30results about How to "The reaction process is simple" patented technology

The invention discloses multifunctional acetylene carbon black as well as a preparation method and application thereof. The preparation method comprises the following steps: blending triethylenetetramine hexaacetic acid and acetylene carbon black in a mass ratio of (0.05-0.5): 100, and then carrying out esterification reaction under a vacuum condition, thereby obtaining the multifunctional acetylene carbon black. The preparation method comprises the following steps: modifying acetylene carbon black by adopting triethylenetetramine hexaacetic acid, and carrying out esterification reaction on triethylenetetramine hexaacetic acid with six carboxyl functional groups and acetylene carbon black with a hydroxyl functional group, so that the acetylene carbon black is modified, and the acetylene carbon black becomes multifunctional acetylene carbon black. The acetylene carbon black modified with a large number of carboxyl groups and amide groups on the semiconductive wrapping tape form rich hydrogen bonds, so that the compatibility of the acetylene carbon black and the semiconductive wrapping tape is improved.

The invention relates to the technical field of hydrogen production, in particular to equipment for preparing hydrogen from biomass, a method for preparing hydrogen from biomass and application. The equipment comprises a biomass pretreatment system and a chemical-looping hydrogen production system, wherein the biomass pretreatment system comprises a drying unit, a crushing unit and a granulating unit; the chemical-looping hydrogen production system comprises a biomass hydrogen production reduction reactor, a hydrogen purification device and a dust remover; the dust remover is connected with a regeneration storage tank and an air oxidation reactor; the air oxidation reactor is connected with the biomass hydrogen production reduction reactor; the granulating unit is connected with the biomass hydrogen production reduction reactor; a first heat exchanger is arranged between a synthesis gas outlet of the biomass hydrogen production reduction reactor and the hydrogen purification device, and a water vapor outlet of the first heat exchanger is connected with the biomass hydrogen production reduction reactor; and an oxygen-poor waste gas outlet of the air oxidation reactor is connected with the drying unit. The equipment is simple in structure, waste heat is fully utilized, energy consumption is reduced, hydrogen purity and yield are improved, and carbon dioxide is captured.

The invention discloses a polyampholyte chitosan with high polymerization degree and water solubility and a preparation method thereof, and belongs to the field of natural polymer material preparation. The polyampholyte chitosan is prepared by mixing aminosulfonic acid and one or more of glycerol, urea, lactic acid or choline chloride as a low eutectic solvent, and then adding chitosan for modification, and contains a polyampholyte of cationic groups and anionic groups. The chitosan sulfate product prepared by the invention has a small molecular weight loss, controllable modification sites, and can obtain a polyampholyte chitosan with high polymerization degree; the sulfation reaction has high efficiency, few side reactions, high product purity, good product water solubility, and extremely high application value.

The invention discloses alkali metal doped MOF-74, a gas-sensitive material, a gas-sensitive sensor and a preparation method and application of the gas-sensitive sensor, and belongs to the technical field of gas-sensitive sensors. Magnesium nitrate hexahydrate and 2, 5-dihydroxyterephthalic acid are used as raw materials, alkali metal salt is added in situ for doping, triethylamine (TEA) is used as a deprotonation agent, a reaction process is optimized, alkali metal doped MOF-74 is rapidly synthesized at room temperature, miniaturization of MOF-74 is realized on the premise that crystallinity and high porosity are not lost, and the preparation method is simple and easy to implement. The gas-sensitive property of the material is favorably improved. The alkali metal doped MOF-74 is used for the gas sensitive sensor, has excellent selectivity and high sensing response to CO2 gas, and can meet the requirements of CO2 gas detection. The preparation period is short, heating is not needed, and large-scale production is facilitated.

