126 results about "Butylamine" patented technology

The invention discloses clethodim diamine salt as well as a preparation method and application thereof. The stability of the clethodim diamine salt (clethodim 1, 4-butanediamine salt, clethodim 1, 5-pentanediamine salt and clethodim 1, 6-hexamethylenediamine salt) provided by the invention is superior to that of clethodim and clethodim monoamine salt (such as clethodim tert-butylamine salt); meanwhile, the herbicidal activity of the clethodim diamine salt (clethodim ethylenediamine salt, clethodim 1, 4-butanediamine salt and clethodim 1, 5-pentanediamine salt) is superior to that of clethodim tert-butylamine salt, and the herbicidal activity of the clethodim 1, 5-pentanediamine salt is superior to that of clethodim. Most clethodim diamine salt is low in degradation rate in the high-temperature heat storage process and easier to store for a long time, the clethodim diamine salt is higher in melting point than clethodim monoamine salt (such as clethodim tert-butylamine salt), granulation and smashing are more convenient, the clethodim diamine salt can be used as a herbicide to be processed into solid dosage forms such as water dispersible granules and the like, the physical performance of the preparation is better, and the preparation has good application prospects. The commercialization prospect is good.

The invention relates to the technical field of lithium ion battery material recovery, in particular to a green stripping recovery method of a waste lithium iron phosphate battery positive electrode material. The method comprises the following steps: discharging and disassembling the waste lithium iron phosphate battery to obtain a positive pole piece; a hydrogen bond acceptor, a hydrogen bond donor and water are mixed, heated and stirred, the eutectic solvent is obtained, the hydrogen bond acceptor is inorganic salt capable of generating sulfate radical, nitrate radical, phosphate radical, carbonate radical or ammonium radical, and the hydrogen bond donor is one or more of urea, thiourea, tetraethylenepentamine, n-butylamine, N-ethylethylenediamine, 1-propanethiol and diallyl sulfide; and soaking and stripping the positive pole piece in the eutectic solvent to obtain the stripped and recycled positive pole material. According to the method, stripping and recycling of the positive electrode material are achieved, and the stripped and recycled positive electrode material is complete in structure, high in purity and good in electrochemical performance.

The invention belongs to the field of cultural relic protection, and relates to a cultural relic surface accessible acidity determination method, which comprises: 1) placing a cultural relic sample using palm leaves as a carrier in a chemical adsorption device, and pre-treating in an inert gas atmosphere; (2) after pretreatment is completed, mixed gas formed by n-butylamine and inert gas is introduced into a chemical adsorption device, and specific chemical adsorption is carried out through the n-butylamine and accessible acid sites on the surface of the cultural relic sample; (3) after adsorption is completed, heating the inner cavity of the chemical adsorption device at a constant rate, desorbing n-butylamine, and recording a desorption signal at the same time; and 4) calculating the acid site concentration according to the desorption signal peak area obtained in the step 3), and determining the acid intensity according to the peak position distribution.The invention provides the cultural relic surface accessible acidity determination method with good specificity and high sensitivity.

The invention belongs to the technical field of tert-butylamine preparation, and particularly relates to a preparation process for synthesizing tert-butylamine by adopting methyl tert-butyl ether. The preparation process comprises the following steps: preparing calcium alginate microspheres; preparing an SAPO precursor solution; performing composite crystallization; preparing an SAPO-11 carrier; preparing an ammonium type SAPO-11 carrier; preparing a metal supported catalyst; preparing an activated catalyst; methyl tert-butyl ether and liquid ammonia are used as raw materials, and tert-butylamine is prepared under the catalysis of an activated catalyst. According to the preparation process for synthesizing the tert-butylamine by adopting the methyl tert-butyl ether, the process of catalytically synthesizing the tert-butylamine by taking the methyl tert-butyl ether and the ammonia as raw materials follows an acid catalytic cracking nucleophilic addition coupling mechanism, and the prepared hierarchical pore CuZn / HSAPO11 catalyst remarkably reduces the reaction activation energy through the synergistic effect of B acid, L acid and metal active sites; high-activity and high-selectivity catalytic conversion at low temperature is realized, and high-purity tert-butylamine is prepared.

