776 results about "Green chemistry" patented technology

The invention relates to a method for preparing lithium sulfide, which comprises the following steps: respectively dissolving a sulfur source compound and a lithium source compound in alcohol under the protection of inert atmosphere, and then mixing the two alcohol solutions for double decomposition reaction to generate a lithium sulfide suspension; and then carrying out evaporative crystallization, supercritical fluid washing, centrifugal separation and freeze drying treatment to obtain a lithium sulfide product. The purity of the lithium sulfide prepared through the method can reach 99.9% or above, the lithium sulfide can be used as a positive electrode material of a lithium-sulfur battery or a raw material of a sulfide solid electrolyte in an all-solid-state battery, and the method is low in energy consumption, conforms to the concept of green chemistry and is suitable for large-scale industrial production.

The invention provides a method and system for detecting the content of platinum, palladium and rhodium in an automobile exhaust purification catalyst and application, and relates to the technical field of automobile exhaust purification, the method comprises the following steps: crushing, grinding, sieving, performing microwave acidolysis, neutralizing, washing and drying a catalyst sample to obtain dry filter residues; a trapping agent and a fluxing agent are added into the dry filter residues, constant-temperature heating is conducted in inert gas, then cooling forming is conducted, and an alloy button is obtained; blowing ash on the alloy, then adding mixed acid into the alloy, heating the alloy in a water bath at 95 DEG C for 25-35 minutes to obtain a dissolved solution, then adding a masking agent into the dissolved solution, and oscillating to obtain a solution to be detected; and filtering the liquid to be detected, fixing the volume and detecting. According to the method, precise quantification of trace platinum, palladium and rhodium in the complex matrix catalyst can be realized, and the method has a relatively high recovery rate; meanwhile, pollution elements are prevented from being used, and the method is green and efficient and better conforms to the concept of green chemistry.

The invention provides a preparation method of 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride, which comprises the following steps: salifying 4-fluoro-3, 5-dimethylaniline serving as a substrate with concentrated hydrochloric acid, reacting with sodium nitrite to prepare a diazo solution, reducing the diazo solution into corresponding phenylhydrazine by using alkaline sodium sulfite as a reducing agent system, and reacting the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride with the diazo solution to prepare the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride. And acidizing the 2, 5-dimethyl phenylhydrazine to obtain corresponding phenylhydrazine hydrochloride. According to the preparation method, sodium sulfite which is low in cost and easy to obtain is used as a reducing agent, the defects that metal residues are high, the environment is prone to being polluted and the raw material cost is high due to the fact that a metal reducing agent is adopted when phenylhydrazine hydrochloride is prepared in the prior art are overcome, the reaction is completed in a water phase, no organic solvent is adopted, and the concept of green chemistry is met; and the problems of complicated post-treatment and easy pollution caused by the adoption of an organic solvent can be effectively avoided.

The invention discloses preparation and application of an environment-friendly P, N and Si synergistic flame retardant. According to the flame retardant (KDOPO-LDH (at) GO), a plurality of flame-retardant elements such as P, N and Si are integrated, so that an efficient synergistic flame-retardant system is constructed. Wherein the existence of the N element and the Si element effectively promotes the uniform dispersion of the flame retardant in an epoxy resin matrix; meanwhile, the unique molecular structure of the P-containing component endows the carbon-forming agent with excellent carbon-forming performance under a high-temperature condition. Through the synergistic effect of multiple elements, the flame retardant property of the epoxy resin is remarkably improved, and meanwhile, the good mechanical property of the material is effectively maintained. In addition, halogen-free and low-toxicity substances are mainly generated in the pyrolysis process of the flame retardant, and the green chemical concept is met.