The invention belongs to the technical field of noble metal catalysts, and particularly relates to a bifunctional ternary supported noble metal catalyst for preparing 2-hydroxy-gamma-butyrolactone through malic acid hydrogenation and application. The invention relates to a ternary supported noble metal catalyst, which has two catalytic reaction functions of hydrogenation and lactonization, the active metal of the catalyst has a higher catalytic hydrogenation function, and the molecular sieve provides favorable reaction acidic sites for lactonization. A combination of metals Re, Ru and Pt is used as an active metal component of the catalyst; wherein in percentage by weight, the zeolite molecular sieve accounts for 82-84%, and the active metal accounts for 16-18%. According to the present invention, the high activity and high selectivity noble metal catalyst has high activity and high selectivity under neutral and low temperature conditions, and the hydrogenation and the lactonization reaction are simultaneously performed in the synthesis system by using the bifunctional ternary metal catalyst and using the malic acid as the raw material so as to directly obtain the alpha-hydroxy-gamma-butyrolactone;

The invention discloses a preparation method of octafluorocyclopentene, which comprises the following two steps of: firstly, reacting 4-cyclopentene-1, 3-diketone with a selective fluorine reagent in acetonitrile under the condition of reflux to generate a crude product second mixture, purifying the second mixture, and putting the purified second mixture into a second-step reaction to obtain the octafluorocyclopentene. Reacting with diethylamino sulfur trifluoride in dichloromethane to generate a third mixture; the method has the advantages of environment-friendly and simple reaction process, no generation of three wastes, low cost, easy obtaining, simple reaction process, mild reaction, no generation of waste gas pollution even if nitrogen protection is needed, easy operation, and suitableness for industrial production.

The invention provides a preparation method of a triazine halamine antibacterial agent and a precursor thereof, and also provides a preparation method of a liquid ammonia mercerized antibacterial fabric. The preparation method of the liquid ammonia mercerizing antibacterial fabric comprises the following steps: soaking a fabric in anhydrous liquid ammonia under a tension-free condition, drying and cleaning; dissolving a halamine antibacterial precursor and a metal salt catalyst in water to prepare an antibacterial finishing solution, and dipping the liquid ammonia mercerized fabric in the antibacterial finishing solution; adding a solid alkali agent into the antibacterial finishing liquid, continuously dipping the liquid ammonia mercerized fabric, washing with water, and drying; soaking the fabric in a sodium hypochlorite solution for reaction, taking out and drying to obtain the liquid ammonia mercerizing antibacterial fabric. The liquid ammonia is adopted for pretreatment of the fabric, the excellent mercerizing effect is given to the fabric, meanwhile, the grafting rate of the halamine antibacterial agent is remarkably increased, the antibacterial agent can be more firmly finished on the fabric at the low temperature, the reaction process is simple, the production speed is high, efficiency is high, no toxicity and no pollution are achieved, and the processing requirements of ecological textiles are met.

The invention relates to the technical field of plastic processing, in particular to a preparation method of hyperbranched cardanol-based self-plasticizing polyvinyl chloride. Cardanol, polyvinyl chloride, glycidol, organic anhydride and aminothiophenol are used as main raw materials, the cardanol and the glycidol are subjected to a hyperbranched reaction to obtain cardanol polyglycerol with a hyperbranched structure, and then the cardanol polyglycerol and the organic anhydride are subjected to an esterification reaction to obtain ester-terminated cardanol polyglycerol. Then double bonds on a branch chain of the anacardol are epoxidized by using a peroxide source to obtain a hyperbranched anacardol plasticizer, amino thiophenol is adopted as a grafting agent, and the hyperbranched anacardol-based self-plasticizing polyvinyl chloride is obtained by grafting the hyperbranched anacardol plasticizer to polyvinyl chloride by using a click reaction. The main raw materials are renewable and do not depend on petroleum; the preparation process is simple and reasonable and low in energy consumption; the product has good thermal stability and has no hidden danger that the plasticizer seeps to the environment. The self-plasticized polyvinyl chloride prepared by the invention has good toughness and processability.

This invention belongs to the field of environmental water treatment, specifically disclosing the application of 3-aminopropanesulfonic acid modified polyaspartic acid in the preparation of compound scale inhibitors, and further providing a method for preparing the 3-aminopropanesulfonic acid modified polyaspartic acid, and applying it in the preparation of compound scale inhibitors, thereby providing a composite scale inhibitor. This scale inhibitor also contains a terpolymer acrylic acid copolymer, which, when used in combination with the above-mentioned 3-aminopropanesulfonic acid modified polyaspartic acid, can fully exert the synergistic effect of the two scale inhibitors, giving the scale inhibitor excellent water solubility, high scale inhibition efficiency, and a wide range of applications.