The application discloses a device and method for preparing tert-butylamine by directly ammoniating isobutene, which comprises sequentially connected raw material preparation unit, reaction separation unit, rectification separation unit and circulating recovery unit; the raw material preparation unit is used for storing, mixing and heating raw materials; the reaction separation unit is used for pressurizing reaction of the raw materials in the raw material preparation unit and gas-liquid separation of products; the rectification separation unit is used for rectification separation of liquid-phase products separated by the reaction separation unit and recovery of part of unreacted raw materials; and the circulating recovery unit is used for rectification recovery of part of raw materials of gas-phase products separated by the reaction separation unit. The application has the characteristics of low overall equipment investment, high energy utilization rate, simple product separation and purification, perfect overall device design and small environmental pollution.

The application belongs to the technical field of pharmaceutical chemistry synthesis, and specifically discloses a preparation method of oseltamivir and a phosphate thereof and an intermediate thereof, which comprises the following steps: (1) a compound of formula VII is reacted with VIII under the action of a base in a solvent to obtain an intermediate of formula VI, and then the intermediate of formula VI is reacted under the action of a strong base at high temperature to obtain formula V; (2) formula V is subjected to ring-opening reaction with tert-butylamine in a solvent under the catalysis of a Lewis acid to obtain formula IV; (3) formula IV is reacted with an acetylating agent in a solvent under the action of a base to obtain formula III; (4) formula III is reacted under the action of an acid at a certain temperature to obtain formula II; and (5) formula II is subjected to salt formation with phosphoric acid in a solvent to obtain oseltamivir. The preparation method has the characteristics of simple operation, low cost, high yield, high optical purity of the product, stable process and the like, and is suitable for industrial production.

The application is a kind of continuous preparation method and application of core-shell type reduced Cu-based catalyst. The method uses membrane dispersion micro-reactor technology, adopts liquid phase chemical reduction method with potassium borohydride-hydrazine hydrate as double reducing agent, continuously prepares reduced Cu-based nanoscale catalyst, does not need high temperature calcination and hydrogen reduction, can be directly used as active catalyst for catalytic reaction, and realizes green and efficient preparation. The catalyst prepared by the application is used in the reaction of preparing N-butyl-2,2,6,6-tetramethyl-4-piperidinamine from 2,2,6,6-tetramethyl-4-piperidinone and n-butylamine through reductive amination, and excellent catalytic activity and stability are shown.

The invention discloses a Priesteria gigantea GD0038 and an application thereof in improving the flavor of weed crab sauce. The strain is deposited in the China Center for Type Culture Collection with a deposit number of CCTCC NO: M 20242548 and a deposit date of November 13, 2024. The strain is applied to the preparation of weed crab sauce, can significantly improve the flavor of the weed crab sauce, increase the content of volatile substances in the fermented weed crab sauce, and increase the content of characteristic flavor substances such as 1-penten-3-ol, 1-nonanol, isovaleraldehyde, n-hexanol, n-octanol, 3-n-decanol, 2-heptanone, and other alcohols, pyrazines, and ketones, while reducing the content of unpleasant flavor substances such as butylamine, trimethylamine, and n-hexanal. The invention has very good application prospects.

A zeolite having a ferrierite framework structure produced using one or more of n-propylamine, n-butylamine, isobutylamine, and n-pentylamine as a structure directing agent.

