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49 results about "Tetraethylammonium chloride" patented technology
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Tetraethylammonium chloride (TEAC) is a quaternary ammonium compound with the chemical formula C₈H₂₀N⁺Cl⁻, sometimes written as Et₄N⁺Cl⁻. In appearance, it is a hygroscopic, colorless, crystalline solid. It has been used as the source of tetraethylammonium ions in pharmacological and physiological studies, but is also used in organic chemical synthesis.
Water-permeable paving material and preparation method and application thereof
The invention discloses a water-permeable paving material and a preparation method and application thereof. The water-permeable paving material comprises, by weight, 60-90 parts of quartz sand, 10-40 parts of Portland cement, 2-10 parts of hydrophilic epoxy resin binders, 0.5-5 parts of curing agents and 1-10 parts of water. The curing agents include one or more of aliphatic polyamine and cycloaliphatic polyamine curing agents or aromatic ring polyamine curing agents. The hydrophilic epoxy resin binders comprise, by weight, 500-950 parts of bisphenol A epoxy resin, 1-200 parts of surfactant span, 1-200 parts of surfactant tween and 0.001-0.005 part of catalysts, wherein the catalysts can be tetraethylammonium chloride, butyl triphenyl phosphorus bromide, benzyl triethyl ammonium bromide, benzyl triethyl ammonium chloride, 2- methylimidazole or optional combination of the above substances. The water-permeable paving material is prepared by uniformly stirring the quartz sand, the Portland cement, the water, the hydrophilic epoxy resin binders and the curing agents; and then placing the stirred mixture into a mould for molding and curing for 24 hours at the normal temperature prior to demolding. The water-permeable paving material is used for preparing pavement bricks, pavement slabs and sewage filtering prefabricated members by means of molding.
Owner:杭锦旗亿嘉环境治理有限公司
Bituminous paint
InactiveCN103122215AImprove heat resistanceStrong adhesionAnti-corrosive paintsBituminous coatingsNitrobenzeneM-nitrophenol
The invention discloses a bituminous paint which comprises the following raw materials in parts by mass: 1-3 parts of potassium chloride, 2-4 parts of metanitrophenol, 1-2 parts of anthraquinone, 2-5 parts of sodium dodecyl benzene sulfonate, 2-6 parts of tetraethylammonium chloride, 2-5 parts of hexadecyltributylphosphorus tribromide, 1-3 parts of 4-bromo-1-butanol, 3-5 parts of diethylaminoethanol hexanoate and 2-5 parts of praseodymium trifluoroacetylacetone. The bituminous paint disclosed by the invention has the advantages of favorable heat resistance, favorable adhesive force, favorable weather resistance, short drying time and obvious anticorrosion effect, and is convenient, safe and environment-friendly to use in construction.
Owner:桑达化工(南通)有限公司
Method for preparing bio-based plastic through esterification modification of wood fiber
The invention discloses a method for preparing bio-based plastic through esterification modification of wood fiber. The method comprises the following steps: drying and crushing wood fiber biomass; pretreating the powder by ball-milling; swelling and dissolving in a DMSO(Dimethylsulfoxide) / TEAC(Tetraethylammonium Chloride) solution system; adding SAA(Surface Active Agent) and DMAP(Dimethylaminopyridine) for reaction; dissolving out the reaction product by using acetone, standing, extracting and drying to acquire the bio-based plastic. The method mainly has the advantages that 1) the raw materials are wide in source and low in cost; 2) cellulose, hemicellulose and lignose in the wood fiber biomass are comprehensively utilized, and a traditional mode of simple modified utilization of cellulose through separation, extraction and modification is changed; 3) the traditional pretreatment mode through a chemical method is changed through the pretreatment by ball milling, so that the use of lots of highly corrosive reagents and solvents is avoided; 4) the reaction is carried out at normal temperature or low temperature, the reaction time is short, the modification process is simple and easy to operate, and the industrial application prospect is wide; 5) the modified product has good thermal plasticity and can be injected and molded into various plastic products with good mechanical properties.
