process, thereby reducing the total activation energy of the reaction and efficiently detoxifying heavy metal chromium. The microorganism-promoter combination technology obtained in this way can not only realize efficient simultaneous nitrification and denitrification in high-ammonia-nitrogen wastewater, but also maintain the biological activity of the SND bacteria in a high-chromium environment, thereby providing reliable technical support for efficient chromium removal and toxicity remediation of high-ammonia-nitrogen wastewater.

The application relates to a preparation method of diamond containing NV color centers and a quantum current sensor, and comprises the following steps: pretreating a diamond substrate; performing high-energy particle irradiation on the pretreated diamond substrate to introduce vacancies in a diamond lattice; placing the irradiated diamond substrate in a solution containing a nitrogen source to perform hydrothermal treatment; the solution containing the nitrogen source is a modified sodium azide solution to which sodium hydroxide is added; and performing annealing treatment on the hydrothermally treated diamond substrate in a protective atmosphere, so that the vacancies are combined with injected nitrogen atoms to form NV color centers, so as to obtain diamond containing NV color centers. The preparation method of diamond containing NV color centers and the quantum current sensor provided by the application have the advantages of high NV color center concentration and good uniformity.

The utility model discloses a protective barrier for road bridge and tunnel engineering, which relates to the technical field of protective barriers and comprises a vertical column, a second upper column is arranged on one side of the vertical column, a second lower column is arranged at the bottom end of one side of the vertical column, and a first upper column is arranged at one end of the second upper column. A first lower column is arranged at one end of the second lower column, and a plurality of mounting cylinders are arranged at the bottom of the second upper column and the bottom of the first upper column respectively. According to the protective barrier for the road, bridge and tunnel engineering, when one side of the mounting cylinder is impacted by an automobile, the impact rod impacts solid sodium azide in the protective cylinder, the solid sodium azide is subjected to decomposition reaction when being impacted violently, so that the solid sodium azide is quickly decomposed to generate a large amount of nitrogen, and the nitrogen is fully absorbed by the impact rod. The nitrogen is inflated into the air bag through the base, so that the air bag continues to expand outwards, the expanded air bag can buffer impact of the automobile and can protect pedestrians on the other side from being hurt, and the effect of protecting the pedestrians and the automobile is achieved.

The invention relates to the field of organic synthesis, in particular to a method for continuously preparing 5-(trifluoromethyl)-1H-tetrazole sodium salt. The method comprises the following steps: mixing trifluoroacetamide and 3-methylpyridine to obtain a mixture I; phosphorus oxychloride and 3-methylpyridine are mixed, and a second mixture is obtained; a continuous feeding mode is adopted, the first mixture and the second mixture are mixed, a steady-state reaction is maintained, and reaction liquid is continuously obtained; performing gas-liquid separation on the reaction liquid to obtain liquid and gas, quenching the liquid, performing gas washing on the gas through 3-methylpyridine, then introducing the gas into a mixed solution of sodium azide and acetone for absorption and filtration to obtain a filter cake, and performing drip washing to obtain the 5-(trifluoromethyl)-1H-tetrazole sodium salt. The purity of the product prepared by the method is greater than or equal to 99.3%, the yield is 84-91%, and the method is easy for industrial production.

The invention provides a lipid index quality control product as well as a preparation method and application thereof. The lipid index quality control product comprises serum, a fat emulsion injection and a preservative; the serum, the fat emulsion injection and the preservative are mixed according to different preset proportions to obtain quality control products with different lipid indexes; the preset proportion is that the volume ratio of the serum to the fat emulsion injection to the preservative is 100: (2-10): (0.05-0.1); the preservative is 0.05% of sodium azide. By applying the provided lipid index quality control product, the accuracy and stability of a detection system on a lipid blood sample can be evaluated, and the reliability of a detection result in the presence of lipid interference is ensured.

The invention discloses a composite plugging material with a core-shell structure, a preparation method and a water-based drilling fluid, and relates to the technical field of oilfield chemistry, and the preparation method of the composite plugging material comprises the following steps: reacting a polyhydroxy aromatic compound with epichlorohydrin to prepare an aromatic compound, the preparation method comprises the following steps: mixing epoxy resin with an aromatic compound prepared by reacting a multi-primary alcohol aromatic compound with triphenylphosphine, bromotrichloromethane, sodium azide and triethyl phosphite in sequence, melting, casting and crushing to obtain epoxy resin particles, and coating a polymer with the epoxy resin particles to obtain the composite plugging material which is used for preparing a water-based drilling fluid. Compared with a common rigid particle material, the core-shell structure plugging material prepared in the invention has the advantages that the pressure resistance is higher, after the core-shell structure plugging material reaches a softening point in a high-temperature and high-pressure stratum, a glass state is converted into a high-elastic state, the core-shell structure plugging material has elastic deformation capacity, the slippage effect among particles can be reduced, a more compact plugging layer is formed, and the pressure bearing capacity is higher.