The invention provides an airflow drying and surface modification technology for lemon fibers, relates to the technical field of lemon surface processing, and realizes the whole process optimization of lemon fiber production through ultrasonic-microwave synergistic extraction, pulse type ultrasonic-hot air coupling airflow drying, low-temperature plasma surface modification and an intelligent control system based on Q-learning. The pectin yield is increased by about 20% through ultrasonic-microwave synergistic extraction, the extraction time is shortened by 50%, flow drying is assisted by double-frequency ultrasonic waves and magnetized water mist, the drying time is shortened by 50%, the energy consumption is reduced by 20%, the fiber softness is improved by 15%, the fiber is endowed with 99% antibacterial rate and excellent hydrophilicity through low-temperature plasma modification, chemical reagents are not needed, and environmental pollution is reduced. The intelligent control system converts waste liquid into ethanol and lactic acid through real-time data optimization and closed-loop resource utilization, zero waste discharge is achieved, the ethanol yield is increased by 12%, the additional value of lemon peel byproducts is remarkably increased, and the method is suitable for the fields of food and materials and conforms to the green chemistry concept.

The invention discloses a preparation method for synthesizing coal-based carbon quantum dots through microbial catalysis, which comprises the following specific preparation steps: (1) pretreating coal, specifically comprising crushing and sterilizing treatment; (2) combining the pretreated coal sample with selected microorganisms or biological factors, and carrying out fermentation treatment on the coal; (3) after fermentation is completed, dialyzing the coal fermentation liquid to prepare a carbon quantum dot solution; (4) separating and purifying the dialyzed carbon quantum dot solution to remove impurities; and (5) carrying out quick freeze-drying on the separated and purified carbon quantum dot solution to obtain the carbon quantum dots with fluorescent properties. According to the method, microorganisms serve as a core, an aerobic or anaerobic fermentation process is combined, coal resources are fully utilized, and efficient preparation of the coal-based carbon quantum dots is achieved. The method not only has good environmental protection property, but also can provide a new technology for industrial production of the carbon quantum dots, and has important significance for efficient conversion and green chemical synthesis of coal.

The present invention provides a cyclic carbonate synthesis method, and belongs to the technical field of organic ester compound synthesis, and the cyclic carbonate synthesis method comprises the following steps: S1, 1, 3-propylene glycol, a dehydrating agent and a catalyst are added into a high pressure reaction kettle, and CO2 is introduced into the high pressure reaction kettle for a reaction; s2, after the reaction is finished, after the high-pressure reaction kettle is cooled to the room temperature, redundant gas in the high-pressure reaction kettle is discharged, after the gas in the high-pressure reaction kettle is completely discharged, the high-pressure reaction kettle is opened, the catalyst is filtered out, and the solution is subjected to vacuum-pumping separation to obtain a target product; the catalyst is a heterogeneous catalyst MxOy (at) Zn-dpot. Carbon dioxide conversion is carried out in a chemical utilization mode, a chemical product trimethylene carbonate can be produced, the synthesis route is easy to operate, and after the MxOy at Zn-dpot catalyst is added, the yield is high, the high additional value is achieved, and the green chemistry concept is met.

The invention discloses a surface modification method for an ultra-high nickel ternary positive electrode material of a lithium ion battery by ALD (atomic layer deposition), which specifically comprises the following steps: uniformly dispersing the ultra-high nickel ternary positive electrode material in a metal tray, and feeding the metal tray loaded with the ultra-high nickel ternary positive electrode material into ALD atomic deposition equipment; atomic layer vapor deposition with a set process and a set cycle index is carried out, and a deposited product is placed in a tubular furnace to be heated and then subjected to heat preservation. According to the method, surface modification of the ultrahigh-nickel ternary positive electrode material is completed in a vacuum and protective atmosphere environment, so that side reaction between the high-activity surface of the material and an environmental medium is avoided, and the requirement of green chemistry is met; meanwhile, controllable and uniform deposition of a micro-nano-scale coating layer is realized; and in combination with a heat treatment process, HfO2 coating of the ultrahigh nickel ternary positive electrode material is completed.