Owner:NANJING FORESTRY UNIV
Copper-based catalyst with high activity and stability for acetylene hydrochlorination
ActiveCN107008465ALow costIncrease costPhysical/chemical process catalystsPreparation by halogen halide additionSteam pressurePhosphate
The invention relates to a copper-based catalyst with high activity and stability for acetylene hydrochlorination. According to the copper-based catalyst, a copper salt is taken as an active component, wherein the copper salt is selected from one or more of copper chloride, copper nitrate, copper sulfate and copper phosphate. The copper-based catalyst is characterized in that a stabilizer is introduced into the copper-based catalyst; and the stabilizer is selected from one or more of guanidine hydrochloride, tetramethylethylenediamine hydrochloride, tetramethylammonium chloride, tetraethylammonium chloride, benzyltrimethylammonium chloride, benzyl triethyl ammonium chloride, tetramethyl phosphorus chloride, tetrabutyl phosphorus chloride, methyl triphenyl phosphorus chloride and 1-butyl triphenylphosphonium. Through introducing the stabilizer has the advantages of being low in cost, low in toxicity, good in heat stability and small steam pressure into the catalyst, and the stability of the copper-based catalyst for acetylene hydrochlorination is significantly improved.
Owner:TSINGHUA UNIV
Synthesis method for Silicalite-1
ActiveCN105858672ADie intactSilicaMolecular-sieve and base-exchange compoundsTetramethylammonium iodideTetramethylammonium bromide
The invention discloses a synthesis method for a Silicalite-1 molecular sieve, wherein the method comprises the following steps: (1) mixing evenly a silicon source, a structure directing agent, a mineralizer and water, to obtain a reaction mixture with the molar ratio of OH<->:SiO2:R:F:H2O=(0.05-5):1:(0.05-0.39):(0.05-5):(2-100), wherein R represents the mole number of the structure directing agent, F represents the mole number of the mineralizer, and the structure directing agent is at least one selected from the group consisting of tetraethylammonium hydroxide, tetraethylammonium bromide, tetraethylammonium chloride, tetraethylammonium fluoride, tetraethylammonium iodide and triethylamine; (2) transferring the reaction mixture obtained in the step (1) to a pressureproof airtight container, crystallizing for 0.5-60 days at the temperature of 80-200 DEG C and at the self-generated pressure, to obtain a crystallized product; and (3) recycling the crystallized product obtained in the step (2). By the synthesis method, the Silicalite-1 molecular sieve with uniform and perfect crystal grains can be synthesized under the action of the novel structure directing agent.
Owner:CHINA PETROLEUM & CHEM CORP +1
Medium corrosion-resistant fluorubber sealing gasket and production method thereof
InactiveCN106084578AExcellent medium corrosion resistanceImprove wear resistanceTert butyl phenolWater vapor
The invention discloses a medium corrosion-resistant fluorubber sealing gasket and a production method thereof. The sealing gasket is produced from, by weight, 30-50 parts of perfluoroether rubber, 20-40 parts of chloroprene rubber, 4-8 parts of bisphenol AF, 6-9 parts of white factice, 2-4 parts of thioisobutyramide, 19-33 parts of cancrinite powder, 12-24 parts of asbestos wool, 4-5 parts of diperoxocarbamate, 15-20 parts of colloid graphite powder, 3-5 parts of tetraethylammonium chloride, 7-11 parts of C5 petroleum resin, 4-6 parts of 1,2,3,4,5-pentachlorobibenzene, 20-30 parts of carbon black N990, 2-3 parts of 2,2'-methylenebis(4-ethyl-6-tert-butyl phenol), 1-2 parts of N-phenyl-2-naphthylamine and 15-20 parts of a modifier. The sealing gasket produced in the invention has the advantages of very protruding medium corrosion resistance, resistance to oil, acids, alkalis, salts, ethers, alcohols, water vapor and other corrosive media, and excellent wear, ageing and high temperature resistance.
Owner:HUAINAN CAOAN RUNLONG PLASTIC CO LTD
Synthesis method of methyl picolinate
InactiveCN107400898AEfficient use ofReduce pollutionElectrolysis componentsElectrolytic organic productionTetramethylammonium bromideTetrafluoroborate
The invention discloses a synthesis method of methyl picolinate. The method comprises the following steps that 2-bromopyridine, N,N-dimethylformamide or acetonitrile and tetraethylammonium chloride or tetraethylammonium bromide or tetraethylammonium iodide or tetraethylammonium tetrafluoroborate or tetrabutylammonium chloride or tetrabutylammonium bromide or tetrabutylammonium iodide are mixed into an electrolyte; carbon dioxide is introduced for 30min at normal pressure; then, electric carboxylation reaction is performed by using constant current (the carbon dioxide is continuously introduced in the electrolysis process until the electrolysis is completed); then, the methyl picolinate is obtained through esterification and post treatment. A reaction system is simple; the control is easy; in addition, rich Cl resources and CO2 are used as one of raw materials; the raw materials are cheap and can be easily obtained; the cost is low; a novel path is developed for the study on challenging organic matters of green synthetic heterocyclic ring carboxylic acid derivatives and the like.