The present invention provides a method for preparing terbutaline, which relates to the technical field of chemical synthesis. The method for preparing terbutaline comprises the following steps: (a) Compound 1 reacts with haloepoxyethane through Suzuki reaction to obtain Compound 2; (b) Compound 2 reacts with tert-butylamine to obtain terbutaline. The present invention creatively applies the Suzuki reaction to the preparation of terbutaline, greatly shortening the reaction steps, avoiding the use of bromination reaction, the processes of protecting and deprotecting the protecting group on the hydroxyl group, and also eliminating the need for catalytic hydrogenation. The reaction conditions are mild, the reaction process is easy to control, and the safety factor is high. The raw materials are simple and easily available, saving the industrialization cost. The product has a high yield and high purity, providing a process route for industrial production of products with higher quality.

The utility model provides a production device for synthesizing TBTD in one step, which comprises a reaction kettle, a di-n-butylamine adding pipeline, a hydrogen peroxide adding pipeline, a carbon disulfide adding pipeline, a soft water adding pipeline, a carbon disulfide gas discharging pipeline and a nitrogen pipeline are arranged at the top end of the reaction kettle, and the carbon disulfide gas discharging pipeline is connected with a gas inlet of a condenser. A condensate outlet pipeline of the condenser is connected with a carbon disulfide receiving tank, a bottom outlet pipeline of the carbon disulfide receiving tank is connected with a carbon disulfide adding pipeline, and the carbon disulfide adding pipeline is further connected with a carbon disulfide transfer pump; hydrogen peroxide is adopted as an oxidizing agent, so that high-salinity wastewater discharge is reduced; the reaction liquid is washed with water for many times to remove residual alkali liquor and byproducts, water is used as a solvent to replace a traditional methanol / ethanol system, and emission of VOCs is reduced; the metering pump is used for dropwise adding materials, so that automatic sealing feeding is realized, and harm to bodies of workers is reduced; carbon disulfide is recycled for next reaction, so that the material loss is reduced, and the pollution problem in the subsequent treatment process is reduced.

The present invention relates to the technical field of biodegradable materials, and specifically discloses a biodegradable material for adding BBM bamboo powder and its application in beer bottles. The raw materials of the above-mentioned biodegradable material for adding BBM bamboo powder include by mass: 10-20 parts of polybutylene succinate, 10-30 parts of polybutylene adipate terephthalate, 10-20 parts of bamboo powder, 1-3 parts of dopamine hydrochloride, 0.1-0.5 parts of n-butylamine, 1-2 parts of hexadecyltrimethylammonium bromide, 1-5 parts of tetraethyl orthosilicate, 1-2 parts of tetrabutyl titanate, 1-2 parts of 3-aminopropyltriethoxysilane, 1-2 parts of antioxidant, and 1-2 parts of plasticizer. The BBM obtained by the present invention has excellent mechanical properties, while improving the anti-ultraviolet strength of degradable materials to a certain extent, and has good biodegradability.

The invention provides an engineering bacterium for producing spermidine and a preparation method of the engineering bacterium, and relates to the field of genetic engineering. According to the invention, arginine decarboxylase, aspartate kinase, aspartate-semialdehyde dehydrogenase, spermidine efflux protein (MdtI / MdtJ), carboxylaminopropyl agmatine dehydrogenase (CAPADH), carboxylaminopropyl agmatine decarboxylase (CAPADC) and aminopropyl agmatine urea hydrolase (APAUH) are subjected to overexpression in escherichia coli by using a gene engineering technology, and then the escherichia coli is subjected to enzyme deactivation, so that the escherichia coli is obtained. The genetically engineered bacterium capable of producing the spermidine can be obtained by simultaneously knocking out a spermidine transport system (PotBCAD), a spermidine-N-acetyltransferase (spermidine-N-acetyltransferase) and a homoserine dehydrogenase (homoserine dehydrogenase), so that the genetically engineered bacterium capable of producing the spermidine can be obtained. The engineering bacterium greatly reduces the production cost of spermidine, has a wide application prospect, and lays a foundation for green production of spermidine.

