118 results about "Tetramethylammonium bromide" patented technology

The invention discloses a synthetic method of high-silica ZSM-5 zeolite, the method comprises the steps of adopting water glass as a silica source, adopting aluminum salts of aluminum sulfate, aluminum nitrate, aluminum chloride and the like, as well as organic aluminum compounds of sodium metaaluminate, isopropanol and the like as aluminum sources, using sulfuric acid or hydrochloric acid to regulate alkalinity, adding an organic template, simultaneously adding a guide adhesive, carrying out high-temperature crystallization at 120-200 DEG C, and then synthesizing the high-silica ZSM-5 zeolite with the SiO2/Al2O3 ratio which is greater than 100; and the molar ratio of raw materials is as follows: SiO2/Al2O3 is equal to 100-infinity, Na2O/SiO2 is equal to 0.05-0.20, and H2O/SiO2 is equal to 10-100. The organic template comprises tetrapropylammonium bromide, tetrapropylammonium hydroxide, tetraethylammonium bromide, tetraethylammonium hydroxide, n-butylamine, ethylamine, hexamethylene diamine and any other organic matters which can synthesize the ZSM-5 zeolite or the mixture thereof, wherein the using amount of the organic template is that R/SiO2 is equal to 0.005-0.50; and the amount of silicon dioxide in the guide adhesive is 0-5% of the total weight of the silicon dioxide in a synthetic system. The synthetic method can synthesize the high-silica ZSM-5 zeolite with the SiO2/Al2O3 ratio which is greater than 100 and has the advantages of cheap raw materials, a small using amount of the organic template, and capability of realizing the control of product appearance and particle size by changing the relative using amount of the template and the guide adhesive.

The invention discloses a cloth cart. The cloth cart comprises a metal rotating shaft subjected to surface treatment. The surface treatment process includes the following steps that firstly, by mass, 1-2 parts of mercaptobenzothiazole, 0.9 part of nickel nitrate, 1.4 parts of 1-Hydroxyethylidene-1,1-diphosphonicacid, 2.3 parts of polyvinylpyrrolidone, 1.8 parts of dipyrazolone, 2.3 parts of 2,6-di-t-butyl-alpha-dimethylamino hydroquinone and 1.6 parts of tetramethyl ammonium bromide are added into 12 parts of deionized water and evenly stirred and mixed, and surface treatment working fluid is obtained; secondly, the surface treatment working fluid is heated to 53 DEG C; thirdly, the metal rotating shaft is put into the surface treatment working fluid to be steeped for 32 min, taken out and then dried. Due to the fact that the metal rotating shaft of the cloth cart is subjected to surface treatment, good rub resistance, corrosion resistance, rust resistance, heat resistance, cold resistance and weather resistance are achieved.

The invention relates to a three-crystalline phase composite molecular sieve. The composite molecular sieve has a Y molecular sieve crystalline phase, a Beta zeolite crystalline phase and a ZSM-12 molecular sieve crystalline phase. A preparation method for the three-crystalline phase composite molecular sieve comprises the following steps of: adding Y molecular sieve powder into solution containing sodium hydroxide and tetraethylammonium bromide; selectively adding ammonia water, adding a silicon source, and stirring uniformly to obtain a reaction mixture gel system, wherein the molar ratio in the reaction mixture gel system is: 0.90-1.15 Na2O:8.0-15.0 SiO2:0.8-2.0TEABr:0-8.0 NH4OH:AL2O3:80-102 H2O; crystallizing the reaction mixture under the closed condition at 130 to 160 DEG C for 5 to 10 days to obtain a Y-Beta-ZSM-12 composite molecular sieve. The composite molecular sieve is a new product and can be used for various catalytic processes.

The invention relates to a preparation method of anacardol glycidyl ether. According to the preparation method, raw materials include anacardol, epoxy chloropropane, sodium hydroxide and a catalyst are used. The catalyst is a mixture of tetraethylammonium bromide and tetramethyl ammonium bromide; meanwhile, reduced pressure distillation is used for recovering the epoxy chloropropane for many timesin the method. The epoxide equivalent of the anacardol glycidyl ether prepared by the preparation method provided by the invention is lower and stable; the content of free anacardol is greatly reduced.