The invention provides an alkene reductase mutant and an application of the alkene reductase mutant in synthesis of (R)-2-dimethyl methylsuccinate. According to the method, the olefin reductase is subjected to directed evolution to obtain the olefin reductase mutant with improved enzyme activity and substrate tolerance, the obtained mutant can be used for efficiently reducing dimethyl itaconate to prepare the high-optical-purity (R)-2-dimethyl methylsuccinate, and the reaction substrate concentration, the reaction yield and the optical purity of the product are high; the reaction process is simple to operate and low in energy consumption, and meets green chemical requirements. Therefore, the method disclosed by the invention can be applied to the biotransformation of the industrial production of the (R)-2-methyl dimethyl succinate.

The invention discloses a surface defect and oxygen doping co-modified pore-rich g-C3N4 nano material as well as preparation and application thereof. The preparation method comprises the following steps: mixing a white viscous melamine-cyanuric acid suspension with an oxalic acid solution to obtain a melamine-cyanuric acid-oxalic acid suspension solution, carrying out hydrothermal treatment to obtain a hydrogen bond connected self-assembled supramolecular aggregate, and finally carrying out thermal polycondensation on the self-assembled supramolecular aggregate and formaldehyde to obtain the surface defect and oxygen doping co-modified porous g-C3N4. The surface defect and oxygen doping co-modified g-C3N4 nano material with different morphologies and physicochemical properties is obtained. The preparation method is simple in process flow, efficient, low in cost and suitable for large-scale production, and the synthesis process meets the green chemical requirement; the obtained nano material has a higher specific surface area and more active sites, and has higher catalytic reaction and adsorption performance on organic pollutants, namely levofloxacin, ciprofloxacin and tetracycline hydrochloride, in a water body.

The invention relates to the technical field of isotope separation, and particularly discloses a functionalized ionic liquid as well as a preparation method and application thereof in separation of boron isotopes. The ionic liquid prepared from halogenated ether, a nitrogen-containing compound and fluorine-containing inorganic salt is used as a complexing agent for boron isotope separation. The ionic liquid has good chemical stability and thermal stability and can be kept stable in the long-time separation process of boron isotopes; the ionic liquid has unique selectivity, has different affinity and complexing stability to 10B and 11B, and is convenient to realize accurate separation of 10B and 11B; the boron isotope separation agent also has excellent solubility and flowability, can fully contact and react with boron isotopes, improves the separation efficiency, reduces equipment blockage and energy consumption, and provides convenient conditions for large-scale industrial boron isotope separation; in addition, the ionic liquid has better environmental friendliness, better meets the development requirements of green chemistry, and has huge application potential in the field of boron isotope separation.

The invention relates to a pyrazinyl covalent organic framework material as well as a preparation method and application thereof, 2, 5-dimethylpyrazine and aromatic aldehyde monomers are taken as construction elements, and the pyrazinyl covalent organic framework material connected with two olefins is synthesized through a Knoevenagel reaction. The pyrazinyl covalent organic framework material disclosed by the invention has good chemical stability and full-conjugate skeleton characteristics, shows excellent photocatalytic activity and cycling stability in visible light driven thioether oxidation reaction, and has potential application value in the fields of environmental restoration and green chemistry.

The invention discloses a precise construction strategy of a dibenzothiophene sulfuryl covalent organic framework material and systematically explains efficient application of the dibenzothiophene sulfuryl covalent organic framework material in photocatalytic synthesis of thiadiazole and derivatives thereof. The achievement relates to a plurality of leading subjects such as catalytic chemistry, organic synthesis, material science, environmental engineering and green chemistry. According to the method, 2, 4, 6-triformyl phloroglucinol and 3, 7-diaminodibenzo [b, d] thiophene-5, 5-dioxide are taken as construction units, and the crystalline S-COF rich in sulfuryl active sites can be quantitatively obtained through topology-oriented Schiff base condensation under the conditions of protonic acid catalysis, no water and no oxygen. Under the radiation condition of visible blue light, S-COF is used as a heterogeneous photocatalyst to drive green synthesis of 3, 5-di-p-tolyl-1, 2, 4-thiadiazole and series of derivatives thereof; the invention provides a new catalyst design normal form for light-induced organic conversion, and lays a solid foundation for sustainable development-oriented efficient synthesis chemistry.