The application discloses a preparation method of bacteriostatic and deodorant plastic and relates to the technical field of plastics. The self-prepared antibacterial agent is prepared by using triethoxysilane butyraldehyde, 4-chloro-1-butylamine and (R)-2-(dimethylamino) propionamide, the Schiff base structure and the quaternary ammonium structure in the molecular chain of the self-prepared antibacterial agent interact, bacterial growth is effectively inhibited, and then the antibacterial and deodorant properties of the plastic are improved; then porous calcium silicate and porous calcium carbonate are used as deodorant fillers of the plastic, the self-prepared antibacterial agent is used as a crosslinking agent, the fillers and the urea-formaldehyde resin are combined with each other, the uniform dispersion of the fillers is facilitated, meanwhile, a crosslinked network structure is formed in the plastic, and the mechanical properties of the plastic are greatly improved.

The invention discloses an antibacterial polyester fiber and a preparation method thereof, and relates to the technical field of high polymer materials. When the antibacterial polyester fiber is prepared, 1, 3, 5, 7-tetramethylcyclotetrasiloxane, solid super acid and 1, 3-bis (hydroxypropyl) tetramethyldisiloxane react to prepare hydroxyl-terminated methyl hydrogen-containing silicone oil, and then the hydroxyl-terminated methyl hydrogen-containing silicone oil reacts with dimethyl terephthalate and ethylene glycol to prepare polysiloxane copolyester; the preparation method comprises the following steps: carrying out phosphorus-hydrogen addition modification on polysiloxane copolyester and diphenyl (4-vinyl phenyl) phosphine, and then carrying out quaternary phosphonium modification on the modified polysiloxane copolyester and 4-bromine-butylamine hydrobromide to prepare antibacterial modified copolyester; preparing ZIF-8 powder and loading an anti-aging agent; and finally, mixing the antibacterial modified copolyester and the ZIF-8 loaded with the anti-aging agent, melting and spinning to prepare the antibacterial polyester fiber. The antibacterial polyester fiber prepared by the method has excellent antibacterial, flame-retardant and antioxidant properties and the like.

The invention discloses a chloride ion-doped micron-sized transverse-size porous CuO nanosheet and a preparation method thereof, and belongs to the technical field of micron / nano material preparation and electro-catalysis CO2 reduction. According to the preparation method, copper acetate is taken as a copper source, potassium chloride is taken as a chlorine source, organic alkali n-butylamine is taken as an alkali source, and a homogeneous precipitation-heat treatment method is adopted, so that the chlorine ion doped micron-sized transverse-size porous CuO nanosheet is prepared; the method is simple in process, low in cost, good in repeatability and easy to amplify production, when the product is used for electrocatalytic CO2 reduction, CO2 is efficiently catalyzed to be converted into high-added-value industrial raw material ethylene, and the product has wide application prospects in the fields of energy conversion and carbon dioxide resource utilization.

To provide a bee repellent in order to prevent damage to honeybees, which are not the intended target of pesticides applied to crops or pesticides used to control carnivorous bees such as hornets and paper wasps. [Solution] A bee repellent comprising one or more components selected from tetradecane, furfuryl alcohol, cinnamyl alcohol, cinnamaldehyde, 3-methyl-2-butenal, methyl cinnamate, geranyl formate, allyl cyclohexanepropionate, isoquinoline, borneol, carvacrol, δ-dodecalactone, β-ionone, quinoline, butylamine, and citronella oil as active ingredients.

The invention discloses a method for measuring the content of isocyanate groups in a polyurethane prepolymer. The method comprises the following steps: measuring dry xylene for later use; weighing a proper amount of polyurethane prepolymer, dissolving the polyurethane prepolymer in xylene, adding a di-n-butylamine-xylene solution, uniformly mixing, and standing; adding isopropanol and standard hydrochloric acid into the mixed solution for mutual dissolution; adding a bromocresol blue indicator and fully oscillating; titrating with a hydrochloric acid standard solution until the terminal color turns yellow from blue, and meanwhile, carrying out a blank experiment; finally, the content of isocyanate groups in the polyurethane prepolymer is obtained through a calculation formula. The mass ratio of the polyurethane prepolymer to the xylene is (0.1-1): (8-12), the mass ratio of the polyurethane prepolymer to the di-n-butylamine-xylene solution is (0.1-1): (9-12), and the mass ratio of the polyurethane prepolymer to the isopropanol is (0.1-1): (18-22). The method is easy and convenient to operate, accurate in measurement, high in reliability and suitable for quality control in the production and application process of the polyurethane prepolymer.

