176 results about "N octane" patented technology

The invention discloses a crosslinking hyper branched polymer composite nanofiltration membrane as well as the preparation method thereof. The crosslinking hyper branched polymer composite nanofiltration membrane is prepared by taking an ultrafiltration membrane as a basement membrane and crosslinking hyper branched polymer as a selecting layer through hyper branched polymer and the interfacial polymerization of polybasic acid, polybasic acyl chloride, polybasic anhydride and polybasic amine; and the interfacial polymerization takes the mixed solution of water and ethanol as the water phase and n-hexane, n-heptane or n-octane as the organic phase. As the hyper branched polymer has the spheroidal structure, a plurality of nano-voids exist in the interior of the molecule, so as to enable the selecting layer of the crosslinking hyper branched polymer composite nanofiltration membrane to be looser, and leads the nanofiltration membrane to maintain high flux and retention rate under the lower operating pressure. The nanofiltration membrane can be used in the fields of medicament, foodstuff, environmental protection, etc. The composite nanofiltration membrane is applicable to the separation and the condensation of high valence ions, low valence ions, neutral particles, drugs, food additives, etc.

A mixture of propylene oxide and methanol is separated by liquid / liquid extraction using water and a hydrocarbon such as n-octane as extractive solvents.

The invention provides high-temperature expanded polymer microspheres and a preparation method thereof and belongs to expandable particles. The high-temperature expanded polymer microspheres are prepared from a thermoplastic resin shell body and a foaming agent packaged in the shell body, wherein an oil-phase composition composed of a polymerizable monomer and a crosslinking agent can be dispersedinto a water-phase dispersed composition; in the presence of the foaming agent, the polymer microspheres coated with the foaming agent are directly prepared through carrying out suspension polymerization reaction and coating the foaming agent in situ; the high-temperature expanded polymer microspheres are characterized in that the oil-phase composition contains the polymerizable monomer and the crosslinking agent, and also comprises a silane coupling agent; the foaming agent is a mixture of isopentane, isooctane and n-octane; the high-temperature expanded polymer microspheres provided by theinvention have the advantages of complete core-shell structure, uniform grain diameter distribution, high foaming agent coating efficiency, good heat resistance of a shell-layer polymer, relatively high initial temperature in an expansion process, relatively high highest expansion temperature and high foaming ratio, have a relatively wide foam stabilizing temperature range, and are suitable for being applied to a thermoplastic resin, rubber or thermoplastic elastomer foaming and processing technology.

The invention relates to a method for extracting platinum and rhodium in platinum and rhodium mixed liquid. The method comprises the following steps of: extracting the platinum the mixed liquid by taking n-octane as a diluting agent and N-butyl valnoctamide as an extracting agent prepared from solutes and adopting a first-stage extraction method; removing impurities from the rhodium and the impurities contained in raffinate through a cation exchange column to obtain a rhodium solution. According to the method, the platinum is extracted and separated by adopting the first-stage extraction method, and the extraction ratio E of the platinum is more than or equal to 99.5%; the rhodium is extracted by adopting a cation exchange column method. The method disclosed by the invention can be used for efficiently separating the platinum contained in the platinum and rhodium mixed liquid and ensures the extraction purity of the platinum and the rhodium.

A method for producing jet-range hydrocarbons includes passing a stream comprising renewable C4 olefins to an oligomerization reactor containing a zeolite catalyst to produce an oligomerized effluent, separating the oligomerized effluent to produce a jet range hydrocarbon stream and a recycle stream comprising C8 olefins, and passing at least a portion of the recycle stream to the oligomerization reactor. A first at least about 10% of the jet-range hydrocarbon stream hydrocarbons boil between n-octane and n-undecane and wherein a second at least about 10% of the jet-range hydrocarbon stream hydrocarbons boil between n-dodecane and n-pentadecane.

