27 results about "Tetraethylammonium" patented technology

The invention discloses a method for preparing battery-grade iron phosphate by utilizing phosphated residues. The method comprises the following steps: pre-treating the phosphated residues; alkaline leaching is conducted on the phosphated residues, wherein the phosphated residues are placed in a sodium hydroxide solution with the mass fraction being 30%; decoloring is performed; acid treatment: adding hydrochloric acid into the filtrate to adjust the pH value, adding a solution composed of urotropin, thiourea, tetraethylammonium oxalate, hydrogen peroxide and polydodecyl acrylamide acrylic acid, and stirring; extracting: adding an extracting agent and an organic solution, and extracting under a stirring condition; precipitating: heating the raffinate, adding hexadecyl trimethyl ammonium chloride, and stirring; then adding a ferric nitrate solution to carry out precipitation reaction; the method for preparing the battery material ferric phosphate product by taking phosphated residue solid wastes generated in the steel metal product process as raw materials through the steps of pretreatment, alkaline leaching, decoloration, acid treatment, extraction, precipitation reaction and the like has the advantages of simple process, high product quality, low production cost, high recovery efficiency of phosphorus resources in the waste residues and the like.

The invention belongs to the technical field of light-emitting hybrid materials, and particularly discloses a preparation method and application of an efficient blue light emitting hybrid material. The preparation method comprises the following steps: dispersing cuprous halide, triphenylphosphine (tpp) and tetraethylammonium halide in N, N-dimethylformamide (DMF) according to a molar ratio of 1: 1: 1 to form a uniform solution, and performing ultrasonic treatment at room temperature to generate luminescent powder; and washing, centrifuging and drying in vacuum to obtain the hybrid material. The highest photoluminescence quantum yield is up to 70%, and the luminescence mechanism is thermally activated delayed fluorescence. The material can be used for a white light LED (CIE coordinate (0.33, 0.33)) and an X-ray scintillator (the light yield is 32537 photons / MeV, and the spatial resolution is 20lpmm <-1 >), and has the characteristics of simple preparation and excellent performance.

The invention belongs to the technical field of photovoltaic cell processing materials, and relates to an RCA cleaning additive for a TOPCon cell POLY FINGER process and a preparation method of the RCA cleaning additive. The invention relates to an RCA cleaning additive for a TOPCon battery POLY FINGER process. The RCA cleaning additive comprises the following substances in parts by weight: 0.5-5 parts of a protective agent; 0.1 to 2.0 parts of a catalyst; 0.2 to 3.0 parts of a stabilizing agent; 0.3 to 2.5 parts of a selective adsorbent; 0.1 to 3.0 parts of a surfactant; 0.05 to 1.0 part of a defoaming agent; the protective agent is prepared from at least two of sodium 3-carboxybenzenesulfonate, tetraethyl ammonium acetate, methyl tributyl ammonium chloride, benzyl trimethyl ammonium chloride and bis (2-ethoxyl) dimethyl ammonium chloride. The selection range of the core component and the protective agent of the RCA cleaning additive is defined, and a multi-component synergistic effect system is constructed through reasonable matching. According to the present invention, the problems of single protection and non-uniform corrosion of the existing additive are effectively solved, the corrosion requirement of the laser region can be met, the POLY layer can be comprehensively protected, the foundation is laid for the subsequent battery passivation and the performance improvement, and the core cleaning requirement of the TOPCon battery POLY FINGER process can be met.

The invention discloses a process for industrially preparing nano aluminum oxide, which is characterized in that the calcination temperature of alpha-Al2O3 is reduced by adding high-purity aluminum oxide seed crystals, and the high-purity aluminum oxide seed crystals are obtained by using high-purity aluminum chloride and high-purity ammonium carbonate as raw materials and synergistically dispersing and calcining an ammonium salt dispersing agent and high-purity vitamin C; the ammonium salt dispersing agent is double-end tetraethylammonium fluoride polyethylene glycol, disperses the precursor through coordination of steric hindrance and charges, and provides fluorine ions during calcination to reduce the temperature required for completing alpha phase change; the obtained high-purity alumina seed crystal and nano alumina have the characteristics of high purity and small and uniform powder particle size.

