765 results about "Sulphate sodium" patented technology

The invention discloses a method for recovering lithium phosphate from lithium iron phosphate black powder. The method comprises the following steps: mixing black powder recovered from waste lithium iron phosphate batteries with sodium persulfate, and calcining; adding water into the obtained calcined product, dissolving, filtering to obtain water extract A and leaching residues, washing the leaching residues with water, and calcining at high temperature to obtain battery-grade iron phosphate; adding a sodium hydroxide solution into the water extract A, and reacting to obtain a water extract B; adding a trisodium phosphate solution into the water immersion liquid B, fully reacting, performing suction filtration to obtain lithium phosphate and filtrate, and cleaning and drying the lithium phosphate to obtain battery-grade lithium phosphate; and freezing and denitrifying the filtrate to obtain a denitrified solution, and adding the denitrified solution into the sodium hydroxide solution for recycling. The method does not generate wastes, recycles the filtrate in the whole process, theoretically realizes zero loss of the lithium element, prevents the iron element from entering the solution, simplifies the preparation steps of the lithium phosphate, and has the advantages of cost reduction and environmental protection.

The invention relates to the technical field of preparation of an electrolyte for a vanadium redox flow battery, in particular to a reduction method of an alkaline vanadium-containing solution during short-process preparation of a vanadium electrolyte. The reduction method comprises the following steps: (1) adding a reducing agent sodium sulfite into an alkaline vanadium-containing solution and dissolving; and (2) acid is added into the solution obtained after dissolving in the step (1), the pH is adjusted, a reduction reaction is conducted, and vanadium is reduced to be tetravalent. The method provided by the invention effectively solves the problem of vanadium loss caused by precipitation generated in the sequential operation process of acidification and reduction of the alkaline vanadium-containing solution in the prior art, and meanwhile, the method provided by the invention is easy for engineering implementation.

The invention discloses a method for extracting PN / PDRN from lactobacillus bulgaricus and application of the PN / PDRN in relieving and anti-inflammatory aspects, belongs to the technical field of biochemistry, and solves the problems that in the prior art, the acquisition source of PN / PDRN is unstable, and pollution easily exists. According to the preparation method, cell walls of lactobacillus bulgaricus are preliminarily dissolved through alkaline conditions and lysozyme in the preparation process, cell membranes of bacteria are destroyed through lauryl sodium sulfate to be split, the conditions are mild, meanwhile, PVP is added to protect a PN structure, and the purity of the PN / PDRN is effectively improved through a final product prepared through the preparation method.

The invention provides a composite quality control liquid for an electrochemical multi-parameter detector. The composite quality control liquid comprises a buffer volume, a quality control substance and a stabilizer, the stabilizing agent comprises 5 to 50 g / L of bovine serum albumin, 0.1 to 10 g / L of EDTA-2Na (Ethylene Diamine Tetraacetic Acid), 10 to 100 g / L of a viscosity regulator, 0.3 to 25 g / L of a preservative and 5 to 20 g / L of a surfactant; the preparation method comprises the following steps: adding components of the stabilizer into a buffer system, preparing a preparation solution, preparing mother liquor of each quality control substance, proportionally mixing glucose mother liquor, uric acid mother liquor, beta-hydroxybutyric acid mother liquor and cholesterol sodium sulfate and triglyceride composite mother liquor according to the target concentration of the quality control solution, and fixing the volume by using the preparation solution to obtain the quality control liquid. And fully and uniformly mixing to obtain the composite quality control liquid. The composite quality control liquid can ensure that uric acid is not degraded, cholesterol triglyceride is not separated out, the formula is mild, and active substances in a detection system are not influenced.

A solid gel foam fire extinguishing agent includes a material A and a material B; the material A includes the following components in mass percentage: 18% to 25% of an inorganic silicate, 0.25% of sodium carboxymethyl cellulose, 0.25% of sodium alginate, 0.1% to 0.5% of xanthan gum, 0.5% to 1% of polyvinyl alcohol, 0.5% to 1.5% of sodium lauryl sulfate, 0.01% to 0.05% of dodecanol, 0.005% to 0.01% of disodium ethylenediaminetetraacetate, and water as a balance; and the material B includes the following components in mass percentage: 25% of sodium dihydrogen phosphate, 25% of acetic acid, 1% to 1.5% of fatty alcohol polyoxyethylene ether, 0.1% to 0.5% of 3% aqueous film-forming foam, 0.01% to 0.05% of the dodecanol, and water as a balance. The fire extinguishing agent exhibits advantages including low density, low oil wettability, high resistance, high adhesiveness, and foam collapse-resistant properties in fire resistance.