The invention provides a preparation method for a hierarchical porous ZSM-5 molecular sieve. According to the preparation method for the hierarchical porous ZSM-5 molecular sieve, in a synthesis system of a silicon source, an aluminum source, an organic structure directing agent and deionized water, a proper amount of cationic surfactant cetyl trimethyl ammonium bromide is added to serve as a softtemplate agent, full stirring and uniform mixing are carried out so as to form molecular sieve synthesis sol-gel, then the sol-gel is dried so as to obtain dry glue, and then the hierarchical porousZSM-5 molecular sieve is prepared by using a dry glue conversion method. The preparation method for the hierarchical porous ZSM-5 molecular sieve has the advantages of being mild in preparation conditions, simple, convenient to use, high in efficiency, free of emission of synthetic waste liquid, environmentally friendly and capable of realizing industrial production, the good catalytic performanceis realized in the reaction of preparing the low-carbon olefins through catalytic cracking of n-octane, and therefore, remarkable environmental benefits and economic benefits can be achieved, and theindustrial production prospect is good.

The invention provides a method for preparing diesel components by catalytic hydrodeoxygenation of vegetable oil, which prepares high heat-value alkane by catalytic hydrodeoxygenation of the vegetable oil. The method comprises the following reaction steps: adding the vegetable oil, barium sulphate-loaded palladium serving as a catalyst, as well as a solvent selected from n-hexane, n-heptane, n-octane and dodecane to a reactor; supplying hydrogen; allowing reaction pressure to be between 1 and 10 MPa; stirring and heating at 230 to 320 DEG C; performing reaction for 3 to 12 hours and then stopping the reaction; allowing the catalyst and liquid products to automatically separate after the obtained product is cooled to room temperature; and obtaining the diesel components containing high heat-value alkane without centrifugation, filtration and other complicated post treatment. The method has the advantages of simple preparation process, low reaction temperature, low solvent consumption, no cracking of carbon chain parts of the oil, high combustion heat value of target products and recyclable catalyst.

The invention relates to a thermally-expandable polymer microsphere for polyvinyl chloride resin foaming and a preparation method thereof, and belongs to the field of expandable particles. The thermally-expandable polymer microsphere consists of a thermoplastic resin shell and a foaming agent encapsulated in the shell; an oil phase composition composed of a polymerizable monomer and a crosslinkingagent is dispersed in an aqueous phase dispersion composition; and in the presence of the foaming agent, the foaming agent is coated in situ through a suspension polymerization reaction to directly prepare the polymer microsphere coated with the foaming agent. The thermally-expandable polymer microsphere is characterized in that the oil phase composition comprises a silane coupling agent in addition to the polymerizable monomer and the crosslinking agent, and the foaming agent is a mixture of isopentane, isooctane and n-octane. The invention provides a thermally-expandable polymer microspherewhich has the advantages of complete core-shell structure, uniform particle size distribution, high foaming agent coating efficiency, good heat resistance of a shell polymer, high initial temperatureduring expansion, high maximum expansion temperature, high foaming ratio, and wide foam stabilizing temperature range, and is special for foaming polyvinyl chloride resin.

The invention provides a method for preparing polystyrene-divinylbenzene microspheres 60 to 100 microns in diameter, and a use thereof for blood purification. Polymer microspheres prepared are synthesized by swelling and polymerizing seed emulsion. Seeds microspheres used are large-diameter linear polystyrene microspheres 6 to 8 microns in diameter. Monomer and cross-linking agent used are styrene and divinyl benzene respectively. Pore-forming agents used are toluene, ethylbenzene, o-phthalic acid lipids, n-heptane, n-octane, n-heptanol or a mixture of the substances. The polymer microspheres prepared are used to remove bilirubin during blood purification. The microspheres prepared have the characteristics of cross-linked multihole, high specific surface area (between 100 and 1,000 m<2> / g), stable mechanical strength, high yield of preparation process, use for blood purification and bilirubin adsorption, small pressure drop of adsorption column, high removal rate and the like.

The invention discloses a preparation method of N, N'-bis(2, 2, 6, 6-tetramethyl-4-piperidyl)-1, 3-benzenedicarboxamide which is represented by formula (I). The preparation method comprises following steps: (1) 2, 2, 6, 6-tetramethyl-4-aminopiperidine and m-phthalyl dichloride are taken as raw materials, and are reacted in an anhydrous organic solvent at a temperature of -5 to 25 DEG C until complete precipitation is realized, reaction liquid is filtered, and the filter cake is washed with the anhydrous organic solvent and dried so as to obtain an intermediate (II), wherein the anhydrous organic solvent is one selected from n-heptane, n-octane, petroleum ether, acetone or butanone; (2) at room temperature, the intermediate (II) is mixed uniformly with water, sodium hydroxide solution is added for neutralization, the mixture is filtered and washed with water so as to obtain a filter cake, and the filter cake is dried so as to obtain N, N'-bis(2, 2, 6, 6-tetramethyl-4-piperidyl)-1, 3-benzenedicarboxamide represented by formula (I). The preparation method possesses advantages of high product quality, simple operation technology, convenient operation process and high raw material utilization rate.

