36 results about "Bromate" patented technology

The invention relates to a method for extracting bromine from a bromine-containing water sample through electrooxidation, in particular to a method for extracting bromine from brine containing various impurity ions, especially high-concentration Cl <-> ions and low-concentration Br <-> ions, which is mainly used for reducing the interference of the Cl <-> ions and improving the recovery rate of the Br <-> ions by selecting a proper oxidation potential. The process is used for optimally selecting the oxidation potential of bromine ions so as to achieve high-recovery-rate bromine extraction, and comprises the following steps: 1) adjusting the pH value of a bromine-containing water sample to be acidic; 2) carrying out electrochemical oxidation on the bromine-containing water sample subjected to acid adjustment to convert bromine ions into bromine gas; and 3) blowing the generated bromine gas to the absorption device through the aeration device. The hydrogen bromide solution is introduced to adjust the pH of the absorption product solution to be acidic, so that bromate is converted into bromide, and finally, a high-quality sodium bromide product can be obtained.

The invention discloses a PTA wastewater ozone-biochemical coupling deep treatment method for inhibiting bromine oxidation. The method comprises pretreatment, pre-ozone oxidation-biological membrane coupling treatment, secondary coagulating sedimentation, post-ozone-BAC filter coupling treatment and an online monitoring control system. According to the process, ozone oxidation is limited in a direct oxidation stage by controlling the ozone dosage and optimizing the reflux ratio, so that oxidation of bromide ions is reduced to the greatest extent while the biodegradability of the wastewater is improved. The front ozonation unit and the rear ozonation unit both adopt high reflux ratio design, so that the direct contact concentration of ozone and raw water is reduced. The online monitoring control system adjusts the ozone adding amount and the reflux ratio in real time, so that the treatment effect is ensured, and meanwhile, generation of bromate is inhibited. The process can effectively remove refractory organic matters and ammonia nitrogen in the PTA wastewater, meanwhile, the bromate content is controlled at a lower level, and the process has a good treatment effect, economical efficiency and environmental friendliness.

The invention discloses a method for degrading benzene series in wastewater and inhibiting generation of bromate by electrically activating persulfate. The method is suitable for treatment of bromine-containing water. According to the method, a persulfate electrochemical activation technology is adopted, the current density and the persulfate concentration are controlled, sulfate free radicals (SO4 <.->) and hydroxyl free radicals (HO <.->) generated by an electro-activated persulfate system can effectively degrade benzene series, and meanwhile, effective inhibition on generation of bromate is realized by utilizing a cathode reduction effect; meanwhile, organic pollutants in the water body are efficiently removed. The technology does not need additional reducing agents, is green and environment-friendly, and is suitable for drinking water and industrial wastewater treatment.

The invention provides a one-pot preparation method of ethyl 4-bromobutyrate, which is characterized by comprising the following steps: step 1, adding gamma-butyrolactone into an organic solvent, and carrying out reflux water separation while dropwise adding a hydrobromic acid aqueous solution, step 2, detecting the content of gamma-butyrolactone, if the content is less than 0.5% by mass fraction, carrying out step 3, and if the content is more than 0.5% by mass fraction, carrying out step 4; 3, dropwise adding absolute ethyl alcohol, continuing to carry out reflux water separation until the water content is less than 0.2% by mass fraction to obtain a crude product solution of the ethyl 4-bromobutyrate, and carrying out distillation and rectification to obtain a purified ethyl 4-bromobutyrate solution, and 4, detecting the water in the system, and if the water content is less than 0.5% by mass fraction, carrying out the step 3, and if the water content is less than 0.5% by mass fraction, carrying out the step 4. If not, continuously supplementing and dripping the hydrobromic acid aqueous solution, continuously carrying out reflux water diversion, and repeating the step 2; when the water content is 0.5% or above by mass fraction, continuing to carry out reflux water separation, and repeating the step 2.