The invention discloses a preparation method and application of a wood nanocellulose ternary composite preservative film, and belongs to the technical field of biomass nanocellulose functional materials. Lignin and nanocellulose components are separated from peanut shells by using a ternary eutectic solvent, the novel green wood nanocellulose ternary composite fresh-keeping liquid is prepared by blending chitosan natural macromolecules, a wood nanocellulose ternary composite film can be formed on the surfaces of fruits and vegetables, and a good fresh-keeping effect is achieved. Meanwhile, the preparation method provided by the invention is simple, and the prepared film has excellent mechanical properties and stability, and can effectively delay ripening, aging and water loss of fruits, so that the luster and freshness of the fruits are maintained, the storage capacity of fresh fruits and vegetables is improved, and the film has a wide application prospect. In addition, the used deep eutectic solvent is very environment-friendly, meets the standard of green chemical production, and has good practical application value.

The invention provides a synthesis method of tilpotide, which comprises the following steps: dividing a target peptide chain into six fragments, and adopting bis (4-C18-C28 alkoxy phenyl) methylamine, 2, 4-bis (18-C28 alkoxy)-benzyl alcohol and NH2-Asp (OTAG)-OR1 as hydrophobic label carriers to assist synthesis. A side chain carboxyl group of aspartic acid is innovatively used as an anchoring position of a hydrophobic label, a new fragment connection route is designed, a full-protection tilpotide conjugate is synthesized through a multi-label synergistic effect, and finally a protecting group and a label are removed by using a TFA lysate. Compared with a solid-phase synthesis method, the method is carried out in a homogeneous reaction, the dosage of amino acid and the condensing agent is reduced to 1-1.2 times from 2-3 times, and the cost is remarkably reduced. Compared with an existing hydrophobic labeling method, the method has the advantages that multiple labels can be introduced to serve as protecting groups, the yield and purity of synthesis of medium-chain and long-chain polypeptides are improved, meanwhile, the problem of hydrophobicity attenuation caused by peptide chain extension is solved, and the green chemical process requirement is met.

The present invention relates to the technical field of polymer preparation. Disclosed are a covalent organic framework material, and a preparation method therefor and a use thereof. The preparation method for the covalent organic framework material comprises the following step: subjecting an organic aldehyde and an organic amine to a condensation reaction in a deep eutectic solvent to obtain the covalent organic framework material, wherein the deep eutectic solvent is a two-component eutectic liquid composed of menthol and acetic acid. The temperature for the reaction is 25-120ºC, and the time for the reaction is 1-72 hours. The deep eutectic solvent composed of menthol and acetic acid used in the present invention has good dissolution properties for organic matters, and can also efficiently catalyze the condensation reaction between the organic amine and the organic aldehyde. The prepared covalent organic framework material exhibits high crystallinity and has good applications in the fields of adsorptive separation, heterogeneous catalysis, energy storage, etc. The present method has mild reaction conditions, simple operation, and good universality, is conducive to industrial large-scale production, and conforms to the concept of green chemistry.

The invention discloses a method for preparing nano copper powder based on a microwave-assisted reduction method and application. The method comprises the following steps: a) preparing a copper ion solution; b) adding a dispersing agent and a surfactant; c) adding a reducing agent; d) microwave heating reaction; e) separating and purifying a product; and f) drying. According to the method, directional reduction and morphology regulation and control of copper ions are achieved through the synergistic effect of a microwave field and chemical reduction, the specific surface area of the obtained product reaches 25-35 m < 2 > / g, the oxygen content is lower than 0.8 wt%, and excellent performance is shown in the fields of electronic packaging and conductive ink; the method has the characteristics of short reaction time (shortened by 90% compared with the traditional method), low energy consumption (less than 0.5 kWh / kg), no harmful by-product and the like, and meets the requirements of green chemical industrial production.