The present invention relates to composite material technology, and is especially preparation process of functional high molecular composite micro ball with quick magnetic field response. The preparation process includes the first coprecipitation to prepare superparamagnetic nanometer Fe3O4 particle with renselin and oleic acid modified surface and in-situ dispersing in n-octane to form oil base magnetic fluid; and the subsequent fine emulsion process to prepare composite superparamagnetic high molecular composite micro ball with carboxylated surface.The composite micro ball of the present invention has magnetic material content up to 78 wt %, average particle size of 41-185 nm and surface carboxy radical density of 0.0587-0.251 mmol / g, and may be applied in cell separation, target medicine and other biomedicine fields.

Micro-wave synthesis of putting N-methyl imidazole or pyridine and bromic ether, bromo-n-butane, bromo-n-hexane, bromo-n-octane or bromo-cetane into reactor, reacting at 20-150 degree and 100W-500W for 2-30mins, washing by acetic ether, drying to obtain bromo-alkyl-imidazolium or bromo-alkyl-pyridinium, microwave reacting bromo-alkyl-imidazolium or bromo-alkyl-pyridinium with tetrafluoroborate salt or toluene-p-sulfonic acid or amido-sulfonic acid in deionized water or acetone, dripping into tetrafluoroborate salt, filtering while removing water to obtain the ionic liquid, or micro-wave reacting bromo-alkyl-imidazolium or bromo-alkyl-pyridinium with hexafluorophosphate in deionized water or acetone, and filtering while removing water to obtain the final product. It's simple and efficient, has short reactive time and gentle reactive environment.

This invention relates to a method for rapidly preparing calcium tungstate mesorystals. The method adopts microemulsions as the media, and can obtain the product with a very short reaction time. The method comprises: adding n-octane, n-butanol and cetyl trimethyl ammonium bromide into the same amount and concentration of calcium salt aqueous solution and sodium tungstate aqueous solution, respectively, to obtain two transparent microemulsions, rapidly mixing the two microemulsions within a certain temperature range, stirring for 10 min, and terminating the reaction to obtain calcium tungstate mesocrystals. The method has such advantages as simple process, low cost and rapid reaction. The size distribution of the obtained calcium tungstate mesocrystals is uniform.

The invention relates to an extraction method of benzothiophene, belonging to the field of extraction and separation. The extraction method of the benzothiophene comprises the step of enabling an extraction agent to be in contact with a mixture, wherein the extraction agent is a deep-eutectic solvent constituted by tetra-n-butylammonium chloride and propanoic acid according to the molar ratio of (1: 1)-(1: 5); and the mixture is constituted by the benzothiophene and n-octane. The extraction method disclosed by the invention has the advantages of high extraction efficiency, strong selectivity, capability of deeply removing the benzothiophene to below 10ppm, mild operation conditions and environmental friendliness.

The invention discloses an adhesive monomer and a method for improving adhesion strength between dental zirconia and resin. The adhesive monomer is prepared from 1, 5-cyclooctadiene by performing epoxidation, ring-opening reaction, redox, exterification and the like, the main chain of the adhesive monomer is a n-octane carbon chain with one end of acrylic ester and the other end of phosphate ester, the forth position and the fifth position on the carbon chain are respectively connected with a R group which represents hydroxyl, sulfydryl or carboxyl, and the adhesive monomer has the structural formula shown in the description. The adhesive monomer helps to improve the adhesion strength between dental zirconia ceramic and resin, has the same improving effect with common 10-MDP-containing zirconia primer coating products in current market, has relatively good biological compatibility, is qualified in cytotoxicity tests, and has important application value during tooth repairing processing.

