674 results about "Iron chloride" patented technology

This invention discloses a method for leaching lithium iron phosphate mixed powder with iron salts and recovering all components, belonging to the field of battery recycling. The invention uses an iron salt solution to leach the mixed powder, obtaining a lithium-containing leachate and leaching residue. Ferrous ions in the leachate are regenerated into ferric iron through acidification and oxidation, and recycled for leaching the next batch of mixed powder. After reaching a preset number of cycles, the leachate is used for re-leaching multiple batches of leaching residue to improve the lithium leaching rate. Ultimately, a enriched solution containing Li, Fe, Cu, and Al and graphite-containing iron phosphate residue are obtained. Copper is recovered from the enriched solution through iron powder replacement, and a high-purity lithium chloride solution is obtained through extraction and separation, while ferric chloride (recycled) and aluminum chloride crystals are also recovered. The leaching residue is treated with hydrochloric acid to obtain regenerated graphite, and the pH is adjusted with alkali to obtain high-purity iron phosphate. This method achieves full component recovery under mild conditions, reducing separation steps and chemical consumption through a "leaching-regeneration-leaching" cycle mechanism, thus achieving both environmental and economic benefits.

The invention discloses a preparation method for selectively oxidizing thioether into sulfoxide through photo-initiation, and belongs to the field of synthesis of medical compounds. The preparation method comprises the following steps that in the air atmosphere, a thioether compound is dissolved in an acetonitrile-water mixed solvent, inorganic metal salt catalysts such as ferric chloride and copper sulfate are added, the mixture reacts for 8-48 h at the temperature of 0-45 DEG C under illumination with the wavelength of 295-405 nm, selective oxidation is carried out, and the sulfoxide product is obtained, and the molar ratio of thioether to the catalysts is 5: 1. The method overcomes the problems of excessive oxidation risk, complicated operation, environmental pollution and the like caused by dependence of a noble metal catalyst and use of a strong oxidant in the existing thioether oxidation method, has the advantages of high catalytic efficiency, high yield and excellent selectivity, can greatly reduce the production cost, is suitable for later industrial synthesis and amplification, and has wide application prospects. The method has the advantages of no expensive metal catalyst or oxidant, simple preparation process, high efficiency, environmental protection, safety and cost saving.

The invention provides a wide pH applicable multi-biomolecule detection MOF probe, a preparation method, a detection method and application, the probe is an MIL-53 (Fe) (at) AA (at) EZ probe, and comprises a metal organic framework MIL-53 (Fe), amino acid and enzyme; the preparation method comprises the following steps: weighing terephthalic acid and ferric chloride hexahydrate, adding into N, N-dimethylformamide, mixing and stirring, pouring the mixed solution into a stainless steel autoclave, heating and reacting, naturally cooling to room temperature, centrifugally separating a product, and washing with N, N-dimethylformamide and absolute ethyl alcohol to obtain the metal organic framework MIL-53 (Fe). The preparation method comprises the following steps: mixing a metal organic framework MIL-53 (Fe) with an amino acid solution, and carrying out ultrasonic treatment and stirring to obtain an MIL-53 (Fe) coated AA solution; the method comprises the following steps: dissolving enzyme in an MIL-53 (Fe) (at) AA solution, uniformly mixing, stirring, centrifugally separating a product, taking precipitate, and drying in vacuum to obtain the MIL-53 (Fe) (at) AA (at) EZ probe. The pH application range is wide, one-step detection can be achieved, and the method has the advantages of being rapid in reaction, high in sensitivity, low in detection limit and easy and convenient to operate.

The invention discloses a preparation method of a CoMnFe-PBA hollow superstructure material, which combines seed induced self-assembly with an in-situ ligand / metal ion exchange growth method, and comprises the following steps: dissolving MOF-74 and potassium ferricyanide in deionized water, and carrying out ultrasonic treatment to form a solution A; dissolving polyvinylpyrrolidone, ferric chloride and manganese chloride tetrahydrate in a mixed solvent of ethanol and deionized water, and stirring for a certain time to obtain a solution B; dropwise adding the solution B into the solution A, stirring, carrying out centrifugal collection, ethanol washing and freeze drying on a reaction product, and collecting a sample to obtain the CoMnFe-PBA hollow superstructure material. According to the CoMnFe-PBA hollow superstructure material prepared through the method, a construction unit of a self-assembly superstructure is expanded to PBA nanoparticles, and the synthesis strategy, the construction unit, the structural level and the application range of the self-assembly superstructure can be further expanded.

