59 results about "N-pentanol" patented technology

A preparation method of a photocatalytic material by in-situ compositing zinc ferrite nano-rods with lamellar TiO2 includes the steps of performing solvothermal synthesis to main raw materials including zinc chloride, ferrous chloride tetrahydrate, ammonium oxalate monohydrate, oxalic acid dihydrate, tetrabutyl titanate, n-pentyl alcohol, hydrofluoric acid and ethylene glycol, thereby producing the photocatalytic material by in-situ compositing the rodlike zinc ferrite with the lamellar TiO2. The method is simple in process and is easy to control in reaction conditions. By means of visible light with [lambda] being 500 nm being a light source, the material is subjected to photocalaytic performance test, wherein the material is proved to have excellent photocalaytic performance under visible light by degrading organic toxic pollutants, such as bisphenol A, rhodamine B, humic acid and the like; the material has excellent capability of photocatalytically degrading the organic pollutants,and has excellent application prospect in the field of environmental protection and water pollution control and has extensive development potential in new energy development and utilization by solar energy.

The invention relates to a water-based auxiliary material capable of improving application properties of a water-based metal and a pearl finish and a preparation method of the water-based auxiliary material. The water-based auxiliary material comprises the following raw materials in percentages by weight: 10-35% of an aqueous polyurethane emulsion, 1-2.5% of an alkali swelling thickener, 0.2-1% ofan associative thickener, 0.05-0.5% of modified organic bentonite, 0.1-0.4% of an amine neutralizer, 1-5% of n-pentanol and 60-80% of deionized water. The water-based auxiliary material provided by the invention can be used for two continuous spraying of the water-based metal and the pearl finish in the environment with 90% or more of high humidity, and ensures that spraying of the water-based metal and the pearl finish during construction is uniform, has no sagging floating, uniform gloss, no color shading and a fine and smooth surface.

The invention relates to a reverse micelle dye extraction and recycling method for textile dyeing waste water. According to the method, a reverse micelle extraction method is used for extracting anionic azo dye in dyeing waste water, and the dye is transferred to a new water phase through re-extraction for dyeing again. The method has the advantages of simpleness in preparation process, low cost, environmental friendliness, high safety and easiness in industrial implementation; more importantly, both the dye and n-pentanol can be reused after the dye in the dyeing waste water is treated by the reverse micelle extraction technology, so that the dye reuse rate is high; on one hand, the environmental pollution problem caused by dyeing waste water discharge is solved; on the other hand, the method has remarkable cost advantage.

The invention discloses a reversed micelle supercritical CO2 dyeing system of a polyester-cotton blended fabric. The reversed micelle supercritical CO2 dyeing system is prepared from the following components in parts by weight: 5-25 parts of pentapolyethylene glycol monooctyl ether, 10-35 parts of n-pentanol, 0.01-0.20 part of active dye, 0.01-0.10 part of dispersed dye, 40-60 parts of carbon dioxide and 0.01-6.0 parts of distilled water. After the polyester-cotton blended fabric is put into a high-pressure container, the reversed micelle supercritical CO2 dyeing system has very good dissolving performance; the active dye can be used for dyeing cotton fiber components, and the dispersed dye also is used for dyeing polyester fiber components; and the cotton fibers are dyed in the absence of salt so that staining and specking phenomena of the fabric, caused by the dye, are greatly avoided. Furthermore, water is not used, and the reversed micelle supercritical CO2 dyeing system has the advantages of simple preparation process, environmental friendliness, high dyeing efficiency, good dyeing effect and the like. After dyeing is finished, CO2 fluid is changed into gas which can be recycled and repeatedly utilized.

