36 results about "Para-Benzoquinone" patented technology

The application discloses a method for realizing resource utilization of phenol pollutants in water by using a nickel-ruthenium hybrid electrocatalyst, and belongs to the technical field of environmental electrocatalytic water treatment. The nickel-ruthenium hybrid electrocatalyst loaded on carbon cloth is prepared by using a simple two-step electrodeposition method, aiming at problems such as high energy consumption, high material consumption and high carbon emission of a traditional wastewater treatment mode. The catalyst has high stability and high selectivity, and can realize directional conversion of phenol pollutants in water into high-value p-benzoquinone under mild conditions, so as to simultaneously realize removal of the phenol pollutants in water and recovery of high-value-added chemicals. The application provides a new method for treatment and resource utilization of high-concentration phenol wastewater.

The application provides a synthesis method of p-benzoquinone dioxime. The synthesis method comprises the following steps: (1) adding solid acid into an ethanol solution of phenol to obtain a mixed solution A, then vacuumizing and filling with inert gas; dissolving nitrite into ethanol, uniformly mixing to obtain an ethanol solution of nitrite, then vacuumizing and filling with inert gas; in an inert gas atmosphere, adding the ethanol solution of nitrite into the mixed solution A dropwise to perform nitrosation reaction, to obtain a reaction liquid B; in the inert gas atmosphere, adding an ethanol solution of hydroxylamine into the obtained reaction liquid B to perform oximation reaction; after the reaction is completed, filtering the obtained reaction liquid C, performing reduced pressure distillation on the obtained filtrate, and performing washing, filtering and drying on the obtained residual liquid of the reduced pressure distillation, to obtain p-benzoquinone dioxime. The method provided by the application reduces the occurrence of side reactions, improves the conversion rate of the reaction, and improves the yield and purity of p-benzoquinone dioxime.

This invention provides a method for preparing dibenzoyl-p-benzoquinone dioxime using a microchannel reactor. The method includes the following steps: 1,3-dicyclohexylcarbodiimide and a catalyst are mixed uniformly and preheated to obtain a premix; a chloroform solution of p-benzoquinone dioxime, a chloroform solution of benzoic acid, and the premix are simultaneously introduced into the microchannel reactor for reaction; the resulting reaction solution is subjected to vacuum distillation, washing, filtration, and drying to obtain dibenzoyl-p-benzoquinone dioxime. The synthesis method of this invention features high reaction conversion rate, high production efficiency, few side reactions, and high safety. The obtained dibenzoyl-p-benzoquinone dioxime product has stable quality. Furthermore, the organic solvent used can be recovered and reused after vacuum distillation, overcoming the problems of inaccurate temperature control, poor safety, numerous side reactions, and difficult waste treatment in traditional processes. This provides a new approach for the synthesis of dibenzoyl-p-benzoquinone dioxime.

The invention belongs to the technical field of compositions of high-molecular compounds, and particularly relates to a rubber composite material as well as a preparation method and application thereof. The rubber composite material is prepared from the following components in parts by mass: 85-92 parts of rubber powder, 1-2 parts of an ethylene-vinyl acetate copolymer, 1.2-1.8 parts of epoxidized natural rubber, 1-3.5 parts of an activating agent, 3-6 parts of a modifying agent, 1.5-3 parts of a bulking agent and 0.5-1 part of a compatibility accelerant, the modifying agent is prepared by compounding disulfide-bismaleimide ethane, p-benzoquinone dioxime, hydrogenated castor oil and hyperbranched polyglycidyl ether; the preparation method comprises the following steps: mixing all the components to prepare the rubber composite material; the application comprises the following steps: heating the asphalt, adding the rubber composite material, uniformly mixing, and shearing to obtain the rubber modified asphalt. When the rubber modified asphalt is prepared, the compatibility of the asphalt and the rubber powder is effectively improved in a high-mixing-amount environment of the rubber powder by adding a modifying component.