The invention belongs to the field of organic synthetic chemistry, and relates to a preparation method of melatonin and meerythrine indole derivatives and compounds. Specifically, the indole derivative is efficiently synthesized by taking arylamine and carboxylic acid as raw materials through a one-pot two-step reaction in the presence of catalysis of ferric chloride hexahydrate (FeCl3. 6H2O), a ligand, a diazotization reagent, an additive and a solvent under the conditions of visible light irradiation, inert atmosphere and room temperature. According to the method, visible light induced iron-based LMCT catalysis and iron lewis acid catalysis functions are integrated, and efficient integration of diazotization, decarboxylation, free radical coupling and cyclization reaction is achieved. The method has the advantages that raw materials are cheap and easy to obtain, reaction conditions are mild, substrate applicability is wide, functional group compatibility is good, operation is easy, convenient and safe, and environment friendliness is achieved, gram-level scale preparation can be achieved, and a green and efficient synthesis path is provided for indole compounds with biological activity such as melatonin and meerythrine.

The invention discloses a preparation method and application of an iron-based metal organic framework material / carbon nitride nitrogen fixation photocatalyst in the field of photocatalytic materials, the iron-based metal organic framework material / carbon nitride nitrogen fixation photocatalyst is prepared by taking ferric chloride, terephthalic acid and graphite phase carbon nitride as raw materials through a hydrothermal reaction, a heterojunction is constructed through a solvothermal method, uniform loading of MIL-53 (Fe) on the surface of b-C3N4 is achieved, and the photocatalytic performance of the photocatalyst is improved. And the formed heterogeneous interface significantly improves the photon-generated carrier separation efficiency. The obtained MIL-53 (Fe) / b-C3N4 photocatalytic composite material has good visible light response characteristic and excellent photocatalytic nitrogen fixation performance, and is safe, non-toxic, green and environment-friendly. The produced ammonia water can be directly absorbed by wheat, so that the chlorophyll content of leaves is increased by 11-13%, the plant height is increased by 19-21%, and a novel photocatalysis scheme is provided for green agriculture.

The invention relates to the technical field of heavy metal pollution treatment, and particularly discloses a biochar material and method for adsorbing heavy metals in wormcast. The biochar material for adsorbing the heavy metals in the wormcast adopts waste green tea residues as a raw material, and after being soaked in a phosphoric acid solution with the mass concentration of 38-42%, the biochar material is subjected to heat treatment at the temperature of 540-560 DEG C to obtain P-BC powder. The P-BC powder is soaked in a metal salt solution with the total metal ion concentration being 0.8-1.2 mol / L, and under the action of a precipitator, the LDH-coated P-BC material is obtained. The LDH-coated P-BC material is mixed with a ferric chloride hexahydrate solution and a NaBH4 aqueous solution for reaction to obtain the biochar material for adsorbing the heavy metals in the wormcast, so that the fixing and stabilizing effects of the biochar material on the heavy metals in the wormcast are improved.

The invention relates to the field of electrochemical energy conversion, and discloses a method for preparing a metal-nitrogen-carbon composite electrocatalyst through molten salt circulation and application of the metal-nitrogen-carbon composite electrocatalyst, and the method comprises the following steps: step 1, synthesizing a ZIF-8 precursor with a first-level nanometer second-level micrometer structure; 2, the ZIF-8 precursor is subjected to annealing treatment under the protection of inert gas, and a zinc-nitrogen-carbon material is obtained; 3, the zinc-nitrogen-carbon material, ferric chloride hexahydrate and fused salt are mixed and dispersed, and a mixture is obtained; 4, the mixture is dried and then calcined, and a calcined product is obtained; and 5, mixing the calcined product with water. According to the method, the fused salt is recycled, so that the fused salt is efficiently recycled and can be stably recycled, compared with a preparation method of using the fused salt once, the raw material cost is reduced, meanwhile, fused salt recycling is achieved only through water dissolution and centrifugal separation, additional acid and alkali treatment is not needed, and waste liquid discharge is reduced.