Owner:LIAOCHENG UNIV
Synthetic method of isonicotinic acid
InactiveCN107354477AEfficient use ofEfficient synthesisElectrolysis componentsElectrolytic organic productionChemical industryTetramethylammonium bromide
The invention discloses a synthetic method of isonicotinic acid. The method comprises the following steps: mixing 4-bromopyridine with N, N-dimethylformamide or acetonitrile and tetraethylammonium chloride or tetraethylammonium bromide or tetraethylammonium iodide or tetraethylammonium tetrafluoroborate or tetrabutylammonium chloride or tetrabutylammonium bromide or tetrabutylammonium iodide to form an electrolyte; introducing carbon dioxide at normal pressure for 30 minutes; and carrying out electrolysis at a constant current, keeping introducing the carbon dioxide during the electrolysis process until the electrolysis is ended, and obtaining the isonicotinic acid after carrying out post-treatments. According to the synthetic method of the isonicotinic acid, the reaction system is simple and easy to control, the rich C1 resource, namely the carbon dioxide is used as one of the raw materials, is cheap and easy to obtain, is low in cost and does not pollute the environment, and therefore a new way is developed for the study of the green isonicotinic acid, an extremely good application prospect of the synthetic method is displayed in the medicine industry, the food industry, the chemical industry and the electronic industry, and the synthetic method of the isonicotinic acid is a process route with high industrial synthetic value.
Owner:LIAOCHENG UNIV
Procedure for screening of neuroactive substance and the associated neural plasticity
InactiveUS20050144654A1Simple and inexpensive and rapid methodRapid and simple and inexpensiveCompounds screening/testingBiological testingDrug withdrawalNeuroactive substances
The invention relates to a procedure for screening of neuroactive substance and the associated neural plasticity by treating fruitfly Drosophila melanogaster adult males with fly medium containing either of the neuroactive compounds strychnine, pentylenetetrazol, pilocarpine hydrochloride, tetraethylammonium chloride, lithium carbonate and ethosuximide, subjecting flies to negative geotaxis and horizontal locomotor assays, observing the height climbed and distance walked by and the climbing speed of the flies wherein an altered height climbed by flies under drug treatment and a long-lasting alteration in climbing speed of flies after drug withdrawal is most characteristic of the neuractive compounds.
Owner:COUNCIL OF SCI & IND RES
Novel absorbent for benzene-series volatile organic compounds (VOCs) and preparation method and application of absorbent
ActiveCN110180329AEfficient removalImprove solubilityGas treatmentDispersed particle separationBenzeneOrganic solvent
The invention relates to a novel absorbent for benzene-series volatile organic compounds (VOCs) and a preparation method and application of the absorbent. The preparation method comprises the following steps: mixing oleic acid and tetraethylammonium chloride according to the molar ratio of (2 to 5) to 1, heating to 70-120 DEG C and stirring until a solution is clear and transparent, stopping heating, then cooling the solution naturally to normal temperature, and stopping stirring to obtain the novel absorbent for the benzene-series volatile organic compounds. Compared with a traditional organic solvent and ionic liquid, the absorbent has the advantages of low price and good biodegradability, difficult volatilization, easy recovery, simple preparation and the like, meanwhile, the absorbentis convenient to apply, an adopted absorption technology combining an absorption tower and a flash tank can effectively remove the benzene-series volatile organic compounds in waste gas, and the removal rate of the benzene-series volatile organic compounds is as high as 90% or above.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Plastic concrete for diaphragm wall and preparation method and construction process thereof
ActiveCN112321232AImprove crack resistanceImprove flexural performanceMarine site engineeringFiberPolyvinyl alcohol
The invention discloses plastic concrete for a diaphragm wall and a preparation method and a construction process of the plastic concrete, and relates to the technical field of building materials. Theplastic concrete for a diaphragm wall is mainly prepared from the following concrete raw materials in parts by weight: 60-120 parts of cement, 100-150 parts of water and 2-8 parts of polyvinyl alcohol fibers. The concrete raw materials also comprise the following concrete powder in parts by weight: 150-230 parts of broken stone, 200-250 parts of sand and 50-100 parts of fly ash. The concrete rawmaterials also comprise modified bentonite, and the modified bentonite is mainly prepared from the following raw materials in parts by weight: 35-45 parts of bentonite, 5-12 parts of soluble zircon salt and 2-5 parts of tetraethylammonium chloride. The preparation method comprises the following steps of: mixing materials, preparing the plastic concrete and the like. The plastic concrete for a diaphragm wall has the advantage of good mechanical property. The preparation method has the advantage that the mechanical property of the product can be improved.