The invention discloses a high-stability povidone-iodine preparation, including polyvinylpyrrolidone K30 15.0%-25.0%, refined iodine 10.0%-12.0%, ethanol 20.0%-30.0%, potassium iodide 2.0-4.0%, organic acid 0.1-1.0%, organic acid salt 0.1-2.0%, surfactant 1.0%-3.0%, stabilizer 1.0%-5.0%, and the rest is water. Compared with the prior art, the invention has the beneficial effects that the povidone-iodine preparation obtained by the invention has good stability, low reaction temperature during the reaction, short total reaction time (only 4h-6h), high iodine yield (low degradation rate), can improve production efficiency, and reduce production energy consumption.

The application discloses a kind of nitrogen-rich oxygen three-component high-energy density materials and synthesis method thereof.By introducing high-energy or low-sense energetic anion and cation to regulate neutral compound performance is the most direct and effective way to alleviate the contradiction between energy and stability of energetic material,can fundamentally realize the dual promotion of energy and stability.Nitrogen-rich compound 4,5-diamino-3-aminomethyl-1,2,4-triazole is used as substrate,ionization reaction is carried out with perchloric acid,then hydroxylamine ion is introduced by intermolecular force,obtains nitrogen-rich oxygen three-component high-energy density material.The synthesis method has the characteristics of easy-to-obtain raw materials,operation is simple,high safety,high yield and the like.

The application discloses a preparation method of 2,2-di(3,3'-epoxycyclohexyl)propane, which uses a cycloalkadiene compound 2,2-di(3,3'-cyclohexenyl)propane as raw material, adopts a titanium silicalite / heteropoly acid phase transfer homogeneous catalytic system, uses hydrogen peroxide as an oxidant, catalytically synthesizes mono-epoxide and di-epoxide, and finally separates, refines and purifies the mono-epoxide (2,3-epoxycyclohexyl-2,3-cyclohexenyl)propane and the target product di-epoxide 2,2-di(3,3'-epoxycyclohexyl)propane through molecular distillation. The application no longer uses a traditional peroxycarboxylic acid process, and the obtained epoxidation product has high yield, high epoxy value, low colority and low chlorine content; meanwhile, the reaction system of the epoxide is simple, the process condition is mild, the reaction time is short, the reaction is safe and controllable, the environment is friendly, the technical and economic requirements can be met, the operation can be continuous, and the application is particularly suitable for occasions of large-scale production.

The invention discloses a synthesis method of an FLT3 inhibitor of quinatinib dihydrochloride. According to the method disclosed by the invention, the raw material drug of the quinatinib dihydrochloride is synthesized and prepared through seven chemical reactions including Boc protecting group feeding, bromination reaction, condensation ring closing reaction, Boc protecting group removal, phosgene condensation reaction, final etherification reaction to obtain the quinatinib, and final salification. The method has the advantages of wide raw material source, low cost, simplicity in operation, high product recovery rate, easiness in industrial industrialization and the like.

The invention discloses high-whiteness sodium aluminum silicate as well as a preparation method and application thereof. The preparation method comprises the following steps: adding an aluminum salt solution and water into a reaction kettle until the pH value is 4-6, stirring and heating to 45-65 DEG C; an aluminum salt solution and a sodium silicate solution are added for a reaction, the pH value is 4-6, the temperature is 45-65 DEG C, and the reaction time is 10-30 min; continuously adding the sodium silicate solution until the pH value is adjusted to 8-10; the sodium silicate solution and the aluminum salt solution are continuously added, the pH value is 8-10, the reaction is carried out for 50-70 min, and aging is carried out after flow merging is finished; adding a sulfuric acid solution, adjusting the pH value to 3.5-4.5, adding a masking agent, and stirring; and carrying out solid-liquid separation, washing, pulping and drying on the solution obtained in the previous step to obtain a high-whiteness sodium aluminum silicate product. The high-whiteness sodium aluminum silicate prepared by the method is high in whiteness and good in dispersity, and has the advantages of being simple in production process, low in cost and capable of realizing large-scale production.

The invention belongs to the field of organic chemical synthesis, and particularly relates to a preparation method of an imino aryl compound containing uracil. The imino aryl compound containing uracil is prepared through a series of reactions. The purity of the product finally obtained through the synthesis route is 99% or above, meanwhile, high-toxicity and difficult-to-treat waste water is not generated in the process route, the used raw materials are cheap and easy to purchase, the reaction process is simple, the condition is mild, the requirement for equipment is low, the process cost is low, and industrial production is easy to carry out.

