90 results about "Aluminium chloride hexahydrate" patented technology

An anhydrous composition of dry aluminum chloride hexahydrate in Castor Oil CP or in Dehydrated Castor Oil particularly suitable for the treatment of localized hyperhidrosis.

The invention discloses an aluminum hydroxide / magnesium-based hydrotalcite multiphase-based material and a preparation method for crystal whiskers thereof. The aluminum hydroxide / magnesium-based hydrotalcite multiphase-based material comprises magnesium ion solution prepared by mixing magnesium sulfate and magnesium nitrate in a molar ratio of 1:1, aluminum ion solution prepared by mixing aluminum chloride hexahydrate and sodium metaaluminate in a molar ratio of 1:1, sodium hydroxide and sodium carbonate. The preparation method comprises the following steps of: dissolving the magnesium sulfate and the magnesium nitrate into deionized water, dissolving the aluminum chloride hexahydrate and the sodium metaaluminate into the deionized water, and mixing to prepare aqueous solution of magnesium ions and aqueous solution of aluminum ions respectively; adding the sodium carbonate into the aqueous solution of magnesium ions and the aqueous solution of aluminum ions to obtain mixed solution; and adding sodium hydroxide solution into the mixed solution to obtain suspension of aluminum hydroxide / magnesium-based hydrotalcite, and precipitating, washing and aging the suspension to obtain white crystal whiskers of the aluminum hydroxide / magnesium-based hydrotalcite multiphase-based material. The preparation method has the characteristics of simple and reliable preparation process, no pollution, wide sources of raw materials and low preparation cost.

The invention discloses a method for preparing a graphene oxide-alumina composite aerogel, wherein the method comprises the following steps: taking graphene oxide, adding the graphene oxide into a dispersing solvent, carrying out ultrasonic treatment for 1 h in an ultrasonic cleaning instrument, separating with a low speed centrifuge, filtering out a lower precipitate, and taking an upper solution; taking the solution, adjusting the pH of the solution with dilute ammonia water and dilute hydrochloric acid, then adding aluminum chloride hexahydrate, and carrying out a reaction; and after the reaction in the second step is finished, cooling to room temperature, carrying out magnetic stirring for 0.5 h, then transferring the mixed solution into a polytetrafluoroethylene hydrothermal kettle, keeping for 12 h at the temperature of 180 DEG C, after the reaction kettle is cooled to room temperature, taking out a cylindrical product, washing the cylindrical product with alcohol and water for two to three times respectively, and drying the product for 12 h in a freeze dryer, to obtain the graphene oxide-alumina aerogel composite material. The ultra-light composite material prepared by the method has rich pore passage structure, can give full play to the excellent electrical conductivity of graphene, and has wide application prospect.

The invention relates to a method for preparing alumina aerogel. Firstly, methyl acetoacetate and polyvinyl alcohol are used as raw materials; concentrated sulfuric acid is used as a catalyst; throughester exchange reaction, acetoacetic acid groups are grafted on polyvinyl alcohol to prepare a macromolecule complexing agent; secondly, massive alumina aerogel with high density, high intensity, lowshrinkage rate, high porosity, high specific surface area and concentrated hole diameter distribution is obtained through preparation by using aluminium chloride hexahydrate as an inorganic phase precursor, using the macromolecule complexing agent as an additive, using deionized water as a solvent and using propylene oxide as a network gel inducting agent through the sol-gel process and the supercritical drying and roasting processes. The macromolecule complexing agent is added into the sol-gel process as a gel guiding agent and a dispersant, so that metal aluminum ion sol is uniformly dispersed in the solvent and is restrained by a macromolecule chain segment into a core; the primary particle aggregation mode is changed, so that the microstructure of the aerogel is changed. Meanwhile, the density and the intensity of the gel are enhanced.