The invention provides an inorganic matter and cationic organic matter compounded clay stabilizer for water injection, and discloses that trimethyl monoallyl ammonium chloride is used as a raw material, and polymerization in the use process is prevented after a p-benzoquinone polymerization inhibitor is added, so that cationic monomer micromolecules containing double bonds are used as an organic clay stabilizer, and the stability of the organic clay stabilizer is improved. When being used together with the same raw material cationic organic matter with small molecular weight, namely 2-hydroxyethyl trimethyl ammonium chloride, the clay swelling prevention agent has the performance of preventing clay swelling, anti-scouring capability and long-term effect, and has better performance of preventing clay swelling after being compounded with cheap inorganic raw materials, namely aluminum chloride, dipotassium phosphate and industrial ammonium chloride; the prepared clay anti-swelling agent compounded by the inorganic matter and the cationic organic matter not only has excellent capacity of preventing clay swelling, but also has good anti-scouring capacity and good washing resistance, and an innovative demonstration effect is achieved for preventing damage of clay swelling and migration to a reservoir in water injection and improving the water injection recovery ratio.

The application provides a preparation method of dibenzoyl-p-benzoquinone dioxime. The method comprises the following steps: (1) adding a heteropoly acid catalyst into an ethanol solution of p-benzoquinone dioxime to obtain a mixed solution; (2) adding an ethanol solution of benzoic acid into the obtained mixed solution, and then performing a reaction; after the reaction is completed, filtering the obtained reaction liquid, drying and screening the obtained filter residue to obtain dibenzoyl-p-benzoquinone dioxime. The method uses p-benzoquinone dioxime and benzoic acid as raw materials, uses ethanol as a reaction solvent, uses a heteropoly acid as a catalyst for a condensation reaction, and synthesizes dibenzoyl-p-benzoquinone dioxime in one step. The solvent ethanol used in the method can be recovered and reused through reduced pressure distillation, and the catalyst heteropoly acid can be recycled and reused after being filtered, so that the output of acidic production wastewater is reduced, the generation of strong corrosive hydrogen chloride gas is avoided, and the green environmental protection requirement is met.

This invention relates to an EPDM-based crosslinked rubber material and its preparation method. The rubber material is obtained by vulcanizing raw rubber composed of EPDM rubber, maleic anhydride-grafted polyethylene, a peroxide vulcanizing agent, ethylene glycol dimethacrylate, p-benzoquinone dioxime, lead metal oxide, paraffin oil, a silane coupling agent, and an antioxidant. The EPDM-based crosslinked rubber material obtained by this invention has a double crosslinked structure. The formulation system endows EPDM rubber with excellent physical and mechanical properties, electrical insulation properties, and aging resistance, while also possessing good injection molding performance. This material solves the problems of high prices and long procurement cycles associated with imported finished products, providing an efficient and economical solution for the production of cable accessories.

The invention relates to the technical field of preparation of metal organic composite materials, in particular to a copper-tetracyano p-benzoquinone dimethane metal organic composite material and a preparation method thereof.The preparation method comprises the steps that a Cu source and TCNQ are subjected to ball milling treatment in the absence of a solvent or under the action of the solvent, the Cu source and the TCNQ are subjected to a solid-phase charge transfer reaction, and the Cu source and the TCNQ are subjected to solid-phase charge transfer reaction; according to the copper-tetracyano p-benzoquinone dimethane metal organic composite material, a mechanochemical ball milling method is adopted, rapid coordination reaction of copper ions and TCNQ ligands is achieved under the solvent-free condition, and the copper-tetracyano p-benzoquinone dimethane metal organic composite material has the advantages of being simple in process, environmentally friendly, high in efficiency and the like.