The invention provides a method for synthesizing celecoxib by a one-pot aqueous phase method. The preparation method comprises the following steps: firstly, directly reacting p-methylacetophenone and ethyl trifluoroacetate in one pot under the action of N, N-dimethyl butylamine to obtain a beta-diketone intermediate; in the other pot, p-chlorobenzenesulfonamide and hydrazine hydrate are used as raw materials, a p-hydrazinobenzenesulfonamide solution is generated under the action of N, N-dimethyl butylamine, and the operation is carried out in the two pots at the same time; and finally, adding the p-hydrazinobenzenesulfonamide solution into the beta-diketone intermediate material liquid, combining in two pots, adjusting the acid, heating for reaction, and cooling for crystallization to obtain celecoxib. According to the method disclosed by the invention, the p-hydrazinobenzenesulfonamide aqueous solution is creatively used for participating in the synthesis reaction of the celecoxib, and solid p-hydrazinobenzenesulfonamide hydrochloride does not need to be independently used for participating in the reaction, so that the use of a large amount of acid and the generation of high-temperature acid waste liquid during the production of the p-hydrazinobenzenesulfonamide hydrochloride are avoided. The method does not need any post-treatment operation and high-temperature salt forming link, and is more suitable for industrial production.

The invention relates to the technical field of semiconductor material preparation, in particular to a preparation method of a niobium-containing metal organic compound. The method comprises the following steps: S1, adding an n-butyllithium solution into a reactor, cooling, then adding tert-butylamine, heating to room temperature, and stirring for reaction to obtain a first intermediate solution; s2, cooling the first intermediate solution, then adding niobium pentachloride, heating to room temperature, and stirring for reaction to obtain a second intermediate solution; s3, cooling the second intermediate solution, introducing HNR1R2, and stirring for reaction to obtain a product mixed solution; and S4, sequentially carrying out solid-liquid separation and reduced pressure distillation on the product mixed solution to obtain the niobium-containing metal organic compound. The method is simple in step and short in reaction time, meanwhile, non-toxic alkane n-hexane is used, harm to the human body and the environment is reduced, n-hexane can be repeatedly used, no waste is generated, and the method is suitable for industrial large-scale production.

The invention relates to a production method for improving photo-thermal stability of a chloromethyl ethyl ether industrial product, and belongs to the technical field of chloromethyl ethyl ether processing.The preparation of an intermediate 1 comprises the steps that 80-120 mL of ethyl alcohol, 20-25 g of 3, 5-di-tert-butyl-4-hydroxybenzaldehyde and 6-10 g of n-butylamine are added into a 250 mL four-opening bottle provided with a backflow water diversion device, the temperature is increased to 60 DEG C, a reaction is carried out for 1 h, and an intermediate 2 is obtained; cooling to 0 DEG C by adopting an ice salt bath, adding 1-3g of potassium borohydride in batches, keeping the temperature at 0 DEG C, continuing to react for 0.5 hour, and adding a 5% citric acid aqueous solution to adjust the pH value to 2.0-3.0; the special photo-thermal stabilizer is synthesized and compounded with the epoxidized soybean oil, a single stabilizer and a special formula free of chloromethyl ether are generally adopted in the traditional method, the photo-thermal stabilizer containing the hindered phenol and piperazine structure is synthesized by the method, synergistic protection of light shielding, thermal stability and acid capture is achieved after compounding, and the product performance is remarkably improved; and the purity retention rate is 95-97% after 168h of ultraviolet aging.