Owner:四川鼎德商品混凝土有限公司
Synthetic method of thiazole-4-formic acid
ActiveCN108977839ASimple systemMild conditionsElectrolysis componentsComponent separationTetramethylammonium iodideTetramethylammonium bromide
The invention discloses a synthetic method of thiazole-4-formic acid. The method comprises the steps that 4-bromo-thiazole is added into a quaternary ammonium salt solution to prepare electrolyte, theconstant current is connected into the electrolyte to conduct an electric carboxylation reaction in the atmosphere of carbon dioxide, an acetonitrile water solution is adopted to conduct hydrolysis,and thiazole-4-formic acid can be obtained, wherein quaternary ammonium salt is selected from tetraethylammonium chloride hydrate, tetraethylammonium bromide, tetraethylammonium iodide, tetraethyl tetrafluoroborate, tetrabutylammonium chloride hydrate, tetrabutylammonium bromide and tetrabutylammonium iodide, the solvent of the electrolyte is N,N-dimethyl formamide or acetonitrile. The reaction system of the synthetic method is simple, the condition is moderate, the process is easy to control, carbon dioxide can be utilized, and a route is provided for solution of greenhouse effect gas.
Owner:LIAOCHENG UNIV
A copper-based catalyst for acetylene hydrochlorination with high activity and stability
ActiveCN107008465BLow costLow toxicityPhysical/chemical process catalystsPreparation by halogen halide additionPtru catalystPhosphate
The invention relates to a copper-based catalyst with high activity and stability for acetylene hydrochlorination. According to the copper-based catalyst, a copper salt is taken as an active component, wherein the copper salt is selected from one or more of copper chloride, copper nitrate, copper sulfate and copper phosphate. The copper-based catalyst is characterized in that a stabilizer is introduced into the copper-based catalyst; and the stabilizer is selected from one or more of guanidine hydrochloride, tetramethylethylenediamine hydrochloride, tetramethylammonium chloride, tetraethylammonium chloride, benzyltrimethylammonium chloride, benzyl triethyl ammonium chloride, tetramethyl phosphorus chloride, tetrabutyl phosphorus chloride, methyl triphenyl phosphorus chloride and 1-butyl triphenylphosphonium. Through introducing the stabilizer has the advantages of being low in cost, low in toxicity, good in heat stability and small steam pressure into the catalyst, and the stability of the copper-based catalyst for acetylene hydrochlorination is significantly improved.
Owner:TSINGHUA UNIV
Preparation method of bis tetraethylammonium dodecahydrododecaborate
ActiveCN104557570AEnhanced interactionImprove cracking efficiencyOrganic compound preparationAmino compound preparationInorganic ChemicalDistillation
The invention discloses a method for preparing bis tetraethylammonium dodecahydrododecaborate, belonging to the field of inorganic chemical synthesis. The method comprises the following steps: sequentially adding tetraethylammonium chloride, sodium borohydride, a composite catalyst, deionized water and paraffin oil into a microwave reactor provided with a tail gas absorption unit, stirring uniformly, carrying out 300W microwave irradiation at 25-30 DEG C for 60-80 seconds, carrying out 800W microwave irradiation at 200-205 DEG C for 60-80 minutes, taking out the reaction mixture, filtering with petroleum ether, adding water into the filter cake, heating under reflux, cooling, filtering, drying the filtrate by distillation, adding 80 vol% isopropanol, heating under reflux, carrying out hot filtration, cooling the filtrate, and filtering to obtain the bis tetraethylammonium dodecahydrododecaborate. The method is simple to operate, and has the advantages of short reaction time, high product yield and the like.