This invention provides a metal-doped electrode and a method for the electrochemical oxidation of phenol to prepare p-benzoquinone. The metal-doped electrode comprises a conductive substrate material and lead, manganese, and ruthenium metals attached to the surface of the conductive substrate material, wherein the mass ratio of lead, manganese, and ruthenium is 60-95%:2-25%:2-15%. The method for the electrochemical oxidation of phenol to prepare p-benzoquinone uses the metal-doped electrode of this invention as the anode and a lead electrode as the cathode in a two-chamber electrolytic cell containing a diaphragm, and electrolyzes phenol to prepare p-benzoquinone under acidic conditions. The electrode of this invention is corrosion-resistant under acidic conditions and has a long service life. Current density >4000 A / m 2 By controlling the current density, the selectivity of benzoquinone is >90%. The electrode materials used are inexpensive and readily available, the electrochemical process is simple, and the process is safe and reliable, showing great promise for industrialization.

The invention discloses a method for reducing hexavalent chromium by using tire rubber additive-quinone derivative reinforced shewanella, and the method comprises the following steps: S1, preparing an N-(1, 3-dimethylbutyl)-N '-phenyl p-benzoquinone concentrated solution; s2, a culture medium is prepared, Shewanella oneidensis MR-1 is activated, and a bacterial suspension is obtained; and S3, the N-(1, 3-dimethylbutyl)-N '-phenyl p-benzoquinone concentrated solution is used for strengthening Shewanella oneidensis MR-1, and hexavalent chromium is reduced. In order to solve the problem of low removal efficiency of high-concentration Cr (VI), the invention provides a method for accelerating the reduction of Cr (VI) by S.oneidensis MR-1 by using the electron shuttle characteristic of 6PPD-Q, and the method has potential environmental restoration and application values.

A method for preparing and applying a silicone rubber / crosslinked polyethylene composite dielectric for cable accessories is disclosed, belonging to the field of composite dielectric preparation methods and applications. The purpose of this invention is to solve the problem in existing technologies where, with long-term cable operation, silicone grease diffuses into the silicone rubber, causing swelling, leading to a decrease in the insulation performance of the silicone rubber and an increase in the failure rate. The method includes: 1. Preparing silicone rubber; 2. Preparing crosslinked polyethylene; 3. Preparing a doped and modified silicone grease; 4. Coating the modified silicone grease onto the surface of the silicone rubber, and then covering it with crosslinked polyethylene. 2,3,5,6-Tetrafluoro-7,7',8,8'-Tetracyanodimethyl-p-benzoquinone is introduced into the silicone grease as a filler to construct carrier traps, hindering carrier injection and transport. Under the synergistic effect of this filler and silicone grease, intermolecular forces are enhanced, silicone grease slippage is reduced, and thus the electrical insulation properties of the silicone rubber-crosslinked polyethylene composite interface are further increased.

The invention discloses a high-wear-resistance and corrosion-resistance sintering machine grate and a preparation method thereof, and belongs to the technical field of metallurgical materials. The method comprises the following steps: selecting polystyrene foam plastic to prepare a foam model; the preparation method comprises the following steps: preparing high-entropy oxide nano powder from ferric nitrate, chromic nitrate, nickel nitrate, manganous nitrate and ammonium molybdate according to a mass ratio, stirring, precipitating, drying, calcining and ball-milling to obtain powder; preparing a water-based binder from polyvinyl alcohol, hydroxypropyl methyl cellulose, lauryl sodium sulfate, p-benzoquinone imine and deionized water according to a mass ratio; preparing an inner-layer coating solution from high-entropy oxide nano powder and a binder in proportion, dip-coating the foam model, and drying to form an inner layer; preparing an outer layer coating solution from nano chromium powder and a binder according to a ratio, and performing dip-coating and drying to form an outer layer; filling refractory sand, pouring high-chromium cast iron alloy melt, and demolding; and tempering at low temperature and strengthening the nano permeation layer. The grate substrate and the double-layer nano coating are cooperated, so that the service life is prolonged, and the cost is reduced.