The invention provides a preparation method and application of a matcha-based carbon quantum dot green corrosion inhibitor. The novel environment-friendly carbon quantum dot is successfully synthesized by taking matcha powder and polyethyleneimine as precursors and adopting a hydrothermal method, and low-dose and high-effect carbon steel anti-corrosion protection can be remarkably realized by introducing a nitrogen-containing functional group (such as amino) on the surface of a matcha molecule containing hydroxyl and carboxyl. The matcha-based carbon quantum dot is used for a carbon steel corrosion inhibitor, self-corrosion of carbon steel in an acid medium can be inhibited, the corrosion resistance is improved, the higher requirement of the green chemistry concept on corrosion inhibitor development is met, and the problem that an existing carbon quantum dot corrosion inhibitor is not ideal in corrosion inhibition performance is solved.

The invention relates to the technical field of preparation of compounds, in particular to a sulfenamide compound and a preparation method thereof. Compared with the prior art, a mild electrochemical method is adopted for preparing the sulfenamide compound forming the N-S bond, in the reaction process, halide salt serving as electrolyte is subjected to oxidation reaction at an anode to obtain free radicals, and after decarburization of an amine compound is promoted by the free radicals and alkali together, the free radicals react with disulfide or mercaptan to form the sulfenamide compound forming the N-S bond; the method disclosed by the invention has the advantages of good substrate compatibility and functional group tolerance, no need of additional addition of an oxidizing agent and a transition metal catalyst, simple reaction post-treatment operation and the like, is convenient to operate, high in atom utilization rate and mild in reaction condition, meets related requirements of green chemistry, and has a good development prospect.

The invention provides a two-dimensional layered kaolinite nanofiltration membrane, and a preparation method and application thereof, and the preparation method comprises the following steps: mixing kaolinite powder and an intercalator according to a first solid-to-liquid ratio, heating, stirring, carrying out intercalation reaction completely, and carrying out solid-liquid separation to obtain a solid kaolinite intercalation compound; mixing the kaolinite intercalation compound with water according to a second solid-to-liquid ratio, adjusting the pH value of the mixed solution to 9-13, and carrying out dispersion treatment to obtain a kaolinite nanosheet dispersion liquid; enabling the kaolinite nanosheet dispersion liquid to penetrate through the porous basement membrane, and depositing kaolinite nanosheets in the kaolinite nanosheet dispersion liquid on the porous basement membrane to obtain the two-dimensional layered kaolinite nanofiltration membrane; the operation steps are simple, no complex equipment or a large amount of organic solvent is used, and the method conforms to the concept of green chemistry. The prepared two-dimensional layered kaolinite nanofiltration membrane can be used in various fields of water treatment, organic solvent separation and the like, and has a wide application prospect.

The invention relates to the technical field of 1-methylimidazole and synthesis thereof, in particular to 1-methylimidazole based on an ionic liquid catalytic system and an efficient synthesis process of the 1-methylimidazole, glyoxal, methylamine and formaldehyde are used as raw materials, and the ionic liquid catalytic system is prepared by compounding sulfonic acid group and carboxyl functionalized ionic liquid according to the ratio of 2: 1. The cocatalyst is formed by compounding transition metal salt and organic alkali according to the ratio of 1: 2, the molar ratio of the raw materials is 1: 2: 2, and the sulfonyl ionic liquid is subjected to microwave activation, carboxyl ionic liquid loading, transition metal salt ultrasonic pretreatment and organic alkali rectification purification to synergistically promote the reaction, so that efficient synthesis of 1-methylimidazole is realized, and the yield and purity of the product are improved. According to the process, a specially treated ionic liquid catalytic system and a cocatalyst are adopted, operations such as pulse stirring and multiple extraction are combined, efficient synthesis of 1-methylimidazole is achieved, the product purity exceeds 99%, the yield exceeds 90%, the cost is reduced, pollution is reduced, the green chemistry concept is met, and the application prospect is wide.

