540 results about "Ethyl Ethers" patented technology

The invention discloses a lithium battery polymer solid electrolyte membrane capable of rapidly polymerizing at room temperature as well as a preparation method and application thereof, and belongs to the field of polymer electrolyte. The preparation method of the lithium battery polymer solid electrolyte membrane provided by the invention comprises the following steps: uniformly mixing polyethylene glycol methyl ether methacrylate and acrylonitrile according to a preset proportion to obtain a blended solution; sequentially adding lithium bis (trifluoromethanesulfonimide), divinylbenzene and benzoin diethyl ether into the blended solution, and uniformly mixing to obtain a precursor solution; and coating the precursor solution, and carrying out ultraviolet curing to obtain the lithium battery polymer solid electrolyte membrane. According to the lithium battery polymer solid electrolyte membrane provided by the invention, the voltage withstanding characteristic and the high ion conduction performance of the polymer electrolyte can be simultaneously improved, and the lithium battery polymer solid electrolyte membrane has a great gain on battery circulation and stability.

In one aspect, a demulsification additive includes a separation-promoting agent and a solvent. In another aspect, a demulsification additive includes a separation-promoting agent and a demulsifier or demulsifier intermediate. In another aspect, a method for separating crude oil from water includes introducing the water to the cmde oil, providing a demulsification additive that includes a separation-promoting agent, and contacting the water and the crude oil with the demulsification additive. In one embodiment, the separation-promoting agent is selected from the group consisting of dextran sulfate sodium salt, polyvinyl pyrrolidone functionalized with sodium salt of chloroacetic acid, poly(ethyleneglycol)-b(propyleneglycol)-b(ethyleneglycol) block copolymer, polyvinyl pyrrolidone functionalized with propyl sulfonate, sulfonated polyether ether ketone polymer, polyvinyl pyrrolidone functionalized with bromohexane, polyvinyl pyrrolidone functionalized with iodododecane, and combinations thereof.

The invention discloses application of small molecules containing diphosphonic acid groups in preparation of hydrophilic inorganic nanoparticles, and relates to the technical field of preparation of inorganic nanoparticles. The method comprises the following steps: dispersing inorganic nanoparticles coated with a hydrophobic organic compound on the surface into tetrahydrofuran, dropwise adding into a small molecule solution containing a diphosphonic acid group, uniformly mixing, and adding diethyl ether to prepare the hydrophilic inorganic nanoparticles. The method is simple and convenient to operate, mild in condition, rapid in conversion, high in conversion rate, energy-saving and efficient, and the converted nano-particle freeze-dried powder is stable in property and easy to store and transport and has certain popularization value. The problems that in the prior art, an inorganic nanoparticle hydrophilic modification method is complex, and conversion efficiency is low are solved.

The invention discloses a reaction buffer solution for improving endotoxin detection sensitivity of a recombinant tachypleus amebocyte lysate, a kit containing the reaction buffer solution and application of the reaction buffer solution. The reaction buffer solution comprises the following components: a Tris-HCl buffer solution, magnesium ions, sodium chloride, cane sugar, ethylene glycol diethyl ether diamine tetraacetic acid, a nonionic surfactant and cyclodextrin or a derivative thereof. The invention also discloses a preparation method of the reaction buffer solution and a kit containing the reaction buffer solution. When the reaction buffer solution or the kit is used for detecting the endotoxin of the recombinant tachypleus amebocyte lysate, the sensitivity of the recombinant tachypleus amebocyte lysate for detecting the endotoxin can be improved by one order of magnitude, the lowest detection limit can reach 0.0005 EU / ml, the reaction buffer solution or the kit has strong anti-interference capability and short reaction time, and the detection efficiency is greatly improved.

The invention discloses a recombinant C factor protein protective agent and application thereof. The recombinant factor C protein protective agent is prepared from the following components according to the final concentration of each component: 0.05 to 0.2 percent (w / v) of ProClin 300, 100 to 300 mM of sodium chloride, 1 to 10 mg / mL of bovine serum albumin, 5 to 20 percent (w / v) of trehalose, 10 to 50 percent (v / v) of glycerol, 0.1 to 0.5 percent (w / v) of tween-20 and 0.1 to 1 mM of ethylene glycol diethyl ether diamine tetraacetic acid with the pH value of 8.0. The invention also discloses an application of the recombinant factor C protein protective agent in refrigerated preservation of recombinant factor C protein. After the recombinant C-factor protein protective agent and the recombinant C-factor protein are mixed, the recombinant C-factor protein is prevented from being influenced by conditions such as aggregation, oxidation, freeze thawing and metal ion dependent inactivation, the stability of the recombinant C-factor protein in refrigeration storage is improved, and the activity retention rate of the recombinant C-factor protein after refrigeration storage for 12 months is greater than or equal to 90%; and the accuracy and sensitivity of endotoxin detection are maintained.