Disclosed is a thickener dispersion including a thickener including at least one among carboxymethyl cellulose and metal salt of the carboxymethyl cellulose, a change-over-time inhibitor, and an aqueous solvent. The change-over-time inhibitor includes at least one selected from the group consisting of phenoxyethanol, sodium azide, paraben, formaldehyde, 5-chloro-2-methyl-4-isothiazolin-3-one, sodium benzoate, ethylhexylglycerin, and 1,2-hexanediol. The thickener is included in an amount of 0.05 wt % to 3.5 wt % in the thickener dispersion, and the change-over-time inhibitor is included in an amount of 0.05 wt % to 3.0 wt % in the thickener dispersion.

Disclosed is a method for stabilizing a fructosyl peptide oxidase in the presence of methylene blue or a chromogen that produces methylene blue, the method comprising a step for preparing an aqueous solution containing a fructosyl peptide oxidase, methylene blue or a chromogen that produces methylene blue, and at least one compound selected from the group consisting of sodium azide and tryptophan.

This utility model relates to biotechnology and microbiology, specifically to the production of anthrax erythrocyte antigen diagnostic solution for the indirect hemagglutination assay (IHA). The technical result achieved by this utility model is increased specificity, sensitivity, and standardization of the erythrocyte antigen diagnostic solution, and reduced conjugating agent content, all while maintaining a long shelf life. A method for obtaining an anthrax erythrocyte antigen diagnosticum, including obtaining an antigen from the culture filtrate of the vaccine strain Bacillus anthracis 55, treating formalized ram erythrocytes with a conjugating preparation, followed by sensitization of the erythrocytes with anthrax antigen, to 100.0 mg of acetone-dried bacterial mass of the anthrax vaccine strain Bacillus anthracis STI-1 add 10.0 ml of a 70% phenol solution, shake and leave in the cold at 4°C for 3 hours, then the mixture is centrifuged at 6000 rpm for 90 minutes, the supernatant liquid is drained and neutralized by adding a saturated solution of sodium carbonate until a pH of 7.1±0.1 is obtained, and to remove insoluble particles the mixture is centrifuged at 6000 rpm for 30 minutes, the resulting yellowish opalescent supernatant is placed in a laboratory dialysis bag and dialyzed against running water for 2 days and then for 24 hours against distilled water, changing the water 4-5 times; the lipopolysaccharide antigen is extracted from the dialyzed solution by adding 5 volumes of 96° ethyl alcohol and acetone 1:1; the resulting mixture is shaken and left at a temperature of 4°C for 18-20 hours, After the specified period, the mixture is centrifuged at 5000 rpm for 90 min, then the supernatant is drained, and the sediment is washed twice with 3 volumes of 96° ethyl alcohol by centrifugation at 5000 rpm for 30 min, then the sediment is dissolved in distilled water, the resulting liquid lipopolysaccharide antigen in a volume of 3.0 ml is poured into glass vials with a capacity of 20.0 ml, after which the frozen antigen in the vials is transferred to a drying chamber, pre-cooled to a temperature of minus 30°C, hermetically close the lid and turn on the vacuum pump, after creating a vacuum in the chamber, after 2 hours turn on the heating of all the plates, while the temperature of the plates after 1 hour is raised to + 28°C, this heating temperature is maintained until the end of lyophilization, while the temperature in the vial with the antigen after 13 hours is also brought to a temperature of + 28°C, when this temperature is reached, lyophilization is completed after 6 hours, then the sensitized erythrocytes are washed and preserved, the residue of atkisencitin that has not bound to the erythrocyte receptors is removed, they are washed four times for 10 minutes at 3000 rpm with a solution of Tween-80 in a dilution of 1:5000 at the rate of 25-fold volume to the erythrocyte sediment, the sediment of sensitized erythrocytes after washing is diluted with a 0.9% solution of sodium chloride pH (6.8 ± 0.1) and sodium azide to a 10% concentration of erythrocytes.