The invention discloses a method of extracting beta-sitosterol from n-pentanol solvent crystallization. Under certain temperature, alcohol of 95 percent with 7 times the amount of crude sterols is used to carry out thermal dissolution on the crude sterols; impurities are filtered through micropores; filter liquor is pumped into a cold separation reactor be filtered after being cooled to 10 DEG C; a filter cake and the alcohol are added into a reactor according to the mass ratio of 3 : 1, fully mixed and filtered; n-pentanol and the filter cake with the mass ratio of 3 to 5 : 1 are added into the reactor, temperature then rises to 40 DEGC plus/minus 2 DEG C, and the n-pentanol and the filter cake are fully mixed keeping the temperature unchanged; the steps are repeated to ensure that content of the beta-sitosterol in the filter cake achieves above 90 percent, and then the filter cake is dried in vacuum, crashed, sieved and packaged into a finished product. Compared with other solvent methods, the invention has high product yield and low cost. Solvent mixture is used in other solvent methods, while the invention uses single solvent n-pentanol having easy recovery and simple operation.

The invention discloses a microemulsion-solvothermal technique of orthorhombic InOOH, which comprises the following steps: (1) preparation of microemulsion: a. sequentially adding microemulsion, mixture of n-hexane, n-pentanol or n-butanol, and surfactant into a beaker in a volume ratio of (18-22):(4-6):(8-12) under magnetic stirring conditions; b. adding 1-2ml of indium salt solution into the beaker, dropwisely adding 1.5-3ml of organic amine or inorganic alkali solution, continuing stirring for 12-18 minutes, and regulating the pH value to 8-11 to obtain an emulsion; and (2) preparation of orthorhombic InOOH by solvothermal technique: a. transferring the emulsion to a polytetrafluoroethylene vessel, closing the polytetrafluoroethylene vessel in a stainless steel high-pressure reaction kettle, heating to 180-220 DEG C to react for 18-20 hours, and cooling to room temperature; b. centrifuging the product, washing, drying the precipitate, and grinding to obtain the orthorhombic InOOH. The technique enhances the yield on the premise of lowering the optimum reaction temperature; and the prepared orthorhombic InOOH has excellent gas sensitivity.

The invention discloses a preparation method of a one-dimensional NiCo2O4 nanorod as a supercapacitor material. The preparation method comprises the following steps of (1) mixing n-pentanol, cyclohexane and cetyltrimethylammonium bromide, and stirring for 1 hour to obtain a mixture used as an oil phase; (2) taking a mixed liquid of a nickel nitrate and cobalt nitrate mixed water liquid and an oxalic acid water liquid as a water phase; (3) dropwise adding the water-phase liquid under the condition of continuously stirring the oil phase to form a water-in-oil system, reacting at normal temperature, ageing, separating, cleaning and drying to obtain a precursor; and (4) placing the precursor into a muffle furnace to heat, and preserving the heat to obtain a target product for preparing a supercapacitor pole piece. The preparation method of the one-dimensional nanorod is simple in process, easy to operate and capable of reducing the energy consumption; the particle size of the product is relatively narrow in distribution range and easy to control; the micro-nano NiCo2O4 has relatively high specific capacity and relatively good rate capability and cycle performance; and the preparation method is free of environment pollution in the preparation process, environment-friendly and suitable for large-scale production.

The invention relates to a preparation method of a high-adhesive-force functionalized water-soluble acrylic resin protective adhesive. The preparation method comprises the following step: by using a high-boiling-point alcohol as a solvent, carrying out solution polymerization at 110 DEG C to prepare the functionalized water-soluble styrene-methyl methacrylate-butyl acrylate-acrylic acid high-adhesive-force copolymer acrylic resin. By using the adhesive force of the copolymer acrylic resin as the main index, an orthogonal experimentation process is designed to determine the optimal preparation technique. The n-butanol/n-pentanol composite solution system is adopted, and the functional monomers methoxyethyl methacrylate and 1,4-butanediol dimethyl acrylate are commonly added, so the polymerization reaction has high stability. After the reaction is carried out for 1-4 hours, the ethanol and amine are added to obtain the high-adhesive-force functionalized water-soluble acrylic resin protective adhesive, thereby obviously enhancing the adhesive force of the traditional acrylic resin. Meanwhile, the high-adhesive-force functionalized water-soluble acrylic resin protective adhesive has the advantages of favorable film forming property, high brightness and high water solubility.