The invention relates to a high-toughness anti-crack magnetic decorative film and a preparation method thereof. The decorative film is prepared from the following raw materials in parts by weight: 40 to 60 parts of poly (dihydrothiophene-vinyl ether) copolymer, 10 to 25 parts of shell layer self-assembly modified Fe3O4 nanosheets, 5 to 15 parts of polyether ester block elastomer, 0.5 to 2 parts of sodium dodecyl benzene sulfonate, 0.5 to 1.5 parts of fluorosilane coupling agent, 0.1 to 1.0 part of 2-hydroxybenzotriazole ultraviolet absorbent, 3 to 6 parts of bisphenol A type epoxy curing agent and 0.05 to 0.5 part of imidazole catalyst. The flexible copolymer is synthesized through copolymerization of dihydrothiophene and vinyl ether, the modified Fe3O4 nanosheets form a Fe3O4 structure through coprecipitation of ferric chloride and ferrous chloride and regulation and control of ammonia water, and shell self-assembly coating is carried out through tetraethoxysilane and a block micromolecule interface agent. The material has excellent tensile strength, elongation at break, magnetic adsorption force and cycling stability, and is suitable for the application fields of flexible magnetic films and high-adhesion decorations.

The invention relates to a salt-resistant biomass interface evaporation material as well as a preparation method and application thereof, and relates to the technical field of interface evaporation materials. The preparation method comprises the following steps: mixing sunflower fiber dispersion liquid, polyvinyl alcohol and carbon-containing molybdenum disulfide, then adding glutaraldehyde, then carrying out liquid nitrogen freezing and freeze drying, sequentially soaking with a tannic acid solution, a calcium chloride solution and a ferric chloride solution, and then carrying out freeze drying. Natural sunflower fibers are used as a main framework, cotton is used as a supporting material, carbon-containing MoS2 is prepared and crosslinked with polyvinyl alcohol, a hydrophilic functional layer is constructed on the surface of the material through tannic acid, and the tannic acid is coordinated and complexed with Ca and Fe < + >, so that a more stable hydrophilic complexed coating is formed on the surface of the material; the surface wettability and the water conveying capacity of the material are further improved, meanwhile, salt crystal deposition and precipitation in the seawater evaporation process are effectively inhibited, and the oxidation resistance and the seawater corrosion resistance of the material are improved.

The invention discloses a treatment method of strong complexing copper wastewater, which comprises the following steps: adjusting the pH value of the strong complexing copper wastewater, adding a complexing breaking agent, stirring and reacting until the color of the solution becomes brownish black, then adding ferric chloride for deep purification, and finally adjusting the pH value back for flocculating settling and solid-liquid separation. And finally, obtaining clear liquid with the effluent copper ion concentration stably lower than 0.5 mg / L and ferrite precipitate-sludge with stable chemical properties. The method is simple and low in cost, secondary pollution is avoided, the treatment difficulty and environmental risks of the strong complexing copper wastewater and the sludge obtained through treatment are greatly reduced, and the method has wide application prospects.

The invention discloses a core-shell nano-enzyme composite spray gel dressing and a preparation method and application thereof.The dressing comprises a component A prepared from sodium alginate, N-isopropylacrylamide PNIPAM, core-shell nano-enzyme and curcumin and a component B of a divalent metal salt solution, and the component A and the component B are sprayed at the same time to form the core-shell nano-enzyme composite spray gel dressing. The preparation method of the core-shell nano enzyme comprises the following steps: mixing potassium ferrocyanide, ferric trichloride and polyvinylpyrrolidone to obtain a Prussian blue nano particle precursor solution; carrying out ultrasonic emulsification treatment and replacement on the curcumin core solution and the Prussian blue nanoparticle precursor solution; and freeze-drying to obtain the core-shell nano-enzyme. Through rapid ionic crosslinking of sodium alginate and divalent metal ions and the temperature-sensitive phase change characteristic of the temperature-sensitive polymer poly (N-isopropylacrylamide), the gel dressing is rapidly formed, the damaged skin is effectively covered and protected, the excellent antioxidant, anti-inflammatory and antibacterial capabilities are achieved, and the healing cycle of the radiodermatitis wound can be remarkably shortened.