The invention discloses a method for removing thiophenic sulfur from fuel oil by taking Cu2O / SiO2-Al2O3 composite aerogel as an adsorbent, and belongs to the technical field of fuel oil processing. The method comprises the following steps: preparing the Cu2O / SiO2-Al2O3 composite aerogel by adopting a sol-gel normal-pressure drying method and taking ethyl orthosilicate as a silicon source, aluminum chloride hexahydrate as an aluminum source and copper acetate as a copper source; and then filling the Cu2O / SiO2-Al2O3 composite aerogel into a fixed-bed adsorption device, and injecting model gasoline at a certain temperature and flow. The model gasoline after adsorption is collected at a lower end outlet of a reaction device to perform gas chromatographic analysis, and the result shows that the Cu2O / SiO2-Al2O3 composite aerogel has good adsorptive property for thiophene and benzothiophene. The Cu2O / SiO2-Al2O3 composite aerogel adsorbent used in the method provided by the invention has a simple preparation method, is low in cost, can be used repeatedly for multiple times, and is high in economic benefit, mild in adsorption condition, and low in requirement on adsorption equipment.

The invention discloses a preparation method of super-hydrophobic paper, wherein the preparation method comprises the following steps: step 1, carrying out ultrasonic emulsification on octadecylamineto obtain an octadecylamine emulsion; step 2, uniformly mixing the octadecylamine emulsion with paper pulp in proportion to form an octadecylamine-paper pulp mixed solution; step 3, adding tannic acidand aluminum chloride hexahydrate into the octadecylamine-paper pulp mixed solution, adjusting the pH value, and carrying out a stirring reaction to form tannic acid@octadecylamine microcapsule (TA@ODA) modified paper fiber pulp; and step 4, centrifuging, flattening and drying the paper fiber pulp to obtain the super-hydrophobic paper. Compared with a traditional method, the preparation method ofthe super-hydrophobic paper provided by the invention does not need complex instruments and equipment, does not need a complex synthesis process, does not need too long time, and has the advantages of simple operation, convenience, environmental protection and the like, and the prepared super-hydrophobic paper has good super-hydrophobic performance, good durability and self-repairing performance.

The invention provides a solid phase microextraction coating using NH2-MIL-101(Al) as materials and a preparation method thereof. The method comprises the following steps: putting stainless steel wires in 60-80 EG C of hydrofluoric acid to be corroded to form a rough surface; taking aluminum chloride hexahydrate and 2-aminoterephthalic acid, dissolving with N, N-dimethylformamide, carbinol or chloroform, and then separately putting solutions in a microwave reaction tank; and immersing the corroded stainless steel wires in the microwave reaction tank, reacting for 5-6 hours at 120-130 DEG C, then washing with secondary water, and drying for the night at 80-100 DEG C. The method has simple operation and short preparation time. The prepared coating has the advantages of good resistance to high temperature, high chemical stability, good reproducibility, high enrichment coefficient, low cost and wide application range, and can be used for separation and enrichment of substances such as polycyclic aromatic hydrocarbon, pesticides and the like.

The invention relates to a treatment method of sodium tetrachloroaluminate solid residues. The treatment method comprises the following steps: (1) mixing sodium tetrachloroaluminate solid residues with water for dissociation, then adding a separating agent to separate out aluminum chloride hexahydrate, or directly mixing the sodium tetrachloroaluminate solid residues with the separating agent fordissociation, separating out aluminum chloride hexahydrate, and then carrying out primary solid-liquid separation to obtain an aluminum chloride hexahydrate solid and primary filtrate; and (2) carrying out concentration crystallization and secondary solid-liquid separation on the primary filtrate to obtain a sodium chloride solid and a secondary filtrate. According to the treatment method, an organic solvent does not need to be introduced, cross contamination does not exist, and the cost can be reduced; the aluminum chloride and the sodium chloride which are obtained by dissociating the sodiumtetrachloroaluminate solid residues are fully recycled, so that the high resource utilization of the sodium tetrachloroaluminate solid residues is realized, the obtained secondary filtrate can be returned to a solid residue dissociation stage to provide a separating agent, the concept of circular economy is embodied, and the method has the advantages of simple process flow, simplicity and convenience in operation and the like.

The invention discloses a preparation method of a porous mullite block. The preparation method of the porous mullite block comprises the following steps of: (1) dissolving aluminum chloride hexahydrate and polyoxyethylene in a solvent, dropwise adding tetramethyl orthosilicate, and then stirring continuously and reacting for 50-70minutes; (2) under the room temperature, adding epoxypropane in the mixture obtained in the step (1) and stirring uniformly to obtain a homogeneous solution; (3) sealing the homogeneous solution in a container and then gelling at 35-45 DEG C for 8-12minutes to obtain wet gel; (4) aging the wet gel at 35-45 DEG C for 68-76 hours; and (5) drying the aged gel prepared in the step (4) at 70-80 DEG C for 2-3 days, and then carrying out heat treatment at 800-1400 DEG C for 4-6 hours to obtain the porous mullite block. The porous mullite block prepared by the method has the characteristics that the block has a hierarchical porous structure, the size and amount of apertures are controllable, the frameworks are continuous, the specific surface area is large, and the like.