The invention discloses a method for preparing high-length-diameter-ratio calcium sulfate nanowires under low-temperature conditions. The method comprises the following steps: (1) preparing a sodium sulfate inverse microemulsion composed of n-pentanol, cyclohexane, sodium sulfate and cetyl trimethylammonium bromide; (2) preparing a calcium chloride inverse microemulsion composed of n-pentanol, cyclohexane, sodium sulfate and cetyl trimethylammonium bromide; (3) mixing the sodium sulfate inverse microemulsion prepared in the step (1) and the calcium chloride inverse microemulsion prepared in the step (2) to obtain a transparent uniform mixed microemulsion; (4) adding 4-12 vol% acetone or ethanol into the mixed microemulsion, and carrying out demulsification reaction; and (5) carrying out centrifugal separation on the demulsified mixed microemulsion, sequentially carrying out ultrasonic cleaning with acetone and ethanol, and drying to obtain the calcium sulfate nanowire product. The method has the advantages of simple technique, high efficiency and low cost, and implements continuous production. The prepared calcium sulfate nanowires have favorable solubilizing power, the length-diameter ratio is 20-400, and thus, the calcium sulfate nanowires can satisfy the market demands.

The invention provides a high efficiency liquid chromatography detection method for cis isomer in vitamin K2 medicines, which adopts a normal phase chromatography column stuffed by silica gel, and a flow phase formed by one low-polarity solvent selected from hexane, pentane, petroleum ether, cyclohexane, isooctane and heptane, and one high-polarity solvent selected from butyl ether, isopropanol, pentanol, n-pentanol, tetrahydrofuran, dichloromethane and ethanol. The high efficiency liquid chromatography detection method has high sensitivity and specialization, having simple operation, high repeatability, which is beneficial for controlling the quality of raw materials and agents in production.

The invention belongs to the technical field of preparation of organic compounds and relates to a method for catalytic synthesis of salicylate alkyl ester by using ionic liquid under microwave promotion. The method is carried out according to the following reaction formula and comprises the following steps: (1) adding salicylic acid and fatty alcohol into a microwave special reactor according to the amount-of-substance ratio of 1:2-3, further adding the ionic liquid, stirring and dissolving, wherein the reaction temperature is 85-115 DEG C, the rated power is 1360W, and the microwave radiation time is 15-30min; the fatty alcohol is methanol, ethanol, n-butanol, n-pentanol, n-hexanol or n-octanol; the ionic liquid is (PSPy) (HSO4), (PSPy) (H2PO4), (PSPy) (pTSA), (BSPy) (HSO4), (BSPy) (H2PO4) or (PSPy) (pTSA); and the amount-of-substance ratio of the ionic liquid to the salicylic acid is 0.4-0.6:1; and (2) cooling reactants to room temperature, adding ethyl ether for dissolving the salicylic acid which is not reacted and reaction products, and pouring and separating the ionic liquid; and placing in an air blowing drying box for drying for 6h at 90 DEG C, and being directly used for the next reaction. The synthesis process is simple and easy to operate, and the used ionic liquid has no environmental pollution and can be recycled.

The invention discloses a method for extracting alumina by using high-aluminum fly ash as a raw material, which specifically comprises the following steps: firstly, the fly ash is ground and activated, and then the activated fly ash is mixed and stirred with hydrochloric acid, filtered, and dissolved Add the oxidant solution to the eluate, and stir to obtain a mixed solution; mix and stir methyl isobutyl ketone, tributyl phosphate, n-octanol, 2-ethylhexanol, and n-pentanol evenly, then add diluent, continue Stir to obtain the extract; mix the prepared mixed solution with the extract, extract, and separate the organic phase and the water phase; add concentrated ammonia water to the water phase, stir the reaction at room temperature, filter, and obtain the precipitate with deionized Wash with water for 3-5 times, dry at 80°C, and place the obtained powder in a muffle furnace for roasting to produce alumina. The purity of the alumina obtained by the method disclosed in the invention is as high as 99.9%, and the dissolution rate of the alumina is also effectively improved.