A method for the bioremediation of hydrocarbon-contaminated production water through the microbiological process of culturing salt-tolerant bacteria in a high-salt cell culture medium for decontamination. The high-salt cell culture medium contains sodium chloride, sodium sulfate, sodium bicarbonate, calcium chloride, and calcium chloride, along with agar, water, and salt-tolerant bacteria to form broth. Once incubated to form an inoculation mixture, this broth is combined with production water to produce a bacteria-containing liquid mixture, and then treated with production water, bioremediating by propagating the bacteria-containing liquid mixture in the treated production water.

The invention discloses a method for preparing a sodium-rich boundary-rich iron-based prussian blue analogue (FePBA) through one-step hydrothermal synthesis assisted by sodium thiosulfate. The method specifically comprises the following steps: preparing a solution A and a Na4Fe (I I) (CN) 6 solution; the molar ratio of ferrocyanide to Fe ions in the solution B is 3: 4. And preparing a solution B to react with ferrocyanide to form FePBA. Adding sodium citrate to form a sodium and citrate-rich environment, then adding ferric iron salt, and fully stirring to chelate the added Fe < 3 + > with the citrate; and adding sodium thiosulfate after the step. Preparing a PVP (Polyvinyl Pyrrolidone) solution to play roles in dispersing FePBA and reducing agglomeration, and taking the PVP solution as a solution C; slowly dropwise adding the solution A and the solution B into the solution C at a constant speed by using a rubber head dropper to finally obtain a precursor solution, carrying out hydrothermal reaction for 6 hours at 110 DEG C, carrying out suction filtration on the obtained precipitate, and drying to obtain a FePBA sample. According to the invention, the time required for synthesis is greatly shortened, and the traditional coprecipitation of more than 24 hours is improved into rapid hydrothermal reaction of 6 hours.

The invention relates to the field of demulsifiers, in particular to an oil sludge demulsifier as well as a preparation method and application thereof. The oil sludge demulsifier comprises the following components in parts by mass: 20-35 parts of a surface active compound, 7-12 parts of a sodium alkyl sulfate cosolvent, 0.6-1.8 parts of a stabilizer and 48-55 parts of water, wherein the surface active compound comprises hyperbranched polyamidoamine and polyether amine modified magnetic nanoparticles. According to the oil sludge demulsifier, the problems that most of existing demulsifiers are small in dehydration amount, low in dehydration speed, poor in demulsification effect and low in treated oil content are solved, the demulsification performance of the oil sludge demulsifier is improved, the demulsification and dehydration efficiency is improved, and effective separation of oil sludge is achieved.

This invention discloses a method for extracting PN / PDRN from Lactobacillus bulgaricus and its application in soothing and anti-inflammatory effects. Belonging to the field of biochemistry, this method solves the problems of unstable PN / PDRN sources and susceptibility to contamination in existing technologies. In this invention, the preparation relies on alkaline conditions and lysozyme to initially dissolve the cell wall of Lactobacillus bulgaricus, and then sodium dodecyl sulfate is used to disrupt the bacterial cell membrane, causing it to lyse. The conditions are mild, and PVP is added to protect the PN structure. The final product prepared by this invention effectively improves the purity of the obtained PN / PDRN.

The invention provides a waste molybdenum-based catalyst regeneration method which comprises the following steps: crushing and grinding a waste molybdenum-based catalyst to obtain catalyst powder; adding a liquid caustic soda solution into the obtained catalyst powder, and placing in a reaction kettle for hydrothermal reaction to obtain molybdenum hydroxide and sodium sulfate; the obtained molybdenum hydroxide is sequentially subjected to drying treatment, forming treatment and calcining treatment, and the regenerated catalyst is obtained. According to the present invention, the poisoning catalyst is regenerated by mainly using the hydrothermal reaction principle, such that the catalyst cost can be reduced, and the operation cost caused by other waste catalyst recovery methods can be avoided, such that the regeneration of the catalyst active component is achieved through the multi-stage staged treatment so as to significantly improve the regeneration efficiency and the regeneration frequency; and a new technical path is provided for resource utilization of the waste molybdenum-based catalyst.