Disclosed a method for the preparation of granular sorbent based on LiCl.2Al(OH)3.nH2O for lithium recovery from lithium-containing brines, comprising production of a powder of LiCl.2Al(OU)3.nH2O (DUAL-Cl) from aluminum chloride solution comprising lithium, separation of the powder DUAL-Cl from the obtained solution by centrifugation with further removing the excess LiCl, drying of the powder DUAL-Cl; and, granulation of the powder DUAL-Cl with the addition of chlorinated polyvinylchloride and a organochlorine solvent to obtain the granular sorbent based on LiCl.2Al(OU)3.nH2O; wherein the aluminum chloride solution comprising lithium is prepared by dissolving crystalline hydrate of hexaaqua aluminum chloride in aqueous solutions comprising lithium in the form of LiCl, Li2CO3, or LiOH.H2O or mixtures thereof, and concentration of aluminum chloride in the solution is 45-220 kg / m3.

The invention discloses a method used for reinforced electric restoration of arsenic chromium composite polluted soil with a reducing agent / a chelating agent. The method comprises following steps: a,arsenic chromium composite polluted soil is subjected to air drying and crushing so as to obtain arsenic chromium composite polluted soil powder; b, calcium chloride and aluminium chloride hexahydrateare stirred to be uniform so as to obtain a mixed solution; with nitrogen gas introduction and stirring, a sodium hydroxide solution is added into the mixed solution so as to obtain a layered doublehydroxide solution; with nitrogen gas introduction, washing, drying, and grinding are carried out so as to obtain a layered double hydroxide powder; and c, the arsenic chromium composite polluted soilpowder and the layered double hydroxide powder are introduced into the space between two permeable reactive barriers of an electrokinetic remediation-permeable reactive barrier (EK-PRB) restoration device, reducing agents or composite reagents such as ascorbic acid and sodium citrate are added into the polluted soil, an obtained product is allowed to stand, and is provided with electricity for restoration. The method is capable of removing arsenic and chromium in soil with high efficiency; operation is convenient; cost is low; period is short; and the layered double hydroxide CaAl-LDH is recoverable.

The invention relates to chromium-free photo-sensitive resist for rotary screen printing, which comprises the following components: polyvinyl alcohol (30%), gelatin, p-diazodiphenylamine paraformaldehyde condensate, polyisocyanate blocks, silicone modified polyurethane resins, trimethylolethane, 3-6 parts of stilbazole dimethyl sulfate salt, hydroquinone, curing agents, polyethyleneimine, ethylamine boron trifluoride salt, benzyl dimethylamine, aluminum chloride hexahydrate, solvents, aluminum chloride hexahydrate, silicone defoaming agents and vitamin E. The chromium-free photo-sensitive resist has the advantages of strong binding force of the high-precision photo-sensitive resist for a rotary printing screen and the rotary printing screen, excellent chemical resistance and abrasion resistance, and high press run; plate making and developing of the rotary printing screen are clear and mesh holes cannot be stopped; through adding the silicone modified polyurethane resin, the tensile property of the rotary printing screen in a printing process is improved, and the service life of the rotary printing screen is prolonged.

The invention discloses a preparation method for a copper aluminate spinel porous block. The preparation method comprises the following steps: first, dissolving a phase separation inducing agent in a solvent; then, adding copper chloride dihydrate, aluminium chloride hexahydrate and a complexing agent, and stirring until the copper chloride dihydrate, the aluminium chloride hexahydrate and the complexing agent are completely dissolved; next, adding a gelatinization accelerator dropwise and stirring uniformly to obtain a homogeneous solution; later on, sealing the homogeneous solution in a container, and gelatinizing for 1 to 5 minutes at 60 to 80 DEG C to obtain wet gel; finally, aging the wet gel for 6 to 12 hours at 60 to 80 DEG C, drying the aged wet, and performing heat treatment for 1 to 3 hours at 500 to 900 DEG C to obtain the copper aluminate spinel porous block.