The invention discloses a method for continuously preparing tert-butyl isocyanate, and relates to the technical field of tert-butyl isocyanate, and the method comprises the following steps: mixing an inert solvent and p-toluene sulfonamide, introducing phosgene, and introducing inert gas to expel gas after the reaction to obtain a first reaction solution; dropwise adding tert-butylamine into the first reaction solution, and heating and refluxing for more than 4 hours to obtain a second reaction solution; performing separation and purification on the second reaction liquid through separation and purification equipment to obtain tert-butyl isocyanate; the separation and purification equipment comprises a water bath kettle, wherein liquid outlet pipes are respectively arranged at the upper ends of two side walls; the liquid inlet box is arranged in the water bath kettle, a plurality of liquid spraying pipes and a liquid inlet pipe are arranged on the liquid inlet box, and the liquid inlet pipe penetrates through the kettle wall of the water bath kettle; the first evaporation assembly or the second evaporation assembly is arranged in the water bath kettle; the device has the advantages of being convenient to use, improving the purification efficiency and effect and the like.

The invention belongs to the technical field of organic synthesis, and discloses a preparation process of electronic-grade bis (tert-butylamino) silane. The preparation process comprises the following steps: filling a composite catalyst and tert-butylamine into a high-pressure reaction kettle, sealing, replacing with an argon atmosphere, introducing monosilane, stirring and reacting in the argon atmosphere, cooling, filtering, and fractionating filtrate to obtain a crude product; and then carrying out supercritical carbon dioxide extraction on the crude product by using anhydrous isopropanol, carrying out rotary evaporation to remove isopropanol, dissolving in anhydrous acetonitrile, electrolyzing, carrying out secondary filtration, and carrying out fractionation treatment on the filtrate to obtain the electronic-grade bis (tert-butylamino) silane. By adding the composite catalyst and introducing the treatment processes such as supercritical carbon dioxide extraction, the product purity and the reaction yield of the bis (tert-butylamino) silane preparation process are effectively improved, and the content of chlorides and metal impurities of the product is reduced at the same time. Therefore, the method has a wider application prospect.

The invention discloses a catalyst for treating organic wastewater and a preparation method thereof, and belongs to the technical field of catalysts. The catalyst provided by the invention comprises a nano-core and a carbon shell wrapping the nano-core, the nano core is metal nanoparticles with a heterostructure, and the metal nanoparticles are formed by combining transition metal and oxides thereof; the carbon shell is a nitrogen and oxygen co-doped carbon shell. The catalyst prepared by the method provided by the invention has a large specific surface area, a rich pore structure and a rapid electron transfer capability. The prepared catalyst has an excellent effect on degradation of organic dye wastewater, N-methylmorpholine oxide wastewater, chemical nickel plating wastewater and tert-butylamine ethoxyethanol (TBEE) wastewater as an electro-Fenton cathode catalyst.

The application discloses a kind of lead sulfide quantum dots with adjustable light absorption range, preparation method and application thereof.Sulfur source is dissolved in short-chain amine solvent, lead source and organic small molecule ligand solution dissolved in organic polar solvent are added, and then sulfur source solution is added, and the reaction is stirred at a temperature of 0-100 DEG C to obtain a reaction product;anti-solvent is added, and the product is washed and dried to obtain lead sulfide quantum dots with uniform particle size and adjustable light absorption range.By adjusting the content of precursor, reaction solvent and temperature, and under the action of n-butylamine, PbS quantum dots with adjustable light absorption range are directly synthesized in one step, which solves the limitations of small light absorption range and low yield of quantum dot ink direct synthesis, and obtains quantum dots with a light absorption range of 1000nm-2000nm wavelength.The synthesized quantum dots have achieved preliminary application in photoelectric detector.