Method for producing ferronickel and removing chromium from nickel laterite ore. This disclosure discloses a method for producing ferronickel and removing chromium from nickel laterite ore, comprising the following steps: (1) washing and separating the nickel laterite ore to obtain an ore slurry and mineral aggregate, adding an alkaline liquid and a bromate, and introducing oxygen into the ore slurry to enable oxidation leaching, and then carrying out solid-liquid separation to obtain a chromium-containing solid and filtrate; (2) washing and separating the solid obtained in step (1) to obtain a solid phase and wash water, and mixing the solid phase with quicklime and a reducing agent to obtain a mixture; and (3) roasting and smelting the mixture obtained in step (2) successively to obtain a finished ferronickel product.The method can achieve chromium enrichment and produce ferronickel by smelting nickel laterite ore while removing chromium impurities, which can protect the safety of a furnace.

This invention provides a temperature-resistant shape memory polymer plugging agent, its preparation method, and its application, belonging to the field of oil and gas drilling technology. The preparation method of this plugging agent includes the following steps: mixing acetic acid and perchloric acid to obtain a mixed acid, then adding bromate, potassium permanganate, and natural flake graphite, and stirring to obtain low-temperature expanded graphite; mixing cyanate ester, linear aliphatic epoxy resin, and an active diluent, then adding low-temperature expanded graphite, organotin compounds, and amine catalysts, and carrying out a curing reaction to obtain a temperature-resistant shape memory polymer material; testing the glass transition temperature (Tg) of the synthesized temperature-resistant shape memory polymer material, compressing it at (Tg+5)~(Tg+10)℃, and then cooling, pulverizing, and granulating to obtain the final product. The plugging agent of this invention can rapidly recover its original shape at high temperatures, accumulate and seal leakage channels, and form a high-strength sealing layer in fractures, meeting the requirements of safe and efficient drilling.

The present application relates to a trace neodymium doped phenethylamine lead bromide monocrystal capable of simultaneously enhancing light yield and shortening decay time and application thereof, which solves the technical problem that the prior art is difficult to simultaneously improve light yield and shorten luminescence decay time. The trace neodymium doped phenethylamine lead bromide monocrystal capable of simultaneously enhancing light yield and shortening decay time is prepared by the following steps: 1) weighing; phenethylamine hydrobromide, lead bromide and neodymium bromide are weighed and placed in a glass bottle; the molar ratio of the phenethylamine hydrobromide, lead bromide and neodymium bromide is 2:1:(0.02-0.05); 2) obtaining a precursor solution; N,N-dimethylformamide is added to the glass bottle, heated and stirred until completely dissolved to obtain a precursor solution; 3) obtaining a crystal; the precursor solution is filtered and placed in a glass beaker for crystallization to obtain a neodymium doped phenethylamine lead bromide monocrystal; through adjustment of the crystal band structure by neodymium, the radiation recombination rate is improved.

Methods and systems for the controlled production of aqueous halogen solutions with varying compositions are disclosed. According to an embodiment, aqueous solutions of hypochlorite ions are modified through the sequential addition of pH adjusting chemicals, non-chloride halide ions, and halogen stabilizing compounds. Sensors, for measuring physical and chemical properties of the solutions as they change due to the impact of the various chemical reactions, are linked to a control system which, in turn, can control the input of one or more chemicals. The control system facilitates the production of a solution with desired characteristics in terms of pH, specific halogen composition, degree of halogen stabilization, and limiting the production of undesired by products such as bromate ions.

An improved method for removing contaminants, such as 1,4 dioxane, from ground water using an advance oxidation process. The improved method uses a controlled injection of monochloramine into the effluent in an amount that suppresses formation of bromates but does not interfere with the oxidative destruction of 1,4 Dioxane destruction. Removing iron from the effluent with a sand filter further improves the removal of bromates from the treated water.