The invention discloses a preparation method for cobalt carbonate with aluminium adulteration. The method comprises the steps that 1) a cobalt chloride solution and an ammonium bicarbonate solution are prepared; 2) aluminium chloride hexahydrate is added into the cobalt chloride solution, the mixture is uniformly stirred to obtain a doped cobalt chloride solution; 3) oil removal is separately conducted on the ammonium bicarbonate solution and the doped cobalt chloride solution; 4) after oil removal, the doped cobalt chloride solution reacts with the ammonium bicarbonate solution to produce doped cobalt carbonate; 5) the doped cobalt carbonate is filtered and washed three times; 6) the washed doped cobalt carbonate is dried and broken under the negative condition to obtain cobalt carbonatepowder with aluminium adulteration. The preparation method is characterized in that firstly, the aluminium chloride hexahydrate is added into the cobalt chloride solution, full exchanging and mixing are conducted on the aluminium element and the cobalt element on the ion level, therefore the dispersity of the aluminium ions in the cobalt chloride solution is improved, and the particle size of theprepared cobalt carbonate with cadmium adulteration is uniform, and the dispersity is good.

The invention relates to a basalt fiber felt-loaded aluminum oxide defluorination and adsorption material and a preparation method thereof. The defluorination and adsorption material is basalt fiber felt-loaded aluminum oxide. The preparation method comprises the following steps of preparing boehmite gel from aluminum chloride hexahydrate, ammonium hydroxide and nitric acid; pre-treating basalt fiber for 1-3 hours at 35-600 DEG C; impregnating the pre-treated basalt fiber felt in the prepared boehmite gel for 10-30 minutes, drying, and roasting for 1.5-2 hours at 550-600 DEG C to prepare the basalt fiber felt-loaded aluminum oxide. The basalt fiber felt-loaded aluminum oxide can be used for adsorption and defluorination in the field of water treatment. The basalt fiber felt-loaded aluminum oxide defluorination and adsorption material has the beneficial effects that the defluorination and adsorption material is easy to recycle, the waste of central materials in solid materials is reduced, and the cost is saved.

The invention discloses a preparation method of a silicon dioxide nanowire-reinforced silicon-aluminum aerogel composite material. According to the invention, silicon-aluminum aerogel prepared by using aluminum chloride hexahydrate and tetraethoxysilane as co-precursors and using water and ethanol as solvents is used as a matrix, silicon dioxide nanowires are used as a reinforcing agent, and compounding and supercritical drying processes are conducted to prepare the silicon dioxide nanowire / silicon-aluminum aerogel composite material with excellent performance . The obtained aerogel compositematerial is low in sample density, high in specific surface area, high in mechanical property and good in high-temperature resistance. The preparation method is simple in process, flexible to operateand easy for mass production.

The invention discloses a preparation method of a water treatment defluorination agent. The preparation method is characterized by comprising the following steps: step 1, preparing a sodium silicate solution, and adding a diluted hydrochloric acid solution for activation to obtain a solution A; step 2, weighing a first fixed amount of aluminum chloride hexahydrate solid, adding the aluminum chloride hexahydrate solid into the solution A, stirring for 10-30 minutes, continuously weighing a second fixed amount of ferric chloride hexahydrate solid, slowly adding the ferric chloride hexahydrate solid into the solution until the color of the solution becomes dark and turbid, continuously stirring, gradually clarifying the solution, and finally turning into a reddish brown transparent solution, so as to obtain a solution B; step 3, preparing a sodium carboxymethyl cellulose solution, namely a solution C; and step 4, placing the prepared solution B and the solution C in a constant-temperature water bath kettle according to the proportion, fully mixing and reacting in a high-speed stirring and heating state, and after the reaction is finished, obtaining the final defluorination agent solution. The fluorine removal rate of the deep defluorination agent can reach 95% or above, the fluorine removal rate is high, the fluorine removal effect is obvious, and deep fluorine removal of fluorine-containing wastewater can be achieved.