The invention discloses a wastewater absorbing material for a chemical enterprise. The wastewater absorbing material is prepared from the following raw materials in parts by weight: 9 to 14 parts of sodium fatty alcohol polyoxyethylene ether sulfonate, 3 to 8 parts of sodium citrate, 4 to 8 parts of pectinase, 5 to 10 parts of aliphatic polyoxyethylene ether, 2 to 6 parts of carboxylate, 5 to 7 parts of ammonium oxide, 4 to 6 parts of hollow glass microspheres, 3 to 8 parts of diatomite, 4 to 9 parts of citric acid, 7 to 11 parts of wood fiber, 5 to 10 parts of graphite powder, 4 to 10 parts of nanometer calcium sulphate, 2 to 6 parts of titanate coupling agent, 2 to 5 parts of stearic acid, 4 to 8 parts of high-density polyethylene and 2 to 7 parts of n-pentyl alcohol. The wastewater absorbing material has the beneficial effects that toxic chemicals in wastewater can be well absorbed; meanwhile, the wastewater absorbing material is easy to clean; water quality can be well purified; the social benefit and the economic value are very good.

A composite additive for diesel comprises, by weight, 30-70 parts of fatty acid methyl ester, 15-30 parts of animal and vegetable oil, 5-40 parts of n-pentanol, 5-40 parts of n-octanol, 0.1-1.4 partsof alkylbenzene, 2-5 parts of copper sulfate, 2-6 parts of xylene, 0.08-0.8 part of diester of thiodipropionic acid and 0.2-0.6 part of polyisobutylene. A preparation method of the composite additivefor diesel comprises the following steps: sequentially adding above raw materials are sequentially added to the into a reaction kettle according to corresponding weight parts, performing stirring under condensation refluxing conditions for 10-30 min, and performing full and uniform mixing; and (3) standing the obtained material for 6-7 h to obtain the environmentally-friendly additive for diesel.The composite additive for diesel has the advantages of simple extraction process, low device requirements, increase of the yield by refluxing, shortening of the generation period by reducing the standing time, provision of a support for industrial synthesis, improvement of the diesel efficiency and reduction of exhaust emission.

Disclosed is a compound microemulsion cream for treating acne which comprises the following constituents (by weight ratio): (1) stearic acid 8-10%, cetyl alcohol 2-4%, glyceryl monostearate 2-3%, fluid wax 2-8%, (2) triethanolamine 3-5%, 2-6% of at least one selected from glycerin, propylene glycol, 1,3-butylene glycol, 10% of ethyl-p-hydroxybenzoate alcoholic solution 1%, (3) 8-12% of at least one of n-propanol, n-butanol and n-pentanol, (4) medicaments including Azithromycin 0.25-0.75%, spironolactone 0.2-0.4%, vitamine-A acid 0.025-0.05%, and balancing purified water.

The invention belongs to the technical field of trace element detection and particularly discloses a method of measuring the content of monovalent copper through liquid liquid extraction-GFAAS. The method includes S1) a step of making a standard working curve, and S2) a step of detecting the monovalent copper, namely a step of fully mixing a sample and trichloroacetic acid the concentration of which is 20% and the volume of which is the same as the volume of the sample, diluting with a glycine-NaOH buffer solution having a pH value of 9 according to different ratios according to the copper content of the sample, adding 1 mL of an n-pentanol solution of 2,2'-biquinoline with a concentration of 0.06% (w/w) into the solution mixture, fully mixing, allowing the mixture to stand and layer, obtaining an upper organic layer, and measuring the content of the monovalent copper by subjecting the upper organic layer to graphite furnace atomic absorption spectrometry. The method can be used for detecting the content of trace monovalent copper in biological samples, and is of great importance in research on organic body copper metabolism imbalance.