The invention discloses a method for promoting biomass accumulation of haematococcus pluvialis, which comprises the following steps: adding salicylic acid, melatonin and alpha-ketoglutaric acid into a basic culture medium, and replacing ferric trichloride with ferric citrate as an iron source to obtain an improved BG-11 culture medium; the method comprises the following steps: inoculating a haematococcus pluvialis seed solution into a culture bottle containing an improved culture medium, carrying out illumination treatment on the first day to the second day by adopting pulsed red light with the wavelength of 620 nm in the early stage of a green stage, carrying out illumination treatment on the third day to the fifth day by adopting red light with the wavelength of 660 nm in the middle stage of the green stage, and carrying out illumination treatment on the sixth day to the seventh day by adopting pulsed red light with the wavelength of 680 nm in the later stage of the green stage. Through a synergistic scheme of the improved BG-11 culture medium, staged red light treatment and dynamic environment regulation and control, the problems of low light energy utilization rate and insufficient stress resistance in the existing haematococcus pluvialis culture process are solved, high efficiency and stability of haematococcus pluvialis biomass accumulation are realized, the biomass can reach 7.0 * 10 < 5 > cells / mL in the later period of the green stage, and the yield of the haematococcus pluvialis can reach 7.0 * 10 < 5 > cells / mL in the later period of the green stage. And the survival rate of haematococcus pluvialis cells reaches 95%.

The invention belongs to the field of medicines, and discloses a preparation process of ferric carboxymaltose, which comprises the following steps: oxidizing maltodextrin, performing ultrafiltration concentration, dissolving in a ferric trichloride aqueous solution, and performing coordination, ultrafiltration and spray drying to obtain powdery ferric carboxymaltose. The process has the advantages of simple amplification, no need of solvent application, low raw material cost and manufacturing cost, uniform product molecular weight distribution and the like, the dissolution rate of the obtained product is obviously higher than that of a product obtained by a precipitation process, and technical support is provided for more efficient preparation production.

The invention provides an interface-stable and anti-fatigue Janus conductive hydrogel, a preparation method and sensing application, and the preparation method comprises the following steps: uniformly mixing acrylic acid, ethylene glycol dimethacrylate, a photoinitiator, ferric chloride hexahydrate and deionized water to obtain a support layer precursor solution; mixing acrylic acid, lauryl methacrylate, N, N '-methylene bisacrylamide and the nanocellulose suspension, performing ultrasonic treatment to obtain a Pickering emulsion, adding a photoinitiator into the Pickering emulsion, and uniformly mixing to obtain an adhesion layer precursor solution; and pouring the support layer precursor solution into a mold, then slowly pouring the adhesion layer precursor solution onto the support layer precursor solution, carrying out ultraviolet curing, taking out from the mold, and cleaning to obtain the Janus conductive hydrogel. According to the method, the Pickering emulsion phase separation and the charge shielding effect are combined through a simple and convenient one-step method, and the problems that a traditional multi-layer assembly process is complex in operation and unstable in interface are effectively solved.

The invention discloses a zinc negative electrode plate with a three-dimensional copper foil substrate and a preparation method and application thereof, relates to the technical field of aqueous zinc ion batteries, and provides a preparation method of a three-dimensional copper foil substrate loaded zinc positive electrode aiming at the problems of short cycle life, low coulombic efficiency and the like caused by dendritic crystal growth and side reaction of an aqueous zinc ion battery zinc negative electrode. A three-dimensional porous structure is constructed on a zinc-loving copper foil substrate through a wet chemical method, and the method comprises the following specific steps: (1) immersing a copper foil into an acidic solution containing ferric trichloride hexahydrate for reaction to prepare a three-dimensional porous copper foil; and (2) taking a three-dimensional copper foil (3D Cu) as a substrate, and loading zinc metal through an electroplating process to obtain the three-dimensional copper foil substrate galvanized negative electrode (3D Cu-Zn). The three-dimensional porous structure can balance electric field distribution, induce uniform deposition of zinc ions, inhibit dendritic crystal growth and optimize current distribution.