Owner:ZHENGZHOU SIGMA CHEM
Preparation method of spongy tantalum sheets
The invention belongs to the technical field of tantalum sheet preparation and discloses a preparation method of spongy tantalum sheets. The preparation method comprises the steps that an ethanol solution is prepared, a conductive agent, namely tetraethylammonium chloride, is added into the ethanol solution to prepare an electrolyte solution; tantalum sheets are adopted as an anode electrode, platinum is adopted as a cathode electrode, and the anode electrode and the cathode electrode are placed in an electrolytic cell; the prepared electrolyte solution is placed in the electrolytic cell, theelectrode spacing between the anode electrode and the cathode electrode is well adjusted, and the anode electrode and the cathode electrode are fixed; the anode electrode and the cathode electrode areconnected to the positive pole and the negative pole of a direct-current power source separately, electrolytic corrosion is started, and the spongy tantalum sheets are obtained. No indissolvable matter is generated to deposit on the spongy tantalum sheets in the electrolytic corrosion process. The prepared spongy tantalum sheets are single in composition, high in purity, high in porosity and large in specific surface area. The electrolyte solution is simple in composition and easy to control, compositions are unlikely to be decomposed, and the process is stable.
Owner:HUNAN UNIV OF TECH
Preparation method of high-purity tetraethylammonium chloride
InactiveCN108586261AHigh purityHigh yieldAmino compound purification/separationOrganic compound preparationRoom temperatureDissolution
The invention provides a preparation method of high-purity tetraethylammonium chloride, which includes the steps of: 1) preparing a chloroethane-xylene solution; 2) adding triethylamine and a solventto a high-pressure reaction kettle, dropwise adding the chloroethane-xylene solution to the high-pressure reaction kettle at 70-80 DEG C, after the solution is added, performing a heat preservative reaction for 30 min, feeding gas to maintain the pressure in the kettle under 1.5-3 MPa, and performing a reaction for 12-28 h at 120-150 DEG C, stopping feeding the gas, slowly opening an exhaust valveand cooling the system to room temperature; 3) filtering the reaction liquid to obtain a filter cake A being a tetraethylammonium chloride crude product, adding the crude product to water, stirring the liquid at 40-50 DEG C for dissolution, and filtering the liquid while hot, adding a filtrate to a mixed solvent of acetonitrile and pentanediol, stirring the solution, allowing the solution to stand, filtering the solution to obtain a filter cake B, and drying the filter cake B to prepare the high-purity tetraethylammonium chloride. The preparation method has simple steps and high production efficiency, is high in purity and yield of product, and is suitable for industrial production.
Owner:盐城泛安化学有限公司
Method for Producing 2-Chloro-1,3,3,3-Tetrafluoropropene
ActiveUS20160023968A1Efficient productionSuppress generationPreparation by hydrogen halide split-offOrganic-compounds/hydrides/coordination-complexes catalysts1,3,3,3-TetrafluoropropeneChloride
A production method of 2-chloro-1,3,3,3-tetrafluoropropene (1224) according to the present invention includes bringing 2,3-dichloro-1,1,1,3-tetrafluoropropane (234da) into contact with an inorganic base having a pKa of 4.8 or greater in an aqueous medium in the presence of a phase transfer catalyst. Preferably, the inorganic base has a pKa of 10 or greater. Further, the phase transfer catalyst is preferably at least one selected from the group consisting of tetrabutylammonium bromide, methyltri-n-octylammonium chloride, benzyltrimethylammonium chloride and tetraethylammonium chloride. It is possible by this method to selectively produce 1224 from 234da.
