136 results about "Benzoquinone" patented technology

The invention discloses application of a benzoquinone-based covalent organic framework material as a bifunctional photocatalyst in a photo-assisted lithium-air battery, and the benzoquinone-based covalent organic framework material is prepared by taking cyclohexanehexone octahydrate and 2, 3, 5, 6-tetraaminocyclohexane-2, 5-diene-1, 4-diketone as raw materials, ethylene glycol as a solvent and acetic acid as a catalyst through a hydrothermal reaction. And carrying out Schiff base reaction under the protection of nitrogen atmosphere. The benzoquinonyl covalent organic framework material has a large number of donor and acceptor units, has a wide visible light absorption range, can be used as a photo-assisted lithium-air battery bifunctional photocatalyst, greatly inhibits photon-generated carrier recombination, reduces the over-potential of a photo-assisted lithium-air battery, remarkably improves the battery assembly efficiency, and has a wide application prospect. And a new direction is provided for selection of photocatalysts in the field of lithium-air batteries.

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.

The invention discloses a synthesis method of 9-dichloromethylene-5-amino-benzonorbornene and an intermediate product, the synthesis method comprises the following steps: firstly, synthesizing a cyclization compound 1 as shown in a formula 1 from a cold solution of 6, 6-dichlorofulvene and 1, 4-benzoquinone under the action of a solution of a catalyst I, carrying out oximation reaction on the cyclization compound 1 prepared in the step a and hydroxylamine salt under an alkaline condition, and carrying out post-treatment to obtain the 9-dichloromethylene-5-amino-benzonorbornene. Under the action of a catalyst II, adding the oximate 2 prepared in the step b into a closed container, carrying out hydrogenation reduction to obtain 9-dichloromethylene-5-amino-benzo norbornene, and directly treating the reduction product with acid to obtain 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene. According to the method, the cyclization compound is oximated firstly, then the residual carbonyl and two double bonds on the ring are subjected to one-step reduction through catalytic hydrogenation, the working procedure is optimized, meanwhile, reduction by using expensive sodium borohydride is avoided, the method is short in synthesis route and suitable for industrialization, and the production cost is reduced.

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.

This application relates to electrolytes and electrochemical devices. The electrolyte comprises an active material and a solvent; the active material comprises a polytert-amine-substituted biphenylquinone compound with an oxidation state as shown in Formula I; in Formula I, each R1 is independently a C2-C10 branched or straight-chain alkyl group, and each R2 is independently a C1-C5 straight-chain alkylene group. The active material in the above electrolyte, including a polytert-amine-substituted biphenylquinone compound with a specific structure, possesses high potential, structural stability, and two-electron transfer characteristics, making it less prone to cross-membrane crosstalk leading to battery capacity decay. When the electrolyte containing this active material is used in electrochemical devices such as flow batteries, long-term stable operation can be achieved. Furthermore, the preparation process of this type of biphenylquinone compound is green, simple, low-cost, and easily industrialized, facilitating widespread use. Formula I

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.

Compositions and methods for inhibiting and retarding polymerization of monomeric compositions are described that use a naphthoquinone and an oxygenated aminophenol. When present in a monomer-containing composition, the combination of naphthoquinone and oxygen-containing aminophenol provides an unexpectedly beneficial anti-polymerization agent effect, thereby inhibiting the formation of unwanted fouling polymers. The anti-polymerization agent combination can be added to a hydrocarbon composition, such as petroleum, that can include a polymerizable component, such as styrene, wherein the hydrocarbon composition is purified or processed, such as under distillation.

The invention relates to the technical field of organic synthesis, and discloses a preparation method of trimethylbenzoquinone, which comprises the following steps: mixing a reaction solution containing unsym-trimethylbenzene and an organic solvent with a catalyst, and adding an oxidizing agent to carry out oxidation reaction to obtain trimethylbenzoquinone, wherein the catalyst comprises a pyridine compound and methylrhenium trioxide. According to the method, the unsym-trimethylbenzene is adopted as a raw material, the methylrhenium trioxide and the pyridine compound are adopted as catalysts, the trimethylbenzoquinone is prepared through oxidation of the oxidizing agent, the product yield is high, and the consumption of the oxidizing agent is low.