The present invention relates to the technical field of lithium-ion battery material recycling, and in particular to a green stripping and recycling method for waste lithium iron phosphate battery positive electrode materials. The method comprises the steps of: discharging and disassembling the waste lithium iron phosphate battery to obtain a positive electrode sheet; mixing a hydrogen bond acceptor, a hydrogen bond donor, and water with heating and stirring to obtain a low eutectic solvent, wherein the hydrogen bond acceptor is an inorganic salt capable of generating sulfate, nitrate, phosphate, carbonate, or ammonium, and the hydrogen bond donor is one or more of urea, thiourea, tetraethylenepentamine, mono-n-butylamine, N-ethylethylenediamine, 1-propanethiol, and diallyl sulfide; placing the positive electrode sheet in the low eutectic solvent for immersion stripping to obtain a stripped and recycled positive electrode material. The method of the present invention realizes the stripping and recycling of the positive electrode material, and the stripped and recycled positive electrode material has a complete structure, high purity, and exhibits excellent electrochemical properties.

The application discloses a drying device for preparing buthionine, belongs to the technical field of buthionine preparation, and comprises an operating mechanism, a mixing mechanism for preparing raw materials is arranged on the operating mechanism, and a drying mechanism for drying solvents is arranged on the operating mechanism. When the lower pressing frame is pressed down, 2.6-diisopropyl-4-phenoxyphenyl isothiocyanate and toluene are mixed and then dropped into t-butylamine, and finally the three are mixed by standing, meanwhile, the intermediate product dried in the last preparation process is drawn into a crystallization box for crystallization; when the lower pressing frame is lifted up, the prepared raw materials enter a drying bottle for drying, and the buthionine prepared in the last preparation process is taken out, so that the application has high automation degree and good continuity; when the drying mechanism dries the drying bottle through a heater, the drying bottle rotates at the same time, so that the heating area is increased and uniform drying is realized.

The invention provides a synthesis method of 1-tert-butyl-3-ethyl carbodiimide, which comprises the following steps of: synthesizing 1-tert-butyl-3-ethyl carbodiimide; the method is mild in reaction condition, simple in step and environment-friendly, and high-yield and high-purity synthesis of a target product can be realized. The synthesis method comprises the following steps: (1) carrying out an addition reaction on ethyl isothiocyanate and tert-butylamine in an organic solvent I at 30-60 DEG C to obtain ethyl tert-butyl thiourea; the organic solvent I is selected from one or more of petroleum ether, normal hexane and normal heptane; (2) carrying out oxidative desulfurization reaction on the ethyl tert-butyl thiourea and a sodium hypochlorite aqueous solution with the concentration of 10-15wt% in an organic solvent II at the temperature of 0-10 DEG C; removing sulfur generated in the reaction, and then purifying the feed liquid to obtain 1-tert-butyl-3-ethylcarbodiimide; and the organic solvent II is selected from halogenated hydrocarbon.

The invention discloses an amino acid amphiphilic molecule induced chiral Pt spiral nanowire as well as a preparation method and application thereof, and belongs to the technical field of nanowire preparation. The method comprises the following steps: dispersing a noble metal salt and a reducing agent in a part of oleylamine, and carrying out ultrasonic treatment to obtain a uniform oleylamine suspension; heating the oleylamine suspension to 120-240 DEG C, dropwise adding a phase catalyst mixed solution which is ultrasonically and uniformly dispersed in the other part of oleylamine, and reacting to obtain a chiral Pt spiral nanowire; wherein the noble metal salt is platinum acetylacetonate, the reducing agent is a single chiral amino acid amphiphilic molecule, and the phase catalyst is a borane-tert-butylamine complex. The invention innovatively provides the synthesis steps and the preparation method of the amino acid amphiphilic molecule induced chiral Pt spiral nanowire, the synthesis reaction steps of the method are few, the preparation method is simple and convenient, the prepared spiral nanowire has a regular spiral structure, elements of the spiral nanowire are uniformly dispersed, and the spiral nanowire has good asymmetric catalytic activity.