The invention relates to a method for producing renewable fuel, in particular to a method for synthesizing hydrocarbon fuel by catalyzing sulfur-containing biomass derivatives through three metals. The invention discloses a process for converting oxygen-containing compounds derived from sulfur-containing and nitrogen-containing biomass into hydrocarbons through a catalytic technology, and relates to the field of green chemistry and biofuel production. The preparation method comprises the following steps: S1, pretreating raw materials; s2, filling a catalyst; s3, hydrogenation catalytic reaction; s4, sampling and detecting; and S5, separating and purifying a product. The combination of the three metals has a synergistic effect, can bring about optimization of an electronic effect and a geometric effect, can provide higher catalytic activity and selectivity in hydrogenation reaction, and compared with a traditional single-metal or double-metal catalyst, the three-metal catalyst can realize the same or even higher reaction rate and yield at lower temperature and pressure, and can be used for preparing the catalyst. The reaction energy consumption and the equipment requirement are reduced, and the economic benefit and the process feasibility are improved.

The invention belongs to the technical field of insecticides, and particularly relates to a synthetic method of a hexythiazox intermediate, which comprises the following four steps: S1, preparing erythro-1-p-chlorophenyl-2-amino-1-bromo-propane; s2, preparation of the erythro-1-p-chlorophenyl-2-aminopropanethiol, and preparation of the erythro-1-p-chlorophenyl-2-aminopropanethiol; s3, preparation of the trans-1-p-chlorophenyl-2-amino-propyl-O-isopropyl thiocarbonate hydrochloride, and preparation of the trans-1-p-chlorophenyl-2-amino-propyl-O-isopropyl thiocarbonate hydrochloride; and S4, preparation of a hexythiazox intermediate, namely, trans-5-(4-chlorphenyl)-4-methyl thiazolidone. According to the invention, the use of highly toxic carbon disulfide, corrosive chlorosulfonic acid, carcinogenic benzyl chloride and other high-risk reagents is completely abandoned, the operation risk is reduced, no malodorous gas is discharged, the occupational health and safety of operators and the environment are fundamentally guaranteed, meanwhile, the generation of acidic wastewater and sulfur-containing hazardous waste is solved, and the production cost is reduced. And a green chemical atom economy principle is met.

The invention belongs to the technical field of green chemistry and sustainable chemical engineering, and discloses a method for recovering an acidic eutectic solvent by combining anti-solvent precipitation with activated carbon adsorption. Water-insoluble high-molecular-weight lignin in the deep eutectic solvent black liquor is removed by an anti-solvent precipitation technology, and then residual low-molecular-weight water-soluble lignin and polysaccharide in the solution are further adsorbed and removed by using activated carbon with high specific surface area and rich pore structure; and the eutectic solvent with high purity and unobviously changed structure is recovered. The method is suitable for various acidic deep-eutectic solvents, the operation is simple, water and activated carbon in the recovery process can be repeatedly used, and the obtained water-insoluble lignin, water-soluble lignin and polysaccharide have high application value.

The invention belongs to the technical field of ascorbic acid derivative preparation, and particularly relates to a process method for synthesizing AA-2G through sucrose phosphorylase whole-cell catalysis. The sucrose phosphorylase derived from bifidobacterium longum is subjected to site-directed mutagenesis, so that the enzyme activity of the sucrose phosphorylase is effectively improved, and 2-O-D-glucopyranosyl-L-ascorbic acid is synthesized through whole-cell catalysis, so that high-yield AA-2G is obtained. In addition, due to the use of the modified LB culture medium and the treating agent, the yield of the AA-2G is well increased, and a certain basis is provided for industrial production of the AA-2G. In addition, the AA-2G is synthesized by adopting a biological catalysis method, the reaction condition is mild, toxic and harmful chemical reagents are not used, the pollution to the environment is reduced, and the development concept of green chemistry is met.