The present invention discloses a strong lipophilic long chain Alpha-olefin amphiphilic graft copolymer and a preparation method thereof. The present invention takes a long chain Alpha-olefin-p-methylstyrene copolymer as the matrix; the polyethylene glycol with one hydroxyl terminal is grafted on the chain of the copolymer by a bromination reaction and an etherification reaction. A molecular structure (such as the grafting density and graft length) of the graft copolymer can be effectively controlled by the method. The preparation method of the strong lipophilic long chain Alpha-olefin amphiphilic graft copolymer which is related by the present invention has simple process and convenient operation, the graft copolymer can be fully dissolved in the non-polar solvent (such as, n-octane, petrol, diesel, etc.) under the room temperature, the present invention has the broad application prospect in emulsible oil, cosmetics, inverse emulsion polymerization, non-polar membrane surface modification and other fields.

The invention belongs to the field of extraction and separation, and in particular relates to a method for extraction and removal of benzothiophene. The hydrogen bond acceptor, hydrogen bond donor and metal chloride are synthesized into a deep eutectic solvent with a molar ratio of 4:1:0.05, and a n-octane solution with an initial concentration of benzothiophene of 200-2500ppm is prepared, and the deep eutectic solvent Mix with the n-octane solution of benzothiophene at a mass ratio of 0.2:1 to 5:1, stir at 20°C to 75°C for 5 to 30 minutes, and stir at a speed of 600 to 1200rpm, mix well and let stand to separate layers. The synthesis process of the deep eutectic solvent prepared by the invention is simple and high-purity products can be obtained without introducing other organic solvents, and the atom economy reaches 100%. The extraction method is simple, the extraction efficiency is high, the operating conditions are mild, the environment is friendly, and the deep removal of benzothiophene can reach more than 85%.

The invention relates to a suspension polymerization preparation method of a polystyrene-coated ferriferrous oxide composite particle. The method comprises the following steps: placing a n-octane solution in a water bath, adding a mixed solution of ferrous sulfate and ferric chloride, then adding sodium oleate and ammonia water to carry out reactions to obtain oil-soluble ferriferrous oxide; mixing the obtained ferriferrous oxide, polystyrene, and benzoyl peroxide under supersonic waves to obtain a mixed solution, adding a dispersant and deionized water, carrying out reactions for 4 to 6 hours at a temperature of 90 DEG C, washing, separating, and drying so as to obtain the polystyrene-coated ferriferrous oxide magnetic composite particles. The preparation method has the advantages of simple operation and mild reaction conditions. The obtained magnetic composite particles are evenly dispersed, are stable, and thus have a good application prospect.

The invention discloses a detection method of residual stress, and particularly relates to detection on a plastics product. The detection method comprises the steps of immersing a product to be detected in a corrosion solution, and taking the product to be detected out and detecting whether a residual stress reaction occurs when the immersing time reaches an immersing time set value, wherein if the residual stress reaction does not occur, the product to be detected is qualified. The corrosion solution can be prepared by mixing carbon tetrachloride and normal octane according to the volume ratio of 1:1, or by mixing methylbenzene and normal propyl alcohol according to the volume ratio of 1:3; the immersing time is obtained by processing immersing time within which the stress reaction occurs during pre-detection on products in the same batch, and under the residual stress reaction, the surface of a plastic product cracks or powdery particulate materials are formed on the surface of the plastic product due to corrosion.

The invention discloses a preparation technology of a nano-Fe3O4-V2O5-Au-doped poly-naphthylamine film modified netted glassy carbon electrode. The technology comprises dissolving FeCl3 and NaAc in glycol, drying to obtain particles A; mixing cetyl trimethyl ammonium bromide, n-octane and n-butanol, dividing into two parts, adding ammonium metavanadate and deionized water into one part, stirring to obtain a microemulsion A, adding dilute sulfuric acid into the other part, stirring to obtain a microemulsion B; mixing the microemulsion A and the microemulsion B, centrifuging, washing, roasting to obtain particles B; mixing the particles A and the particles B, adding polyvinyl pyrrolidone, an HAuCl4 solution and the deionized water, shaking and centrifuging, adding washed and dried product, sodium dodecyl benzene sulfonate and naphthylamines into the deionized water and mixing, adding ammonium persulfate, shaking and centrifuging, dissolving the washed product into acetone, adding pre-treated netted glassy carbon, shaking, taking the product out, and drying to obtain the nano-Fe3O4-V2O5-Au-doped poly-naphthylamine film modified netted glassy carbon electrode.