The invention particularly relates to a trace neodymium-doped phenylethylamine lead-bromine single crystal capable of simultaneously enhancing the light yield and shortening the decay time and application thereof, and solves the technical problem that in the prior art, the light yield is difficult to increase and the luminescence decay time is difficult to shorten at the same time. The trace neodymium-doped phenylethylamine lead-bromine single crystal capable of simultaneously enhancing the light yield and shortening the decay time is prepared by the following steps: 1) weighing; the preparation method comprises the following steps: weighing phenylethylamine hydrobromide, lead bromide and neodymium bromide, and putting into a glass bottle; the molar ratio of the phenylethylamine hydrobromide to the lead bromide to the neodymium bromide is 2: 1: (0.02-0.05); 2) obtaining a precursor solution; adding N, N-dimethylformamide into the glass bottle, heating and stirring until the N, N-dimethylformamide is completely dissolved to obtain a precursor solution; 3) obtaining a crystal; the precursor solution is filtered and then put into a glass beaker to be crystallized, and the neodymium-doped phenylethylamine lead-bromine single crystal is obtained; the radiation recombination rate is improved by adjusting the crystal energy band structure through neodymium.

The invention provides a diaphragm, a preparation method and a lithium secondary battery, the diaphragm comprises a diaphragm base material and a coating covering at least one surface of the diaphragm base material, and the coating contains a bromine-containing compound; the diaphragm base material comprises a positive electrode side facing a battery positive electrode, the coating comprises a first coating covering the positive electrode side, and a bromine-containing compound in the first coating comprises bromide; the diaphragm base material comprises a negative electrode side facing a battery negative electrode, the coating comprises a second coating covering the negative electrode side, and a bromine-containing compound in the second coating comprises at least one of bromate and hyperbromate. The coating containing the bromine-containing compound is arranged on the surface of the diaphragm base material and reacts with the lithium dendrites to convert the lithium dendrites into active lithium ions, so that the lithium dendrites are prevented from puncturing the diaphragm to cause internal short circuit of the battery, the safety performance of the battery is improved, and the service life of the battery is prolonged. And meanwhile, irreversible attenuation of battery capacity caused by loss of active lithium ions is reduced, the capacity retention ratio of the lithium secondary battery is improved, the performance stability is improved, and the service life is prolonged.

The invention discloses a pyridylamino bifunctional polyion liquid catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: taking brominated 1-(3-propylamine hydrobromide)-3-vinyl imidazole ionic liquid [PAVIm] Br. HBr and brominated 1-pyridyl-2-vinyl imidazole ionic liquid [PDVIM] Br as comonomers, adding a cross-linking agent and an initiator, and copolymerizing to synthesize a polyionic liquid catalyst I; the pyridylamino bifunctional polyion liquid catalyst provided by the invention has a developed porous structure and abundant ionic groups (carbonate ions and bicarbonate ions), shows relatively high CO2 adsorption performance, can catalyze one-pot synthesis of chain carbonate from CO2, an epoxy compound and methanol under the condition of no solvent and cocatalyst, and has the advantages of simple preparation process and low cost. And efficient utilization of CO2 is realized.

The application discloses a visible light catalyst and a preparation method thereof. Firstly, ZnFe2O4 nanoparticles are prepared by a liquid phase mixing-evaporating solvent-calcining method; then the ZnFe2O4 nanoparticles are uniformly dispersed in an aqueous solution containing different mass of glucose, the glucose is converted into hydrothermal carbon (HC) through a hydrothermal reaction, and the HC is combined with the ZnFe2O4 nanoparticles to obtain a series of HC / ZnFe2O4 nanocomposites. The method is simple and easy to implement, raw materials are easy to obtain, and the cost is low; the nanocomposite has high visible light catalytic activity on the reduction of bromate and hexavalent chromium in water, and can be applied to treating bromate and hexavalent chromium pollutants in water as a new visible light catalyst.