The invention discloses a chemical comprehensive utilization treatment method for phosphated residues. The chemical comprehensive utilization treatment method comprises the following steps: pre-treating the phosphated residues; the method comprises the following steps: placing phosphated residues in a sodium hydroxide solution, and collecting filtrate and a precipitate A; adding hydrochloric acid into the filtrate, then adding urotropine, thiourea, tetraethylammonium oxalate and hydrogen peroxide acid, and collecting the filtrate and a precipitate B; decoloring is performed; performing extraction; performing precipitation; carrying out ball milling on the precipitate A and the precipitate B, adding a hydrochloric acid aqueous solution, and adding polydodecyl acrylamide acrylic acid to obtain a filtrate; adding a phosphoric acid aqueous solution into the filtrate; and adding aluminum hydroxide or aluminum oxide and an iron phosphate product, stirring, filtering, drying and ball-milling. Phosphated residue solid waste generated in the steel metal product process is used as a raw material, and iron phosphate is prepared through the steps of pretreatment, alkaline leaching, acid treatment, decoloration, extraction, precipitation reaction and the like, so that standard requirements are met. And treating the precipitate containing the zinc element to prepare the ternary phosphate anti-rust pigment.

The invention relates to tetraalkylammonium-tetra- or hexahydroxometallates such as tetraethylammonium hexahydroxoplatinate, (N(alkyl)4)y[M(OH)x], a method for the production thereof, and the use thereof for producing catalysts.

This invention belongs to the field of luminescent materials technology, specifically disclosing a metal halide luminescent material, its preparation method, and its application. It involves reacting cuprous halide and tetraethylammonium halide to synthesize crystals emitting blue, white, and yellow light, thus completing the (TEA)₂Cu₂X luminescent material. y The preparation of the crystal enabled tunable emission spectra within the visible light region, resulting in a single-component white light emission crystal (TEA)2Cu2Br2Cl2 with excellent color rendering index and ultra-wideband emission. This single-component white light crystal exhibits ultra-wideband emission characteristics, with a full width at half maximum (FWHM) of 300 nm and CIE coordinates of (0.32, 0.32), very close to the CIE coordinates of pure white light (0.33, 0.33). These characteristics make it an ideal choice for natural white LED applications, and when fabricated into white light emission devices, it achieves a color rendering index as high as 95. Furthermore, it contains no rare earth elements, making it an environmentally friendly material. Its preparation process is simple and low-cost, enabling large-scale industrial production.

The invention discloses a method for oxidative depolymerization of a beta-O-4 lignin model compound based on an electrochemical continuous flow reactor, the reactor comprises an anode plate, a cathode plate and a snakelike reaction channel located between the anode plate and the cathode plate, and the anode plate and the cathode plate are respectively connected with an anode and a cathode of a power supply; the method comprises the following steps: dissolving a beta-O-4 lignin model compound and tetraethylammonium perchlorate in a mixed solvent of acetonitrile and methanol to obtain a homogeneous solution, continuously introducing the homogeneous solution into a snakelike reaction channel of a reactor, and applying current to carry out an electrolytic reaction to prepare an aromatic compound; continuous depolymerization of the beta-O-4 lignin model compound can be achieved, products can be discharged in time, over-reaction can be relieved, enlargement is easy, meanwhile, due to the narrow gap and the large specific surface area of the reactor, the electrolyte concentration and the electrolytic tank pressure can be remarkably reduced, single-time conversion is achieved, the reaction rate is remarkably increased, the products are mainly benzaldehyde dimethyl acetal, and the cost is low. And the conversion rate and the yield are relatively high.

The application provides a supercapacitor electrolyte with low self-discharge, a preparation method and application thereof, raw materials of the supercapacitor electrolyte include organic solvents, ammonium salt and pyridine oxide; the organic solvents are one or more of acetonitrile, fluoroacetonitrile, propionitrile, butyronitrile and isobutyronitrile; the ammonium salt is tetraethylamine bistrifluoromethylsulfonylimide or tetraethylammonium bis(trifluoromethanesulfonyl)imide; and the pyridine oxide is pyridine-N-oxide, 4-methylpyridine oxide or 3-methylpyridine oxide. By selective use of specific additives and optimized configuration of electrolyte salt, the supercapacitor electrolyte of the application can effectively reduce the self-discharge rate of the supercapacitor and significantly improve the energy utilization efficiency of the capacitor.