The invention relates to the technical field of biochemistry, in particular to an enzyme mutant and application thereof in preparation of conopeptide. According to the preparation method, a strategy of combining green chemistry and an enzyme method is adopted, seven tripeptide fragments are taken as raw materials, a conopeptide main chain is prepared through a liquid-phase synthesis method, and then enzymatic precise modification and synthesis are realized by utilizing a multiple directed evolution enzyme concerted catalysis system. Based on the efficient connection characteristic of a liquid-phase synthesis system and the high substrate specificity of an enzymatic system, the complex protection group operation in traditional solid-phase synthesis is effectively avoided, generation of by-products is remarkably reduced, meanwhile, fixed-point modification and precise assembly of a conopeptide main chain are achieved, and the application prospect is wide. And an efficient and green new path is provided for the continuous production of the cosmetic-grade high-purity conopeptide.

The invention provides a tetrahydropyrrole continuous flow process preparation method, which comprises: S101, taking a porous Co3O4-based composite catalyst and a CuAl metal oxide catalyst, mixing, placing in a continuous flow reactor, and adjusting the reaction temperature to 300-350 DEG C and the pressure to 0.5-1.5 Mpa; and S102, continuously introducing tetrahydrofuran and ammonia gas into the continuous flow reactor, carrying out a continuous catalytic reaction, condensing, and collecting a reaction product in a gas-liquid separator to obtain tetrahydropyrrole. According to the method, two catalysts are prepared and jointly put into the continuous flow reactor into which ammonia gas and tetrahydrofuran are introduced to realize continuous production of tetrahydropyrrole, the method has the advantages of efficient mass and heat transfer, avoidance of generation of hot spots, shortening of reaction time, reduction of energy consumption and the like, meanwhile, the use of organic solvents can be reduced, and the method has green chemical guidance quality.

The invention discloses a waste lithium iron phosphate battery resource utilization method, and relates to the technical field of waste lithium battery resource treatment, and the waste lithium iron phosphate battery resource utilization method comprises the following steps: disassembling and crushing waste lithium iron phosphate batteries, carrying out heat treatment, leaching the heat-treated waste lithium iron phosphate battery particles, and extracting metal elements, specific microorganisms are inoculated to accelerate extraction of metal elements, metal ions in the leachate are extracted through a supercritical carbon dioxide extraction technology, the metal ions are purified into metal resources through precipitation, filtration and electrolysis, and through optimization of all links and application of an innovative technology, the metal resources are obtained. The resource utilization efficiency of the waste lithium iron phosphate batteries is improved to the maximum extent, the environmental pollution is reduced, the waste treatment cost is reduced, efficient recovery and environment-friendly treatment of metal resources are ensured, and the method not only has remarkable environmental benefits, but also has good economic benefits, and meets the requirements of green chemistry and sustainable development.

The invention discloses a chiral alpha-hydroxyamide derivative as well as a synthesis method and application thereof. The synthesis method comprises the following steps: in the presence of a chiral thiourea catalyst, aromatic amine and alpha-carbonyl acyl silane are subjected to a catalytic asymmetric nucleophilic addition reaction in a solvent under illumination, and the chiral alpha-hydroxyamide derivative is generated. The reaction takes illumination as driving force, so that green synthesis is realized; and secondly, due to the introduction of the chiral thiourea catalyst, the enantioselectivity is remarkably improved, the use of a metal catalyst is avoided, and the concept of green chemistry is met. In addition, the reaction substrates alpha-carbonyl acyl silane and aromatic amine are cheap and easily available chemicals, so that the synthesis cost is reduced, and the feasibility and practicability of the method are improved.

The invention discloses a method for preparing p-benzoquinone through selective electrocatalytic oxidation of phenol by using a carbon cloth loaded ferronickel catalyst, the method adopts the carbon cloth loaded ferronickel catalyst as an anode to realize efficient conversion of phenol in an aqueous solution into p-benzoquinone, and the product is only p-benzoquinone. The method has the advantages of simple operation process, mild reaction conditions, high catalytic activity, high chemical selectivity and high target compound yield. The p-benzoquinone is prepared by oxidizing phenol in an alkaline environment, so that the use of toxic and harmful chemical oxidants is avoided, the pollutant emission is reduced from the source, and the method is an environment-friendly synthesis process and conforms to the development concept of green chemistry.