The invention provides a method for grinding assisted self-permeation synthesis of metal mesoporous silica for high-efficiency catalytic degradation of methylene blue, wherein the method includes thefollowing steps: S1, dissolving a three-block copolymer P123 in water, adding aluminum chloride hexahydrate, and stirring for 0.5-1 h in a 35 DEG C water bath pot; S2, then adding a silicon source, and continuing to stir until a precipitate appears; S3, loading the mixed solution in the step S2 into a high pressure reaction kettle, carrying out hydrothermal aging for 24 h at the temperature of 100DEG C, filtering to obtain a solid, then washing and air-drying, and thus obtaining mesoporous silica containing a template agent, and S4, mixing the mesoporous silica prepared in the step S3 with anhydrous ferric trichloride, fully grinding, roasting and removing the template agent, to obtain the metal-doped mesoporous silica material. The invention provides the method for synthesis of the metalspecies-doped mesoporous silica for high-efficiency catalytic degradation of methylene blue, wherein the method has the advantages of low cost, simple process, environmental protection, low carbon, time saving and energy conservation.

The invention discloses a preparation method of an inorganic-organic composite polymer water treatment defluorination flocculant, which is characterized by comprising the following steps of (1) stirring a sodium silicate solution at a constant temperature to obtain a colorless transparent solution, then adding diluted hydrochloric acid for acidification, and stirring to obtain a solution A, (2) dissolving aluminum chloride hexahydrate and ferric chloride hexahydrate in distilled water, adding the solution A while stirring, then adding sodium carbonate, and stirring to obtain a solution B, (3) dissolving modified chitosan, poly dimethyl diallyl ammonium chloride and sodium hydrogen sulfite in distilled water, adjusting the pH value with diluted hydrochloric acid, and stirring to obtain a solution C, and (4) adding the solution B into the solution C, and stirring for reaction to prepare the defluorination flocculant solution. When the flocculant disclosed by the invention is used for treating the fluorine-containing wastewater, the fluorine content in the effluent can reach the class III first-grade discharge standard of national Environmental Quality Standard for Surface Water (GB3838-2002), the fluorine removal rate is high, the fluorine removal effect is obvious, and deep treatment of the fluorine-containing wastewater can be realized.

The invention discloses a preparation method of a porous aluminum phosphate block. According to the preparation method, aluminum chloride hexahydrate is taken as an aluminum source, phosphoric acid is taken as a phosphorus source, a mixture of deionized water and absolute methanol is taken as a solvent, propylene epoxide is taken as a gel accelerator, and polyoxyethylene is taken as a phase separation inductive agent; the following steps are sequentially performed: 1), aluminum chloride hexahydrate and polyoxyethylene are put in a reaction flask, deionized water, absolute methanol and phosphoric acid are doped, and stirring is performed until polyoxyethylene is dissolved completely; 2), under the condition of ice bath, propylene epoxide is doped into a solution obtained in step 1), stirring is continuously performed until propylene epoxide is dissolved completely; 3), the reaction flask is sealed and aged, then a lid is opened, and drying is performed; and 4), obtained xerogel is processed for 1.5-2.5 hours at the temperature of 1,050-1,150 DEG C so as to obtain the porous aluminum phosphate block. The porous aluminum phosphate block can be directly applied to the fields of catalysis, separation, absorption, extraction, degradation, curing and the like.

The invention discloses a method for rapidly preparing chlorine ion intercalation cobalt-aluminum hydrotalcite. According to the method disclosed by the invention, the pH (Potential of Hydrogen) valueof a preparation system is stably controlled to 4.00 to 5.00 by utilizing an acetic acid-sodium acetate buffering solution, cobalt chloride hexahydrate and aluminum chloride hexahydrate are used as raw materials, sodium hydroxide is used as a precipitant and de-ionized water is used as a solvent and a washing agent; the chlorine ion intercalation cobalt-aluminum hydrotalcite is prepared through the steps of preparing a solution, carrying out titration and co-precipitation, carrying out hydrothermal treatment, washing, extraction filtering and drying. The preparation method disclosed by the invention can be used for effectively avoiding influences that CO2 in the environment is dissolved to form CO3<2-> ions, and is a rapid preparation method of the pure-phase chlorine ion intercalation cobalt-aluminum hydrotalcite.