The application discloses a method for pulse electrolysis of lignin, and the method comprises the following steps: performing pulse electrolysis reaction on a lignin dimer model compound in a three-electrode system acetonitrile medium system to obtain a small molecule aromatic monomer; the pulse electrolysis condition is that the pulse electrolysis is performed at a pulse potential of ±1.4V-±2.4V for 4-8h, the cycle is 5-20s, the duty cycle is 0.25-0.75, and the electrolyte is tetraethylammonium perchlorate. The pulse electrochemical method can electro-oxidize and depolymerize the C-O bond of the model compound at a lower potential, the problem of overoxidation at a high potential is relieved, and the product yield and product selectivity of the model compound are improved. The method has wide substrate applicability and can be effectively applied to the breaking of various C-O bonds.

The invention discloses a method for pulse electrolysis of lignin, which comprises the following steps: carrying out a three-electrode system pulse electrolysis reaction on a lignin dimer model compound in an acetonitrile medium system to obtain a micromolecular aromatic monomer; the conditions of pulse electrolysis are as follows: electrolysis is performed for 4-8 hours under the pulse potential of + / -1.4 V to + / -2.4 V, the period is 5-20 seconds, the duty ratio is 0.25-0.75, and the electrolyte is tetraethylammonium perchlorate. According to the pulse electrochemical method disclosed by the invention, the C-O bond of the model compound can be subjected to electrooxidation depolymerization at a relatively low potential, the problem of peroxidation occurring at a high potential is relieved, and the product yield and the product selectivity of the model compound are improved. The method disclosed by the invention has wide substrate applicability and can be effectively applied to fracture of various C-O bonds.

The present invention relates to tetraalkylammonium tetrahydroxymetallates or hexahydroxymetallates, such as tetraethylammonium hexahydroxyplatinate (N(alkyl)4)y[M(OH)x], a method for preparing the same, and the use thereof for preparing catalysts.

The invention discloses a chiral gold-copper nanocluster oligomer as well as a preparation method and application thereof. The preparation method comprises the following steps: enabling chiral six-membered ring oxazinyl thione to react with triethylamine and chlorogold in methanol by virtue of a ligand-induced self-assembly strategy, synthesizing a gold-cluster-based supramolecular polymer in situ by virtue of a one-pot method, and then coordinating the gold-cluster-based supramolecular polymer with copper tetraacetonitrile hexafluorophosphate to construct a chiral Au-Cu alloy nanocluster oligomer. The oligomer can trigger the generation of reactive oxygen species (ROS) through a glutathione responsive ligand exchange mechanism, and significantly destroys the redox steady state in bacterial cells. The broad-spectrum antibacterial efficiency on gram-positive bacteria and gram-negative bacteria reaches 100%. The chiral metal oligomer provides a new strategy for developing an anti-infection-healing promoting integrated medical material, and has application potential in the fields of chronic wound dressings and anti-biofilm instruments.

The application discloses a kind of phosphating slag chemical comprehensive utilization processing method, comprising the following steps: phosphating slag pretreatment;Phosphating slag is placed in sodium hydroxide solution, and filtrate and precipitate A are collected;Hydrochloric acid is added in filtrate, then urotropine, thiourea, ethanedioic acid tetraethylammonium, hydrogen peroxide acid are added, and filtrate and precipitate B are collected;Decolorization;Extraction;Precipitation;Precipitate A and precipitate B are ball milled after being added into hydrochloric acid aqueous solution, then polydodecyl acrylamide acrylic acid is added, to obtain filtrate;Phosphoric acid aqueous solution is further added in filtrate;Aluminum hydroxide or aluminum oxide and iron phosphate product are further added, stirred, filtered, dried, and ball milled.The phosphating slag solid waste generated in the process of steel metal product is used as raw material, iron phosphate is prepared through pretreatment, alkali leaching, acid treatment, decolorization, extraction and precipitation reaction, etc., to meet the standard requirements.The zinc-containing precipitate is further treated to prepare ternary phosphate anti-rust pigment.