The invention relates to the technical field of organic synthesis, in particular to a method for constructing Orforglipron tetrahydropyran ring chirality through enzyme catalysis, which comprises the following steps: step S1, taking SM1 as a raw material, and carrying out hydrolysis resolution in a solvent, a buffer salt system and enzyme catalysis to obtain a chiral pure intermediate INT-1; step S2; performing ring closing on the INT-1 through Grignard reaction to synthesize a lactone intermediate; s3, carrying out Diball-H reduction, quenching, dichloromethane extraction and anhydrous sodium sulfate drying on the INT-4, and then reducing the INT-4 by using triethyl silane to obtain an intermediate INT3; step S4, coupling the INT-3 in the presence of a catalyst and a ligand to obtain an intermediate INT-4; step S5, carrying out deprotection and salification on the INT-4 to obtain an intermediate INT5; s6, closing an indole ring from INT5 to obtain a compound of which the general formula is A; chirality is constructed through enzyme catalysis, isomer impurities do not need to be split and separated through SFC when the chirality is constructed, the loss is reduced, the yield is increased, and a target product is obtained with high chiral selectivity; meanwhile, the cost is relatively reduced, and the cost is saved.

The invention discloses an anti-freezing solution for improving the survival rate of sperms of Chinese prawns and a cryopreservation method of the anti-freezing solution, and belongs to the technical field of low-temperature biology and reproductive science. The invention provides an anti-freezing solution for cryopreservation of sperms of Chinese prawns, which comprises a basic solution and an anti-freezing agent, and the anti-freezing agent is dimethyl sulfoxide with the volume fraction of 10% or glycerol with the volume fraction of 10%; the basic liquid contains 23.69 g of sodium chloride, 1.1 g of potassium chloride, 14.8 g of magnesium chloride hexahydrate, 4.3 g of sodium sulfate, 0.23 g of sodium bicarbonate, 1.12 g of calcium chloride and distilled water with the constant volume of 1000 mL. According to the cryopreservation method provided by the invention, 10% dimethyl sulfoxide or 10% glycerol is adopted as an antifreeze agent, the sperm density is controlled to be 1 * 10 < 7 > / mL, and step-by-step cooling is carried out, so that the survival rate of unfrozen sperms reaches 90% or above. The long-term preservation effect of the Chinese prawn sperms is remarkably improved, and the method is suitable for germplasm resource protection and efficient breeding.

An aqueous oleanolic acid solution, including from about 0.10 to 2.5 weight % oleanolic acid, from about 60 to 90 weight % solvent, and from about 20 to 40 weight % solubility agent, wherein the solvent includes water, the solubility agent includes sodium lauryl sulfate (SLS), and the aqueous oleanolic acid solution is substantially free of ethanol and dimethyl sulfoxide (DMSO).

The invention discloses a core-shell structure P (MMA-MBA) copolymer heat-storage phase-change microcapsule, the microstructure is of a spherical structure, the core-shell structure is adopted, the core structure is hexadecane, the shell structure is a methyl methacrylate (MMA) and N, N-methylene bisacrylamide (MBA) copolymer, the emulsifier is lauryl sodium sulfate (SDS), the initiator is potassium persulfate, and the pH value of the core-shell structure P (MMA-MBA) copolymer heat-storage phase-change microcapsule is 7-8. And the coating efficiency is 70-75%. The preparation method comprises the following steps: 1, preparing an oil phase and a water phase; and 2, polymerization reaction of the microcapsule. A phase change cement material based on a core-shell structure P (MMA-MBA) copolymer heat storage phase change microcapsule is prepared by compounding the P (MMA-MBA) copolymer heat storage phase change microcapsule and a cement matrix, and has hydrophobicity; obvious weightlessness exists in two times.

