76 results about "MANGANESE ACETATE" patented technology

The invention discloses a photocatalytic material with a baseball-shaped structure as well as a preparation method and application of the photocatalytic material, and belongs to the technical field of photocatalytic synthesis of ammonia. The invention discloses a photocatalytic material with a baseball-shaped structure. The photocatalytic material comprises FeMOF with a rod-shaped structure and MnMOF with a spherical structure, the photocatalytic material with the baseball-shaped structure takes FeMOF with a rod-shaped structure as a substrate, and MnMOF with a spherical structure grows on the FeMOF with the rod-shaped structure; and the MnMOF with the spherical structure contains acetate ions. The preparation method comprises the following steps: dissolving an iron source and a manganese source in a solvent, adding an organic ligand, carrying out ultrasonic treatment, and carrying out a hydrothermal reaction; the manganese source is manganese acetate tetrahydrate. According to the photocatalytic material with the baseball-shaped structure, MnMOF with the spherical structure uniformly grows on FeMOF with the rod-shaped structure to form an electron and hole conversion channel, so that the electron and hole transmission rate is enhanced, the photocatalytic performance of the bimetal organic framework structure is enhanced, and the yield of photocatalytic synthesis ammonia is remarkably improved.

The application discloses a kind of potassium-doped chain-like trimanganese tetroxide positive electrode materials and its preparation method and application, belong to the field of aqueous zinc-ion battery, preparation method includes: configuration isopropanol and deionized water mixed solution with a portion of.In magnetic stirring, manganese acetate, potassium chloride and nitrilotriacetic acid are dissolved into mixed solution, K-Mn-NTA, i.e.K-Mn-NCs precursor is prepared by hydrothermal method;Afterwards, K-Mn3O4-NCs is prepared by annealing method;Finally, polyaniline is in-situ polymerized on K-Mn3O4-NCs to obtain K-Mn3O4-NCs@PANI;The positive electrode material of the application is applied to zinc-ion battery, can improve the cycle performance and rate capability of zinc-ion battery, improve the conductivity of positive electrode material while inhibiting the dissolution of Mn, improve the electrochemical performance of zinc-ion battery.

This disclosure presents a pure-phase alkaline earth metal Mn-based perovskite catalyst and its preparation method, belonging to the field of catalytic material preparation technology. The preparation method includes: weighing the A-site ion raw material corresponding to the product and manganese acetate, adding deionized water and stirring until completely dissolved, then continuing stirring for a first time to obtain a metal ion solution; adding a complexing agent to the metal ion solution, stirring until glycine is completely dissolved, then continuing stirring for a second time to form a stable complex solution; evaporating the complex solution under water bath conditions to a viscous liquid, and then heating the viscous liquid to obtain a powdered precursor; calcining the powdered precursor, and cooling to obtain a pure-phase AMnO3 perovskite catalyst powder free of impurities. By optimizing the complexation process and calcination parameters, stable preparation of pure-phase AMnO3 perovskite with Mg, Ca, Sr, and Ba at the A-site is achieved, while ensuring excellent catalytic performance of the catalyst.

The invention discloses a photocatalyst for hydrogen production by reforming a formaldehyde solution and a preparation method of the photocatalyst, and belongs to the crossing field of catalyst preparation and a hydrogen energy technology. The photocatalyst is a bimetallic structure material with different Mn and Ni molar ratios, and the molecular formula of the photocatalyst is MnxNiy / C3N4. The preparation method comprises the following steps: adding manganese acetate and nickel chloride in different proportions to adjust the feeding ratio of Mn to Ni in the catalyst, uniformly dispersing the mixture in deionized water containing C3N4, dropwise adding a sodium borohydride solution, continuously stirring to obtain a precursor, and calcining in a hydrogen atmosphere to obtain the catalyst. The photocatalyst can synchronously realize formaldehyde degradation and stable hydrogen production, and the hydrogen production rate can reach 134.53 mmol.h <-1 >. G <-1 >. The photocatalyst shows excellent photocatalytic formaldehyde reforming hydrogen production performance under the mild reaction condition without a sacrificial agent, the problem that a traditional catalyst depends on the sacrificial agent can be solved, and the dual benefits of pollutant degradation and clean energy preparation can be achieved through efficient conversion of formaldehyde.