The invention provides an aerogel adsorption material for contaminated soil remediation as well as a preparation method and application thereof. The preparation method comprises the following steps: performing intercalation treatment on Na-montmorillonite to obtain intercalated montmorillonite; dispersing the intercalated montmorillonite in deionized water, dropwise adding a ferric chloride solution under stirring and heating conditions, dropwise adding alkali liquor to adjust the pH value of a reaction system, and then carrying out standing aging, filtering, washing and drying to obtain iron modified montmorillonite; the preparation method comprises the following steps: mixing, stirring and heating iron-modified montmorillonite and a nano cellulose solution to obtain composite sol, adding a cross-linking agent and a catalyst into the composite sol, mixing, stirring and heating, injecting the mixture into a mold, standing, aging, heating and curing to obtain composite gel, immersing the composite gel into absolute ethyl alcohol, and freeze-drying to obtain the aerogel adsorption material. The aerogel adsorption material prepared by the method has excellent mechanical strength while keeping the high specific surface area of aerogel, and realizes efficient fixation of various heavy metals through ion exchange, coordination and the like.

The application discloses a kind of high-altitude area weathering bridge steel member rust layer stabilizing treatment agent and use method, mainly solve the rust layer of high-altitude area weathering bridge steel member is difficult to stabilize and surface rust layer color is not uniform, rust liquid flow and other problems.The stabilizing treatment agent is composed of fast rusting agent and rust layer stabilizer, the fast rusting agent is composed of ferric chloride, copper sulfate, hydrogen peroxide, ethylene glycol and deionized water, the rust layer stabilizer is composed of sodium polyphosphate, sodium bisulfite and methanol and deionized water.The treatment agent of the application is suitable for the harsh environment of low temperature, oxygen is rare, inorganic salt system treatment agent is prone to icing in high sea area, the surface of high-altitude area weathering bridge steel member after processing forms brown rust layer with uniform color, no rust liquid flow.The rust layer of weathering bridge steel member can be stabilized within 8 hours by using the application, the thickness of the rust layer after processing is greater than or equal to 50 μm, the surface rust layer color difference value ΔE of different parts of the component is less than or equal to 10, and the amount of surface rust layer of the component is greater than or equal to 15 g / m 2 .

The present application provides a method for treating perfluorinated compound-containing wastewater rapidly. The method comprises the steps of: preparing an oxy-chloride iron adsorbent by pyrolyzing a raw material of ferric chloride; and treating the perfluorinated compound-containing wastewater by one of the following processes: (i) a batch adsorption process: adding the oxy-chloride iron into the perfluorinated compound-containing wastewater, then constant temperature oscillation, and filtration; or (ii) a dynamic adsorption process: flowing the perfluorinated compound-containing wastewater through an adsorption column filled with the oxy-chloride iron adsorbent, to complete the treatment of the perfluorinated compound-containing wastewater. The present application constructs an intrinsic interface micro-electric field on the surface of the oxy-chloride iron, which significantly accelerates the adsorption kinetics of the perfluorinated compound. The method of the present application is suitable for both batch and dynamic adsorption processes, and exhibits excellent adsorption performance in treating perfluorinated compounds, can reach adsorption equilibrium in 10 minutes, the dynamic adsorption rate is 4.3-6.5 times that of commercial adsorbents, and is easy to regenerate with anti-interference, and has a broad application prospect.

The invention discloses a low-dielectric optical transparent adhesive film and a preparation method thereof, and relates to the field of adhesive films. When the low-dielectric optical transparent adhesive film is prepared, nano silicon dioxide sequentially reacts with 2-(4-chlorosulfonylphenyl) ethyltrimethoxysilane and 2, 2 ', 4, 4'-tetrahydroxybenzophenone, and modified silicon dioxide is prepared; the modified silicon dioxide, 4-vinylpyridine, allyltrimethoxysilane, 2-ethylhexyl acrylate, butyl acrylate, hydroxyethyl acrylate, diallyl phosphate and isophorone diisocyanate are subjected to a reaction, then ferric chloride is added, a polytetrafluoroethylene plate is coated and cured, and an adhesive film matrix is prepared; and carrying out surface treatment on the adhesive film substrate by using dimethoxydimethylsilane to prepare the low-dielectric optical transparent adhesive film. The low-dielectric optical transparent adhesive film prepared by the invention has flame-retardant, durable and waterproof capabilities.