The invention discloses a method for synthesis of CIASe (Cu-In-Al-Se) nanocrystalline by using a triethylene tetramine auxiliary polyhydric alcohol solution; the method is as follows: first, preparing a precursor solution, weighing copper chloride dihydrate, indium chloride tetrahydrate and aluminum chloride hexahydrate to dissolve in triethylene glycol, wherein the molar ratio of Cu / (In + Al) being 1, the molar ratio of In / Al being 7 ~ 10:0 ~ 3; then adding the triethylene glycol into a the three-port round-bottom flask, adding selenium powder, then adding polyvinylpyrrolidone to produce an anion source reaction based liquid; then putting the three-port round-bottom flask into a thermal-type reaction reflux device for synthesis of the CIASe (Cu-In-Al-Se) nanocrystalline. According to the method, a polyhydric alcohol solution chemical synthesis method is firstly used, triethylene tetramine is used as a reaction auxiliary agent, the method for synthesis of the CIASe (Cu-In-Al-Se) nanocrystalline is provided, and the method is safe in process, facilitates product purity and chemometry control, and is green, nontoxic, and low in cost.

The invention discloses a preparation method of a macroporous mayenite fluorescent material. The method comprises the following steps of (1) at room temperature, dissolving a phase separation inducerinto a mixed solvent; after the magnetic stirring, adding aluminum chloride hexahydrate and calcium chloride dihydrate used as precursors; adding terbium chloride nonahydrate, drying control agents and chelating agents; after the uniform stirring, adding gel accelerators; performing ultrasonic treatment for 50 to 70 seconds; (2) putting sol liquid obtained in the step (1) into a sealed container;performing gelling at 50 to 70 DEG C; performing aging for 24+ / - 2h; (3) putting the aged gel obtained in the step (2) into a container; performing drying for 3 to 4d at 50 to 70 DEG C; then, performing heat treatment for 2 to 3h at 900 to 1300 DEG C to obtain the macroporous mayenite fluorescent material. By using the method, the rare earth element doping mayenite fluorescent material with controllable pore dimension, higher porosity and continuous macroporous structures can be obtained.

The invention belongs to the technical field of preparation of nano materials, and discloses a preparation method of an AlOOH nanosheet-based 0D / 2D composite material, and the method comprises the following steps: preparing a sea urchin-like copper oxide-boehmite (CuO / AlOOH) nano composite material by using a hydrothermal method; using copper chloride dihydrate and aluminum chloride hexahydrate asraw materials, urea as a precipitator and deionized water as a solvent for perform a constant-temperature reaction at a specific temperature, and preparing a uniformly dispersed urchin-shaped CuO / AlOOH nano material through centrifugal separation, sample washing and drying. The prepared 0D / 2D nano composite material efficiently catalyzes sodium borohydride to reduce p-nitrophenol through two processes of adsorption and hydrogenation. The method is simple in preparation process, short in period and low in cost, can be used for large-scale industrial production, and has good economic benefitsand environmental benefits.

The invention discloses a method for synthesis of Cu-In-Al-Se nanocrystalline by using an ethanediamine auxiliary polyhydric alcohol solution; the method using a direct injection method is as follows: first, weighing copper chloride dihydrate, indium chloride tetrahydrate and aluminum chloride hexahydrate to dissolve in triethylene glycol to prepare a cation precursor solution, wherein the molar ratio of Cu / (In + Al) being 1, and the molar ratio of In / Al being 3:1; then adding the triethylene glycol into a three-port round-bottom flask, adding selenium powder and adding polyvinylpyrrolidone to produce an anion source reaction based liquid; and then synthesizing the Cu-In-Al-Se (CIASe) nanocrystalline by reflux reaction, and when injection temperature / reflow temperature being 210 DEG C, adding 1-2 ml of ethylenediamine being. The method has the advantages of mild reaction conditions, safety and low toxicity, easy operation, low cost, single and stable product phase and good repeatability.

The invention provides a heat-resistant iron oxide green pigment, which is prepared from the following components in parts by mass: 10 to 15 parts of iron oxide yellow, 4.0 to 8.2 parts of sodium hydroxide, 10.0 to 12 parts of aluminum sulfate octadecahydrate, 0.70 to 1.2 parts of sodium hexametaphosphate, 0.50 to 2 parts of zinc chloride, 2.4 to 3.0 parts of aluminum chloride hexahydrate, 2.20 to 2.5 parts of sulfonated cobalt phthalocyanine and the balance of water.

