128 results about "Iron chloride" patented technology

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.

This invention relates to the field of water treatment, specifically to an iron-doped biomass resource-based water treatment catalyst, its preparation method, and its application. The preparation of the water treatment catalyst includes the following steps: Step 1, drying and dehydrating recovered pigeon manure; Step 2, finely sieving the dried pigeon manure; Step 3, heat-treating the purified pigeon manure in a muffle furnace to obtain resource-based biochar; Step 4, ball milling dopamine hydrochloride, ferric chloride hexahydrate, and resource-based biochar at a mass ratio of 1:(5-15):(80-100); Step 5, calcining the ball-milled material in a tube furnace at 850-950℃. The water treatment catalyst provided by this invention can rapidly reduce the antibiotic content in wastewater, while accelerating antibiotic removal under ammonia nitrogen conditions. It achieves long-term continuous purification during long-term reaction, exhibiting good stability and removal effect, and is beneficial for achieving low-cost treatment of agricultural waste and efficient purification of new pollutant wastewater.

The application belongs to the technical field of photocatalytic materials, and particularly relates to a semi-metal carbon nitride / metal organic framework MIL-53Fe heterojunction photocatalyst, a preparation method and application thereof. The mass ratio of the semi-metal carbon nitride and the metal organic framework MIL-53Fe is 1:10-3:10. The preparation method comprises the following steps: dissolving sodium tricyanomethanide and 1-butyl-3-methyl imidazole chloride in deionized water, and obtaining the semi-metal carbon nitride by using a thermal polymerization method; dissolving iron chloride hexahydrate and 1,4-benzenedicarboxylic acid in dimethylformamide, and then adding the semi-metal carbon nitride, and obtaining the semi-metal carbon nitride / metal organic framework MIL-53Fe heterojunction photocatalyst by using a hydrothermal method. The formation of the heterojunction can greatly improve the photocatalytic reduction activity of the semi-metal carbon nitride / metal organic framework MIL-53Fe on carbon dioxide.

The purpose of this invention is to synthesize a carbon dot-based nanozyme and its cascade detection application. Using ascorbic acid and 1,3,5-pyromellitic acid as raw materials, ethylenediamine as a nitrogen dopant, and ferric chloride as a metal source, a one-step microwave synthesis method is employed in a microwave reactor (glass material). This method solves the problem of high energy consumption caused by the need for high temperature, high pressure, or long reaction time in existing technologies. Characterization and analysis of its morphology, structure, and properties revealed that the prepared iron-nitrogen co-doped carbon dot-based nanozyme consists of two-dimensional spherical carbon nanoparticles with excellent Fe-N... x The active site exhibits POD-like enzyme activity, with catalytic activity exceeding that of most reported nanozymes. Furthermore, this invention synergistically utilizes its peroxidase-like catalytic activity and photodynamic effect to significantly enhance reactive oxygen species (ROS) generation, achieving highly sensitive detection of organophosphorus pesticides and significantly reducing their detection limits. This synergistic strategy provides a new approach for expanding the application of nanomaterials in chemical analysis and sensing.

This invention discloses a method for preparing porous carbon materials. First, the reactants undergo in-situ oxidative polymerization in a solution of methyl orange and ferric chloride to generate a polymer precipitate. The polymer precipitate is washed with acid and water, and dried to obtain polymer powder. Then, the polymer powder is mixed uniformly with a molten salt system in a predetermined ratio to obtain a mixture. Under an inert atmosphere, the mixture is heated to 400°C for pre-carbonization for 1-4 hours at a heating rate of 2-10°C / min, and then heated to 600-1000°C for carbonization for 1-4 hours. After the reaction is completed, residual salts are removed by washing with acid and water, and the porous carbon material is obtained after drying.