The invention discloses a C-reactive protein rapid detection method, and belongs to the technical field of C-reactive protein detection.The C-reactive protein rapid detection device comprises a disc provided with a first liquid storage bin, a second liquid storage bin and a reaction bin, and the first liquid storage bin and the second liquid storage bin are communicated with the reaction bin through corresponding microfluidic channels; a mixed solution of polystyrene microspheres, Tween20, sodium azide, a phosphate buffer and a C reactive protein polyclonal antibody is added into the first liquid storage bin; a mixed solution of a phosphate buffer solution with the pH value of 7.4, Tween 20, polyethylene glycol, sodium chloride and sodium azide is added into the second liquid storage bin; adding a to-be-detected sample into the second liquid storage bin; the disc is driven to rotate; the flow (such as starting, stopping and path switching) of the solution in the micro-channel can be accurately controlled by driving the disc to rotate without externally connecting a pump, a valve and other complex mechanical devices and adjusting the rotating speed of the disc, uniform mixing of a sample and a solution reagent is promoted, the mixing efficiency is remarkably improved compared with passive diffusion, and the reaction is sufficient.

The invention discloses a method for synthesizing a benzyl azide compound in a tubular reactor, and belongs to the technical field of azide compounds. According to the technical scheme, the method comprises the following steps: 1) dissolving sodium azide in a solvent I to prepare a sodium azide solution; dissolving benzyl halide in a solvent II to prepare a benzyl halide solution; (2) continuously pumping the sodium azide solution and the benzyl halide solution into a tubular reactor respectively, and reacting under a control condition to generate a reaction solution; according to the method, benzyl halide / substituted benzyl halide and sodium azide are used as raw materials, the characteristics of efficient mass transfer and heat transfer of the tubular reactor are brought into full play, and the reaction efficiency and the product yield are greatly improved.

The invention belongs to the technical field of organic chemistry, and particularly relates to a dehydroabietic acid 1, 2, 3-triazole derivative as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting dehydroabietic acid in a first organic solvent under the action of a reducing agent to obtain a compound 2 with reduced carboxyl; reacting the compound 2 with p-toluenesulfonyl chloride under the action of an alkali solution to obtain a hydroxyl-protected compound 3; in a second organic solvent, reacting the compound 3 with sodium azide under a high-temperature condition to obtain an azide compound 4; and reacting the compound 4 with a copper salt and an alkyne compound in a polar solvent of alkali to obtain a target compound. The dehydroabietic acid derivative with high biological activity is synthesized, raw materials are cheap and easy to obtain, reaction conditions are mild, aftertreatment is simple, the yield is high, a virulent solvent is not used in the synthesis process, the green chemical requirement is met, high pressure or a special catalyst is not needed, and large-scale production can be achieved in conventional equipment.

Methods of synthesis of cobinamide compounds with improved yield and purity. Methods and compositions for treating cyanide, sulfide, sodium azide, or methane-thiol exposure in a subject.

The invention relates to a thermal insulation material and a finished product crystallization reaction kettle applied to intermediate synthesis, and belongs to the technical field of thermal insulation materials. The preparation method comprises the following steps: carrying out ring opening on vinyl ethylene oxide through diluted hydrochloric acid to obtain 4-chloro-1-butene-3-alcohol, reacting with paratoluensulfonyl chloride to obtain a sulfonate derivative, reacting with magnesium chips to generate a Grignard reagent, and reacting with tetraethoxysilane to obtain sulfonate silane; then, sulfonate silane and sodium azide are subjected to an azido reaction to obtain azido silane, and azido silane and triphenylphosphine are subjected to a reaction and purification to obtain an amino co-precursor; mixing and reacting the amino co-precursor with tetraethoxysilane, absolute ethyl alcohol and deionized water, and aging and drying to obtain hydrophobic amino silicon dioxide aerogel; and finally, taking polyether polyol as a base material, adding the hydrophobic amino silicon dioxide aerogel, and reacting with diphenylmethane diisocyanate to obtain the thermal insulation material.

The synthesis method comprises the following steps: by taking bronopol as a raw material and toluene as a solvent, carrying out esterification on micromolecular fatty acid to obtain an intermediate, and then carrying out azidation reaction on the intermediate and sodium azide in an acetone / aqueous solution at 20-50 DEG C to obtain the energetic compound containing nitryl and azido. And after the reaction is finished, extracting, distilling and concentrating to obtain a liquid product 2-bromo-2-nitro-1, 3-diazido propane. According to the route, the intermediate is synthesized through esterification of low-cost and low-pollution micromolecular fatty acid, the subsequent azidation reaction conditions are mild, the method is simple, the reaction time is short, and the method can be popularized and applied to design of synthetic routes of energetic plasticizers of other similar structures and has good application prospects in solid propellants.