The invention provides a preparation method and application of a foamed nickel-loaded Ru-Ni (OH) 2 electrode with better catalytic performance, and the foamed nickel-loaded Ru-Ni (OH) 2 electrode is prepared by the following steps: (1) putting an initial foamed nickel carrier into a hydrochloric acid solution with the molar concentration of 3mol / L for ultrasonic etching, then taking out the initial foamed nickel carrier, and carrying out ultrasonic treatment with ethanol and deionized water respectively; (2) putting the foamed nickel in the step (1) into a homogeneous solution of nickel nitrate, ammonium fluoride and urea, carrying out hydrothermal reaction, taking out after the hydrothermal reaction is finished, cleaning with ethanol and deionized water, and drying to obtain foamed nickel loaded with nickel hydroxide; and (3) immersing the foamed nickel loaded with nickel hydroxide in the step (2) into a ruthenium trichloride solution for ion exchange, taking out the electrode after ion exchange is completed, washing with water, and drying to obtain the foamed nickel loaded Ru-Ni (OH) 2 electrode. The foamed nickel loaded Ru-Ni (OH) 2 electrode prepared by the method disclosed by the invention shows an excellent removal effect on bromate in wastewater, and the prepared electrode has relatively high stability.

The application provides a preparation method of a silver-copper ferrite-iron-based metal organic framework composite material, and comprises the following steps: step S1, a copper ferrite material is prepared by improving a pH value and a hydrothermal temperature and by adding different additives through a modified solvothermal method; step S2, an iron-based metal organic framework material is prepared by improving a pH value and stirring conditions at room temperature through a sol-gel method; step S3, a heterostructure is formed by combining the copper ferrite material and the iron-based metal organic framework material through an ultrasonic method, so that a copper ferrite-iron-based metal organic framework composite material is obtained; and step S4, a silver quantum dot is photo-deposited on the surface of the copper ferrite-iron-based metal organic framework composite material through a photo-deposition method, so that a silver-copper ferrite-iron-based metal organic framework composite material is prepared. The silver-copper ferrite-iron-based metal organic framework composite material prepared by the application can be used for removing oxygen-containing acid salt pollutants in drinking water, such as nitrate, bromate and chlorite, and has a wide application prospect.

The present invention relates to a kind of synthesis process of thiabendazole, including:Using lactic acid and o-phenylenediamine as raw materials, solid acid is used as catalyst condensation reaction in water to obtain 2 α hydroxyethyl benzimidazole;2 α hydroxyethyl benzimidazole, micron-grade magnetic iron powder are mixed and put into water, hydrogen peroxide is added for catalytic oxidation, and 2 acetyl benzimidazole is obtained;2 acetyl benzimidazole is put into glacial acetic acid, bromine is added, and the MOF powder of trivalent Fe as central metal is catalyst, bromine substitution reaction is carried out, and 2 dibromoacetyl benzimidazole hydrobromide is obtained;Formamide and phosphorus pentasulfide are put into ethyl acetate, 30 45 DEG C of reaction 1 2h, 2 dibromoacetyl benzimidazole hydrobromide is added, ammonia catalytic cyclization reaction is passed through, and reaction is filtered after terminating, and filtrate cools down and precipitates solid, separates solid, washes, and obtains thiabendazole. The present invention can obtain higher yield than prior art, and reaction conditions are mild, catalyst and solvent are easily separated and recycled, reduces waste of raw materials, and reduces resource recovery difficulty.

This invention discloses a method for the etherification of 5-cyanodiol hydrochloride to citalopram bromate using a dehydration membrane. The method includes: adding 5-cyanodiol hydrochloride, toluene, and a strong acid resin catalyst to a round-bottom reaction flask equipped with a magnetic stirrer; placing a water separation membrane in the reaction flask; maintaining a high vacuum on the permeate side of the water separation membrane; and then heating the reaction on a magnetically stirred heater. In the toluene system, the water separation membrane removes the water generated in situ through vapor permeation, driving the reaction forward, breaking the thermodynamic equilibrium constraint, improving product yield and purity, and achieving coupling of reaction and separation. This invention uses a strong acid resin catalyst coupled with a water separation membrane, resulting in a simple reaction procedure and favorable reaction conditions; the catalyst is safe and stable, with a low risk factor, is a green catalyst, can be recycled, and is easily separated from the reaction liquid; the water separation membrane removes water in situ through vapor permeation, improving raw material conversion rate and product purity.