The invention belongs to the technical field of battery materials, and provides a sea urchin-shaped Mn2O3 positive electrode material and a preparation method and application thereof. The preparation method comprises the following steps: mixing manganese acetate, polyvinylpyrrolidone and ethanol to obtain a mixed solution; mixing trimesic acid and ethanol to obtain a trimesic acid solution; mixing the mixed solution and a trimesic acid solution, heating and stirring to obtain a precursor; and calcining the precursor. The Mn2O3 positive electrode material provided by the invention has a sea urchin-shaped morphology, provides more reaction active sites, has a relatively high specific surface area, increases the contact area with an electrolyte, accelerates electrochemical reaction, and improves the electrochemical activity and structural stability of an aqueous battery; the sea urchin-shaped morphology is beneficial to relieving volume expansion caused by the positive electrode material in the charging and discharging process, and the cycling stability is improved; the preparation method is simple, raw materials are easy to obtain and low in cost, the method is simple, and the prepared sea urchin-shaped Mn2O3 positive electrode material is good in controllability and suitable for large-scale production.

This invention discloses a method for coupling physicochemical treatment and biodegradation of plastics. The method includes the following steps: S1. Mixing plastics, organic solvents, and a metal catalyst, and reacting to degrade them to obtain organic products. The metal catalyst is cobalt acetate and / or manganese acetate; S2. Biodegrading the organic products from step S1 using a mixed colony, which includes *Pseudomonas*, *Bacillus*, *Flavobacterium*, and *Rhodococcus*. This invention uses cobalt acetate and / or manganese acetate as metal catalysts. The catalytic oxidation of the metal catalyst can efficiently depolymerize traditional plastics, overcoming the bottleneck of C-C bond breaking that is difficult for microorganisms to achieve. It can successfully convert plastics into organic products mainly composed of dicarboxylic acids, benzoic acid, and terephthalic acid, and the mixed colony process completely mineralizes the organic products. This method achieves complete removal of plastics without producing any toxic or harmful substances.

The invention discloses a peach ketone synthesis method, which relates to the technical field of essence and perfume synthesis, and comprises the following steps: adding cyclopentanone and glacial acetic acid into a reaction container, starting stirring, adding manganese acetate (II) and cobalt acetate (II), and then adding acetic anhydride; introducing dried air below the liquid level, heating to 80-100 DEG C, dropwise adding D-limonene, and carrying out a heat preservation reaction after dropwise adding is finished; gC monitors the reaction endpoint, and the reaction is stopped when the product purity of the reaction liquid is not increased any more; after the reaction is finished, filtering, carrying out reduced pressure distillation to recover cyclopentanone, glacial acetic acid and unreacted D-limonene, after the recovery is finished, adding methanol and n-heptane into kettle liquid, carrying out water extraction, washing and liquid separation, washing an organic phase with a sodium bicarbonate aqueous solution, carrying out reduced pressure distillation on the organic phase to recover n-heptane, and after the recovery is finished, obtaining a peach ketone crude product; and carrying out crude drawing and rectification on the peach ketone crude product to obtain a peach ketone finished product. The method has the advantages of mild reaction conditions, low safety risk and few three wastes, and can obtain a high-purity peach ketone finished product.