Owner:CENT GLASS CO LTD
Synthesis method for Silicalite-1 molecular sieve
ActiveCN105858681AFew frame defectsComplete crystal formCrystalline aluminosilicate zeolitesTetramethylammonium bromideSynthesis methods
The invention discloses a synthesis method for a Silicalite-1 molecular sieve, wherein the method comprises the following steps: (1) mixing evenly a silicon source, a structure directing agent and water with an optionally alkali source, to obtain a reaction mixture with the molar ratio of SiO2 to R to OH<-> to H2O of 1 to (0.05-0.39) to (0.05-2) to (2-100), wherein R represents the mole number of the structure directing agent, and the structure directing agent is at least one selected from the group consisting of tetraethylammonium hydroxide, tetraethylammonium bromide, tetraethylammonium chloride, tetraethylammonium fluoride, tetraethylammonium iodide and triethylamine; (2) according to the molar ratio of a mineralization agent to OH<-> of (1-5) to 1, adding the mineralization agent to the reaction mixture obtained in the step (1), stirring evenly, crystallizing for 0.5-60 days at the temperature of 80-200 DEG C and at the self-generated pressure, to obtain a crystallized product; and (3) recycling the crystallized product obtained in the step (2). By the synthesis method, the Silicalite-1 molecular sieve with perfect and uniform crystal grains and fewer skeleton defects can be synthesized under the action of the novel structure directing agent.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method for naphthalene alkylation catalyst
InactiveCN107952475ALong inactivation timeHigh selectivityMolecular sieve catalystsHydrocarbonsTetramethylammonium bromidePotassium hydroxide
The invention relates to a preparation method and an application for a naphthalene alkylation catalyst. The invention is mainly to solve the problems of poor selectivity and easy deactivation of a naphthalene alkylation catalyst in the prior art. The preparation method comprises the following steps: mixing a silicon source, an aluminum source, alkali, water and a template agent so as to obtain aninitial colloid, and carrying out hydrothermal crystallization so as to prepare a ZSM-5 / ZSM-12 composite molecular sieve; and modifying the prepared composite molecular sieve through ion exchange, andcarrying out calcination and silylation modification so as to obtain the naphthalene alkylation catalyst, wherein the silicon source is an alkaline ammonia stable silicon sol; the aluminum source issodium metaaluminate; the inorganic alkali is sodium hydroxide or potassium hydroxide; the template is one or more selected from the group consisting of tetraethylammonium hydroxide or tetraethylammonium bromide and tetraethylammonium chloride; and in the colloid, the mol ratio of SiO2 to Al2O3 is 62 to 150, the mol ratio of R to SiO2 is 0.15 to 0.35 and the mol ratio of H2O to SiO2 is 13 to 30,wherein R represents the template agent. The modified composite molecular sieve provided by the invention shows excellent catalytic performance when used in a naphthalene alkylation reaction.
Owner:CHINA PETROLEUM & CHEM CORP +1
A method for preparing bio-based plastics through esterification modification of lignocellulosic fibers
The invention discloses a method for preparing bio-based plastic through esterification modification of wood fiber. The method comprises the following steps: drying and crushing wood fiber biomass; pretreating the powder by ball-milling; swelling and dissolving in a DMSO(Dimethylsulfoxide) / TEAC(Tetraethylammonium Chloride) solution system; adding SAA(Surface Active Agent) and DMAP(Dimethylaminopyridine) for reaction; dissolving out the reaction product by using acetone, standing, extracting and drying to acquire the bio-based plastic. The method mainly has the advantages that 1) the raw materials are wide in source and low in cost; 2) cellulose, hemicellulose and lignose in the wood fiber biomass are comprehensively utilized, and a traditional mode of simple modified utilization of cellulose through separation, extraction and modification is changed; 3) the traditional pretreatment mode through a chemical method is changed through the pretreatment by ball milling, so that the use of lots of highly corrosive reagents and solvents is avoided; 4) the reaction is carried out at normal temperature or low temperature, the reaction time is short, the modification process is simple and easy to operate, and the industrial application prospect is wide; 5) the modified product has good thermal plasticity and can be injected and molded into various plastic products with good mechanical properties.
Owner:NANJING FORESTRY UNIV
Novel mildew-resistant asphalt paint and preparation method thereof
The invention relates to the technical field of building materials, and especially relates to a novel mildew-resistant asphalt paint and a preparation method thereof. The novel mildew-resistant asphalt paint is prepared from, by weight, 30-40 parts of a coal tar asphalt liquid, 15-25 parts of epoxy resin, 7-12 parts of zinc chromate, 20-25 parts of polyurethane, 10-15 parts of ethylene glycol, 1-3 parts of potassium chloride, 2-5 parts of sodium dodecyl benzene sulfonate, 8-11 parts of polyether acrylate, 2-6 parts of tetraethylammonium chloride, 2-7 parts of mica powder, 5-10 parts of an antiseptic, 3-7 parts of deionized water, 5-12 parts of aluminum powder, 3-5 parts of iron red, 1-6 parts of zinc yellow, 2-6 parts of ammonium bromide, 10-15 parts of tetraethylenepentamine, 2-5 parts of glycerol triacetate and 15-25 parts of xylene. The mildew-resistant asphalt paint with the advantages of simplicity in preparation, low cost, high and low temperature resistance, ageing resistance and good durability is prepared through adopting the coal tar asphalt liquid, polyurethane, epoxy resin and polyether acrylate and optimizing proportions of all the components, and the preparation method has the advantages of optimization of various technological parameters in the preparation process, increase of the production efficiency, and shortening of the preparation period.