The invention relates to a method for preparing tetrahydrofuran by liquid-phase catalytic hydrogenation of maleic anhydride. According to the method, maleic anhydride is used as a raw material and is subjected to one-step hydrogenation in a liquid-phase organic environment in the presence of a ternary metal silicide catalyst to prepare tetrahydrofuran. The ternary metal silicide is a Ti-Ni-Si series catalyst, the general formula of the ternary metal silicide is Ti < x > Ni < y > Si < z >, and x is equal to 1; y is equal to 1-3; z is equal to 1 to 1.5; and each represents the number of atoms of Ti, Ni, and Si. When 1, 4-dioxane is used as a solvent, the catalyst is used for maleic anhydride liquid phase hydrogenation, the conversion rate of maleic anhydride is close to 100% at the temperature of 200-300 DEG C and the pressure of 1-4 MPa, the selectivity of tetrahydrofuran is greater than 70%, high selectivity is shown, meanwhile, the catalyst has high corrosion resistance to an acid environment in a reaction system, and high stability is shown. And the preparation process is simple, the use of a noble metal catalyst is reduced, and the method has a better industrial application prospect.

The present invention relates to the technical field of lithium-ion batteries, and in particular to an ammonium ferrous manganese phosphate precursor, a preparation method thereof, and an application thereof. The ammonium ferrous manganese phosphate precursor of the present invention comprises ammonium ferrous manganese phosphate crystals and carbon atoms located inside the lattice and / or on the lattice surface of the ammonium ferrous manganese phosphate crystals; in the ammonium ferrous manganese phosphate precursor, the content of C is ≥0.3wt%. The preparation method of the ammonium ferrous manganese phosphate precursor comprises the following steps: reacting a mixed solution containing a phosphorus source, an iron source, a manganese source, and a reducing carbon source with ammonia water under an inert atmosphere to obtain the ammonium ferrous manganese phosphate precursor. The ammonium ferrous manganese phosphate precursor of the present invention has no impurities, and a material with better conductivity and specific capacity can be obtained by calcining the precursor.

The invention discloses a preparation method of 2-hydroxybenzimidazole, which comprises the following steps of: introducing carbonyl fluoride gas into a reactor filled with o-phenylenediamine dissolved by a solvent in a bubbling form for stirring reaction, introducing the carbonyl fluoride gas into the reactor, stirring for 4-48 hours, purging reaction liquid by using gas, removing carbonyl fluoride in the reaction liquid, filtering, washing, and drying to obtain the 2-hydroxybenzimidazole. And carrying out reduced pressure distillation to remove the solvent so as to obtain the 2-hydroxybenzimidazole. The method has the advantages of environment-friendly and simple reaction process, no generation of three wastes, low cost, easy obtaining, simple reaction process, mild reaction, no need of nitrogen protection, no generation of waste gas pollution, easy operation, and suitableness for industrial production.

The application discloses a kind of nitrogen-rich high-energy anti-perovskite materials and preparation method thereof, respectively with nitrogen-rich compound 5,5-bis-tetrazole and 3,5-dinitramino-1,2,4-triazole as negative divalent ion and negative monovalent ion component raw material, with hydroxylamine as positive monovalent ion component raw material, three components are integrated by ionization reaction, and nitrogen-rich anti-perovskite material ANP-1 is obtained.The synthesis method of the application has the characteristics of easy to obtain raw materials, simple operation, high safety, high yield and the like.

The invention relates to a green synthesis process of tetraethoxysilane. The activated monatomic silicon and catalyst mixture directly reacts with ethanol in an electrolytic cell, the electrolytic cell contains a promoter and an electrolyte, and tetraethoxysilane is synthesized by applying voltage under heating and stirring conditions. Compared with a traditional method, the method has the advantages of being simple in process, low in energy consumption and environmentally friendly. The selectivity of tetraethoxysilane synthesized by the method exceeds 90%, the silicon powder conversion rate exceeds 95%, and the yield is higher than 80%.