The present application relates to the technical field of porphyrin-based covalent organic framework material preparation, in particular to a mild preparation method of acetaldehyde-based porphyrin covalent organic framework and application thereof, which comprises the following steps: step one: dispersing ligand 2', 5'-bis((ethyl sulfide) methyl)-[1,1':4',1''-triphenyl]-4,4''-diamine in acetonitrile solution to obtain solution A, and dissolving acetaldehyde-based porphyrin in dichloromethane to obtain solution B; step two: mixing solution A and solution B; step three: adding ferric chloride and acetic acid as catalysts to react under mild conditions to obtain acetaldehyde-based porphyrin covalent organic framework material, which has excellent gaseous iodine adsorption performance. The synthesis method provided by the present application has mild conditions, simplifies the high-temperature time-consuming shortcomings of traditional porphyrin-based covalent organic framework material synthesis, and realizes the synthesis of special ligand covalent organic framework.

This invention discloses a method for preparing lithium manganese iron phosphate from waste zinc-manganese dry batteries and retired lithium iron phosphate batteries, comprising the following steps: The positive electrode active powder obtained from the recycling of waste zinc-manganese dry batteries is directly used as a manganese source; the black powder from retired lithium iron phosphate batteries reacts with ferric chloride solution to generate iron phosphate precipitate, which serves as an iron source and part of the phosphorus source in the synthesis of lithium manganese iron phosphate, while simultaneously achieving the recycling of iron solution in the filtrate and the enrichment and recovery of lithium. After batching, sand milling, and spraying, the raw materials are sintered in an inert atmosphere to obtain lithium manganese iron phosphate positive electrode material. The manganese extraction process does not require acid leaching pretreatment. According to this invention, the synergistic recovery of various valuable metal elements from waste batteries is achieved. The process is simple, the material has high crystal phase purity and uniform particle distribution, and exhibits good electrochemical performance and promising prospects for industrial application.

A method for preparing magnetic amino-functionalized biochar and its application are disclosed, relating to the field of biochar preparation technology. The method involves dissolving ferrous chloride dihydrate, ferric chloride dihydrate, and ammonia in deoxygenated water, stirring until homogeneous, then adding amino-functionalized biochar. After thorough stirring, the product is collected by magnetic adsorption and finally washed to obtain magnetic amino-functionalized biochar. The magnetic amino-functionalized biochar is used for removing chromium from water. This invention provides a method for preparing magnetic amino-functionalized biochar and its application.

The utility model discloses a kind of polymeric ferric chloride finished product automatic packaging machines, it is related to polymeric ferric chloride processing equipment technical field, including support plate, the top of support plate is fixedly provided with tank, the below of tank is equipped with barrel, fixedly provided with conveying pipe between tank and barrel, the inside of tank is fixedly provided with crosspiece, the middle part of crosspiece is fixedly provided with auger rod, and the bottom end of auger rod extends to the inside of barrel and penetrates conveying pipe, the both sides of crosspiece bottom end are fixedly provided with several evenly spaced dispersion rods, the side of dispersion rod is fixedly provided with several evenly spaced support rods, the bottom end of barrel is fixedly provided with discharge pipe;The beneficial effects of the utility model are that: material can be dispersed, scattered, avoid material caking and block conveying pipe, improve the uniformity of subsequent stirring, ensure the normal quantitative discharge of subsequent screw conveying rod, facilitate the packaging of polymeric ferric chloride finished product at subsequent loading platform.

The present application relates to a kind of functional materials for organic dye adsorption and degradation and its preparation method and application, belong to pollutant degradation field.The present application uses one-step hydrothermal synthesis method, with anhydrous ferric chloride, tin chloride tetrahydrate and sodium hydroxide as raw material, successfully constructs the Fe (Sn (OH) 6) / FeSnO (OH) 5 heterojunction composite material with close interface combination.The material can realize the efficient removal of typical organic pollutants methylene blue at normal temperature and pressure, and the degradation rate can reach more than 90% in a short time, showing excellent adsorption and degradation performance.The present application has simple process, mild reaction condition, low raw material cost, avoids complex post-processing process, has good scalability and application potential.The material can provide an efficient, economical technical solution for the treatment of refractory organic pollutants in water, has significant environmental benefits and practical application value.