The invention discloses a synthesis method of high-purity phthalic acid n-pentyl isoamyl ester. The method is characterized in that pyridine is adopted as alkali, and phthalic anhydride is adopted tobe reacted with n-pentanol to obtain an intermediate I; heating backflowing reaction is conducted on the prepared intermediate I and thionyl chloride, and intermediate II is obtained through depressurizing and distilling; purified intermediate II is added to dichloromethane to be reacted with isopentanol at room temperature, triethylamine is taken as alkali, a target coarse product is obtained after a series of treatments of layering, extracting, washing, drying, filtering and the like are conducted on the reactant after reaction, finally fraction of 162-165 DEG C/2 mmHg is collected after depressurizing distillation is conducted to obtain the high-purity phthalic acid n-pentyl isoamyl ester. The purity of the prepared high-purity phthalic acid n-pentyl isoamyl ester can reach up to 99% orabove, and the yield is 60% or above.

The invention discloses a microsphere intelligent heat-insulated window membrane and a preparation method therefor. The method comprises the following steps: (1) adding nano vanadium dioxide particles into a reactor, and adding a solvent and a vinyl silane coupling agent into the reactor, so as to obtain nano vanadium dioxide particles, of which the surfaces are connected with vinyl groups; (2) pre-emulsifying the nano vanadium dioxide particles obtained in the step (1) with water, sodium lauryl sulfate and n-pentanol; then, dropwise adding a mixed solution of a monomer and trimethylolpropane trimethacrylate, which are in the ratio of 1: 1, into a reactor at a constant speed, and dropwise adding an aqueous solution of ammonium persulfate into reactor at a constant speed; and completing the dropwise adding, then, continuing to carry out heat preservation, carrying out cooling, and then, carrying out discharging and drying, thereby obtaining vanadium dioxide nanospheres; and (3) blending the vanadium dioxide nanospheres and a pressure-sensitive adhesive, and then, coating a PET (Polyethyleneglycol Terephthalate) base membrane with the blend. According to the window membrane disclosed by the invention, indoor temperature can be conditioned intelligently, the energy consumption of air conditioners is effectively lowered, and meanwhile, the contamination and damage to the surfaces of stuck objects caused by the migration of vanadium dioxide in the pressure-sensitive adhesive are avoided.

The object of the invention is to provide a method for preparing a fluorescent-yellow shell fabric. The method comprises the steps of firstly, carrying out cold plasma treatment on a dacron-cotton shell fabric by using a CGP-3 type plasma treatment instrument, then, putting 10-20 parts of natural fatty alcohol-polyoxyethylene ether, 12-30 parts of n-pentanol, 0.05-0.25 part of active fluorescent yellow dye FL, 0.01-0.15 part of disperse fluorescent yellow dye 10GN, 40-60 parts of supercritical CO2 and 0.01-6 parts of distilled water into a high-pressure vessel so as to prepare a reversed-micellar system, and finally, putting the dacron-cotton shell fabric subjected to the cold plasma treatment into the high-pressure vessel for dyeing, thereby obtaining the fluorescent-yellow dacron-cotton shell fabric. The fluorescent-yellow dacron-cotton shell fabric prepared by the method is bright in color and luster, high in color fastness, high in elasticity and good in mechanical properties and is soft and comfortable.

The invention discloses a kind of thermostable lubricant basic oil, which comprises the following substances in parts by weight: 10 to 30 parts of n-hexanol, 15 to 35 parts of plant oil, 10 to 20 parts of poly(alpha-alkene) synthetic oil, 1 to 7 parts of potassium sodium tartrate, 0.5 to 1 part of 2,6-ditertbutyl p-cresol, 1.5 to 4 parts of polyvinylpyrrolidone, 0.1 to 0.35 part of amino-alcohol complex titanate, 1 to 3 parts of polymethacrylate, 0.1 to 0.4 part of hydrophobic silica, 5 to 17 parts of n-pentanol, and 10 to 28 parts of n-octanol. The thermostable lubricant basic oil has the advantages that: the source of the raw materials and reagents is abundant, environmental pollution is small; the method can solve the shortage of petroleum resource at present, and meets the environment protection requirements at the same time; the prepared biological lubricant basic oil has an excellent viscosity-temperature characteristic and thermostability, and effectively solves the problem of bad viscosity-temperature characteristic and thermostability when the plant oil is solely used as the lubricant.