The invention provides a textile fabric dye. The textile fabric dye is prepared from raw materials in parts by weight as follows: 40-60 parts of a plant extract, 10-14 parts of chitosan, 1-2 parts of glycerin, 1-2.5 parts of zinc stearate, 2-3 parts of polyvinylpyrrolidone, 1-2 parts of mica powder, 8-15 parts of disodium 4-dodecyl 2-sulphonatosuccinate, 0.8-1 part of tetramethylammonium bromide, 8-14 parts of ethyltriethoxysilane, 3-6 parts of sodium carbonate and 50-60 parts of water. The plant extract is taken as a pigment source of the dye, the dye after reasonable configuration is harmless to human bodies, cannot cause human allergy easily, is environment-friendly, lower in cost, safe, pollution-free and uniform and firm in dyeing, does not affect softness of the textile fabric and can meet the requirement of large-scale industrial production.

The invention discloses a preparation method of a low-temperature plasma modified catalytic fiber filter material. The method comprises the following steps: 1) weighing polyurethane as a solute, and preparing a solution by using a dimethylformamide solution as a solvent; 2) adding a tetraethylammonium bromide powder into the obtained solution to obtain a mixed solution; 3) adding a catalyst precursor into the mixed solution, and performing stirring to obtain an electrostatic spinning solution; 4) carrying out electrostatic spinning on the electrostatic spinning solution, and collecting spun yarns to obtain a nanofiber film; 5) putting the nanofiber film in a low-temperature plasma modification device, introducing argon, carrying out plasma modification, and cooling the obtained film to room temperature to obtain a low-temperature plasma modified catalytic fiber film; and 6) coating and packaging the low-temperature plasma modified catalytic fiber film to obtain the low-temperature plasma modified catalytic fiber filter material. The method which adopts preparation of the fiber filtration material by combining the electrostatic spinning with the low-temperature plasma modification process as the innovation point has the advantages of wide material sources, easiness in process operation, good product processability, good market competitiveness and good promotion values.

The invention relates to a method for preparing a mordenite/Zeolite Socony Mobil (ZSM)-5 composite molecular sieve, which comprises the following steps: evenly mixing sodium hydroxide, tetraethylammonium bromide and deionized water; adding mordenite or ZSM-5 seed crystal, wherein the seed crystal addition volume is 5wt% of total feeding material SiO2; carrying out ultrasonic vibration for 30min to evenly disperse the seed crystal; then, adding kaolin microspheres and white carbon black; stirring for half an hour, and transferring gel into a polytetrafluoroethylene reaction kettle; and then transferring the gel into an oven after ageing at the room temperature for 10-40h and crystallizing at the temperature of 110-170DEG C for 14-70h. A reaction system is formed at the following molar ratio: SiO2/Al2O3 is equal to 10-60, Na2O/SiO2 is equal to 0.029-0.31, tetraethylammonium (TEA)+/SiO2 is more than or equal to 0.02, and H2O/SiO2 is equal to 5.0-30.0. In the method, only the single seedcrystal needs to be added to obtain a product which can be directly used for fluid catalytic cracking (FCC) reaction after being slightly modified.

The invention relates to a preparation method of an H beta/HMCM-49 compound molecular sieve, which comprises the steps of: mixing and dissolving sodium aluminate, sodium hydroxide and potassium hydroxide into distilled water; dissolving tetraethylammonium bromide and ammonia water to prepare hexamethonium ammonia water; at normal temperature, reacting sodium and potassium meta-aluminate alkali liquor and the hexamethonium ammonia water with silicon sol, adding Na beta molecular sieve raw powder for crystallizing; dissolving the sodium aluminate into the distilled water, adding hexamethyleneimine; at normal temperature, dropping the silicon sol; adding NaMCM-49 molecular sieve compound molecular sieve raw powder, mixing and introducing O3 or H2O2 for oxidizing to prepare modified H beta/HMCM-49 compound molecular sieve raw powder; exchanging with an ammonium nitrate solution to prepare H beta/HMCM-49 compound molecular sieve raw powder. A compound molecular sieve has efficacy of an MCM-49 molecular sieve and a beta molecular sieve, and has the characteristics of uniform mixing, large average pore diameter, many through holes and strong total acidity.