The invention relates to the technical field of high polymer materials, in particular to a color-spun superfine sea-island imitation sheepskin fabric and a production method thereof. The color-spun superfine sea-island imitation sheepskin fabric comprises the following raw materials in parts by weight: color-spun superfine sea-island fibers, conventional polyester filaments and a functional additive, the color spinning superfine sea-island fiber is formed by blending alkali-resistant color master batches and a sea-island base material, the mass ratio of an island component to a sea component in the sea-island base material is (5-7): (3-5), and raw materials of the island component and the sea component are polyethylene terephthalate and polyethylene respectively; the functional additive comprises an alkali-resistant stabilizer, a dyeing auxiliary agent and a softening agent. According to the invention, sodium citrate and KH-550 in the alkali-resistant stabilizer react at a constant temperature, sodium citrate is dissolved in the process and forms weak interaction with amino of KH-550 to enhance the stability of the system, and ether bonds of polyoxyethylene fatty acid and sulfonic groups of lauryl sodium sulfate in the dyeing auxiliary agent form a synergistic effect to enhance the emulsifying and wrapping capacity to grease and color paste.

The invention relates to the field of washing, and particularly discloses sulfur tea tree essential oil silicone oil-free shampoo. The shampoo comprises the following raw materials: water; fatty alcohol polyoxyethylene ether sodium sulfate; coconut oil monoethanolamide; hydroxypropyl guar gum hydroxypropyl trimethyl ammonium chloride; disodium EDTA (Ethylene Diamine Tetraacetic Acid); cocamidopropyl betaine is added; an alkyl glycoside; sodium lauroyl sarcosine; allantoin; pPG-3 (Polypropylene Glycol) octyl ether; a polyquaternary ammonium salt-52; colloidal sulfur; d-panthenol; 10 parts of polyquaternium-10; a pearling agent; maltotetraose; tea tree essential oil; a preservative; a colorant; daily-use essence; and citric acid monohydrate. The preparation method comprises the following steps: sequentially adding the raw materials, dispersing and dissolving, adjusting the pH value, filtering and discharging. The shampoo disclosed by the invention can keep water-oil balance of scalp and reduce the problems of hair damage and dryness at the same time.

The invention discloses a battery repair liquid and repair filling equipment thereof, and the battery repair liquid comprises deionized water, and further comprises a vulcanization supplement and an electrolyte supplement according to repair type requirements; the vulcanizing supplement further comprises a chelating agent, a sodium sulfate solution, a corrosion inhibitor and a polyoxyethylene ether surfactant; the invention relates to the technical field of battery repair, through deep cooperation of a targeted repair liquid formula and intelligent equipment, the core damage problems of lead-acid battery vulcanization, electrolyte degradation and the like are solved, a modular storage tank, a dynamic mixing system and a multi-mode activation technology are innovatively integrated, the repair efficiency is greatly improved, the equipment adopts a portable design, and the cost is low. And rapid deployment and multi-scene application are supported, a vulcanization / electrolysis double-repair mode can be accurately matched in cooperation with an intelligent diagnosis system, a single machine can complete a complex repair process needing cooperation of multiple sets of equipment in a traditional process, and the repair efficiency is improved.

The invention belongs to the technical field of microbial culture, and particularly relates to a culture medium composition and application thereof in PDRN recombinant escherichia coli fermentation. The culture medium composition comprises a fermentation culture medium and a fed-batch culture medium, the fermentation culture medium consists of disodium hydrogen phosphate, monopotassium phosphate, ammonium sulfate, magnesium chloride, calcium nitrate tetrahydrate, glycerol and water; the supplemented culture medium is composed of dipotassium phosphate, sodium dihydrogen phosphate, sodium sulfate, ammonium sulfate, ammonium chloride, diammonium hydrogen citrate, glycerin and water, and the metabolic requirements of PDRN recombinant escherichia coli are accurately matched. Meanwhile, the invention provides a fermentation method using the composition, and the problems of unbalanced nutrition, low fermentation efficiency and the like of an existing culture medium are solved. Stable proliferation of thalli can be remarkably promoted, the yield of PDRN products is increased, the culture medium is easy and convenient to prepare, fermentation conditions are easy to control, and the culture medium is suitable for industrial large-scale production and has important application value.