The invention discloses a method for preparing lithium iron phosphate from phosphated residues. The method comprises the following steps: pre-treating the phosphated residues; alkaline leaching is conducted on the phosphated residues, wherein the phosphated residues are placed in a sodium hydroxide solution and filtered; decoloring is performed; adding a lithium source: adding the lithium source into the filtrate, then adding hydrochloric acid to adjust the pH value to 6-6.5, then adding a solution composed of urotropine, thiourea, tetraethylammonium oxalate, hydrogen peroxide and polydodecyl acrylamide acrylic acid, and stirring for a certain time; adding alkali to adjust the pH value to 8.5-9.5, and filtering, washing and drying the precipitate; and adding carbon and calcining: carrying out ball milling on the solid, uniformly mixing with graphene oxide particles, mixing with hydrazine hydrate, stirring, and calcining in an inert environment. The phosphated residues are fully utilized to prepare the lithium iron phosphate meeting battery requirements, so that the problem of phosphated residue discharge is effectively controlled, and the prepared lithium iron phosphate has good electrochemical performance as a battery positive electrode material.

The utility model discloses a tetraethylammonium fluoride reaction device and belongs to the technical field of chemical processing. The tetraethylammonium fluoride reaction device comprises a reaction tank body, a raw material conveying system, a temperature control system, a stirring assembly, a pressure monitoring system, a product collecting system and a control system, the reaction tank body is a cylindrical container, and welded flanges are arranged at the top and the bottom of the reaction tank body; the raw material conveying system comprises a magnetic feeding pump and a conveying pipeline, and the conveying pipeline is provided with a valve; the product collecting system is located at the bottom of the reaction tank body and comprises a product outlet pipeline, the product outlet pipeline is connected with the receiving container, a detachably connected filtering assembly is arranged on the product outlet pipeline, and the filtering assembly comprises a filtering plate and a plurality of polytetrafluoroethylene filtering columns installed on the filtering plate. By arranging the filtering assembly on the product outlet pipeline, solid particles or suspended solids in the product can be effectively removed, so that the purity and quality of the product are improved.

The invention relates to a calcium iodide-based organic electrolyte, a secondary battery and a preparation method of the calcium iodide-based organic electrolyte, the electrolyte is composed of calcium salt, an organic solvent and an additive, the calcium salt is calcium iodide or a combination of calcium iodide and other calcium salt, the organic solvent is one or a combination of more of ether organic solvent, sulfone organic solvent, ester organic solvent, amide organic solvent, ionic liquid organic solvent and amine organic solvent; the additive is selected from one or more of lithium borohydride, sodium borohydride, potassium borohydride, zinc borohydride, magnesium borohydride, lithium iodide, sodium iodide, magnesium iodide, potassium iodide, tetraethyl ammonium borohydride, tetramethyl ammonium borohydride, benzyltriethyl ammonium borohydride and tetra-n-butylammonium borohydride. Compared with the prior art, the fluoride-free, thermodynamically stable and low-passivation-effect calcium iodide-based electrolyte provided by the invention can improve the interface property of a calcium metal negative electrode-electrolyte and increase the stability of the electrolyte, so that the cycle life of a calcium metal battery is prolonged, and the stability of the calcium metal battery is improved.

The invention discloses an amino acid modified quaternary ammonium salt ionic liquid, a preparation method and a method for extracting m-methylphenol from coal tar, the ionic liquid is a tetraethylammonium arginine ionic liquid, green amino acid is used for replacing traditional halogen anions, the potential hazard of equipment corrosion caused by halogen elements is thoroughly eliminated, and meanwhile the yield of m-methylphenol is increased. Active sites capable of forming multiple interactions with hydroxyl groups of m-methylphenol are introduced, so that the affinity and the recognition selectivity on the m-methylphenol are remarkably enhanced. During extraction, the ionic liquid and the m-methylphenol model oil are mixed and stirred, and the m-methylphenol is transferred from an oil phase to an ionic liquid phase by the ionic liquid through hydrogen-bond interaction and an acid-base chemical reaction, so that separation and purification of the m-methylphenol are realized. The system investigates the influence of the solvent-oil ratio, the extraction time and the extraction temperature on the extraction efficiency, and determines the optimal extraction process: the solvent-oil ratio is 1: 1, the extraction time is 2 minutes, and the extraction temperature is 30 DEG C. Under the condition, the extraction efficiency of the m-methylphenol can reach 99.66% at most.