The application belongs to the field of fine chemical industry and provides a catalyst system and a continuous process for producing trimellitic anhydride, which comprises: a first-stage oxidation catalyst composed of 0.02-1% of cerium acetate and 0.5-5% of hydrogen peroxide; and a second-stage oxidation catalyst composed of 0.01-0.05% of copper acetate and 0.01-1% of manganese acetate. The application reduces the types and addition amount of catalysts, reduces the metal content in the product, and improves the yield of the product. Meanwhile, the application designs a continuous process flow, realizes continuous and efficient oxidation of trimethylbenzene, and realizes continuous production of rapid anhydride formation. Through continuous removal of acetic acid and water in the oxidation and anhydride formation processes, the reaction heat and product water are removed, the process is intensified, the forward reaction is promoted, and then the solvent acetic acid is reused through rectification separation. In addition, the continuous production process also solves the technical defect problems existing in the batch method.

The application belongs to the field of catalysis technology, and discloses a carbon sponge supported nanometer array monolithic catalyst, a preparation method and application thereof, and comprises the following steps: (1) preparing nitrogen-doped carbon sponge; (2) preparing a precursor solution: dissolving metal salt in water, then adding a precipitant to prepare the precursor solution; the metal salt is manganese acetate and metal nitrate, and the metal nitrate is rare earth metal nitrate and / or transition metal nitrate; (3) adding a template agent to the precursor solution, stirring until completely dissolved, adding nitrogen-doped carbon sponge, then performing hydrothermal reaction, cooling, washing, and drying to obtain the carbon sponge supported nanometer array monolithic catalyst. The preparation method is green and efficient, the denitration efficiency of the prepared catalyst can reach 100%, the catalyst has high sulfur and water resistance, and the waste catalyst is easy to handle.

The invention relates to the technical field of SCR denitration catalyst preparation, in particular to an environment-friendly strong-arsenic-resistance denitration catalyst and a preparation method thereof.The preparation method comprises the following steps that anatase type TiO2 or a commercial vanadium-titanium-based catalyst, KMnO4 and manganese acetate are evenly mixed and subjected to ball milling, and mixed powder is obtained; dissolving an auxiliary agent precursor salt in an organic solvent, adding the mixed powder, and violently stirring to obtain a mixed solution A; dissolving NaOH or KOH in an organic solvent, and slowly adding into the mixed solution A to obtain a mixed solution B; transferring the mixed solution B into a hydrothermal kettle for hydrothermal crystallization, cooling and centrifuging to obtain sediment, and washing and drying the sediment to obtain the environment-friendly strong arsenic-resistant denitration catalyst. The catalyst prepared by the method has the effects of wide active temperature window and excellent arsenic poisoning resistance.

This invention discloses a baseball-shaped photocatalytic material, its preparation method, and its application, belonging to the field of photocatalytic ammonia synthesis technology. The baseball-shaped photocatalytic material comprises rod-shaped FeMOF and spherical MnMOF. The baseball-shaped photocatalytic material uses rod-shaped FeMOF as a substrate, with spherical MnMOF grown on top of the rod-shaped FeMOF. The spherical MnMOF contains acetate ions. The preparation method involves dissolving an iron source and a manganese source in a solvent, adding an organic ligand, and ultrasonically treating the mixture, followed by a hydrothermal reaction. The manganese source is manganese acetate tetrahydrate. This invention's baseball-shaped photocatalytic material, through the uniform growth of spherical MnMOF on rod-shaped FeMOF, forms an electron-hole conversion channel, thereby enhancing the electron-hole transport rate, improving the photocatalytic performance of the bimetallic organic framework structure, and significantly increasing the yield of photocatalytic ammonia synthesis.

The invention discloses a method for removing trimethylamine through catalysis of a manganous-manganic oxide catalyst, and belongs to the technical field of atmospheric pollution control in environmental chemical engineering. The preparation method comprises the following steps: dissolving manganese acetate tetrahydrate in a mixed solution of ethylene glycol and water, heating, then adding a Na2CO3 solution in a nitrogen atmosphere, stirring for reaction, and then washing, drying and calcining to obtain a spherical manganous-manganic oxide catalyst; and finally, in a nitrogen atmosphere containing trimethylamine and oxygen, realizing catalytic removal of the trimethylamine by the spherical manganous-manganic oxide catalyst at 50-250 DEG C. By controlling the morphology of the manganous-manganic oxide catalyst, the obtained spherical manganous-manganic oxide catalyst can completely catalyze and decompose trimethylamine at a relatively low temperature (175 DEG C), and the spherical manganous-manganic oxide catalyst does not have an obvious inactivation phenomenon when the degradation reaction of the spherical manganous-manganic oxide catalyst on the trimethylamine is performed for 45 hours. When the trimethylamine is catalytically removed by the manganous-manganic oxide catalyst, the spherical manganous-manganic oxide catalyst has excellent nitrogen and carbon dioxide selectivity.