The invention relates to the technical field of ternary organic solar cells, in particular to a high-efficiency ternary organic solar cell active layer and a preparation method thereof.A modular monomer library containing a p-benzoquinone-benzidine structure is constructed, the monomer library comprises three monomers M1, M2 and M3, third components P1, P2 and P3 are synthesized through functional group regulation and control and a one-step polymerization process, and the third components P1, P2 and P3 are synthesized through a one-step polymerization process; a ternary blending active material for constructing an intermediate coating of a device is prepared, in a final assembly structure of the device, the upper layer is PNDIT-F3N, the middle layer is a ternary active layer obtained by blending P1, P2, P3, D18 and L8-BO, and the lower layer is PEDOT: PSS. Through structural regulation and control of a dynamic adjustable monomer library, one-step synthesis of three differentiated third components is realized, and the preparation process is simple and convenient. Complex modification or noble metal catalysts are not needed, so that the cost is reduced.

The patent relates to a method for preparing marine terpenoid natural products based on a decarboxylation coupling reaction of carboxylic acid salt of sclareolide or carboxylic acid of sclareolide and quinone compounds, and belongs to the field of chemical synthesis. The method takes sclareolide as raw material, and realizes, for the first time, a Minisci decarboxylation coupling reaction of carboxylic acid salt of bicyclic sesquiterpene or carboxylic acid of sclareolide and p-benzoquinone promoted by Selectfluor, so that the synthesis steps of yahazunone are shortened from the previous 6-18 steps to 2 steps, and asymmetric synthesis of multiple yahazunone natural products is realized. The method has the characteristics of good step economy, simple operation and suitability for industrial production.

The invention belongs to the technical field of catalytic materials, and discloses a rare earth doped catalyst, a preparation method thereof and application of the rare earth doped catalyst in oxygen evolution reaction. The preparation method of the rare earth doped catalyst comprises the following steps: in a protective gas atmosphere, mixing tetraamino p-benzoquinone, ferric chloride, rare earth salt and a solvent, then adding foamed nickel, heating for reaction, and separating to obtain the rare earth doped catalyst, the rare earth salt comprises cerium salt, erbium salt or lanthanum salt. The rare earth doped catalyst has good OER catalytic activity and high stability, does not contain precious metal, is low in cost, and has performance superior to that of commercial RuO2. The catalyst can be widely applied.

This invention discloses a method for preparing and applying highly dense silver-coated copper powder. The method comprises the following steps: First, in a first solvent, pretreated copper powder, a copper complexing agent, a dispersant, p-benzoquinone, and slow-release microspheres coated with a reducing agent are mixed, and the pH is adjusted to 10-11.5 to obtain a first mixture; then, silver ammonia solution is added, and the reaction proceeds to obtain a second mixture; wherein the redox potential during the reaction is 0.6-0.75V; finally, the second mixture is cooled, washed, and dried, and then processed by an air jet mill to obtain the final product. This method eliminates the need for a complex silver liquid / reducing agent dropwise control system, requiring only temperature and stirring control. The reaction endpoint is determined by monitoring the ORP, which helps reduce operational difficulty and uncertainty in industrial scale-up. Furthermore, the resulting silver-coated copper powder exhibits advantages such as high density and low volume resistivity.

Disclosed in the present invention are a release agent with low release-force increase and high residual adhesion and a preparation method therefor, and a release film. The release agent comprises the following raw material components in parts by weight: 5-20 parts of diol hydroxyl double-end silicone oil, 1-6 parts of a reactive diluent, 20-80 parts of isocyanato acrylate, 0.025-1 parts of p-benzoquinone, 0.01-0.04 parts of a catalyst, 15-60 parts of a solvent, 0.75-3 parts of 3,4-ethylenedioxythiophene, and 0.25-1 parts of a photoinitiator. A silicone release film prepared by the present invention has low release-force increase and high residual adhesion properties, a uniform and stable release coating, and good weather resistance, is more environmentally friendly, and has a stable peeling effect on tapes.