This invention discloses a method for preparing and using a magnetic Fenton-type catalytic carbon sheet, comprising the following steps: S1, weighing glucose and ferric chloride in a mass ratio of 5:1 and adding them to a 500mL beaker, adding 200mL of purified water, and stirring until completely dissolved; S2, sonicating the solution in a water bath at 80℃ for 3 hours, slowly adding 0.1mmol / L NaOH until the pH value is 9-11, and continuing sonication for 1 hour; S3, pouring the solution into a ceramic double-layer crucible, placing it in a vacuum drying oven and heating it at 102℃ for 24 hours, then calcining it in a muffle furnace at 700-800℃ for 2-5 hours, and removing it after the temperature drops to room temperature; S4, grinding it thoroughly in an agate mortar, passing it through a sieve, washing it successively with pure water and anhydrous ethanol, and magnetically filtering it; S5, placing the filter cake in a vacuum drying oven and drying it at 102℃ for 6 hours. h. Store in a sealed container. The magnetic Fenton-like catalytic carbon sheet prepared by this invention has uniform nano-Fe3O4 particles, high dispersibility, and a high specific surface area, making it valuable for the efficient removal of methylene blue from water.

The application relates to a safe treatment device for phosphorus-containing and arsenic-containing waste liquid, which comprises a crushing mechanism for containing the phosphorus-containing and arsenic-containing waste liquid and crushing solid matters in the waste liquid; a first closed reaction container for receiving the waste liquid from the crushing mechanism; an oxidation mechanism comprising a sodium hypochlorite storage tank one and a sodium hydroxide storage tank two; a second closed reaction container for receiving the waste liquid from the first closed reaction container; and a precipitation mechanism comprising a calcium chloride storage tank three, a lime milk storage tank four, a ferric chloride storage tank five and a polyaluminum chloride storage tank six. The application can effectively treat elemental phosphorus and simultaneously dispose of the arsenic-containing waste liquid, solves the problem that the prior art lacks a device for simultaneously and safely treating the phosphorus-containing and arsenic-containing waste liquid, reduces equipment investment and operation cost, and improves the treatment efficiency.

The application discloses a kind of stainless steel composite plate pitting test determination method, belong to corrosion detection technical field.The application measures the weight, length, width and thickness of pretreated sample, obtains sample original weight, sample length, sample width and sample thickness;Sample is soaked in closed environment, specified temperature ferric chloride solution, and is soaked to reach test time, after sample is removed and cleaned, obtain post-test sample;Measure the weight of post-test sample, obtain sample post-test weight;Calculate weight loss rate.The application pretreats sample before test, so that it is not completely exposed in ferric chloride solution, avoids the reaction of base layer and solution caused thereby, so that measurement result is more accurate;Weight loss rate is used to reflect the pitting resistance of stainless steel composite plate material with uniform corrosion not obvious, to evaluate pitting resistance, realizes accurately evaluating the pitting performance of stainless steel composite plate.

The application discloses a metal organic framework salt-alkali soil modifier and a preparation method thereof. The modifier is formed by bridging coordination of a metal cluster, inorganic ligand phosphoric acid, organic ligand and structure directing agent urea under hydrothermal conditions; the metal cluster is ferric chloride hexahydrate and / or zinc sulfate heptahydrate; the organic ligand is one or a combination of two of oxalic acid dihydrate, citric acid monohydrate and tartaric acid; and the molar ratio of the metal cluster, phosphoric acid, organic ligand, urea and deionized water in the hydrothermal reaction is 1-2:6:1-2:2.5-3:100. The modifier has the functions of improving salt-alkali soil and slow-release fertilizer, can provide sufficient nutrients for crops and significantly reduce the salt effect of the nutrients.