The invention relates to a synthesis method of meropenem, which particularly comprises the following reaction routes: dissolving a compound of the formula (IV) and a compound of the formula (V) into an organic solvent, and then performing a condensation reaction under the action of condensing agent to obtain a compound of the formula (II); dissolving the compound of the formula (II) and a compound of the formula (VI) into methyl benzene, acetic ether or tetrahydrofuran, and then performing a reaction under the action of alkali to generate a compound of the formula (III); dissolving the compound of the formula (III) into cyclohexane, n-octane, the methyl benzene or dimethyl benzene, and then performing a Wittig cyclization reaction under the action of an organic phosphor agent to obtain a compound of the formula (VII); dissolving the compound of the formula (VIII) into a solvent consisting of one of or a plurality of methanol, ethanol, tert-butyl alcohol, isobutanol, isopropanol, the tetrahydrofuran, dioxane, acetone, dichloromethane, chloroform and water, and performing hydrogenation under the action of a palladium catalyst to remove allyl and obtain a target product (I). The synthesis method of the meropenem has the advantages of high yield, mild reaction condition, little environmental pollution, and brief routes.

The invention provides a cold accumulation material, which is prepared from at least one of a first group of substances, a second group of substances, a third group of substances, a fourth group of substances and a fifth group of substances, wherein the first group of substances comprise n-nonane, n-octane and hexamethyl disiloxane; the second group of substances comprise p-cymol and decamethyl tetrasiloxane; the third group of substances comprise o-cymol, vinyltoluene, ammonia and R1233ze(E); the fourth group of substances comprise 1,1,2,2,3-pentafluoropropane, 2H,3H-perfluoropentane, butylbenzene and octamethyl trisiloxane; the fifth group of substances comprise tetrafluoromonochlorethane, 1,1,1,3,3,3-hexafluoropropane, propanone, perfluoroethane and pentafluoroethane. Through the cold accumulation material, according to a different required temperature zone, the cold accumulation material which is prepared from a different monomer or a plurality of substances can be selected, can be used for meeting the demand of the temperature of subzero 60 to subzero 100 DEG C, and adapts to a plurality of scenes. In addition, the invention also provides a cold accumulator and a cold accumulation type refrigeration device.

The invention relates to a method for extracting benzothiophene by utilizing a deep co-melting solvent composed of tetrabutylammonium chloride and polyethylene glycol. Tetrabutylammonium chloride and polyethylene glycol form the deep co-melting solvent in mole ratio of 1:2, the deep co-melting solvent is mixed with a normal octane solution with the benzothiophene concentration of 200-1600ppm in mixing mass ratio of (0.5-2):1, stirring is carried out for 5-60 minutes at the temperature of 20-50 DEG C and a speed of 600-1000rpm, fully mixing and then standing and layering are carried out, and the benzothiophene concentration of a normal octane layer is detected by adopting a gas chromatographic method, so that extraction rate of benzothiophene is calculated. The method for extracting the benzothiophene by utilizing the deep co-melting solvent composed of tetrabutylammonium chloride and polyethylene glycol has the characteristics of good solubility, mild operating conditions and environmental friendliness and is an efficient and green benzothiphene extraction method.

The invention discloses an ink for 3D digital ink-jet ceramic tiles. The ink comprises the following components in percentage by weight: 18 to 40 percent of colorant, 12 to 17 percent of fatty alcohol-polyoxyethylene ether, 0.5 to 5 percent of n-butyl alcohol, 25 to 35 percent of n-octane, 20 to 30 percent of zirconium oxychloride, 15 to 25 percent of ammonia water and 1 to 4 percent of solid. According to the ink for the 3D digital ink-jet ceramic tiles, the product produced by using the ink has good definition, three-dimensional quality and a graceful mirror effect, can highlight the neatness and brightness of an entire space, and has the characteristics of durability, skid prevention, dust prevention, easiness for cleaning and the like.

The invention provides a method for synthesizing a Cu-BTC material through a solvothermal method by utilizing a deep-eutectic solvent as a solvent. The Cu-BTC material prepared by virtue of the method is capable of effectively adsorbing dibenzothiophene in a normal octane solvent of dibenzothiophene; the Cu-BTC material is high in adsorptive property, strong in selectivity and good in deep desorption degree of dibenzothiophene; after being cleaned and dried, the Cu-BTC material which adsorbs dibenzothiophene can be recycled; the recycling operation is simple, no toxic organic solvent is used, and the operation conditions are mild and environmentally friendly.