The application discloses alkali metal doped MOF-74, a gas sensitive material, a gas sensitive sensor and a preparation method and application thereof, and belongs to the technical field of gas sensitive sensors. The application takes magnesium nitrate hexahydrate and 2,5-dihydroxyterephthalic acid as raw materials, in-situ adds alkali metal salt doping, takes triethylamine (TEA) as a deprotonating agent, optimizes a reaction process, rapidly performs synthesis of the alkali metal doped MOF-74 at room temperature, realizes miniaturization of the MOF-74 without losing crystallinity and high porosity, and is favorable for improving the gas sensitive performance of the material. The alkali metal doped MOF-74 is used for the gas sensitive sensor, has excellent selectivity and high sensing response to CO2 gas, and can meet the demand of CO2 gas detection. Moreover, the preparation period is short, heating is not needed, and the method is favorable for large-scale production.

The present application relates to a kind of method for improving the content of meaty substance in thiamine degradation product and the application of degradation product, belong to food processing technical field.Through the thiamine hydrochloride, food additive and solvent are added in closed reaction container, stirring reaction 10-180min under 80-140 ℃, after reaction, cooling, obtain thiamine degradation product.The method can greatly improve the generation amount of meaty compound in thiamine degradation process, thiamine degradation product can be directly used in reaction essence preparation, enhance meaty, reduce cost.In addition, by edible oil or capric caprylic acid glyceride, thiamine degradation product is extracted, separated and dried, obtain meaty seasoning oil, remove bitter substance in taste, for meaty reaction or flavoring product, also can play the role of enhancing meaty, reducing cost, with wide application prospect.

The invention discloses a composite catalyst for synthesizing tetrahydrofuran-3-methanol and a method for synthesizing tetrahydrofuran-3-methanol by using the composite catalyst. The composite catalyst comprises a magnesium-aluminum layered bimetallic composite oxide Mg (Al) Ox, a magnesium-aluminum-zirconium layered multi-metal composite oxide Mg (AlZr) Ox, a magnesium-aluminum-copper layered multi-metal composite oxide Mg (AlCu) Ox and a magnesium-aluminum-nickel layered multi-metal composite oxide Mg (AlNi) Ox. The invention also discloses a method for synthesizing tetrahydrofuran-3-methanol by using the composite catalyst. The method has the advantages of simple synthesis process, high reaction selectivity and yield, mild reaction conditions, safety and reliability, and is suitable for industrial production.

The invention belongs to the field of drug synthesis, and specifically relates to a method for preparing 6-aminocaproic acid by one-step synthesis of cyclohexanone. The method uses cyclohexanone and hydroxylamine, which are abundant in source, as raw materials, and obtains 6-aminocaproic acid by one-step ring-opening reaction. The reaction process is simple and the post-treatment is convenient. Excessive addition of cyclohexanone allows the cyclohexanone to serve as both a reaction raw material and a reaction reagent during the reaction, thereby ensuring that the reaction can proceed in a forward direction and improving the conversion rate. The preparation method of the invention has mild reaction conditions, and the yield of the obtained 6-aminocaproic acid can reach more than 85%, and the purity is as high as more than 97%, which is suitable for large-scale production.

This invention relates to the field of perovskite solar cells, specifically a method for preparing high-purity formamidinium hydroiodate, comprising the following steps: dissolving formamidinium acetate in hydroiodic acid solution and stirring to obtain a precursor solution of formamidinium hydroiodate; heating the solution in an oil bath to obtain a crude product of formamidinium hydroiodate; cooling the product and adding an ethanol solution, then heating again until completely dissolved to obtain a hot saturated solution; removing the hot solution and vacuum filtering, and pouring the resulting mother liquor into a crystallizing dish for crystallization; after crystallization, adding diethyl ether for washing; placing the washed flaky crystals in an oil bath and adding ethanol again for heating to dissolve, then filtering, and pouring the resulting mother liquor back into a crystallizing dish for low-temperature crystallization; repeating the above steps three times; and vacuum drying the obtained product to obtain formamidinium hydroiodate, which is the target product. The formamidinium hydroiodate of this invention, when applied to a perovskite layer, can greatly improve the photovoltaic performance of perovskite solar cells and significantly improve the stability of the device.

The invention discloses a tubular kaolin modified ammonium polyphosphate functional monomer, wherein the functional monomer is prepared by mixing nano-SiO 2 The ammonium polyphosphate treated by grafting, epoxy coating or melamine coating is embedded in the tubular kaolin to obtain the obtained product. The functional monomer formed by the organic-inorganic hybrid reaction of ammonium polyphosphate and tubular kaolin maximizes the synergy of the advantages of ammonium polyphosphate and tubular kaolin, significantly improves its water resistance, and greatly improves its carbonization effect and flame retardant efficiency, and can be directly applied to the flame retardant of related materials. The reaction process of the present invention is simple, the raw materials are easily available, the operation is convenient and safe, and it is easy to promote and apply, and has good industrial promotion and application value.