The invention belongs to the technical field of magnesium ion batteries, and particularly relates to an in-situ synthesized aqueous magnesium ion battery organic composite negative electrode material, a preparation method and a negative electrode. The negative electrode material provided by the invention is a negative electrode material PDBM (at) KB obtained by introducing a formaldehyde solution into a suspension liquid of 2, 5-dihydroxy-1, 4-benzoquinone and conductive carbon which are uniformly mixed, carrying out quinone-aldehyde condensation polymerization under the catalysis of glacial acetic acid and carrying out in-situ synthesis; meanwhile, the distribution of KB in the negative electrode material PDBM (at) KB is further improved through the technological means of ultrasonic dispersion, vacuum infiltration and the like, a rapid ion transmission channel is constructed, the utilization rate of PDBM active substances is remarkably increased, and the aqueous magnesium ion battery with the PDBM / KB as the negative electrode shows high capacity, long circulation, high rate performance and high power performance; therefore, the technical problem that an existing magnesium ion battery electrode material is low in performance is solved.

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.

An object of the present invention is to provide a liquid crystal composition with which a liquid crystal cured layer having both favorable aligning properties and favorable light resistance can be produced; and to provide a benzoquinone derivative, a liquid crystal cured layer, an optical film, a polarizing plate, and an image display device. The liquid crystal composition of the present invention is a liquid crystal composition containing a compound represented by Formula (A) and a liquid crystal compound.

The preparation method comprises the following steps: immobilizing a specific capture antibody Ab1 of a carcino-embryonic antigen on the surface of a gold electrode, closing a non-specific site by bovine serum albumin to obtain a BSA / Ab1 / GE working electrode, capturing the carcino-embryonic antigen, fusing the carcino-embryonic antigen with an enzyme-coated HHOF-Ab2 nano probe, and detecting the enzyme-coated HHOF-Ab2 nano probe to obtain the sandwich type electrochemical immunosensor based on the enzyme-coated hydrogen bond organic framework hybrid catalyst. The enzyme coated HOF-based sandwich type electrochemical immunosensor is obtained; the sensor specifically recognizes CEA through 'Ab1-CEA-Ab2' double antibody sandwich, the cyclic reaction of H2O2 and HQ is catalyzed by virtue of the enzyme-coated HOF nanoprobe to amplify a signal, and finally chemical change caused by oxidizing hydroquinone into benzoquinone is converted into quantifiable current by virtue of an electrochemical workstation, so that ultra-sensitive detection of CEA is realized, and the sensor has the advantages of high sensitivity, high response speed, strong specificity and the like.

This invention belongs to the field of organic framework materials technology, specifically disclosing a highly conductive covalent organic framework material containing antiaromatic units and its preparation method. The material is prepared by reacting 2,5-dihydroxy-1,4-benzoquinone (DHBQ) with an o-diamine derivative to form a covalent organic framework (COF) material with a dihydrotetraazapyronine fusion structure. The invention also discloses the applications of this material in electrocatalysis, charge storage, chemiluminescence sensing, displays, and electronic devices.

A water treatment method comprising electrochemically adsorbing, by using a working electrode formed of an organic redox substance having selective adsorption ability with respect to a specific substance dissolved in water to be treated, the specific substance on the working electrode, wherein the specific substance is ammonium ion, the organic redox substance is a polymer of 2,5-diamino-1,4-benzoquinone, and the ammonium ion is electrochemically adsorbed on the working electrode by applying, to the working electrode immersed in the water to be treated, a first prescribed voltage determined by using the minimum current value of a cyclic voltammogram with respect to the ammonium ion as an index.

The invention belongs to the technical field of synthesis of fine chemical intermediates, and particularly relates to a continuous flow synthesis method and device of 2-methylbenzoquinone. The method comprises the following steps: a) dissolving 2-methylphenol and a Schiff base cobalt catalyst in an organic solvent to prepare a raw material solution; b) conveying the raw material liquid to a microreactor by using a pump, mixing the raw material liquid with oxygen or air in the conveying process, and then carrying out continuous oxidation reaction under certain reaction conditions to generate 2-methylbenzoquinone; and c) separating and purifying the reaction product to obtain the 2-methylbenzoquinone product.The micro-channel reactor is adopted to strengthen mass transfer and reduce the safety risk, the Schiff base cobalt is used as the catalyst, air or oxygen is used as the oxidizing agent, the reaction efficiency and yield are improved, pollution is reduced, and efficient, green and safe production is achieved.

According to the polyquinone diazacyclo organic positive electrode material and the preparation method thereof, the organic positive electrode material can be applied to lithium ion, sodium ion, potassium ion and multivalent ion batteries, the synthesis method is simple, and large-scale preparation can be realized. According to the organic positive electrode material, quinone is used as a redox unit, a dinitrogen heterocyclic ring is used as a connecting structure, the prepared polymer has proper flexibility, a proper space is provided for intercalation / deintercalation, and good cycle performance is shown in a multivalent ion battery. According to the preparation method, 2, 5-halogenated-1, 4-benzoquinone derivatives and diazacyclo derivatives are used as reaction raw materials to carry out condensation reaction. Experiments prove that by taking the poly (2, 3, 5, 6-tetrachloro-1, 4-benzoquinone-imidazoline) positive electrode material as an example, in the application of the zinc ion battery, the capacity retention ratio is 82% after 250 cycles under the current density of 0.1 A g <-1 >.