The invention relates to the technical field of repair materials, and particularly discloses an extracellular matrix fiber material as well as a preparation method and application thereof. The invention discloses a preparation method of an extracellular matrix fiber material. The preparation method comprises the following steps: taking animal tissues, and carrying out virus inactivation, decellularization and antigen removal, degreasing, drying, grinding and sterilization; the decellularization and antigen removal method comprises the following specific steps: sequentially soaking a sample with a surfactant solution for h; then, soaking treatment is carried out by adopting a salt-alkali solution which contains 0.05-3 mol / L of salt and has the pH value of 8-11; then carrying out soaking treatment by adopting a 0.1-1wt% enzyme solution; and in degreasing, one or more of normal hexane, trichloromethane, dichloromethane, methanol, ethanol, acetone, diethyl ether and ethyl acetate are used for soaking the sample. According to the technical scheme, the ECM powder particle material with high growth factor content is prepared.

The invention relates to the technical field of wastewater treatment, and provides a treatment method of glycine production wastewater. The treatment method of glycine production wastewater comprises the following steps: (1) rectifying glycine wastewater to recover methanol, adding dilute sulphuric acid to adjust the pH value to 2.5-3.0, stirring, and standing; (2) transferring the supernate into another container, adding a ZIF-8 modified material, stirring, standing, filtering, collecting filter residues and filtrate, washing the filter residues with diethyl ether, and recovering urotropine; and (3) evaporating and concentrating the filtrate under the vacuum condition of-0.08 MPa and the temperature of 50-60 DEG C, and separating out high-purity ammonium chloride crystals. According to the treatment method for the glycine production wastewater, the problem that an existing treatment method is poor in removal effect on urotropin in the glycine production wastewater is solved; and the treated glycine production wastewater reaches the discharge standard.

The invention discloses a preparation method of diiodosilane, and belongs to the technical field of material synthesis. The preparation method of diiodosilane comprises the following steps: adding a first iodine source and a second iodine source into a closed reactor in an inert gas atmosphere, and dissolving the first iodine source and the second iodine source in a solvent to form a uniform solution; and reducing the temperature, and adding liquid dichlorosilane. Raising the temperature to 30 to 80 DEG C and reacting; and after the reaction is finished, heating at reduced pressure, rectifying and purifying to obtain the high-purity electronic-grade diiodosilane. The first iodine source is lithium iodide, the second iodine source is at least one of sodium iodide or potassium iodide, and the solvent comprises at least one of acetonitrile, acetone, diethyl ether or ethanol. Lithium iodide and sodium iodide or potassium iodide are compounded, a specific solvent is matched, and a one-step method is used for testing, so that the input cost of raw materials is reduced, the experimental steps are simplified, the reaction rate of a reaction system can be improved, and the purity of a diiodosilane product is improved.

A concentrated laundry composition premix which is dilutable in water to form a laundry liquid composition, the viscosity which when formed from a dilution of five parts by volume water to one part premix and measured at 25° C. and at 106 s−1 is from 200 to 800 mPa·s., said premix comprising at least 10% wt. water, from 0.1 to 8% wt. ethoxylated polyol ester, and comprising from 5 to 70% wt. surfactant active excluding the ethoxylated polyol ester and where the ethoxylated polyol ester is not sorbeth stearate, wherein the surfactant comprises anionic surfactant and non-ionic surfactant in a weight ratio of from 50:50 to 1:99 and wherein the composition comprises from 0 to 5% wt. alkyl ether sulphate.