The present invention relates to chemical separation process, and is especially one pressure swing adsorption process for extracting n-heptane and co-produced n-octane. N-heptane and co-produced n-octane are extracted through one combined multiple tower heating pressure swing adsorption and rectifying separation process. The advanced technological process is simple, low in power consumption and high in automation, and can produce high purity n-heptane while producing high purity n-octane.

The invention relates to a method for transferring oil phase quantum dots to an aqueous phase, and belongs to the technical field of quantum dots. The method comprises the following steps of: dispersing the quantum dots in an organic solvent, adding a macromolecular C, stirring, adding ethanol, stirring, and adding deionized water; and evaporating the organic solvent and the ethanol, and thus obtaining quantum dots A uniformly dispersed in water. The quantum dots A are Au, Ag, In2O3, Fe2O3, CdS, CdSe, CdTe or CdSe / ZnS; the organic solvent is n-hexane, toluene, cyclohexane, n-octane, dichloromethane, trichloromethane, pyridine or dichlorotoluene; and the macromolecular C is polyethylene, polyvinyl chloride, polyvinyl pyrrolidone, polypropylene, polyacrylic acid, polyvinyl alcohol, polyethylene glycol, polyethylene methyl ester, polyacrylamide, polyoxyethylene or polyurethane. The method is simple and general, and the oil phase quantum dots can be transferred to the aqueous phase.

The invention relates to a method for extracting a p-xylene mixture in n-octane by using an ionic liquid [Bmim][FeCl4]. The method comprises the following steps: (1) preparation of [Bmim][FeCl4]; (2) separation of n-octane and p-xylene mixture: S1. preparing a mixed solution of n-octane and p-xylene in different mole ratios in a balance kettle; and S2. adding the ionic liquid which is equal to the total mass sum of the n-octane and p-xylene, stirring at uniform speed, and standing at a certain constant temperature for stratification. The quantitative analysis on the stratified liquid phases by gas chromatography detects that the ionic liquid has the advantages of favorable absorption effect on p-xylene, high selectivity and obvious separating effect. The method is simple and easy to implement, has the advantage of wide raw material application range, can be performed at normal temperature, and lowers the energy consumption.

The invention relates to a process for decreasing coking of convection sections of cracking furnaces and is mainly used for solving the problem that the high polymers carried by the diluted steam cannot be removed in the prior art. The process for decreasing coking of the convection sections of cracking furnaces comprises the following steps: cracking gas generated by a cracking furnace enters a bath tower after undergoing quenching and oil washing; the process water of the bath tower enters a process water stripping tower; the water of the process water stripping tower enters a process water extraction tower to contact an extraction agent; the water of the process water extraction tower enters a diluted steam generator to generate diluted steam; and the diluted steam enters the cracking furnace. The extraction agent is selected from at least one of n-pentane, n-hexane, n-heptane, n-octane, n-nonane, isopentane, isohexane, cyclopentane, cyclohexane, benzene, methylbenzene and xylene. According to the technical scheme, the process has the effect of preferably solving the problem and can be used for the convection sections of cracking furnaces.

The invention provides an automobile exhaust cleanser. The cleanser is prepared from raw materials in parts by weight as follows: 5-10 parts of ethanol, 10-15 parts of methanol, 1-3 parts of ethyl acetate, 1-5 parts of ethylene glycol, 1-3 parts of n-octane, 5-10 parts of fatty alcohol, 1-3 parts of lauryl alcohol, 1-3 parts of cyanuric acid, 3-5 parts of monoethanolamine, 1-3 parts of diglycolamine, 3-5 parts of diethanol amine, 1-3 parts of diisopropanol amine, 5-10 parts of triethanolamine, 1-3 parts of N-methyl-diethanol amine, 1-3 parts of dimethyl sulfoxide, 3-8 parts of zirconium dioxide, 1-5 parts of cerium dioxide, 1-5 parts of lanthanum oxide, 1-3 parts of palladium and 20-30 parts of activated carbon. The automobile exhaust cleanser enables oil mist to have enough oxygen for thorough burning while clearing automobile exhaust, oil consumption is reduced, oil mist sprayed into a combustor can explode instantly, and power is enhanced.