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.

The invention provides a preparation method of a silicoaluminophosphate molecular sieve with a hierarchical pore structure. The method comprises the steps: firstly, by adopting tetraethyl orthosilicate or silica sol as a silicon source, pseudo-boehmite or aluminum isopropoxide as an aluminum source, orthophosphoric acid as a phosphorus source, and triethylamine, tetraethylammonium bromide or tetraethylammonium hydroxide as a template agent, uniformly stirring the silicon source, the aluminum source, the phosphorus source, the template agent and deionized water, performing hydrothermal crystallization treatment, and then centrifuging to obtain supernatant liquor; secondly, uniformly stirring the silicon source, the aluminum source, the phosphorus source, the template agent and the supernatant liquor, performing hydrothermal crystallization treatment, and filtering to obtain a filter cake and filtrate; thirdly, sequentially washing, drying and roasting the filter cake, and naturally cooling to obtain the silicoaluminophosphate molecular sieve with the hierarchical pore structure. The prepared silicoaluminophosphate molecular sieve provided by the invention has an obvious hierarchical pore structure, greatly shortens the diffusion path, improves the acid site accessibility, significantly prolongs the service life, and has very important practical values in reaction of preparing olefin from methanol.

The invention relates to a preparation method of tetramethylammonium bromide. The preparation method is characterized by comprising the following steps of: (1) performing a synthetic reaction on the tetramethylammonium bromide; (2) filtering; and (3) refining. The preparation method increases product yield, meets the market demand and enhances the economic and social benefits of an enterprise.

A method of using biology in the diatomite purification to prepare coal washing water of coal mine and mine water treatment agent relates to the preparation and the application of coal washing water and mine water treatment agent. Low grade diatomite in associated SiO2 in a pickling essential diatom earth purifying process is used by the invention to be immersed in distilled water, filtered and dried until the water content is less than 5%. P123, sodium metaphosphate, cetyl trimethyl ammonium bromide and tetramethylammonium bromide are dissolved and prepared to be solution, the weight percent concentration of which is 2.5-5. The pH value is regulated to be 8-11. The weight ratio of the diatomite to the solution is 1 to 10-1 to 30. The solution is stirred and filtered to obtain a filter cake, which is dried to collect a resultant. And the weight percent concentration of P123 in the solution is better 2.5. When used, the treatment agent of 0.1-0.3g/L is put in the coal washing water or the mine water to be stirred for thirty seconds and kept statically. Supernatant liquid is siphoned. Diatomite coal sludge of lower layer is recycled. The invention has the advantages of short flocculation time and less energy consumption. The suspended substance sedimentation rate and the COD removal rate are improved. Fallouts are easy to be removed. And the objectives of recycling the mine water and coal water and reducing the environmental pollutions are achieved.

The invention relates to a Y/ZSM-12 composite molecular sieve and a preparation method thereof. The composite molecular sieve is provided with a Y molecular sieve crystal phase and a ZSM-12 molecular sieve crystal phase. The preparation method for the composite molecular sieve includes the following steps: Y-type molecular sieve powder is added into solution containing sodium hydroxide and tetraethylammonium bromide, a silicon source is added, a reaction mixture gel system is obtained after uniform stirring, the molar ratio of the mixture of the reaction mixture gel system is (1.16 to 1.21) Na2O:(9.0 to 11.0) SiO2:(2.20 to 2.30) TEABr:Al2O3:(135 to 150) H2O, the reaction mixture is crystallized under a hermetic condition and at the temperature of 130 DEG C to 150 DEG C for 4 to 7 days, and thereby the Y/ZSM-12 composite molecular sieve is obtained. The composite molecular sieve provided by the invention is a new product, and can be used in a variety of catalytic processes.