The invention belongs to the technical field of medical machinery, and particularly relates to an inflammation response type controllable degradation antibacterial body stent and a preparation method thereof.The preparation method of the antibacterial body stent comprises the following steps that PEG is heated in an oil bath in a vacuum and sealed environment and stirred for 1-3 h, the mixture is cooled to the room temperature, protective gas is introduced, and the antibacterial body stent is obtained. Sequentially adding lactide, glycolide and stannous iso-octoate into PEG (Polyethylene Glycol), continuously heating in the oil bath and stirring for 6-8 hours to obtain PEG-PLGA sol; adding the PEG-PLGA sol into dichloromethane for dissolving to obtain a dichloromethane solution of the PEG-PLGA, and adding an ice diethyl ether solution into the dichloromethane solution of the PEG-PLGA, so that the PEG-PLGA is separated out from the mixed solution. L-lysine (Lys) is grafted to a PEG-PLGA molecular chain end, a topological structure of Ag nanocrystals is formed on the surface, Lys-PEG-PLGA / AgCl particles are prepared, the antibacterial body stent is prepared through a 3D printing technology, the matching degree of the antibacterial body stent and an appendix focus in a patient is improved, and meanwhile controllable degradation is achieved with pH adjustment as an anchor point.

The invention provides a continuous production method of chloromethyl ethyl ether, and relates to the field of chloromethyl ethyl ether. The continuous production method of the chloromethyl ethyl ether comprises the following steps: depolymerization, first-stage gas-liquid reaction, second-stage microchannel reaction and third-stage pipeline reaction. The continuous production method of chloromethyl ethyl ether effectively avoids the defects of low hydrogen chloride throughput, long reaction time and low production efficiency in the batch-type reaction process, and overcomes the problems of low mass transfer efficiency, low reaction speed and high production energy consumption of heterogeneous reaction of paraformaldehyde, ethanol and hydrogen chloride gas; and on the basis of realizing continuous production of the chloromethyl ethyl ether, the purity and the yield of the continuously prepared chloromethyl ethyl ether are further improved.

The invention discloses a series of azeotropic or azeotrope-like compositions for solvent and single-phase or two-phase cleaning applications, and the formula of the azeotropic or azeotrope-like compositions mainly comprises trans-1, 2-dichloroethylene and hexafluoropropylene dimer; the composition may include at most one of 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether or 1, 1, 2, 3, 3, 3-hexafluoropropyl-2, 2, 2-trifluoroethyl ether, for example, 60 to 80% by mass of trans-1, 2-dichloroethylene, 20 to 40% by mass of hexafluoropropylene dimer or 60 to 65% by mass of trans-1, 2-dichloroethylene, or may also include any at most one of 1, 1, 2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether or 1, 1, 2, 3, 3, 3-hexafluoropropyl-2, 2, 2-trifluoroethyl ether, for example, 60 to 80% by mass of trans-1, 2-dichloroethylene, 20 to 40% by mass of hexafluoropropylene dimer or 60 to 65% by mass of 1, 1, 2, 2- 25 to 30% by mass of a hexafluoropropylene dimer; and 10 to 15% by mass of any one of HFE347 or HFE449. According to the present invention, the component capable of generating the azeotrope-like composition with the trans-1, 2-dichloroethylene component can inhibit the flash point of the trans-1, 2-dichloroethylene component so as to improve the safety performance of transportation, storage and use. The multi-component composition described by the formula can be used for high-efficiency degreasing of metal parts or high-efficiency cleaning of precise devices in the metal processing process, can also be used as a solvent, a degreasing agent, a desoldering agent or a drying agent and the like, and can meet multiple application requirements.

The invention discloses a low-temperature sodium metal battery electrolyte and a preparation method and application thereof, and belongs to the technical field of energy storage batteries. The low-temperature sodium metal battery electrolyte provided by the invention is prepared by dissolving sodium salt in ethylene glycol diethyl ether (EGDEE) and cyclopentyl methyl ether (CPME). The ethyl chain at the tail end of EGDEE in the electrolyte prepared by the invention allows more anions to enter the first solvation sheath of the hybrid solvent, so that the ionic conductivity at the ultralow temperature of-40 DEG C is greatly improved. Meanwhile, a novel anion-rich solvation structure can be spontaneously formed at low temperature, and the kinematic mechanics rate of Na < + > is increased. Meanwhile, two organic solvents with non-cyclic ether structures are adopted, so that the problem of easy ring opening in the prior art is solved, ultralow sodium nucleation overpotential is shown, and uniform sodium deposition can be realized, so that the composite material has excellent reversibility and cycling stability at room temperature and low temperature, has excellent electrochemical performance, and is suitable for industrial production. And the prepared sodium metal battery has a wide application prospect.