The invention provides a synthesis method of an (E)-2-methylpentyl-1, 3-diene compound, which comprises the following steps: by taking a compound as shown in a formula (3) as a raw material, reacting in an organic solvent under the action of triethylamine hydrobromide (Et3N.HBr) to generate the (E)-2-methylpentyl-1, 3-diene compound as shown in a formula (4). The method can be carried out under mild conditions, and the problems that traditional metal catalysis or strong acid catalysis is poor in compatibility with sensitive functional groups, harsh in reaction condition, serious in environmental pollution and the like are solved; meanwhile, the substrate is high in universality and can be compatible with electron-donating and electron-withdrawing substituted benzene ring substrates and various heteroaromatic ring substrates; besides, post-treatment of the product is simple and convenient, a high-purity product can be obtained through conventional column chromatography, and a brand new scheme is provided for green synthesis of isoprene fine chemicals.

The invention discloses a transition metal nanoparticle graphene oxide self-assembled catalytic membrane for effectively removing oxysalt in a water body, and belongs to the technical field of water treatment functional membranes. A transition metal nanoparticle (such as iron, manganese and the like) dispersion liquid and a graphene oxide dispersion liquid are directly mixed, and the composite catalytic membrane is formed through self-assembly by utilizing the interaction between nanoparticles and graphene oxide lamellas. Metal ion adsorption and in-situ reduction steps are not needed, the process is simple and efficient, and large-scale preparation is easy. The obtained composite membrane has a remarkable nano confinement effect, can efficiently activate sulfite to generate reducing free radicals and rapidly degrade oxysalt pollutants such as bromate in a water body, the removal rate of 80 micrograms / L bromate in 3 minutes exceeds 96%, and the composite membrane has good stability and reusability.

The invention provides a temperature-resistant shape memory polymer plugging agent as well as a preparation method and application thereof, and belongs to the technical field of petroleum and natural gas drilling. The preparation method of the plugging agent comprises the following steps: mixing acetic acid and perchloric acid to obtain mixed acid, then adding bromate, potassium permanganate and natural crystalline flake graphite, and carrying out stirring reaction to obtain low-temperature expanded graphite; the preparation method comprises the following steps: mixing cyanate ester, straight-chain aliphatic epoxy resin and a reactive diluent, then adding low-temperature expanded graphite, an organic tin compound and an amine catalyst, and carrying out a curing reaction to obtain the temperature-resistant shape memory polymer material, testing the glass transition temperature Tg of the synthesized temperature-resistant shape memory polymer material, compressing at (Tg + 5)-(Tg + 10) DEG C, cooling, crushing and granulating to obtain the temperature-resistant shape memory polymer material. The plugging agent disclosed by the invention can quickly recover to the original shape at high temperature, is stacked to plug a leakage channel, forms a high-strength plugging layer in a crack, and meets the requirements of safe and efficient drilling.

The invention discloses a preparation method of 2-bromo-6-fluoroaniline, and belongs to the technical field of organic synthesis. Specifically, the method comprises the following steps: 1) adding 2-fluoroaniline to sulfuric acid, heating the temperature to 180-200°C to complete the reaction, cooling the temperature to room temperature, adding hydrogen bromide and hydrogen peroxide solution, then heating the temperature to 35-45°C to react, and obtaining 3-amino-5-bromo-4-fluorobenzenesulfonic acid hydrobromide through post-treatment; 2) dissolving 3-amino-5-bromo-4-fluorobenzenesulfonic acid hydrobromide in anisole, then dripping sulfuric acid, heating the temperature to 50-60°C until the reaction is completed, and obtaining 2-fluoro-3-bromoaniline through post-treatment. In the process of preparing 3-amino-5-bromo-4-fluorobenzenesulfonic acid hydrobromide, the present invention adopts a one-pot reaction of 98% sulfuric acid, reduces the post-treatment steps, and reduces the discharge of a large amount of waste water; anisole is used as a solvent in the desulfonation step, and the sulfonic acid removed in the reaction process is transferred to the electron-rich anisole, so that the desulfonation temperature is reduced from 200 DEG C to 50-60 DEG C, which greatly reduces the production energy consumption and is suitable for industrial production.