The application belongs to the technical field of capacitors, and discloses a nickel-iron Prussian blue supercapacitor electrode material, a preparation method thereof and a supercapacitor, which comprises the following steps: dissolving nickel chloride hexahydrate, iron trichloride hexahydrate and trisodium citrate dihydrate in water to obtain reagent A, dissolving potassium ferricyanide in water to prepare a solution to obtain reagent B; slowly adding reagent B into reagent A under room temperature, stirring, and then placing the mixed solution under room temperature, washing, centrifuging, collecting the precipitate, and vacuum drying to obtain a nickel-iron Prussian blue material PBA; by adjusting the amount of trisodium citrate and the ratio of nickel to iron, the two play a synergistic role to achieve the effect of high specific capacitance (140.25 F·g ‑1 ) and cycle stability (84.35% retention rate after 2000 cycles), and when the two synergistically act, the structural stability and redox activity of the material can be effectively enhanced, and finally the balance between high specific capacitance and excellent cycle stability is achieved.

The invention relates to a process for preparing ferric phosphate from iron-containing waste, the process comprising: a) supplying a mixture solution containing ferric chloride obtained by the acidolysis of iron-containing waste; b) adjusting the pH of the mixture solution containing ferric chloride so that 0 < pH ≤ 2 and the Fe3+ concentration is 10 to 80 g / L with an alkali compound and water, to obtain an iron source solution; c) mixing and reacting the iron source solution obtained in step b) with a calcium dihydrogen phosphate solution at a P / Fe molar ratio of 1:1 to 1.8, to obtain a suspension having a pH of 0.2 to 2; and d) carrying out aging and crystallization on the suspension, to obtain ferric phosphate. Abstract figure: Fig. 1

This invention belongs to the field of hydrometallurgical technology, specifically relating to a method for enhanced gold extraction from cyanide tailings based on magnetically controlled hydrothermal magnetization activation and manganese doping treatment. The method includes: providing cyanide tailings particles; adding the cyanide tailings particles and a biomass reducing donor to an aqueous medium to form a slurry; adjusting the pH of the slurry to obtain an alkaline reaction system; adding a magnetothermal medium of ferric oxide or ferric chloride to the slurry and stirring with MnSO4 to obtain a reaction slurry; placing the reaction slurry in a closed magnetically controlled hydrothermal reactor and conducting a hydrothermal reaction under an external magnetic field; after cooling the reaction product, performing solid-liquid separation; performing graded magnetic separation on the solid phase; leaching the non-magnetic product using a thiosulfate-ammonia system to allow gold to enter the leaching solution; adding a recyclable magnetic gold-capturing carrier to the leaching solution for adsorption and enrichment; recovering the carrier through magnetic separation and regenerating it through analysis to obtain a gold-rich solution; and recovering gold from the gold-rich solution. The above method can stably achieve a synergistic gain in gold extraction and harm reduction under low-temperature hydrometallurgical conditions.

The application relates to the technical field of drug carrier materials, in particular to a starch-based capsule and a preparation method thereof, which comprises the following steps: S1, after dialdehyde starch is gelatinized, the dialdehyde starch is mixed with a tannic acid solution, an iron chloride solution is added, uniform mixing and defoaming are carried out, and a film-forming solution is obtained; S2, a mold is immersed in the film-forming solution, preliminary drying is carried out under a set temperature and humidity condition after pulling up, and a gel film layer is formed; S3, the gel film layer after preliminary drying is demolded, humidity balance and drying are sequentially carried out, and the starch-based capsule is obtained. By adding tannic acid and a suitable amount of iron chloride, an effective crosslinking network structure is formed among starch molecules, the mechanical strength of the capsule shell is enhanced, and the hygroscopicity is reduced.