Propylene glycol 1-monomethyl ether 2-acetate, Acetic acid, Propionic acid, Water, A propylene glycol monomethyl ether acetate composition comprising: The content of the propionic acid is 2 ppm or more and 30 ppm or less based on 100% by mass of the propylene glycol monomethyl ether acetate composition, the sum of the contents of the acetic acid and the propionic acid is 5 ppm or more and 80 ppm or less with respect to 100% by mass of the propylene glycol monomethyl ether acetate composition; A propylene glycol monomethyl ether acetate composition, wherein the water content is 17 ppm or more and 250 ppm or less, based on 100 mass % of the propylene glycol monomethyl ether acetate composition.

The invention discloses an expandable rubber cable pipe plugging device and a preparation method thereof.The expandable rubber cable pipe plugging device is prepared from, by weight, 100 parts of EPDM rubber, 0.5-1.0 part of graphene, 0.2 part of silane coupling agent KH550, 10 parts of sodium carboxymethyl cellulose, 15 parts of sodium acrylate-acrylamide copolymer, 5 parts of polyvinyl alcohol, 8 parts of bentonite, 5 parts of expandable graphite and 3 parts of 4, 4 '-oxybisbenzenesulfonyl hydrazide foaming agent. The anti-aging coating is prepared from the following components in parts by weight: 1 part of zinc stearate, 2.5 parts of peroxide DCP, 2 parts of assistant crosslinker TAIC, 5 parts of zinc oxide, 1 part of stearic acid, 30 parts of fumed silica, 5 parts of modified nano montmorillonite, 20 parts of light calcium carbonate, 1.5 parts of anti-aging agent TMQ, 1 part of anti-aging agent 6PPD, 0.5 part of hindered phenol antioxidant 1076, 2 parts of UV absorbent UV-3292, 8 parts of naphthenic oil, 10 parts of microcapsules and 0.5 part of boron trifluoride diethyl etherate complex catalyst.

The invention relates to the technical field of food processing, and provides a debitterizing method of xanthoceras sorbifolia bunge kernels with high nutrient retention rate. The method comprises the following steps: S1, weighing a certain amount of xanthoceras sorbifolia bunge kernels, mixing the xanthoceras sorbifolia bunge kernels with water, soaking, and changing water during soaking; s2, after soaking is completed, ultrasonic treatment is conducted; s3, the shiny-leaved yellowhorn kernels subjected to ultrasonic treatment are taken out and mixed with an extraction solvent, extraction is conducted under the normal temperature condition, and the extraction solvent is a mixed solvent of isopropanol, diethyl ether and ethyl acetate; and S4, washing the extracted xanthoceras sorbifolia bunge kernels with clear water, and drying. According to the scheme, the whole particle shiny-leaved yellowhorn seed kernels are subjected to the steps of soaking, ultrasonic treatment, extraction, drying and the like, on the premise that the structure of the shiny-leaved yellowhorn seed kernels is not damaged and the integrity of the shiny-leaved yellowhorn seed kernels is kept, complex bitter components of the shiny-leaved yellowhorn seed kernels are removed, the taste and acceptance of the shiny-leaved yellowhorn seed kernels are improved, and nutritional ingredients such as protein and fat of the shiny-leaved yellowhorn seed

The invention discloses an imidazole polymer electrolyte membrane in an energy storage lithium battery, and a preparation method and application thereof, and belongs to the field of polymer electrolyte. The method comprises the following steps: reacting 1-ethylimidazole with n-butyl bromide to prepare brominated 1-ethyl-3-butylimidazole; the preparation method comprises the following steps: preparing 1-ethyl-3-butylimidazole bis (fluoromethane sulfonyl) imide salt from brominated 1-ethyl-3-butylimidazole and lithium bis (fluoromethane sulfonyl) imide; the preparation method comprises the following steps: uniformly mixing 1-ethyl-3-butylimidazolium bis (fluoromethane) sulfonimide salt, polyethylene glycol methyl ether methacrylate, acrylonitrile, lithium bis (trifluoromethane) sulfonimide, divinylbenzene and benzoin diethyl ether, coating and curing to obtain the imidazolium ionic liquid polymer electrolyte membrane. According to the imidazolium ionic liquid polymer electrolyte membrane, integration of triple functions of rigid framework-flexible transmission-interface stability is realized, and the electrical property and the mechanical property of the membrane are remarkably improved.