The invention relates to the technical field of preparation of quinazolinone derivatives. The invention provides a method for preparing a quinazolinone derivative, which comprises the following steps of: adding a compound with a general formula 1, benzisoxazole, 2, 3-dichloro-5, 6-dicyanobenzoquinone and cuprous iodide into 1, 2-dichloroethane to react, and the chemical equation of the reaction is shown in the specification; wherein R is hydrogen, methyl, ethyl or methoxyl. The method provided by the invention takes copper as a catalyst, and has the characteristics of high stereoselectivity and single product geometric configuration. The copper catalyst is cheap and low in toxicity, and meets green chemical requirements; reaction conditions are mild, and industrial amplification is easy; meanwhile, by-products are few, and atom economy is good.

This invention relates to the field of nitric oxide donor technology, and particularly to a porphyrin-fused nitric oxide donor, its preparation method, and its application. The method includes the following steps: mixing an aromatic aldehyde containing a halomethyl group, potassium carbonate, and a solution of 3-trifluoromethyl-4-nitrophenol, reacting the mixture, extracting and washing, drying the organic phase, and concentrating under vacuum; purifying the first crude product by column chromatography; dissolving the NO donor intermediate, adding pyrrole for degassing, adding trifluoroacetic acid, then adding a solution of 2,3-dichloro-5,6-dicyanobenzoquinone; after the reaction is complete, adding triethylamine; recrystallizing and dissolving the second crude product, adding petroleum ether for sealing and freezing; filtering, washing the precipitate, drying, and purifying by column chromatography to obtain the porphyrin-fused nitric oxide donor. This method achieves spatial confinement and fixation of the NO donor group, integrating photodynamic therapy, gas therapy, and fluorescence tracer functions, and solves the problems of low spatial and temporal control precision, difficulty in balancing stability and release efficiency, and limited functionality of existing NO donors.

The invention provides a device and a method for improving the preparation precision of an ultra-low concentration TOC standard solution, the device comprises a first liquid inlet pipeline for inputting dilution water, a second liquid inlet pipeline for adding a standard solution into the first liquid inlet pipeline, and a mixing part for mixing the dilution water and the standard solution, the standard solution adopts a 1, 4-p-benzoquinone solution, and the second liquid inlet pipeline adopts a 1, 4-p-benzoquinone solution. The mixing part is connected with a TOC (Total Organic Carbon) analyzer and a detector for measuring the concentration of a 1, 4-p-benzoquinone solution, and the first correction part is used for correcting an output value of a standard solution according to a test result of the detector; and the second correction part is used for correcting and calibrating the TOC analyzer according to the output value of the standard solution calibrated by the first correction part, and correction is performed twice according to the device, so that the error of the whole set of sample preparation system can be eliminated, and the ultralow-concentration TOC detector can be accurately calibrated.

This invention discloses an anti-corrosion coating material based on a metal coordination structure, its preparation method, and its application. The anti-corrosion coating material is based on a traditional zinc anti-corrosion system, incorporating a metal coordination polymer containing a dihydroxy-p-benzoquinone (DHBQ) ligand. This polymer self-assembles to form a stable coordination complex Co(dhbq)₃@Zn. Due to the highly ordered and dense structural characteristics of the metal coordination polymer Co(dhbq)₃ and the dynamic response properties of its reversible coordination bonds, it can effectively construct a dense barrier layer to prevent the penetration of corrosive media. Furthermore, its dynamically reversible metal coordination bonds can spontaneously reconstruct under environmental stimuli after the coating is damaged, thereby achieving in-situ self-repair of the metal surface. This anti-corrosion coating material not only significantly inhibits corrosion propagation but also effectively extends the service life of the zinc coating, improving the long-term protective performance of the entire coating system and providing a durable, efficient, and environmentally friendly anti-corrosion solution for the protected metal materials.