The invention discloses a gradient separation and recovery method for halogen in combustion tail gas, and belongs to the technical field of environmental protection. The method comprises the following steps: spraying combustion tail gas introduced into a spraying tower by utilizing spraying liquid containing alkaline earth metal ions, reacting calcium ions in the spraying liquid with hydrogen fluoride to generate alkaline earth metal fluoride precipitate, and filtering to separate calcium chloride precipitate and tail gas absorption liquid; the tail gas absorption liquid is conveyed into the electrochemical treatment tank for electrochemical treatment, and bromide ions in the tail gas absorption liquid are oxidized into bromate ions, so that chloride and bromate in reaction effluent can be separated by using a nanofiltration membrane in subsequent steps; the halogen is separated and recycled from the tail gas through an integrated process of spraying, electrochemical treatment and membrane separation, so that the integration of pollution reduction and recycling is realized, the waste gas treatment process is simplified, the waste gas treatment cost is favorably reduced, and the conversion from the halogen pollution attribute to the resource attribute is innovatively realized.

This invention discloses a method for the cascade separation and recovery of halogens from combustion exhaust gas, belonging to the field of environmental protection technology. This invention utilizes a spray liquid containing alkaline earth metal ions to treat the combustion exhaust gas fed into a spray tower. Calcium ions in the spray liquid react with hydrogen fluoride to form alkaline earth metal fluoride precipitates. The alkaline earth metal fluoride precipitates and exhaust gas absorbent are separated by filtration. The exhaust gas absorbent is then transported to an electrochemical treatment tank for electrochemical treatment, oxidizing bromide ions in the absorbent to bromate ions. This allows for subsequent separation of chlorides and bromates in the reaction water using a nanofiltration membrane. This invention, through an integrated process of "spraying + electrochemical treatment + membrane separation," separates and recovers halogens from exhaust gas, achieving integrated pollution reduction and reuse, simplifying the waste gas treatment process, reducing waste gas treatment costs, and innovatively transforming halogens from a pollution resource.

Methods and systems for the controlled production of aqueous halogen solutions with different compositions are disclosed. According to an embodiment, an aqueous solution of hypochlorite ions is modified by sequentially adding a pH-adjusting chemical, a non-chloride halide ion, and a halogen stabilizing compound. Sensors for measuring the physical and chemical properties of the solution that change due to the effects of various chemical reactions are connected to a control system, which in turn can control the input of one or more chemicals. The control system facilitates the production of a solution having desired characteristics in terms of pH, specific halogen composition, and halogen stability, and limits the production of undesired by-products, such as bromate ions.

The invention provides a zinc-bromine battery based on a violuric acid ammonium modified electrolyte and a preparation method of the zinc-bromine battery, and belongs to the field of batteries. According to the zinc-bromine battery, potassium hydroxide, potassium bromate and ammonium mureate are added into a high-concentration zinc bromide solution to serve as electrolyte, graphite paper serves as a positive electrode, and a zinc sheet serves as a negative electrode. According to the method, the ammonium mureate additive is added into the zinc bromide aqueous solution to form a complex with bromide ions, potassium bromate is used for inducing disproportionation reaction of the bromide ions, the capacity of the zinc-bromine battery can be improved, the service life of the zinc-bromine battery can be prolonged, a soft package battery can be manufactured, and a membrane-free and flow-free box-packed battery can also be manufactured. Compared with a zinc-bromine battery proposed in recent years, the graphite paper and the zinc sheet which are low in price and stable in performance are directly used as electrode materials, use of expensive materials and a complex process are avoided, the manufacturing cost of the battery is reduced, and harm of the battery materials to the environment is reduced.