The invention relates to a lithium ion battery negative pole piece and a preparation method thereof. The pole piece takes an intermediate polymer base material as a core, the two sides of the intermediate polymer base material are coated with conducting layers with the thickness of 5-20 nm, the conducting layers are formed by blade coating, spin coating or dip coating of a specific conducting glue solution, and in the formula of the conducting glue solution, polyvinylpyrrolidone accounts for 10%-30%, carbon nanotubes account for 5%-10%, metal nanowires account for 1%-5%, ethyl alcohol accounts for 50%-80%, and tetraethylammonium tetrafluoroborate accounts for 1%-2%. In addition, a porous material layer is arranged on the outer side of the conducting layer. The preparation method of the negative pole piece comprises the following steps: pretreating the surface of an intermediate polymer substrate, preparing a conductive adhesive solution, coating two sides of the substrate with the conductive adhesive solution, and drying to form a conductive layer; and compounding the porous material layer with the base material with the conductive layer to prepare the integrated composite electrode plate. According to the novel current collector structure, traditional copper foil is replaced by the intermediate polymer base material, the weight is remarkably reduced, the energy density of the battery is improved, meanwhile, the specific conductive glue solution enables the microstructure of the conductive layer to be more uniform, the interface impedance is reduced, the lithium dendrite growth risk is reduced, and the safety of the battery is greatly improved.

The invention relates to research on an arylation amination reaction of aryl cyclopropane. An aryl cyclopropane compound is reacted with terephthalonitrile and pyrazole through electro-catalysis. The preparation method comprises the following steps: 1, adding aryl cyclopropane, terephthalonitrile, a pyrazole compound, cesium carbonate, tris (4-bromobenzene) amine and tetraethylammonium tetrafluoroborate into a three-mouth reaction bottle with magnetons; step 2, slowly adding ultrapure acetonitrile and graphite as positive and negative electrode materials in a nitrogen atmosphere, reacting at room temperature under the condition of constant current of 5mA, stirring and reacting at room temperature, monitoring the reaction through TLC (Thin Layer Chromatography), and stopping the reaction after the arylcyclopropane is completely reacted; and 3, transferring the mixture obtained in the step 2 into a reaction bottle, concentrating the solvent by using a rotary evaporator, and separating and purifying the obtained crude product by using a silica gel column to obtain a corresponding arylated aminated product. Compared with a traditional synthesis method, the method has the advantages that the reaction condition is mild, the reaction can be carried out under the room temperature condition, the yield and the chemical selectivity are good, indirect electrochemical oxidation is used in the reaction, the reaction is transferred from an electrode to a solution, and the coupling effect of anodic oxidation and cathode reduction is utilized at the same time.

The application discloses a synthesis method of a (Z)-1-aryl sulfide-2-phenol ether-4-aryl-trisubstituted-1-butene-3-alkyne compound, which comprises two-step room temperature reactions: firstly, in a dry reaction container, 1,3-di-alkynyl triiodide reagent (I), a phenol compound, a base reagent and an organic solvent are mixed, and stirring reaction is carried out at room temperature until the starting material is completely consumed, and the solvent is removed by concentration under reduced pressure; then, a sulfenol compound, a copper catalyst and an organic solvent are added into the concentrated residue, and stirring reaction is carried out at room temperature until completion, and the target product (II) is obtained through post-treatment. The molar ratio of the 1,3-di-alkynyl triiodide reagent (I), the phenol compound and the sulfenol compound is 1:1.05:(1.1-1.3); the copper catalyst is selected from one of cuprous iodide, cuprous chloride and tetraethylammonium copper tetrafluoroborate, and the copper catalyst is preferably tetraethylammonium copper tetrafluoroborate; and the organic solvent is selected from acetonitrile, 1,2-dichloroethane and the like, and the total amount of the organic solvent added is 0.1 mmol in terms of the amount of substance of the reagent shown in formula (I). The method has mild reaction conditions, simple operation and can efficiently prepare the target compound.