The utility model discloses an alkyl p-benzoquinone production device, and relates to the technical field of alkyl p-benzoquinone production, an inlet of a reaction kettle is respectively communicated with a benzoquinone tank, an alkyl reagent tank, an AlCl3 catalyst tank and a toluene solvent tank, an outlet of the reaction kettle is communicated with a standing layering tank, an outlet of the standing layering tank is communicated with a reduced pressure distillation tank, and the reduced pressure distillation tank is communicated with a toluene solvent tank. A bottom outlet of the reduced pressure distillation tank is communicated with a dissolving tank, an inlet of the dissolving tank is communicated with an ethanol-water solvent tank, an outlet of the dissolving tank is communicated with a recrystallization tank, an outlet of the recrystallization tank is communicated with a first centrifugal machine, a solid phase outlet of the first centrifugal machine is communicated with a first dryer, and an outlet of the first dryer is communicated with an alkyl p-benzoquinone finished product tank. The automation degree is high, manual operation is reduced, the production efficiency is improved, and the consistency and stability of products are guaranteed. And the product is high in yield and purity, low in production cost and environment-friendly.

The invention belongs to the field of new energy materials, and particularly relates to a negative electrode electrolyte with a phenazine group and application of the negative electrode electrolyte in an aqueous organic flow battery. The preparation method comprises the following steps: carrying out dehydration condensation on 2, 3-dimethyl p-benzoquinone and 3, 4-diaminobenzoic acid to prepare HDMPC; 2-chloro-3-nitrobenzoic acid and 2-aminophenylacetic acid react to obtain an intermediate, and then CPCA is obtained through sodium borohydride cyclization. The phenazinyl substance has good solubility and electrochemical performance, the solubility of HDMPC in 1 M LiOH and the solubility of CPCA in 1 M KOH are up to 1.23 M, the solubility of CPCA in 1 M KOH are up to 1.39 M, electrochemical research shows that the equilibrium potentials of HDMPC and CPCA are-0.708 V and-0.475 V respectively, and the phenazinyl substance has rapid oxidation-reduction kinetics. When being used as a negative electrode active material to be applied to the aqueous organic flow battery, the material has the outstanding advantages of high coulombic efficiency, high energy density, long cycle life and the like.

The invention discloses an alkylated pentaptycene organic crystal material, a capillary gas chromatographic column as well as a preparation method and application of the capillary gas chromatographic column, and relates to the technical field of gas chromatography. The preparation method comprises the following steps: S1, adding p-benzoquinone, chloranil and naphthalene into acetic acid, and heating and refluxing to obtain an intermediate I; s2, dissolving the intermediate I, sodium thiosulfate and potassium carbonate in an N, N-dimethylformamide solution, heating, carrying out a reduction reaction, cooling after the reaction is finished, and carrying out post-treatment and purification on a product to obtain an intermediate II; and S3, dissolving the intermediate II and 2-hexyl bromoacetate in an acetone-DMF mixed solvent, carrying out a substitution reaction, and purifying and drying the product to obtain the alkylated pentaptycene organic crystal material. The invention provides a pentaptycene material with a structure different from that in the prior art, the types of gas chromatography stationary phases are enriched, and more optional technical schemes are provided for separation of complex mixtures.

The application discloses an organic carbonyl compound electrode material, a preparation method and application thereof in a lithium ion battery, and the organic carbonyl compound electrode material is dipyrido[3',2':5,6;2'',3'':7,8]quinoxalino[2,3-i]dipyrido[3,2-a:2',3'-c]phenazine-10,21-dione, and the organic carbonyl compound electrode material is obtained through dehydration condensation reaction of 1,2,4,5-tetraamino-p-benzoquinone and 1,10-phenanthroline-5,6-dione. The organic electrode material is used as a positive electrode material in the lithium ion battery, has good dissolution inertness in an electrolyte due to a large conjugated system, and is beneficial to electron transmission, so that the cycle stability and rate performance of the battery are improved. In addition, multiple active sites provide more redox active sites for coordination with lithium ions, reversible lithium storage is realized, and a high capacity is exhibited.