The invention discloses a preparation method of spherical manganous-manganic oxide particles for well drilling or well cementation, which is characterized in that manganese nitrate and manganese acetate are compounded to realize the coupling of rapid oxidation and mild decomposition, effectively inhibit shell burst and hollow structure and improve the density and integrity of the particles; the introduced polyvinyl alcohol and citric acid can make the fog drop drying process more stable, and the problems of carbon residues and impure phases caused by a traditional surfactant are avoided. Furthermore, a three-stage spray pyrolysis method is adopted, stable evaporation, rapid phase formation and low-temperature curing of the solvent are achieved, and the problems of agglomeration, secondary sintering and insufficient crystal form development in the prior art are solved. The prepared spherical manganous-manganic oxide particles are concentrated in particle size, high in density and good in sphericity degree, can effectively reduce the viscosity of cement paste and reduce the settlement risk, have excellent suspension stability and flowability, are suitable for weighting requirements of high-density oil well cement paste and drilling fluid, and have wide application prospects in oil and gas drilling and well cementation.

The application discloses a kind of low-defect manganese-based prussian blue under solid-liquid dynamic balance fast preparation method, comprising the following steps: S1, sodium citrate is dissolved in deionized water, then add manganese acetate and ascorbic acid, form the solution A containing manganese complex;Wherein, the molar ratio of sodium citrate, manganese acetate and ascorbic acid is (4.5-5.5): 1:(0.3-0.4);S2, sodium ferrocyanide is added to deionized water, stirring is formed at a set temperature containing unsolved sodium ferrocyanide solid supersaturated suspension B;Wherein, the addition amount of sodium ferrocyanide is far more than its saturated solubility at the temperature, so that the system maintains solid-liquid two-phase equilibrium state;Crystalline integrity is higher: thanks to "whole process dynamic saturation" environment, the manganese-based prussian blue prepared by the application has more obvious monoclinic phase characteristics (corresponding XRD double peak is obvious, intensity is obvious, signal-to-noise ratio is good) compared with comparative document, lattice vacancy and coordination water content are significantly lower than comparative document scheme, and electronic conductivity is increased by nearly 50%.

The invention discloses a novel sacrificial catalyst for medium-high temperature H2S removal and short-chain alkane catalytic oxidation as well as a preparation method and application of the novel sacrificial catalyst. The catalyst is prepared by a hydrothermal method and comprises the following specific steps: dissolving manganese acetate in deionized water, and sequentially adding concentrated nitric acid, potassium permanganate and cerous nitrate according to a certain proportion; after uniformly mixing, transferring the precursor solution into a hydrothermal kettle, and carrying out crystallization reaction; and washing, drying, grinding and calcining the obtained precipitate to finally obtain the composite metal oxide catalyst. According to the present invention, under the medium-high temperature environment of 250-500 DEG C, the complete removal of H2S can be achieved, the H2S is not released in the form of SO2, and the poisoning effect of H2S on the post-catalyst is delayed; meanwhile, the sacrificial agent also has a short-chain alkane catalytic oxidation function, and shows good catalytic activity to ethane.