The invention discloses a method for preparing polyoxovanadium borate, which comprises the following steps of: putting boric acid and sodium metavanadate into a glass tube with one sealed end; adding tetramethylammonium bromide and ethylenediamine into the glass tube; adding water dropwise into the glass tube until the substances in the tube become paste; mixing the substances uniformly; freezing the substances in the tube by using liquid nitrogen; and vacuumizing and sealing the tube; and heating the tube for 4 to 7 days at the temperature of between 90 and 150 DEG C or putting the tube in the sun to be irradiated for 3 to 14 days to obtain green hexagonal crystal grain polyoxovanadium borate. The method has the advantage of low energy consumption due to the adoption of low-temperature solvent thermochemical reaction or photochemical reaction.

The invention relates to a preparation method of a hierarchical-pore CoAlPO-5 molecular sieve. The preparation method comprises the following steps: (1) uniformly mixing a succinic acid-choline chloride-tetraethylammonium bromide ternary eutectic mixture EM, aluminium isopropoxide and cobalt acetate tetrahydrate, then adding a proper amount of phosphoric acid and hydrofluoric acid so as to obtain a mixed system of a:Co2O3.Al2O3.b:P2O5.c:HF.d:EM, wherein coefficients are accounted in molar ratio that a is equal to 0.2-0.6, b is equal to 1.1-2.2, c is equal to 0.45-1.35 and d is equal to 62.0-124.0, and heating to 120 DEG C, so as to be mixed uniformly to obtain the mixture; (2) heating the mixture to 175 DEG C, carrying out crystallization for 15 minutes at an ordinary pressure or a self-generated pressure; (3) cooling the crystallization product to a room temperature, carrying out centrifugal washing repeatedly with water and acetone, and drying for 2 h at 90 DEG C so as to obtain a powder product of the hierarchical-pore CoAlPO-5 molecular sieve.

The invention provides an arylmethyl phosphonate preparation method. The method includes the following steps that arylmethyl ester, triethyl phosphate and a catalyst are sequentially added into a reactor and reacted for 5-8 h at the temperature of 100-200 DEG C after full stirring, and after excessive triethyl phosphate is distilled off through decompression, the mixture continues to be reacted for 3-7 h at the temperature of 100-200 DEG C; then, the mixture is cooled to the room temperature, a product is extracted through a mixed solvent, and arylmethyl phosphonate is obtained after the mixed solvent is removed. The catalyst is one or more of tetramethyl ammonium bromide, tetraethylammonium bromide, tetrabutyl ammonium bromide, benzyltrimethyl ammonium bromide, cetyl trimethyl ammonium bromide, cetyltrimethyl ammonium chloride, ammonium chloride, sodium iodide and potassium iodide. Arylmethyl phosphonate is synthesized through a one-step method, other solvents are not added, operation is easy, and the product yield is high and can be 85.3% at maximum.

The invention relates to the technical field of antiknock, and specifically relates to a terpene isopropyl carbonate gasoline antiknock. The gasoline antiknock of the invention has unique performance and purpose, and can be used as a novel functional compound. A octane number of gasoline can be raised with a small amount of the antiknock, so as to raise gasoline explosion-proof effect. The gasoline antiknock of the invention comprises raw materials of, by weight, 0.1-3.0 parts of tetraethylammonium bromide, 60-100 parts of alpha-pinene and 20-40 parts of isopropanol.

The invention discloses a preparation method of weather-resistant aluminum alloy wood grain transfer printing sections. The method comprises the steps of surface treatment on aluminum alloy base materials, electrostatic spraying and solidification of wood grain transfer printing paint and wood grain transfer printing; in the electrostatic spraying process of the wood grain transfer printing paint,the wood grain transfer printing paint is prepared from polyester resin, epoxy resin, acrylic resin, nano cellulose, precipitated barium sulfate, montmorillonite, nano titanium dioxide, fumed silica,calcium carbonate, nano-alumina, glycerin, tetraethylammonium bromide, triglycidyl isocyanurate, a leveling agent, benzoin, polyethylene wax, pigment and an ultraviolet absorber UV-0. The preparationmethod of the weather-resistant aluminum alloy wood grain transfer printing sections is simple in process and mild in condition, and the obtained aluminum alloy wood grain transfer printing sectionsare good in weather resistance and excellent in heat resistance.