The invention discloses a woody grease-based PVC printing film and a preparation method thereof, and relates to the technical field of PVC film materials. When the woody grease-based PVC printing film is prepared, rubber seed oil is esterified with 2-bis (phenyl) phosphoric acid ethanol and then epoxidized to prepare modified rubber seed oil; the preparation method comprises the following steps: sequentially reacting polyvinyl chloride with sodium azide and propynyl cardamonin to prepare modified polyvinyl chloride; the pre-modified calcium carbonate and 4-aminomethyl-2, 2, 6, 6-tetramethylpiperidine are subjected to a reaction, and modified calcium carbonate is prepared; and uniformly mixing the modified polyvinyl chloride, the modified calcium carbonate, the modified rubber seed oil, diisononyl phthalate and a barium-zinc heat stabilizer, and carrying out hot press molding to obtain the woody grease-based PVC printing film. The woody grease-based PVC printing film prepared by the preparation method disclosed by the invention has excellent flame retardance and ageing resistance.

The invention discloses a multi-parameter monitoring transformer based on the Internet of Things, and relates to the technical field of transformers, the two sides of a pulse tube are connected with pulse cylinders through three gas distribution pipes, the outer sides of the pulse cylinders are provided with a plurality of pressure relief holes, the top of a wiring terminal and the bottom of an outer joint are connected with a lifting frame through electric connection rods, and the two sides of the lifting frame are connected with limiting rods. A tightening frame is slidably connected between every two adjacent limiting rods, a tightening spring is connected between the lifting frame and the adjacent tightening frame, embedded rods are connected to the opposite faces of every two adjacent tightening frames, and a connecting box is connected between every two adjacent embedded rods. Rapid power-off of the outer connector and the wiring terminal is achieved, power-off of the transformer body and the outside can be achieved in time in the early stage of a fire, economic losses are reduced, generated nitrogen can dilute the oxygen concentration in the box body, and fire extinguishing is achieved.

The invention discloses a functional cyclodextrin polyether macromonomer as well as a preparation method and application thereof, the functional cyclodextrin polyether macromonomer is prepared by condensing cyclodextrin and alkynyl polyethylene glycol siloxane to prepare alkynyl cyclodextrin, and then the alkynyl cyclodextrin and an azido compound are subjected to click chemistry to obtain the functional cyclodextrin polyether macromonomer. The azido compound is prepared from allyl chloride or methyl allyl chloride and sodium azide, and the polycarboxylic acid admixture is prepared based on the polyether macromonomer. The functional cyclodextrin polyether macromonomer with a novel structure is efficiently prepared on the basis of click chemistry for the first time, the polycarboxylic acid additive is prepared on the basis of the polyether macromonomer, the polycarboxylic acid additive effectively improves the workability of concrete under a current concrete raw material system, and the concrete with a high water-binder ratio or a large volume has a good application prospect. The hydration heat release can be effectively controlled, the hydration heat release temperature peak is inhibited, the internal temperature rise of the concrete is reduced, and the generation of temperature cracks is reduced.

The invention relates to the technical field of sodium-ion batteries, in particular to a novel asphalt sodium-supplementing pore-forming improved hard carbon material as well as a preparation method and application thereof. According to the experiment, nitric acid is used as an oxidizing agent, the raw material asphaltene is oxidized to obtain a hard carbon precursor, sodium azide is used as a sodium-supplementing pore-forming agent, the asphalt is rapidly heated to be subjected to graphitization removal through a micro-plasma synthesis technology, meanwhile, sodium azide is decomposed at high temperature to perform sodium-supplementing pore-forming on asphalt hard carbon, and the effects of reducing graphitization and optimizing pore-forming are achieved; according to the present invention, the sodium supplementing efficiency is improved, the energy consumption is reduced, the negative electrode active material has advantages of high specific surface area and more active sites in the presence of the pore-forming agent, and the assembled battery has advantages of large specific capacity, low first-circle loss rate and the like. The novel asphalt sodium-supplementing pore-forming improved hard carbon material provided by the invention has the advantages of large specific surface area and more active sites, and the assembled sodium ion battery has excellent electrochemical performance.