The application discloses a synthesis method of a lithium nickel manganese oxide positive electrode material and relates to the technical field of lithium ion battery materials, aiming at solving the problems of complex post-treatment after using nitrate raw materials, poor product morphology after spraying acetate raw materials and influence on performance; the method comprises the following steps: dissolving nickel acetate, manganese acetate and ammonium nitrate in deionized water to obtain a mixed solution; the mixed solution is spray dried to prepare mixed acetate of nickel and manganese; the mixed acetate is heat-treated in an oxygen atmosphere to obtain a nickel manganese oxide precursor; the nickel manganese oxide precursor is mixed with a lithium salt and then heat-treated in an oxygen atmosphere to obtain the lithium nickel manganese oxide positive electrode material; the spray drying method is adopted to prepare the precursor, thus avoiding the disadvantages of uneven precipitation and complex post-treatment of the reaction solution in the coprecipitation method, and the acetate is adopted to replace the nitrate, thus avoiding the complex post-treatment; in addition, the added ammonium nitrate can solve the problem of poor product morphology caused by the acetate raw material.

The invention relates to the technical field of hard carbon negative electrode materials, in particular to a hard carbon negative electrode material and a preparation method and application thereof. The hard carbon negative electrode material is prepared by carbonizing fluorine-doped porous hard carbon nanospheres adsorbed by manganese acetate, the fluorine-doped porous hard carbon nanospheres are prepared by carbonizing a precursor which is prepared from double-bond siloxane, a fluorine-containing acrylic monomer and methacryloyloxypropyl heptaisobutyl POSS (Polyhedral Oligomeric Silsesquioxane). The preparation method of the hard carbon negative electrode material comprises the following steps: S1, dissolving manganese acetate in an ethanol solvent, then adding fluorine-doped porous hard carbon nanospheres, mixing and stirring, and drying to obtain a negative electrode material precursor; and S2, in a nitrogen atmosphere, heating the negative electrode material precursor to 300-400 DEG C, keeping the temperature constant for 2-3 hours, then heating to 500-600 DEG C, keeping the temperature constant for 4-6 hours, and finally cooling to room temperature to obtain the hard carbon negative electrode material. The hard carbon negative electrode material provided by the invention has relatively high first coulombic efficiency.

This invention discloses a method for synthesizing Mn using a solvothermal method. 0.43 Cd 0.57 This invention relates to a method for producing S / Cu2MoS4 photocatalysts, belonging to the field of catalyst technology. First, copper molybdenum sulfide is prepared using cuprous oxide as a template. A solvothermal method is then used to synthesize copper molybdenum sulfide with high purity and good crystallinity. Next, manganese cadmium sulfide is prepared using manganese acetate, cadmium acetate, sodium hydroxide, and thioacetamide as raw materials. Before the hydrothermal reaction, copper molybdenum sulfide is added, and manganese cadmium sulfide is successfully modified by constructing a heterojunction, thus synthesizing Mn. 0.43 Cd 0.57 The S / Cu2MoS4 photocatalyst improved the photocatalytic hydrogen production rate of manganese cadmium sulfide. Furthermore, the Mn prepared in this invention... 0.43 Cd 0.57 The S / Cu2MoS4 photocatalyst can produce hydrogen at a rate of 8233 μmol / (g·h), which is 2.08 times that of pure manganese cadmium sulfide and 1.24 times that of manganese cadmium sulfide loaded with 1% platinum.

The invention discloses a graphene self-supporting intercalation sodium ferric manganese phosphate pyrophosphate positive electrode material and application, and a preparation method of the positive electrode material comprises the following steps: dissolving a soluble raw material in deionized water to prepare a precursor solution; the soluble raw materials comprise sodium acetate, manganese acetate and ferrous dihydrogen phosphate or disodium hydrogen phosphate, manganous dihydrogen phosphate and ferrous acetate; a carbon source and graphene are added into the precursor solution, or a dispersing agent is added, stirring and sanding are performed to obtain positive electrode slurry, the carbon source comprises one or two of starch, glucose and cane sugar, and polymeric monomers of the dispersing agent comprise ethyl 3-(trifluoromethyl) crotonate, 1, 4-dicyano-2-butene and styrene; and carrying out spray drying and briquetting on the positive electrode slurry, calcining for 10-18 hours at 500-700 DEG C under the protection of nitrogen, and crushing to obtain the positive electrode material with the particle size of 1-6 microns. The material has excellent conductivity and rate performance, is suitable for the sodium ion battery, and promotes the performance breakthrough and industrialization of the positive electrode material of the sodium ion battery.