The invention relates to a preparation method of a super absorbent resin material, the resin is formed by polymerization of an acrylic monomer and konjac glucomannan, and the preparation method specifically comprises the following steps: adding konjac powder into water, adding a composite solvent and a dispersant Tween-80 to obtain a composite system 1, the composite solvent is composed of palm oil and any one of corn oil, soybean oil and rapeseed oil, and the dispersant Tween-80 is composed of a dispersant Tween-80 and a dispersant Tween-80. Continuously adding an initiator ammonium persulfate, initiating to obtain a compound system 2, then adding acrylic acid and NMBA, carrying out polymerization reaction, eluting the edible oil with diethyl ether and ethanol after the reaction is finished, drying, and crushing to obtain the super absorbent resin material. The acrylic monomer and the konjac glucomannan are polymerized to form the resin, the water absorption performance and the water retention performance of the material are effectively improved, the water absorption rate reaches 748.13 times, a small amount of ethyl alcohol is added on the basis to prepare the composite solvent, and the water absorption rate reaches 1018.96 times. The prepared resin material can be applied to hygienic products such as paper diapers and sanitary napkins.

The invention relates to the field of cosmetics, in particular to skin moistening oil containing a water-soluble active matter and a preparation method of the skin moistening oil. The skin moistening oil of the water-soluble active matter is prepared from the following raw materials in parts by mass: 0.1-1 part of a phase A, 3-15 parts of a phase B and 80-100 parts of a phase C, wherein the phase A is a water-soluble component, and the water-soluble component comprises one or more of deionized water, VC ethyl ether and nicotinamide; the phase B is a solvent, and the solvent comprises one or more of ethyoxyl diethylene glycol, 1, 2-pentanediol, isopentanediol and isostearic acid; the phase C is skin moistening oil, and the skin moistening oil comprises caprylic / capric triglyceride. The skin moistening oil product provided by the invention has the advantages of clear and transparent appearance, good fluidity, excellent stability, no need of adding a surfactant or a solubilizer, mildness, no irritation, simple process, controllable cost, good practical value and good application prospect.

The present invention is directed to methods for improving the therapeutic outcome of treatment with roflumilast. The therapeutic outcome is improved by consistent delivery and / or a longer plasma half-life of a topically administered roflumilast composition. The roflumilast composition preferably includes dicetyl phosphate, ceteth-10 phosphate, diethylene glycol I monoethyl ether, and / or hexylene glycol.

The invention provides a nomeline nasal-brain delivery preparation for transnasal region mucosa administration, and an auxiliary material mixture of the nasal-brain delivery preparation comprises 1) phospholipid, and 2) any one of diluent ethyl oleate, isopropyl myristate, sesame oil or castor oil; optionally, the auxiliary material mixture can also comprise 3) a dissolving agent such as ethanol or diethylene glycol monoethyl ether, the auxiliary material mixture is a non-aqueous system, and a solution prepared from the mixture of the two or three auxiliary materials can be absorbed by the nasal meatus olfactory mucosa after being administrated through the nasal region mucosa, can be quickly conducted to the brain olfactory bulb region along olfactory nerves and cerebrospinal fluid, and can be used for treating the brain olfactory bulb. The problems that the peripheral side effect is high due to poor brain targeting of the medicine, the medicine takes effect slowly and the like are solved.

The invention discloses an epoxy resin material for electronic plastic package of a radio frequency chip and a preparation method of the epoxy resin material. The preparation method comprises the following steps: firstly, carrying out alkylation reaction on dicyclopentadiene and phenol in the presence of a catalyst boron trifluoride diethyl etherate to synthesize dicyclopentadiene phenol resin, and epoxidizing the dicyclopentadiene phenol resin through epoxy chloropropane to obtain dicyclopentadiene epoxy resin DCPDDE; then, synthesizing a poly (dicyclopentadiene) linear polymer PDCPD by taking a Pd / Ag ionic compound as a catalyst, and then reacting the PDCPD with cysteamine sulfydryl to obtain dicyclopentadiene cysteamine PDCPDAm; and finally, mixing the DCPDDE, the PDCPDAm, the filler and the coupling agent, stirring, defoaming and curing to form the thermosetting resin with a three-dimensional network structure. The synthetic process is simple, the cost is low, the mobility and polarizability of molecules are limited due to high rigidity and low polarity of the obtained resin, transmission of a radio frequency chip under a high-frequency high-speed signal is ensured, stable operation in a complex working environment is ensured, reliable packaging protection is provided for the radio frequency chip, and the service life of the radio frequency chip is prolonged. And the thermal stability and the low dielectric property of the radio frequency chip are improved to the greatest extent.