This invention discloses a preparation process for titanium anodes used in electrolytic copper foil, relating to the field of anode plate manufacturing technology. In preparing the titanium anode for electrolytic copper foil, porous titanium is pretreated and then reacted sequentially with sodium hydroxide and chloroacetic acid to obtain nanowire titanium dioxide coated porous titanium; an iridium-tantalum pentoxide / titanium anode is prepared by mixing chloroiridium hexahydrate and tantalum ethoxide to form an iridium-tantalum pentoxide coating solution; polypyrrole is polymerized and coated onto graphene oxide to obtain polypyrrole-coated graphene oxide; a composite coating solution is prepared by reacting polypyrrole-coated graphene oxide, nickel chloride hexahydrate, and ferric chloride hexahydrate, followed by reduction with hydrazine hydrate; this composite coating solution is then coated onto the iridium-tantalum pentoxide / titanium anode to obtain the titanium anode for electrolytic copper foil. The titanium anode for electrolytic copper foil prepared by this invention exhibits excellent electrocatalytic performance and service life.

This invention discloses a method for separating and enriching nickel and iron in nickel-iron alloys, as well as nickel-based recovery products. Ferric chloride, containing inherent nickel impurities, obtained from the chlorination roasting of nickel-iron alloys, is used as raw material to prepare a solution. Under ammonium-free conditions, a first iron precipitation agent is added to conduct a first iron precipitation reaction, controlling the pH at 1.5-1.8, resulting in solid-liquid separation to obtain ferric phosphate and a nickel-iron-containing filtrate. The pH of the filtrate is adjusted to 5.2-5.7 to conduct a second iron precipitation reaction, yielding an iron-containing precipitate and a nickel-containing filtrate. The pH of the nickel-containing filtrate is adjusted to 9.5-10.5 to conduct a nickel precipitation reaction, yielding a nickel-containing precipitate. This invention eliminates nickel-ammonia complexation at the source, achieving complete nickel recovery, and simultaneously producing high-purity ferric phosphate and resource-recoverable intermediate products.

This invention proposes a boron-phosphorus co-doped multi-element alloy catalyst supported on a metal oxide substrate, its preparation method, and its application. It belongs to the technical field of sodium borohydride hydrolysis hydrogen production materials. The method involves loading cobalt salts (such as cobalt chloride or cobalt nitrate), iron salts (such as ferric chloride or ferric nitrate), and hypophosphite (such as sodium hypophosphite) onto a support (such as γ-alumina or titanium dioxide) using an initial wet impregnation method. Sodium borohydride solution is added for chemical reduction, and boron is added for doping. After washing the reduction product, the catalyst is dried to obtain the supported boron-phosphorus co-doped multi-element alloy catalyst. When used as a sodium borohydride hydrolysis hydrogen production catalyst, it provides a maximum hydrogen production rate of 12729.78 mL·g under optimal conditions. cat ‑1 ·min ‑1 It produces 100% of the theoretical hydrogen yield and features good catalytic performance, simple preparation method, abundant raw materials, and low cost.

i) A step of reacting sewage sludge incineration ash containing at least one iron compound and an aluminum compound with at least one alkali metal chloride and / or at least one alkaline earth metal chloride at a temperature of 200°C to 1100°C in an inert gas atmosphere, and ii) Step of extracting and isolating the iron chloride and aluminum chloride formed in the exhaust gas stream. A process for producing iron chloride and aluminum chloride, characterized by including the following:

The application provides a preparation method of a sludge dewatering agent, which is low in production cost and free of volatility, and the preparation process is simple, so that the method is suitable for large-scale industrial production; in addition, ferric chloride is not used in the application, so that corrosion of the ferric chloride to equipment is avoided; meanwhile, carbon powder is added, so that the treatment cost is reduced, the calorific value of the finished product mud cake is increased, and the final disposal and utilization of the mud cake are facilitated, such as incineration, mixed combustion for power generation and composting, and the like, and the effect of secondary recovery and recycling is good.