A method for preparing a composite photoelectrode for glucose content detection includes the following steps: adding potassium iodide and bismuth nitrate pentahydrate to a nitric acid solution, adding p-benzoquinone to ethanol, and mixing to obtain electrolyte A; depositing a BiOI thin film on FTO conductive glass using an electrochemical method; dripping a dimethyl sulfoxide solution of vanadium acetylacetonate onto the surface of the BiOI thin film, calcining it, immersing it in NaOH solution, rinsing it, and drying it to obtain a BVO photoelectrode; adding lithium perchlorate and terthiophene to acetonitrile to obtain electrolyte B, and performing photoelectrodeposition on the BVO photoelectrode using an electrochemical method to obtain the composite photoelectrode. The preparation method of this invention is simple and safe to operate, uses readily available materials, and can be mass-produced; the prepared composite photoelectrode, combined with photoelectric detection technology, can detect glucose content, exhibits high stability, simple steps, rapid response, and high sensitivity, providing a new analytical method for glucose content determination.

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

This invention discloses a boron-doped Cu x The O2 composite bismuth vanadate photoelectrode belongs to the field of photoelectrochemical analysis technology. The boron-doped Cu of this invention... x The preparation method of the O2 composite bismuth vanadate photoelectrode includes the following steps: adding potassium iodide and bismuth nitrate to a nitric acid solution to obtain solution A; mixing solution A with a p-benzoquinone solution to obtain electrolyte A; using electrolyte A as the electrolyte, performing a first electrochemical deposition on the surface of the working electrode to obtain a working electrode with a deposited BiOI film; coating the surface of the working electrode with the deposited BiOI film with an acetylacetone vanadium oxide solution, performing a first annealing treatment, and then alkali washing to obtain the bismuth vanadate photoelectrode; adding copper nitrate to a potassium borate buffer solution to obtain electrolyte B; using electrolyte B as the electrolyte, performing a second electrochemical deposition on the surface of the bismuth vanadate photoelectrode, and then performing a second annealing treatment to complete the preparation.

The utility model belongs to the technical field of material separation, and particularly relates to a stripping separation device for p-benzoquinone compounds, which comprises a stripping tower, a primary condensation assembly, a secondary condensation assembly, a vacuum buffer tank, a gas-liquid separation assembly and a tail gas absorption tower, the first-stage condensation assembly is connected with the second-stage condensation assembly through a first-stage condensation gas outlet pipeline, the second-stage condensation assembly is connected with the vacuum buffer tank through a second-stage condensation gas outlet pipeline, and the vacuum buffer tank is connected with the gas-liquid separation assembly through a vacuum gas outlet pipeline. The gas-liquid separation assembly is connected with the tail gas absorption tower through a gas-liquid separation gas outlet pipeline. According to the utility model, the problem of carbonization of p-benzoquinone compounds due to overhigh temperature can be solved by reducing the distillation temperature of the tower top.

The invention discloses a hot-line work self-curing insulating material railway line coating method, and relates to the field of material science. When the insulating material is prepared, DOPO reacts with p-benzoquinone and then reacts with acryloyl chloride to prepare modified DOPO; the preparation method comprises the following steps: reacting cerium oxide with dopamine hydrochloride, and then reacting with vinyl trimethoxy silane to prepare modified cerium oxide; the preparation method comprises the following steps: enabling tetramethyl cyclotetrasiloxane, dihydroxy polysiloxane and tetramethyl ammonium hydroxide silicon alkoxide to react to prepare polysiloxane; the preparation method comprises the following steps: uniformly mixing polysiloxane, the modified 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, the modified cerium oxide, fumed silica and a Karstedt catalyst, and grinding the mixture by a three-roller grinding machine, so as to obtain the high-temperature-resistant polysiloxane composite material. The prepared insulating material is coated by a robot when in use. According to the hot-line work self-curing insulating material railway line coating method, room temperature curing can be achieved, and the flame retardant property and the anti-aging property are excellent.