The invention discloses a method for synthesizing 1, 2-bis (4-vinylphenyl) ethane, which comprises the following steps: S1, under the protection of nitrogen, taking 4-vinylbenzyl chloride as a solvent and a reactant, and reacting in the presence of iodine, magnesium metal and ethylene glycol diethyl ether to generate the 1, 2-bis (4-vinylphenyl) ethane; s2, after the reaction is finished, heating, and filtering to remove magnesium chloride while the solution is hot; and S3, cooling and crystallizing to separate out the product 1, 2-bis (4-vinyl phenyl) ethane, and filtering and separating the product to obtain mother liquor which can be directly used for synthesizing the 1, 2-bis (4-vinyl phenyl) ethane. The method has the beneficial effects that the solubility of the product 1, 2-bis (4-vinylphenyl) ethane in 4-vinylbenzyl chloride can be effectively adjusted by introducing the additive ethylene glycol diethyl ether (EGDE), magnesium chloride can be removed by directly heating and filtering while the solution is hot after the reaction, then the product can be obtained by cooling and crystallizing the mother liquor, the process of the method is shorter than that of the existing method, a washing step is omitted, and the method is suitable for industrial production. And subsequent magnesium sulfate mother liquor drying and harsh solvent dehydration steps are avoided.

Provided in the present disclosure are a solid electrolyte, a preparation method therefor and a secondary battery. The solid electrolyte comprises an oxide solid electrolyte and a shell layer coating the surface of the oxide solid electrolyte, wherein the shell layer comprises a monomer polymer and an ionic liquid. The monomer polymer is obtained by copolymerizing a first polymeric monomer and a second polymeric monomer, wherein the first polymeric monomer comprises one or more of ethylene glycol monomethyl ether acrylic acid, ethylene glycol monomethyl ether methacrylate, ethylene glycol monoethyl ether methacrylate and ethylene glycol monopropyl ether methacrylate; and the second polymeric monomer comprises a fluoroacrylate. F doping is firstly selected to modify LATP in the present disclosure, thereby significantly improving the ionic conductivity of the LATP, and widening the electrochemical window thereof, which is beneficial to improving the hydrophobicity thereof. The inner structure selected in the present disclosure is an LATP material doped with F, which can form better attraction to a C-containing group in the coating layer and cations of the ionic liquid, thereby improving the coating effect of the outer layer.

The invention provides an acrylic resin coating and a preparation process and application thereof, and belongs to the technical field of coatings, the acrylic resin coating comprises the following raw materials: 50-80 parts by weight of a water-based acrylic resin emulsion, 10-20 parts by weight of an inorganic filler, 1-3 parts by weight of a dispersant, 1-2 parts by weight of an antifoaming agent, 1-2 parts by weight of a leveling agent, and 10-30 parts by weight of water; wherein the water-based acrylic resin emulsion is prepared by reacting ethylene glycol ethyl ether, 3-perfluorobutyl propanol, a water-resistant modified SiO2 / ZrO2 composite material, an acrylic monomer and water; the inorganic filler is one or a mixture of more than two of titanium dioxide, calcium carbonate, talcum powder, kaolin and mica powder. The prepared acrylic resin coating is green, environmentally friendly, high in adhesive force and good in water resistance, weather resistance and wear resistance.

The invention relates to the technical field of organic functional material synthesis and mycotoxin removal, in particular to a magnetic covalent organic framework for adsorbing zearalenone and a preparation method and application thereof.The magnetic covalent organic framework is Fe3O4 (at) COF-VPBA and is prepared from 1, 3, 5-tris (4-aminophenyl) benzene, 2, 5-dimethoxy terephthalaldehyde, 4-alkenyl phenylboronic acid, boron trifluoride diethyl etherate, 2, 3-dichloro-5, 5-di (4-aminophenyl) benzene, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2, 5-dimethoxy terephthalaldehyde, 2 The catalyst is prepared from 2, 6-dicyano-1, 4-benzoquinone and nano ferroferric oxide through a four-component one-pot in-situ Povarov reaction. According to the method, the process is simplified, the defects of a fractional step method are avoided, due to specific covalent binding of boric acid groups and ZEN catechol hydroxyl groups, the adsorption capacity and the adsorption rate are remarkably superior to those of traditional and unfunctionalized adsorption materials, the adsorption rate still exceeds 90% after acetonitrile is eluted and regenerated and is repeatedly used for more than 5 times, and the comprehensive requirements of high selectivity, high adsorption capacity, easiness in separation and recyclability are met.