A method for manufacturing a zeolite catalyst with a silica coating, the method includes at least: mixing a zinc source and an MFI-type zeolite to obtain a zinc-doped zeolite; preparing a mixture liquid containing a structure-directing agent containing tetraethylammonium, a silica source, and water; and adding the mixture liquid to a surface of the zinc-doped zeolite to perform hydrothermal synthesis.

The application discloses a synthesis method of imidazo[1,2-a]pyridine compounds, which is synthesized by cyclization of a compound of formula III under electrochemical conditions and in the presence of a catalyst to obtain an imidazo[1,2-a]pyridine compound of formula IV. The electrochemical conditions include adding an electrolyte in a solvent, applying a current of 5-20 mA, a reaction temperature of 45-60 DEG C, and a reaction time of 2-8 hours; the solvent is selected from ethanol or isopropanol; and the electrolyte is selected from one or more of tetrabutylammonium tetrafluoroborate, tetrabutylammonium hexafluorophosphate, tetraethylammonium tetrafluoroborate and tetraethylammonium hexafluorophosphate.

One aspect of the present invention relates to a method for manufacturing a zeolite catalyst with a silica coating, the method includes at least: mixing a zinc source and an MFI-type zeolite to obtain a zinc-doped zeolite; preparing a mixture liquid containing a structure-directing agent containing tetraethylammonium, a silica source, and water; and adding the mixture liquid to a surface of the zinc-doped zeolite to perform hydrothermal synthesis.

The invention discloses a catalyst for preparing propylene carbonate as well as a preparation method and application of the catalyst. The catalyst comprises a component I and quaternary ammonium salt; the component I is a reaction product of alkyl glycol, halide salt and glycerol triglycidyl ether; the quaternary ammonium salt comprises at least one of tetramethyl ammonium halide, tetraethyl ammonium halide, tetrapropyl ammonium halide and tetrabutyl ammonium halide; the weight ratio of the component I to the quaternary ammonium salt is 1: (0.5-10). The catalyst has the advantages of low cost, high activity, high selectivity and good stability when being applied to a reaction for preparing propylene carbonate.

The invention provides a low-self-discharge supercapacitor electrolyte and a preparation method and application thereof. The supercapacitor electrolyte is prepared from the following raw materials: an organic solvent, ammonium salt and pyridine oxide, the organic solvent is one or more of acetonitrile, fluoroacetonitrile, propionitrile, butyronitrile and isobutyronitrile; the ammonium salt is tetraethyl amine bis (fluorosulfonyl) imide salt or tetraethyl ammonium bis (trifluoromethane sulfonyl) imide salt; the pyridine oxide is a pyridine-N-oxide, a 4-methylpyridine oxide or a 3-methylpyridine oxide. Through selective use of the specific additive and optimal configuration of the electrolyte salt, the super capacitor electrolyte can effectively reduce the self-discharge rate of a super capacitor and significantly improve the energy utilization efficiency of the capacitor.

The present application relates to a kind of aryl cyclopropane aryl amination reaction research, by electrocatalysis aryl cyclopropane compound and p-phenylenedinitrile and pyrazole reaction.Step one: aryl cyclopropane, p-phenylenedinitrile, pyrazole compound, cesium carbonate, tri (4-bromophenyl) amine and tetraethylammonium tetrafluoroborate are added in the three-port reaction bottle with magnet;Step two, under nitrogen atmosphere, slowly add ultrapure acetonitrile, graphite is used as positive and negative electrode material, reaction is carried out under the condition of room temperature and constant current 5mA, stirring reaction is carried out at room temperature, and the reaction is monitored by TLC, after aryl cyclopropane completely reacts, stop the reaction;Step three, the mixture obtained in step two is transferred to the reaction bottle, the solvent is concentrated using rotary evaporator, the obtained crude product is separated and purified using silica gel column, and the corresponding aryl amination product is obtained.Relative to traditional synthesis method, the method has mild reaction condition, can occur reaction at room temperature and has good yield and chemical selectivity, and the reaction uses indirect electrochemical oxidation, transfers the reaction from electrode to solution, and simultaneously utilizes the coupling effect of anodic oxidation and cathodic reduction.