The invention relates to the field of synergists, aims to solve the problems of crop phytotoxicity, environmental pollution and the like possibly caused by application of excessive herbicides, and provides a synergist which comprises the following components in parts by weight: 50-55 parts of ammonium sulfate, 27-37.5 parts of anhydrous sodium sulfate, 8-10 parts of a dispersing agent, 3-5 parts of potassium fulvate, 1-2 parts of a wetting agent and 0.5-1 part of ethyoxyl modified trisiloxane. The synergist obtained by compounding the raw materials can effectively improve the use effect of the herbicide; the dispersing agent can form a protective film on the surfaces of pesticide particles, so that the pesticide particles are prevented from being broken or agglomerated due to mutual collision, the surface tension between water and pesticide powder is reduced, and the solubility and stability of the pesticide are enhanced; ethyoxyl modified trisiloxane can promote pesticide components to be spread on the surfaces of plants quickly and uniformly, promote the pesticide components to permeate into the plants and accelerate the conduction effect of the plants, so that the effect of the pesticide is greatly improved; the growth promoter can promote the absorption of the plant to the pesticide and the conduction of the pesticide in the plant body.

The present invention relates to the technical field of organic synthesis, and specifically relates to a method for constructing the chirality of a pyran ring in Orforglipron by means of enzymatic catalysis, the method comprising the following steps: step S1, by using SM1 and SM2 as starting materials, carrying out a reaction under the action of a palladium catalyst and a ligand to obtain INT-1; step S2, under the catalysis of Pd / C, subjecting INT-1 to double bond hydrogenation reduction to obtain INT-2; step S3, in the presence of a solvent, a buffer salt system and enzymatic catalysis, subjecting INT-2 to hydrolysis and resolution to obtain a chirally pure intermediate INT-3; step S4, subjecting INT-3 to a Grignard reaction for cyclization, so as to synthesize a lactone intermediate INT-4; and step S5, subjecting INT-4 to reduction by means of Dibal-H, quenching same, performing extraction with dichloromethane, drying same with anhydrous sodium sulfate, and then performing reduction by means of triethylsilane to obtain a compound of general formula A. In the present invention, the chirality is constructed by means of enzymatic catalysis without the need of SFC resolution for separating isomeric impurities during the construction of the chirality, thereby reducing losses and improving yield, obtaining the target product at high yield and high chiral selectivity, and further saving expenses and reducing costs.

The invention provides an ultrathin temperature-sensitive hydrogel flexible electrode and a preparation method thereof, and belongs to the technical field of hydrogel electrodes. The preparation method comprises the following steps: mixing monomer acryloyl glycinamide and acrylic acid, and dissolving in deionized water to obtain a mixed solution A; adding a chemical cross-linking agent and a poly (3, 4-ethylenedioxythiophene)-poly (styrene sulfonate) solution into the mixed solution A to obtain a mixed solution B; adding sodium sulfate and tannic acid into the mixed solution B to obtain a prepolymerization solution; adding an initiator into the pre-polymerized solution to obtain a polymerized solution; the preparation method comprises the following steps: adding thermoplastic polyurethane particles into a mixed solution of N, N-dimethylformamide and tetrahydrofuran to form a precursor solution, and carrying out electrostatic spinning on the precursor solution to obtain a film matrix; and coating the polymerization solution on the surface of a thin film substrate, and packaging a conductive copper foil to obtain the ultrathin temperature-sensitive hydrogel flexible electrode. The mechanical property and the adhesion property of the flexible electrode are improved, and the adhesion strength can be dynamically adjusted by regulating and controlling the temperature.

The invention belongs to the technical field of uranium mining, and particularly relates to a sodium persulfate acid oxidation green in-situ leaching uranium mining method. The method comprises the following steps: (1) exploring and pretreating an ore bed; (2) arranging an injection well and an extraction well; (3) preparing an acidic leaching solution; (4) injecting a leaching solution; (5) in-situ leaching circulation and monitoring; and (6) post-harvest treatment. The novel green acid in-situ leaching uranium mining method is developed, the oxidation rate of tetravalent uranium can be greatly increased, the uranium leaching rate is increased, and compared with an existing acid leaching method, the uranium leaching rate is remarkably increased, and environmental protection is achieved.