This invention provides a method for preparing a tandem catalyst and its application in degrading organic matter in wastewater, belonging to the field of wastewater treatment technology. The tandem catalyst is prepared by co-precipitation of ferrous chloride, ferric chloride, and aluminum nitrate, followed by grinding and calcination with high-temperature kerosene and activated carbon. The tandem catalyst is then applied to degrade organic matter in wastewater. The tandem catalyst prepared by this invention comprises a hierarchical porous carbon support and a co-precipitate of iron(III) oxide and aluminum(III) oxide supported on the surface of the hierarchical porous carbon support. Using hierarchical porous carbon as the support and aluminum(III) oxide and iron(III) oxide in series as the catalyst facilitates the ozone decomposition of organic matter. The tandem catalyst of this invention can effectively degrade organic matter, achieving a degradation rate of over 95% for both total cyanide and ammonia nitrogen.

The application belongs to the technical field of antitumor drugs, and discloses an iron complex as well as a preparation method and application thereof.The preparation steps of the iron complex are as follows: 1, reacting 2-hydrazinylbenzothiazole, a ketone compound and a solvent to obtain a ligand; and 2, reacting the ligand, ferric chloride and a solvent, and then cooling and crystallizing to obtain the iron complex.The obtained iron complex can effectively induce cancer cell ferroptosis, can effectively inhibit the growth of breast cancer, lung cancer, liver cancer or glioma, has high selectivity, has small toxicity to normal cell strains, and has better treatment effect compared with existing clinical drugs, such as cisplatin.

The application discloses an iron / copper-porphyrin nanoparticle and a preparation method and application thereof, and the nanoparticle is prepared through the following steps: adding iron chloride, copper chloride, tetra(4-carboxyphenyl)porphyrin and benzoic acid into a reaction solvent N,N-dimethylformamide solution, uniformly stirring at room temperature, and reacting at high temperature; and after the reaction is completed, the iron / manganese-porphyrin nanoparticle is obtained through centrifugation and washing. The iron / manganese-porphyrin nanoparticle is prepared by using a brand-new method, the nanoparticle can be degraded in a glutathione solution and release iron ions and copper ions, is used for catalyzing hydrogen peroxide to be converted into a hydroxyl radical (•OH), and tetra(4-carboxyphenyl)porphyrin can generate singlet oxygen (O2) under 660 nm laser irradiation, and is expected to become a good nano-carrier for accelerating photodynamic therapy-chemical kinetic therapy. 1 O2).

The invention provides a high-activity adjustable solid catalyst as well as a preparation method and application thereof. The preparation method of the adjustable solid catalyst comprises the following steps: mixing and stirring hexadecyl trimethyl ammonium bromide, ferric chloride hexahydrate and water according to a solid-to-liquid ratio of (1-3): (1-3): (30-40) to prepare a mixed solution; and dipping transition metal salt into the prepared mixed solution, and then carrying out hydrothermal crystallization reaction to prepare the high-activity adjustable solid catalyst. The product prepared by the invention is doped with transition metal, so that the coupling effect is strong; and the structure morphology of the catalyst and the distribution of transition metal elements are more uniform. Metal ions in the regular octahedral structure are located at the vertex, so that reactant adsorption is more facilitated, the selectivity of ortho-alkylation of aromatic compounds is higher, and the activity of catalyzing ortho-alkylation of the catalyst is obviously improved. The metal salt-loaded high-activity adjustable solid catalyst prepared by the invention can be applied to production of hindered phenol antioxidants from phenolic substances.

The invention discloses a nano SiO2 composite iron microsphere toughening agent for well cementation cement, and belongs to the technical field of petroleum and natural gas well cementation engineering materials. The preparation method of the flexibilizer comprises the following steps: adding ferric trichloride into ethylene glycol, and stirring and dissolving at normal temperature to obtain a solution A; the preparation method comprises the following steps: adding polyvinylpyrrolidone into ethylene glycol, stirring and dissolving at a certain temperature to obtain a solution B, and then adding sodium citrate to prepare a solution C; tetraethoxysilane is added into deionized water and then mixed with the solution A, a hydrolysis reaction of tetraethoxysilane is carried out, and a solution D with nano SiO2 is prepared; gradually and slowly dropwise adding the solution D into the solution C at a certain temperature, and carrying out a first oxidation-reduction reaction; cooling to room temperature, adding sodium borohydride, and carrying out a second oxidation-reduction reaction; and filtering, washing and drying the solution to obtain the flexibilizer. The cement stone is endowed with high toughness and compressive strength through the synergistic effect of the iron elementary substance and the nano SiO2, and the cement stone has a wide market prospect.