The invention discloses a multi-optical-performance carbon dot and a preparation method and application thereof. The carbon dot comprises a core state used for emitting blue light and a surface state distributed on the surface of the core state and used for emitting red light. According to the invention, 1,2-phenylenediamine serves as a carbon and nitrogen source, aluminum chloride hexahydrate serves as a catalyst, and an in-situ solvent-free catalysis-aided heating strategy is used so as to synthesize the light gray solid carbon dot; the light gray solid carbon dot emits blue fluorescence under excitation of 365-nm ultraviolet light, and yellow phosphorescence is displayed after an excitation light source is extinguished; and the light gray quantum dot is dissolved in a dimethyl sulfoxide or N,N-dimethylformamide solvent, the fluorescence of the formed solution changes from blue to red, and near-infrared emission is achieved. The raw materials and the catalyst used for preparing the carbon dot are cheap and easy to obtain, tedious pretreatment and purification processes are not needed, the preparation process is energy-saving and time-saving, production and preparation can be expanded, and the dot has industrial application prospects.

An animal cell culture medium, a preparing method thereof and applications of the culture medium are provided. The culture medium comprises 150-230 parts by weight of amino acids or salts thereof, 180-280 parts by weight of carbohydrates, 160-260 parts by weight of inorganic salts, 1-2 parts by weight of vitamins and 0.002-0.003 part by weight of trace elements. The trace elements comprise manganese chloride tetrahydrate, sodium metavanadate, selenious acid, germanium dioxide, potassium bromide, chromium chloride hexahydrate, ammonium metavanadate, rubidium chloride, cadmium chloride, cobalt chloride hexahydrate, barium acetate, zirconyl chloride octahydrate, sodium fluoride, ammonium molybdate tetrahydrate, copper chloride dihydrate, lithium chloride and aluminium chloride hexahydrate. The culture medium is simple and definite in components, convenient to prepare and use, stable in quality, and low in batch differences, and can be particularly used for culturing a plurality of animal cells. Cell growth states are good and stable.

The invention belongs to the technical field of composite materials, and particularly relates to a zinc-aluminum hydrotalcite carbon nanotube composite adsorption material and a preparation method andapplication thereof. The preparation method comprises the following steps: adding carbon nanotubes into a three-neck round bottom flask filled with concentrated nitric acid and concentrated sulfuricacid, stirring and reacting in an ultrasonic water bath for 1.5h, cooling to room temperature, filtering by suction and washing, and drying to obtain an intermediate product named CNT-COOH; weighing zinc chloride and aluminum chloride hexahydrate in a beaker, adding deionized water, stirring to dissolve, adding the intermediate product obtained in the step 1), slowly dropping a 2 mol L<-1> NaOH solution at a certain speed, adjusting pH to 10, stirring for 2-5 hours, and carrying out hydrothermal reaction to obtain the target product, Zn / Al-LDH @ CNTs. The method has the advantages of low synthesis cost, simple synthesis method, energy conservation, environmental protection, large adsorption capacity, high adsorption speed, wide application and practical applicability.

The invention relates to a method for synthesizing an aluminum citrate cross-linking agent in a low carbon solvent. (1) the weight part proportions of chemical raw materials are as follows: 100-140 parts of methanol, 40-60 parts of ethanol, 40-100 parts of citric acid, 30-60 parts of aluminium chloride hexahydrate, 10-20 parts of sodium hydroxide and 20-30 parts of water. (2) the method comprises the following chemical reaction process steps of: firstly mixing methanol and ethanol according to the proportion under a normal pressure; adding citric acid to the above mixture to make citric acid dissolved completely; adding aluminium chloride hexahydrate under stirring; heating to a temperature of 40-80 DEG C; reacting for 4 hours; dropwise adding a sodium hydroxide solution slowly to adjust a pH value to 5.5-8.5; finally, adding a residual component of water, stirring uniformly, and thus the aluminum citrate cross-linking agent is obtained. The aluminum citrate cross-linking agent synthesized by the method has stable gel-forming properties and controllable gel-forming time, and has no sulfate ions and nitrate ions. The synthetic process is gent and easy to operate, has no generation of industrial waste materials, and is economic and environment-friendly.