The invention provides a benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative and a preparation method and application thereof.The benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative is of an asymmetric multi-carbonyl quinone phenazine structure, contains a plurality of oxidation-reduction active sites and can show excellent oxidation-reduction performance, molecules of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative are of a conjugated structure, hydrogen bonds exist between the molecules, and the structure of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative can be used for preparing the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative. And the material is difficult to dissolve in an electrolyte, and has stable electrochemical performance in an ion battery. The preparation method of the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative comprises the following steps: carrying out condensation reaction on a 2, 3-diaminonaphthalene-1, 4-diketone derivative and 2, 3, 5, 6-tetrahydroxy-1, 4-benzoquinone to obtain an intermediate; and then oxidizing the intermediate to obtain the benzo [b] phenazine-1, 2, 3, 4, 6, 11-hexanone derivative disclosed by the invention.

This primary battery comprises a positive electrode containing 2,5-dimethoxy-1,4-benzoquinone, a negative electrode, and an electrolyte disposed between the positive electrode and the negative electrode. The electrolyte contains a C18-22 alkyl glucoside.

The invention discloses an alpha-fluoro alpha, beta-unsaturated amide derivative as well as a synthesis method and application thereof. The preparation method comprises the following steps: by taking amyl-1, 1, 2-trifluoro-1, 4-diene which is simple and convenient to prepare and a cheap and abundant amine compound as raw materials, an allyl palladium chloride dimer as a transition metal catalyst, 1, 4-bis (diphenylphosphine) butane as a ligand and 2, 5-di-tert-butylbenzoquinone as an oxidant, reacting in an organic solvent at a proper temperature under a nitrogen condition, thereby obtaining the 1, 1, 2-trifluoro-1, 4-diene compound. The alpha-fluoro alpha, beta-unsaturated amide derivative is obtained with good yield, and the structural formula of the derivative is shown in the specification. The synthesis method disclosed by the invention has the characteristics of simplicity and convenience in operation, mild conditions, greenness, economy, wide substrate compatibility, high chemical selectivity and high regioselectivity, and solves the technical problem that the synthesis conditions of the alpha-fluoro-alpha, beta-unsaturated amide derivative are complicated and harsh. Meanwhile, the alpha-fluoro drug molecules can be efficiently and highly selectively obtained, and the method has a wide application prospect.

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.

The application discloses a new method for synthesizing 3-acyl imidazo[1,5-a]pyridine compounds. The method comprises the following steps: adding 2-pyridyl-p-methanequinone (2-Py-p-QMs), terminal alkyne and p-toluenesulfonyl azide (TsN3), catalyst CuI, organic solvent and alkali into a reaction container under the condition of RT and O2 atmosphere, stirring the reaction for 4 hours, and then separating and purifying 3-acyl imidazo[1,5-a]pyridine compounds after the reaction is completed. The method expands the structure range of 3-acyl imidazo[1,5-a]pyridine products, and more compounds with rich structures can be obtained. Compared with the previous method for synthesizing the target product, the method is efficient, the reaction reagent is non-corrosive, the method design is novel, the raw material is cheap, the operation method is simple, and the product can be directly obtained under mild conditions.

The application discloses a tobacco endophytic fungus metabolite, a preparation method and application in tobacco alternaria alternata prevention and treatment, and relates to the technical field of microbial natural product pesticides. The tobacco endophytic fungus metabolite is a benzoquinone compound peniquinone L, and a structural formula is as follows: The benzoquinone compound peniquinone L is produced by fermentation of tobacco endophytic fungus Aspergillus aculeatus Aspergillus aculeatus Aa-1, and scale fermentation and preparation production are easy to carry out. The tobacco endophytic fungus metabolite benzoquinone compound peniquinone L of the application has inhibitory activity on various agricultural pathogens, and has significant bacteriostatic activity on tobacco alternaria alternata in particular, with an MIC value of 2 μg / mL, which is superior to positive drug carbendazim, and can be used as a leading compound or a new microbial natural product pesticide for tobacco alternaria alternata prevention and treatment.