The invention belongs to the technical field of solid oxide fuel cells, and provides a cell preparation process for improving the carbon deposition resistance of a Ni-based composite ceramic fuel electrode when hydrocarbon fuel is used for power generation, and the method mainly comprises the following steps: (1) preparing a cell with macropores; (2) selecting an impregnation material; (3) preparing impregnation liquid; (4) dipping process; and (5) testing the whole battery. In the step (1), a pore-forming agent used for preparing the macroporous Ni-GDC supporting body comprises polymethyl methacrylate (PMMA), polyvinyl butyral (PVB) and polystyrene (PS), or a supporting body with a vertical pore channel is prepared through a phase conversion method; materials used in the step (2) mainly comprise CeO2 doped with Ni, Fe and Ru active metals, Cr, Mn and Ti-based perovskite materials doped with Ni, Fe and Ru active metals, and alkaline earth metal oxides Pr6O11 and MgO which have an adsorption effect on water; a dipping solvent in the step (3) is selected from isopropanol and deionized water or absolute ethyl alcohol, and a proper amount of polyvinyl butyral (PVB), triton X-100, hydroxyethyl phenetole and the like are added as surfactants; the fuel for the battery test in the step (5) can be water-passing methane or methane reformed gas. According to the present invention, the prepared cell support body and the Ni skeleton in the functional layer are uniformly coated, such that the damage to the cell conductive network due to the carbon deposition in the hydrocarbon fuel can be avoided, the stability of the solid oxide fuel cell during the power generation by using the hydrocarbon fuel can be effectively improved, and the fuel applicability of the cell can be expanded.

The invention discloses a thin-layer chromatography identification method for cinnamon and ginger in vitality-preserving granules, and belongs to the technical field of pharmaceutical analysis. Aiming at the problems of step-by-step detection, serious cinnamic acid tailing and dependence on toxic solvents in the existing method, the method comprises the following steps: dissolving vitality-preserving particles in water, carrying out ultrasonic treatment, extracting filtrate by using absolute ether, merging extract liquor, evaporating to dryness, and dissolving by adding ethyl acetate to obtain a test solution; preparing a cinnamon reference medicinal material solution and a cinnamic acid and 6-gingerol reference substance solution; a silica gel GF254 thin-layer plate is adopted, petroleum ether-normal hexane-ethyl formate-formic acid is used as a developing solvent for developing, and inspection is conducted under the ultraviolet light of 254 nm and the ultraviolet light of 365 nm respectively. Cinnamon and ginger can be synchronously identified, spots are clear and free of trailing, no toxic solvent exists, durability is high, cost is low, and an accurate and reliable basis can be provided for quality control of the vitality-preserving granules.

The continuous production heat pump assisted integrated extractive distillation device is adopted to realize high-purity separation and recovery of the diethyl ether-methyl formate-n-pentane azeotrope, and separation is realized by utilizing the characteristic that the extraction agent has great influence on the relative volatility of the diethyl ether-methyl formate-n-pentane azeotrope. The purity of the separated diethyl ether, n-pentane and methyl formate reaches 99.9% or above, high-purity recycling of the extraction agent can be achieved, the separation cost is greatly reduced, and the method is low in energy consumption and flexible to operate.

The present invention relates to an anti-allergy, whitening and freckle-removing composition and a preparation method thereof. The anti-allergy, whitening and freckle-removing composition is composed of the following components in mass fractions: 0.5-2% of Kalanchoe extract, 0.5-2% of Cornus controversa Hance extract, 0.5-2% of Yucca filamentosa extract, 0.5-2% of Chrysanthemum cinerariifolium extract, 1-3% of VC ethyl ether, 0.5-5% of arbutin, 0.1-2% of 4-butylresorcinol, 1-10% of niacinamide, 3-15% of humectant, 3-15% of emollient, 0.5-2% of penetrant, and the balance being water. The anti-allergy, whitening and freckle-removing composition is added with Kalanchoe extract, Cornus controversa Hance extract, Yucca filamentosa extract and Chrysanthemum cinerariifolium extract. Through the synergistic effect of the four extracts, the anti-allergy, whitening and freckle-removing composition has little irritation while maintaining excellent whitening and freckle-removing effects.