The present invention relates to a three-ligand bimetallic complex catalyst and a preparation method thereof, wherein the structure is Ma[M``(CN)6]b·(t-BuOH)m·(Poly)n·[M`c(PO4)d]y, wherein the atomic molar ratio of M` to M`` is 1.5-3:1, and M` is selected from Zn 2+ , Fe 3+ 、Ni 2+ Sn 4+ , Pb 2+ ,M`` is selected from Co 3+ , Fe 3+ , Ir 3+ , a, b, c, d are ion coefficients, satisfying the balance of positive and negative charge numbers, m, n, y are the first ligand system number, the second ligand system number and the third ligand system number respectively, the weight of the first ligand t-BuOH is 0.05-10% of the total weight of the three-ligand bimetallic complex catalyst; the weight of the second ligand Poly is 5-20% of the total weight of the three-ligand bimetallic complex catalyst; the weight of the third ligand phosphate is 4-30% of the total weight of the three-ligand bimetallic complex catalyst; the three-ligand bimetallic complex catalyst DMC of the present invention has a high temperature thermal stability coefficient of less than or equal to 1.2% at 200-250°C, and has strong anti-deactivation performance.

The invention relates to the technical field of electromagnetic wave absorbing materials, and provides a preparation method and application of a bismuth sulfide-reduced graphene oxide composite material. The invention aims to solve the problems of high cost, environmental pollution and insufficient absorption capacity of a single material of a traditional metal material absorbent. According to the main scheme, the preparation method comprises the following steps: synthesizing a graphene oxide nanosheet, taking ethylene glycol as a solvent medium, taking polyvinylpyrrolidone K30 as a surfactant, adding bismuth nitrate pentahydrate and thiourea, and performing solvothermal reaction to prepare the bismuth sulfide-reduced graphene oxide composite material in situ. The electromagnetic functional material comprises a microwave absorbing material and an electromagnetic shielding material, and the composite material is used as a filling agent and is mixed with paraffin or epoxy resin to be coated on the surface of a protected object, so that electromagnetic wave absorption and shielding are realized.

The invention relates to the technical field of light hydrocarbon conversion, in particular to a method and a device for efficiently converting light hydrocarbon to increase additional value, and the method comprises the following steps: reacting the raw material light hydrocarbon through a supergravity reactor filled with a catalyst and a second reactor, and condensing and separating the reaction product to obtain a gas-phase component rich in propane and a liquid-phase component rich in aromatic hydrocarbon. According to the method, light hydrocarbon with low additional value is subjected to isomerization, catalytic cracking, aromatization, hydrogen transfer and other reactions, and a liquid-phase product rich in aromatic hydrocarbon and a propane gas-phase product with high selectivity are obtained. The method disclosed by the invention is simple in reaction process and short in flow, the product is rich in aromatic hydrocarbon and propane at the same time, the additional value of light hydrocarbon is improved, and high-valued utilization of low-weight light hydrocarbon resources is realized.

The invention discloses a simple and efficient integrated potassium ferrate preparation device and method, which relates to the technical field of solid potassium ferrate preparation, and comprises: a mixing box, which can mix sodium hypochlorite solution with potassium hydroxide solution to form an alkaline sodium hypochlorite solution, a preparation box which can mix alkaline sodium hypochlorite solution with trivalent iron solid powder to form a potassium ferrate solution, a centrifugal filter device which can centrifugally filter the potassium ferrate solution to form a filtrate and a potassium ferrate solid raw material, the potassium ferrate solid raw material is mixed with an alkali solution in a solid collector to form a potassium ferrate solid coarse material, a purification device which can rinse the potassium ferrate solid coarse material to form a potassium ferrate solid fine material, and a drying device which can dry the potassium ferrate solid fine material to form a potassium ferrate solid product. The invention simplifies the preparation process, reduces the maintenance time caused by the independence difference between the equipment, improves the preparation efficiency, improves the purity and product quality of the potassium ferrate solid, and saves the preparation cost.