Owner:ANQING YIAN GAS CO LTD
Novel benzene series volatile organic compound absorbent and its preparation method and application
The invention relates to a novel benzene series volatile organic compound absorbent and its preparation method and application. The preparation method comprises the following steps: mixing oleic acid and tetraethylammonium chloride according to the molar ratio of (2-5): 1 Heating to 70° C. to 120° C. and stirring until the solution is clear and transparent, then stopping heating, then cooling the solution to room temperature naturally, and stopping stirring to obtain a novel benzene-based volatile organic compound absorbent. Compared with traditional organic solvents and ionic liquids, the absorbent has the advantages of low price, good biodegradability, difficult volatilization, easy recovery, and simple preparation. The process can effectively remove benzene-based volatile organic compounds in the exhaust gas, and the removal rate of benzene-based volatile organic compounds is as high as 90%.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Preparation method for catalyzing pyrimidine cyclic hydroxyl chlorination by tetraethylammonium chloride
InactiveCN110950806ABig pollutionReduced catalytic efficiencyOrganic chemistryPtru catalystTetraethylammonium chloride
The invention discloses a preparation method for catalyzing pyrimidine cyclic hydroxyl chlorination by tetraethylammonium chloride, which comprises the following steps: (1) adding phosphorus oxychloride into a container, adding tetraethylammonium chloride as a catalyst, adding a pyrimidine cyclic hydroxyl compound, and heating to react; (2) preparing an alkali liquor, cooling to 0 DEG C, and slowly dropwise adding an obtained reaction liquid into the alkali liquor for quenching to obtain a target product. The method has the advantages that the provided pyrimidine cyclic hydroxyl chlorination catalysis method is small in environmental pollution, the obtained product is light in color, the catalysis efficiency is high, and the phosphorus oxychloride recovery pressure is small.
Owner:ANQING BOMAN BIOTECHNOLOGY CO LTD
Method for trapping toluene by using eutectic solvent
PendingCN113069889ALow costHarm reductionGas treatmentDispersed particle separationPropanoic acidEthyl group
Owner:BEIJING UNIV OF TECH
A kind of synthetic method of thiazole-4-carboxylic acid
ActiveCN108977839BSimple systemMild conditionsElectrolysis componentsComponent separationTetramethylammonium iodideBoronic acid
The invention discloses a synthetic method of thiazole-4-formic acid. The method comprises the steps that 4-bromo-thiazole is added into a quaternary ammonium salt solution to prepare electrolyte, theconstant current is connected into the electrolyte to conduct an electric carboxylation reaction in the atmosphere of carbon dioxide, an acetonitrile water solution is adopted to conduct hydrolysis,and thiazole-4-formic acid can be obtained, wherein quaternary ammonium salt is selected from tetraethylammonium chloride hydrate, tetraethylammonium bromide, tetraethylammonium iodide, tetraethyl tetrafluoroborate, tetrabutylammonium chloride hydrate, tetrabutylammonium bromide and tetrabutylammonium iodide, the solvent of the electrolyte is N,N-dimethyl formamide or acetonitrile. The reaction system of the synthetic method is simple, the condition is moderate, the process is easy to control, carbon dioxide can be utilized, and a route is provided for solution of greenhouse effect gas.
Owner:LIAOCHENG UNIV
A kind of synthetic method of silicalite-1 molecular sieve
The invention discloses a synthesis method for a Silicalite-1 molecular sieve, wherein the method comprises the following steps: (1) mixing evenly a silicon source, a structure directing agent and water with an optionally alkali source, to obtain a reaction mixture with the molar ratio of SiO2 to R to OH<-> to H2O of 1 to (0.05-0.39) to (0.05-2) to (2-100), wherein R represents the mole number of the structure directing agent, and the structure directing agent is at least one selected from the group consisting of tetraethylammonium hydroxide, tetraethylammonium bromide, tetraethylammonium chloride, tetraethylammonium fluoride, tetraethylammonium iodide and triethylamine; (2) according to the molar ratio of a mineralization agent to OH<-> of (1-5) to 1, adding the mineralization agent to the reaction mixture obtained in the step (1), stirring evenly, crystallizing for 0.5-60 days at the temperature of 80-200 DEG C and at the self-generated pressure, to obtain a crystallized product; and (3) recycling the crystallized product obtained in the step (2). By the synthesis method, the Silicalite-1 molecular sieve with perfect and uniform crystal grains and fewer skeleton defects can be synthesized under the action of the novel structure directing agent.