The invention provides a sodium-rich ferric sodium pyrophosphate positive electrode precursor and a preparation method and application thereof.The preparation method comprises the following steps that a ferrite solution, a phosphoric acid source solution, a pyrophosphoric acid source solution, an alkaline solution and a sodium persulfate solution are injected into a base solution in a parallel flow mode for a co-precipitation reaction, the sodium-rich ferric sodium pyrophosphate positive electrode precursor is obtained; wherein the base solution is pure water. The method disclosed by the invention is simple to operate, the sodium-rich ferric sodium pyrophosphate positive electrode precursor with high sodium content, uniform element distribution and uniform phase can be prepared, the sodium-rich ferric sodium pyrophosphate positive electrode precursor is low in gas production rate in the subsequent sintering process, and the sodium-rich ferric sodium pyrophosphate positive electrode material with high compaction density can be prepared.

The invention relates to a novel quaternary ammonium salt modified positively charged nanofiltration membrane and a preparation method thereof, and belongs to the technical field of membrane separation. Adding the prepared novel quaternary ammonium salt monomer QAC serving as an additive into a water-phase solution containing an amine monomer and lauryl sodium sulfate (SDS) to form a mixed water-phase solution; and carrying out polymerization reaction with acyl chloride monomers in an oil phase on a water-oil interface by an interfacial polymerization method to realize preparation of the novel quaternary ammonium salt modified positively charged nanofiltration membrane. The QAC monomer serving as a novel end-capping reagent can react with acyl chloride groups in acyl chloride monomers in the interfacial polymerization process, so that further reaction between the QAC monomer and amine monomers in a water phase is prevented, the crosslinking degree of a macromolecular network structure in the polymerization process is reduced, and the permeation flux of the composite membrane is favorably improved. Meanwhile, the quaternary ammonium salt structure also effectively enhances the positive charge density of the surface of the nanofiltration membrane, so that the interception performance of the nanofiltration membrane on divalent magnesium ions in the magnesium-lithium separation process is enhanced, and efficient separation of magnesium and lithium is realized.

The invention relates to the field of biomimetic materials, in particular to a biomimetic self-cleaning anti-fouling aquaculture net cage material, a preparation method and application of the biomimetic self-cleaning anti-fouling aquaculture net cage material. 0.5 to 2.0 parts by weight of a carboxylated graphene nanosheet; 2.0 to 5.0 parts by weight of nitrogen-doped titanium dioxide nanoparticles; 1.0 to 3.0 parts by weight of silica nanoparticles; 5.0 to 10.0 parts by weight of calcium ion cross-linked modified sodium alginate; 1.0 to 3.0 parts by weight of octadecyl trichlorosilane; 0.5 to 1.5 parts by weight of lauryl sodium sulfate; through the synergistic effect of a double bionic structure and enhanced photocatalysis, the effective inhibition on attachment of various organisms is realized, and the inhibition rate on attachment organisms such as algae, bacteria and barnacles reaches 75% or above.

The invention relates to the technical field of fiber material preparation, in particular to a high-strength antibacterial polyamide fiber and a preparation method thereof.The preparation method of the high-strength antibacterial polyamide fiber comprises the steps that A, functional polyamide, antibacterial filler, a silane coupling agent, an antioxidant and zinc stearate are premixed through a high-speed mixer, carrying out melt blending by adopting a double-screw extruder to obtain master batches; step B, mixing the master batch with chinlon chips, and performing melt spinning and two-stage hot roller drafting to obtain nascent fibers; and step C, immersing the nascent fiber into a chitosan acetic acid solution, carrying out ultrasonic treatment, immersing into a sodium sulfate aqueous solution, and carrying out gradient heating drying to obtain the high-strength antibacterial polyamide fiber. The prepared high-strength antibacterial polyamide fiber is high in instant antibacterial rate and high in antibacterial durability through a carrier slow release-surface contact dual-mode antibacterial mechanism, and in addition, the fiber is excellent in mechanical property, wear resistance and the like and can meet the requirements for functional clothes.