The invention relates to a synthetic method for bisphenol S epoxy resin. The bisphenol S epoxy resin is synthesized through a phase transfer catalyst one-step method. The method comprises the following steps of throwing materials, wherein a certain amount of bisphenol S, a certain amount of epichlorohydrin and a certain amount of tetrabutylammonium bromide are added into a four-necked flask provided with a stirring paddle, a thermometer and a condenser pipe, and a catalyst accounting for 2-5% of the total amount of the raw materials is dripped into the flask; controlling reaction conditions, wherein temperature is raised to 80 DEG C-100 DEG C, and a synthetic reaction is carried out for 1-4 h; synthesizing a product, wherein after the reaction is finished, a reactant solution is placed for 20-24 h at the normal temperature to obtain a white precipitate product. The synthetic method has the advantages that tetramethylammonium bromide is replaced by tetrabutylammonium bromide, the melting point of tetrabutylammonium bromide is 100 DEG C-104 DEG C, the reaction temperature falls relatively, the reaction time is shortened, and the working efficiency is improved; meanwhile, the product yield of the synthetic method is high, and an epoxy value is large.

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.

Butadiene polymers are brominated using tetraethylammonium tribromide as the brominating agent. The bromination is performed in a solvent for the starting polymer and for the tetraethylammonium bromide that is formed as a reaction byproduct. The process proceeds easily under mild conditions. In some cases, a solution of the brominated polymer and the tetraethylammonium monobromide is produced; this solution separates into a layer that contains the brominated polymer and another layer that contains most or all of the tetraethylammonium monobromide salt. In other cases, the brominated polymer precipitates from the reaction mixture and is separated from the tetraethylammonium monobromide salt in that manner. This process therefore permits the tetraethylammonium monobromide reaction by-product to be separated easily from the brominated product, and allows aqueous washing steps to be reduced or eliminated.

The invention discloses a method for preparing photosensitive resin for solder mask ink. The method comprises the following steps: (1) carrying out a ring-opening reaction by taking acrylic acid and o-cresol formaldehyde epoxy resin as raw materials, and adding a polymerization inhibitor hydroquinone and a catalyst tetraethylammonium bromide into the reaction process, thus obtaining a prepolymer A; (2) performing chain extension by using a small molecular weight polyurethane prepolymer of which a polyether or polyester opposite terminal group is an NCO group, thus obtaining a prepolymer B; and (3) enabling the prepolymer A and the prepolymer B to react, and adding tetramethylbenzene and a catalyst dibutyl tin dialurate into the reaction process. Compared with the prior art, the method has the advantages that the production period is short, and the obtained photosensitive resin has the advantages of high-temperature resistance, yellowing resistance, high adhesive force and good insulating performance.

The invention discloses a preparation method of 1,3-propane sultone. The preparation method of the 1,3-propane sultone comprises the following steps of (1) under the existence of tetraethylammonium bromide, reacting 1,3-dichloropropane and sulfur dioxide in acetonitrile under the action of a constant current so as to obtain 1,3- propane sulfincacid lactone; (2) carrying out oxidation reaction on the prepared 1,3-propane sulfincacid lactone and an oxidizing agent in an organic solvent to obtain the 1,3-propane sultone. The preparation method of the 1,3-propane sultone provided by the inventionhas the advantages of higher yield, high purity, cheap and easy-to-get raw materials, mild reaction conditions, simple preparation process and the like.

The invention provides a preparation method of a nano hierarchical pore Beta molecular sieve, and belongs to the technical field of preparation of Beta molecular sieves. Compared with an existing steam-assisted xerogel conversion method for preparing the Beta molecular sieve, the method has the advantages that the process of obtaining xerogel through evaporation of synthetic gel is avoided, a solid-phase reaction mixture obtained after raw materials such as tetraethylammonium bromide and solid silica gel are subjected to ball milling is directly used for steam-assisted conversion, the synthesis steps are simplified, and the synthesis cost is reduced; meanwhile, due to the existence of the steam, the migration and dispersion of the solid-phase raw material are promoted, so that the nano hierarchical pore Beta molecular sieve with relatively small and dispersed nano particles and rich intracrystalline mesopores is prepared.