The invention relates to a polyphenyl ether composite material as well as a preparation method and application thereof, and belongs to the technical field of compositions of high-molecular compounds. The flame-retardant polyphenyl ether composite material is prepared from the following components in parts by weight: 38 to 62 parts of polyphenyl ether resin, 18 to 37 parts of polystyrene resin, 8 to 22 parts of flame retardant and 1 to 8 parts of flexibilizer, the total mass concentration of 3, 3 ', 5, 5'-tetramethyl-4, 4 '-biphenyl quinone and 3, 3', 5, 5 '-tetramethyl biphenol in the polyphenyl ether resin is 8 ppm to 30 ppm, and the flexibilizer comprises an ethylene terpolymer and a hydrogenated styrene-butadiene-styrene block copolymer. The flame-retardant polyphenyl ether composite material has the advantages of high flame retardance, high melt flowability and good matte characteristic.

The invention discloses a novel GAA enzyme for improving the degradability of lignocellulose and application of the novel GAA enzyme, the GAA enzyme is derived from 1, 4-benzoquinone reductase of an AA6 family of ruminant rumen microorganisms, and the amino acid sequence of the GAA enzyme is shown as SEQ ID NO.1. Experiments prove that the enzyme has high catalytic activity and stability in a rumen environment (pH 6.0-6.8, 39 DEG C), can effectively improve the degradation rate of lignocellulose, and has wide application prospects in preparation of enzyme preparations, feed additives or microecologics for improving the utilization rate of lignocellulose in ruminant roughage.

This application relates to the field of capacitive deionization technology, and particularly to an electrode for capacitive deionization and its preparation method. The electrode for capacitive deionization comprises an electrode material, a carbon material, and a binder. The electrode material is DHPZ. The preparation method of DHPZ includes the following steps: S1, preliminary reaction: 2,5-dihydroxy-1,4-benzoquinone and 2,3-diaminophenazine are ground and mixed, heated in an inert gas atmosphere, cooled, filtered, washed, and vacuum dried to obtain a primary product; S2, acidification treatment of the primary product: The primary product is mixed with 2 mol / L nitric acid at a mass-to-volume ratio of 1:1, magnetically stirred for 5 hours, filtered, washed with deionized water, centrifuged multiple times, and vacuum dried at 60°C for 15 hours to obtain the DHPZ. This application provides an electrode for capacitive deionization and its preparation method to solve the problems of low desalination capacity, low adsorption capacity, and low removal efficiency in related capacitive deionization technologies.

The present invention relates to the formation of a compound of formula (I) by a ring closure reaction of a compound of formula (II) in the presence of a catalytic amount of base. It has been found that this reaction is very efficient, for example providing an efficient route to the synthesis of 3,4-dehydro-α-tocotrienol, α-tocotrienol and α-tocopherol, respectively.

The invention relates to the technical field of papermaking, in particular to a preparation method of ultrathin high-strength paper-based adhesive tape base paper. The preparation method comprises the following steps: mixing softwood pulp and hardwood pulp, forming base paper by adopting a double-net dehydration process, and forming a covalent cross-linked network in a paper sheet by adopting a cellulose reactive coupling agent with an o-benzoquinone structure and a multi-sulfydryl compound based on a sulfydryl-benzoquinone click chemistry and interface supramolecular assembly multi-bonding enhancement system; meanwhile, a dual intelligent enhancement system based on a biomacromolecule self-assembly body and a dynamic metal coordination network is established, and dynamic reversible crosslinking is constructed through a polyelectrolyte compound and a Fe < 3 + >-tannic acid coordination network; a multifunctional surface treatment technology combining a zwitterionic polymer brush and bionic in-situ mineralization is developed, a sulphobetaine methacrylate polymer brush grows through a surface-initiated atom transfer radical polymerization method, amorphous silicon dioxide is induced to be mineralized, and the adhesive tape body paper prepared through the method is high in strength.

The invention discloses an organic monocyclic macromolecular compound electrode material, a preparation method and application of the organic monocyclic macromolecular compound electrode material in a lithium ion battery. The organic monocyclic macromolecular compound electrode material is a monocyclic polybenzoquinone derivative which is obtained by carrying out dehydration condensation reaction on tetraaminobenzoquinone and disodium rose acid. The organic monocyclic macromolecular compound has a relatively large conjugated system and a relatively large aperture structure, is beneficial to full exposure of active sites and rapid transmission of ions, and remarkably inhibits the dissolution behavior of a material in an organic electrolyte, so that the cycling stability and the rate capability of a battery are remarkably improved. The molecular structure of the material contains a plurality of redox active sites (C = O and C = N), and can be reversibly coordinated with lithium ions to realize efficient lithium storage. The organic monocyclic molecular compound electrode material has high capacity, high stability and excellent rate capability, shows excellent electrochemical performance in a lithium ion battery system, and has high energy density and long service life.