The application relates to a neodymium-doped phenethylamine lead bromide monocrystal capable of greatly shortening light emission decay time and an application thereof, and solves the technical problem of long light emission decay time of an existing phenethylamine lead bromide monocrystal. The neodymium-doped phenethylamine lead bromide monocrystal capable of greatly shortening light emission decay time is prepared by the following steps: 1) weighing; phenethylamine hydrobromide, lead bromide and neodymium bromide are weighed and placed in a glass bottle; the mass ratio of the phenethylamine hydrobromide, the lead bromide and the neodymium bromide is (2.0-2.4):0.8:0.2; 2) obtaining a precursor solution; N,N-dimethylformamide is added to the glass bottle, heated and stirred until completely dissolved to obtain the precursor solution; 3) obtaining a crystal; the precursor solution is filtered and then placed in a glass beaker to crystallize, so that the neodymium-doped phenethylamine lead bromide monocrystal is obtained, the light emission decay time of which can be greatly shortened by about 3 times, but the quantum yield is not significantly reduced.

The invention discloses a hydrated electronic solution for degrading pollutants and application thereof, and belongs to the technical field of pollutant degradation, and the hydrated electronic solution is prepared by dropwise adding a PBS solution into [Bmim] PF6 and [C16mim] PF6 under an ultrasonic condition. The ionic liquid reverse micelle containing strong reducing hydration electrons prepared by the preparation method disclosed by the invention can be used for degrading pollutants, the preparation method is simple, the preparation cost is low, and the degradation rates of perfluorooctanoic acid and bromate can respectively reach 75% and 91% or above after potassium iodide is added.

The invention discloses an o-phenylenediamine borane derivative as well as a preparation method and application thereof in treatment of morphine addiction, and the preparation method comprises the following steps: carrying out substitution reaction on an o-nitroaniline compound and 2-(N, N-dimethylamino) ethyl bromohydrobromide under the action of alkali to obtain a compound c; reducing nitryl by the compound c under the action of a reducing agent to obtain a compound d; and reacting the compound d under the action of BH3. THF to obtain the o-phenylenediamine borane derivative. Compared with DMT, the o-phenylenediamine borane derivative prepared by the preparation method disclosed by the invention has the advantage that the anti-neuroinflammation activity is remarkably improved.

The application discloses a hydrated electron solution for degrading pollutants and application thereof, and belongs to the technical field of pollutant degradation. 16 The PBS solution is prepared under ultrasonic conditions by dropwise adding the [Bmim]PF6 and [C The preparation method of the application can be used for degrading pollutants, is simple, has low preparation cost, and can reach degradation rates of 75% and above for perfluorooctanoic acid and bromate after adding potassium iodide, respectively.

The synthesis process comprises the following steps: by taking lactic acid and o-phenylenediamine as raw materials, carrying out condensation reaction in water by taking solid acid as a catalyst to obtain 2-alpha-hydroxyethyl benzimidazole; the preparation method comprises the following steps: mixing 2-alpha-hydroxy ethyl benzimidazole and micron-sized magnetic iron powder, putting the mixture into water, and adding hydrogen peroxide for catalytic oxidation to obtain 2-acetyl benzimidazole; the preparation method comprises the following steps: putting 2-acetylbenzimidazole into glacial acetic acid, adding bromine, and carrying out bromine substitution reaction by taking MOF (Metal Organic Framework) powder taking trivalent Fe as a central metal as a catalyst to obtain 2-dibromoacetylbenzimidazole hydrobromide; the preparation method comprises the following steps: adding formamide and phosphorus pentasulfide into ethyl acetate, reacting at 30-45 DEG C for 1-2 hours, adding 2-dibromoacetyl benzimidazole hydrobromide, introducing ammonia gas to catalyze a cyclization reaction, filtering after the reaction is finished, cooling filtrate to separate out a solid, separating the solid, and washing to obtain the thiabendazole. Compared with the prior art, higher yield can be obtained, the reaction conditions are mild, the catalyst and the solvent are easy to separate for recycling, raw material waste is reduced, and the resource recovery difficulty is reduced.