This invention belongs to the field of fluorine-free solid soil acid technology, specifically relating to a fluorine-free solid soil acid and its applications. The fluorine-free solid soil acid is prepared from 20-22 parts of solid organic acid, 7-9 parts of metal salt catalyst, 1-3 parts of chelating agent, 0.5-0.7 parts of silicate inhibitor, and 65.3-71.5 parts of water. The solid organic acid is selected from one or more of maleic anhydride, maleic acid, hydroxyethylidene diphosphonic acid, and aminotrimethylene phosphonic acid. The metal salt catalyst is selected from one or more of aluminum chloride, polyaluminum chloride, ferric chloride, and zirconium oxychloride. The silicate inhibitor is selected from one or more of polyepoxysuccinic acid and polyacrylic acid. The fluorine-free solid soil acid of this invention does not generate secondary precipitation of fluorosilicates and fluoroaluminates, thus avoiding formation damage. Furthermore, the dissolution rate after 18 hours of reaction is 14.72%-16.99%, and the raw materials are solid with low toxicity and corrosiveness, which is beneficial for transportation, storage, and construction.

A method for preparing FeCuMOF nanozymes and a detection method based on FeCuMOF nanozymes are disclosed, relating to the field of nanozyme sensing and detection technology. Preparation method: S11, ferric chloride hexahydrate and copper nitrate are added to N,N-dimethylformamide and stirred until dissolved; S12, terephthalic acid is added and stirred; S13, anhydrous ethanol, ultrapure water, and triethylamine are added, stirred, and the precipitate is collected; S14, the precipitate is washed and dried to obtain FeCuMOF nanozymes. Detection method: S21, standard solutions of multiple concentrations are prepared; S22, standard reaction systems and blank control systems of different concentrations are constructed; S23, the absorbance values ​​of the standard reaction systems and blank control systems are detected; S24, a standard curve is constructed; S25, a sample detection system is constructed; S26, the absorbance value of the sample detection system is detected, and the concentration in the sample is determined according to the standard curve. This invention can solve the technical problems in the prior art where insufficient catalytic activity and selectivity of nanozymes limit their application in detection.

This application provides an electropolishing method for Invar alloy substrates, specifically tailored to the surface characteristics of Invar alloy substrates thinned by ferric chloride reduction. The method involves using the Invar alloy substrate to be treated as the anode and a pure lead plate as the cathode, simultaneously immersing both the anode and cathode in an electrolytic tank containing an electrolyte for electropolishing. The electrolyte comprises phosphoric acid, sulfuric acid, malic acid, ethylene glycol, sodium dodecylbenzenesulfonate, and deionized water in a volume ratio of 6:1:1:1:0.5:0.5. Electropolishing the Invar alloy substrate thinned by ferric chloride using the above electrolyte composition and ratio yields an Invar alloy substrate with excellent surface quality. After polishing, the surface gloss of the Invar alloy substrate is increased to ≥92 GU, exhibiting a uniform and bright mirror-like effect.

This apparatus for fixing carbon dioxide comprises a generation device and a portable unit. The generation device includes at least one among a carbonate generation unit, an iron chloride generation unit, and an iron carbonate generation unit. The portable unit supports the generation device in a transportable manner.

Disclosed is an application of a magnetic carboxyl-functionalized covalent organic framework composite as a magnetic solid-phase extraction adsorbent. The preparation method for this composite comprises the following steps: (1) firstly, taking dopamine hydrochloride as a coordinating stabilizer, and synthesizing surface-aminated magnetic iron oxide particles by coprecipitating iron (III) chloride and iron (II) chloride; and (2) then activating the surface-aminated magnetic iron oxide particles, and performing covalent cross-linking on the surfaces of the aminated magnetic iron oxide particles by taking 1, 3, 5-triformylphloroglucinol (Tp) and 4, 4′-diamino-biphenyl-2, 2′-dicarboxylic acid as building blocks, acting under the reversible catalytic action of acetic acid and using a solvothermal synthesis method, so as to prepare the magnetic carboxyl-functionalized covalent organic framework composite. The carboxyl-functionalized covalent organic framework prepared has a large specific surface area, a good mesoporous structure, a stable structure, large adsorption capacity, a short balance time and multiple adsorption forces, thereby significantly simplifying the sample pretreatment steps and shortening the sample processing time.