The invention discloses a preparation method of jade sugarcane juice, and relates to the technical field of food processing, the method comprises the following steps: S1, juicing and ozone sterilization; s2, adding a green color fixative for color protection treatment; s3, adding a clarifying agent; s4, performing non-thermal sterilization treatment; and S5, packaging and storing. The green color fixative is prepared from the following raw materials in percentage by weight: 10 to 20 percent of organic acid, 1 to 3 percent of green tea extract, 0.5 to 1 percent of apple polyphenol, 0.3 to 1 percent of sodium sulfite and the balance of water. The method can effectively sterilize and maintain the quality of the sugarcane juice, ensures that the original color, texture and flavor are not lost in long-time storage, and the prepared sugarcane juice is clear and bright in jade.

The invention relates to the technical field of microcapsule essence, in particular to rapid phase change microcapsule essence and a preparation method thereof. The rapid phase change microcapsule essence is prepared from the following raw materials in parts by mass: 10 to 20 parts of n-hexadecane, 1 to 5 parts of essence, 1 to 3 parts of lauryl sodium sulfate, 3 to 6 parts of mesoporous silicon dioxide, 0.1 to 0.2 part of hexadecyl triethoxysilane, 1 to 2 parts of hydroxylated hexagonal boron nitride, 0.05 to 0.15 part of polyvinylpyrrolidone, 0.1 to 1 part of glycidyl methacrylate and 5 to 15 parts of methyl methacrylate. The invention relates to a UV (ultraviolet) photoinitiator, which is prepared from the following components in parts by weight: 1 to 3 parts of epoxy soybean oil acrylate, 0.08 to 0.6 part of citric acid, 0.05 to 0.15 part of photoinitiator and 0.08 to 0.6 part of persulfate initiator. The microcapsule disclosed by the invention has the characteristics of storing energy and regulating ambient temperature and has aromatic smell, and the preparation method is mild in condition, simple and easy to control in process and suitable for large-scale popularization and application.

This invention discloses a biomass asphalt hard carbon material, negative electrode, battery, and preparation method from waste peels of the citrus fruit. It belongs to the technical field of biomass hard carbon materials for sodium-ion batteries. The preparation of the asphalt hard carbon includes: using waste peels of the citrus fruit and asphalt as raw materials, activating them separately with sodium dodecyl sulfate and naphthalene, then performing pre-carbonization and pre-oxidation, followed by mixing, acidification, and carbonization treatments to obtain biomass asphalt hard carbon. This invention efficiently recycles and utilizes the widely available and high-density waste peels of the citrus fruit, turning waste into treasure. Simultaneously, it employs a green and simple preparation method to obtain biomass asphalt hard carbon with a large interlayer spacing, small specific surface area, and abundant closed-cell volume, significantly improving carbon recovery.

The invention discloses a method for enriching valuable elements by collaborative smelting of magnesium slag and desulfurized gold concentrate, which comprises the following steps: uniformly mixing desulfurized gold concentrate, magnesium slag and solvent powder, granulating and drying to obtain mixed granules; the mixed granules are added into a reduction furnace, a reducing agent is added for reduction smelting, and slag and precious iron alloy are obtained; the method comprises the following steps: crushing the precious iron alloy, and leaching to obtain leaching residues and a leaching solution 1; acid is added into the leaching residues for gold dissolving, leaching liquid 2 is obtained, then sodium sulfite is added into the leaching liquid 2, and gold powder is obtained; adding hydrochloric acid into the leachate 1 to obtain a silver chloride solid and a leachate 3; and heating and pressurizing the leachate 3, and adjusting the pH value to obtain the hematite-form precipitate. According to the method, calcium oxide, silicon oxide and magnesium oxide in the magnesium slag serve as slag formers for reduction smelting of the desulfurized gold concentrate in the high-temperature process, iron alloy is obtained through synergistic reduction smelting, meanwhile, valuable elements such as gold, silver and copper in raw materials are captured, the gold recovery rate is increased to 98% or above under the cyanidation-free condition, the silver recovery rate is increased to 95%, and the iron recovery rate reaches 92%.