Owner:CHINA PETROLEUM & CHEM CORP +1
SPE-DES-HPLC method for simultaneously determining two flavanol substances in Shanxi mature vinegar
ActiveCN113567578AOptimal adsorption timeAchieve separationComponent separationPhosphatePhosphoric acid
The invention belongs to the technical field of flavanol substance detection, and discloses an SPE-DES-HPLC method for simultaneously determining two flavanol substances in Shanxi mature vinegar. According to the method, a Dimonsil C18 chromatographic column is selected, and the flow velocity is 1mL / min; the sample size is 10 [mu] L; the detection wavelength is 280 nm; a mobile phase is a 0.1% phosphate buffer and acetonitrile; and gradient elution is carried out. Through an optimization experiment, when the dosage of the activated XAD-2 macroporous adsorption resin is finally determined to be 188mg, the volume of the eutectic solvent (tetraethylammonium chloride-n-caprylic acid in a molar ratio of 1: 3) is 400mu L, the adsorption time is 11min, and the analysis time is 20min, the enrichment effect of the two flavanol substances is optimal. Under the condition, the linear relation of catechin and epicatechin is sound (R2 > 0.99), and compared with the tedious process of traditional solid-phase extraction, the detection limit, the quantitation limit, the intraday and interday relative standard deviation and the adding standard recovery rate show that the method is simpler, more convenient, high in sensitivity and small in matrix interference, and is suitable for enrichment determination of catechin and epicatechin in Shanxi mature vinegar.
Owner:神池县海子园醋业有限公司
High-cleanness agent for removing mercaptan in gasoline and preparation method of high-cleanness agent
InactiveCN106635130AImprove the mixing effectPrevent false miscibilityHydrocarbon oils refiningHydrocarbon oils treatment productsGlycerolGasoline
The invention discloses a high-cleanness agent for removing mercaptan in gasoline. The high-cleanness agent is prepared from the following components in parts by weight: 30 to 60 parts of tetraethylammonium chloride, 20 to 40 parts of glycerol, 20 to 30 parts of ethylene glycol, 15 to 30 parts of potassium hydroxide, 10 to 15 parts of lignosulfonate and 10 to 30 parts of water. Meanwhile, the invention also discloses a method for the high-cleanness agent for removing the mercaptan in the gasoline. Compared with a traditional technology, the high-cleanness agent disclosed by the invention has the advantages of low production cost, low consumption, high intersolubility with the gasoline and high mercaptan removing efficiency; meanwhile, the content of chloride ions is low, so that secondary pollution to the environment is avoided.
Owner:江苏汉光实业股份有限公司
Synthetic method of methyl 4-chlorobenzoate
InactiveCN107324996AEfficient synthesisEfficient use ofElectrolysis componentsOrganic compound preparationTetramethylammonium iodideTetramethylammonium bromide
The invention discloses a synthetic method of methyl 4-chlorobenzoate. The synthetic method comprises the following steps: mixing 1,4-dichlorobenzene with N,N-dimethylformamide or acetonitrile and tetraethylammonium iodide or tetraethylammonium bromide or tetraethylammonium chloride or tetraethylammonium tetraborate or tetrabutylammonium iodide or tetrabutylammonium bromide or tetrabutylammonium chloride to form electrolyte, introducing carbon dioxide into the electrolyte at the room temperature for 30 minutes, carrying out electrolysis by virtue of a constant current (carbon dioxide is continuously introduced during the electrolysis until the electrolysis is finished), and carrying out esterification and post-treatment, so as to obtain methyl 4-chlorobenzoate. The synthetic method has the beneficial effects that a reaction system is simple and easy to control; rice C1 resource CO2 is taken as one of the raw material and is cheap, easily available and low in cost, the environmental pollution is avoided, and a novel path is opened for the research of environment-friendly synthesis of methyl 4-chlorobenzoate; and the synthetic method presents excellent application prospects in the industries of chemical engineering and electrons and is a process route with high industrial synthesis values.
Owner:LIAOCHENG UNIV
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