The application relates to the technical field of insulating flame-retardant fire extinguishing agent preparation, and relates to an insulating flame-retardant fire extinguishing agent and a preparation method thereof.The preparation method comprises the following steps: receiving an insulating flame-retardant fire extinguishing agent preparation instruction, confirming preparation materials and preparation devices according to the insulating flame-retardant fire extinguishing agent preparation instruction, obtaining an optimal mass ratio, weighing ammonium polyphosphate powder, pentaerythritol powder and lignin powder according to the optimal mass ratio, preparing bio-based intumescent flame-retardant component powder, preparing sodium alginate solution and ferric chloride crosslinking solution based on sodium alginate and deionized water, preparing a gel particle set based on the sodium alginate solution and the ferric chloride crosslinking solution, obtaining catalytic carbonization synergistic component powder according to the gel particle set, preparing the insulating flame-retardant fire extinguishing agent based on the bio-based intumescent flame-retardant component powder and the catalytic carbonization synergistic component powder, and completing the preparation of the insulating flame-retardant fire extinguishing agent based on the insulating flame-retardant fire extinguishing agent.The application can realize stable quality and safe and environment-friendly production of the fire extinguishing agent.

The application discloses polymeric ferric chloride and a production process and application thereof, and preparation of the polymeric ferric chloride comprises the following steps: S1, mixing waste acid with iron oxide scale, adjusting acidity, heating and refluxing, and cooling to obtain a mixture; S2, adding an oxidizing agent and a stabilizer into the mixture, and continuously heating and reacting to obtain the polymeric ferric chloride; the stabilizer is a chitosan-desferrioxamine complex; the polymeric ferric chloride is prepared by using a catalytic oxidation method, the chitosan-desferrioxamine complex stabilizer is used to chelate Fe, the stability of the polymeric ferric chloride is improved, the hydrolysis of Fe is inhibited, and the process is beneficial to improving the total iron content in the polymeric ferric chloride and improving the flocculation effect of the polymeric ferric chloride in sewage treatment.

The application discloses a preparation method of polyaluminum chloride, and is characterized by comprising the following steps: S1, adding aluminum ash and hydrochloric acid solution into an acidification reaction tank, heating and reacting, filtering after the reaction is completed, and passing the filtrate into a polymerization reaction kettle; S2, adding calcium carbonate into the polymerization reaction kettle in batches to carry out polymerization reaction, stopping the reaction after the calcium carbonate is completely dissolved and the PH of the solution is 3-5; S3, adding polyacrylamide and ferric chloride into the polymerization reaction kettle, and precipitating under 1-3 pa low pressure to obtain sludge and upper liquid, concentrating and crystallizing the upper liquid, crushing the crystal, and obtaining polyaluminum chloride. The application increases an automatic blocking mechanism below a crystallization and crushing tank, automatically blocks when the sub-packaging cylinder is filled with crystals, achieves the purpose of quantitative sub-packaging, and does not cause too much or too little crystals in the sub-packaging cylinder, and does not require staff to be always beside the machine.

The invention relates to the field of biomedicine, and particularly provides bimetal MOFs with photo-thermal and anti-oxidation effects and a preparation method and application thereof.The preparation method comprises the following steps that 1, 4, 5, 8-naphthalene tetracarboxylic dianhydride and 4-amino-4H-1, 2, 4-triazole are dispersed in DMF, a reflux reaction is conducted at the temperature of 140-160 DEG C, and a DBPT organic ligand is obtained; the preparation method comprises the following steps: fully dissolving a DBPT organic ligand, anhydrous ferric chloride, anhydrous cupric nitrate and fluoboric acid in DMF at room temperature to obtain a reaction solution, carrying out ultrasonic treatment on the reaction solution, stirring until the reaction solution is completely dissolved, putting the obtained solution into a high-pressure reaction kettle, carrying out a heating reaction, and cooling to room temperature after the reaction is finished; and centrifuging the product, cleaning and drying to obtain the Fe / Cu-MOFs. The preparation method disclosed by the invention is simple to operate, and the prepared bimetallic MOFs have good photo-thermal and oxidation resistance and can be applied to multiple treatment requirements of bacterial infection and inflammation environment regulation and control.