The invention belongs to the technical field of catalysts, and particularly relates to an ozonolysis catalyst with unsaturated sites and a preparation method of the ozonolysis catalyst. The preparation method comprises the following steps: reacting 2, 5-dihydroxy-1, 4-benzoquinone with manganese acetate tetrahydrate in deionized water, separating, washing and drying to obtain coordination polymer Mn-DHBQ (H2O) 2 powder, mixing the powder with an adhesive to prepare slurry, and finally preparing the ozonolysis catalyst Mn-DHBQ with unsaturated sites through granulation and vacuum activation processes. The catalyst can be synthesized on a large scale, redundant ozone can be effectively degraded in a complex atmospheric environment, the problems that a traditional catalyst is low in catalytic activity and prone to catalytic inactivation under the conditions of high humidity and high concentration are solved, and the catalyst has wide application prospects.

The invention relates to a method for preparing an antibacterial Jianshui purple pottery product by impregnating a biscuit, which comprises the following steps of: mixing and stirring 10-30 parts of cerium nitrate or cerium acetate, 50-300 parts of manganese nitrate or manganese acetate, 10-50 parts of zinc nitrate or zinc acetate and 300-500 parts of deionized water to obtain a mixed solution; then biscuiting the prepared and formed Jianshui purple pottery clay blank; immersing the biscuit-fired green body into the mixed solution, taking out the green body after the green body adsorbs the mixed solution for 24-48 hours, naturally airing or drying at the temperature lower than 100 DEG C, and firing the green body; the oxidizing atmosphere is kept in the firing process, and after firing is finished, the temperature of the furnace is reduced to the normal temperature, and the Jianshui purple pottery product with the antibacterial effect is prepared. The method adapts to the characteristics and preparation technology of the Jianshui purple pottery pug, and the prepared Jianshui purple pottery product is good in antibacterial property.

The invention discloses a rapid preparation method of low-defect manganese-based Prussian blue under solid-liquid dynamic equilibrium, which comprises the following steps: S1, dissolving sodium citrate in deionized water, and then adding manganese acetate and ascorbic acid to form a solution A containing a manganese complex; wherein the molar ratio of the sodium citrate to the manganese acetate to the ascorbic acid is (4.5-5.5): 1: (0.3-0.4); s2, adding sodium ferrocyanide into deionized water, and stirring at a set temperature to form a supersaturated turbid liquid B containing an undissolved sodium ferrocyanide solid; wherein the addition amount of the sodium ferrocyanide far exceeds the saturation solubility of the sodium ferrocyanide at the temperature, so that the system is kept in a solid-liquid two-phase equilibrium state; benefited from the whole-process dynamic saturation environment, compared with a comparison file, the manganese-based Prussian blue prepared by the method has more obvious monoclinic phase characteristics (corresponding to obvious XRD double peaks, obvious strength and good signal-to-noise ratio), the lattice vacancy and coordinated water content are obviously lower than those of a comparison file scheme, and the electronic conductivity is increased by nearly 50%.

The invention provides a modified Mn2O3 / DPF monolithic catalyst with different potassium contents and a preparation method thereof.The preparation method comprises the steps that in an aqueous solution of manganese acetate, urea and potassium nitrate, Mn2O3 is constructed in situ on a diesel particulate filter (DPF) through a hydrothermal method, the monolithic catalyst is obtained and recorded as K / Mn / DPF, the molar ratio of potassium nitrate to manganese acetate is regulated, and the modified Mn2O3 / DPF monolithic catalyst with different potassium contents is obtained. A series of different catalysts can be obtained; according to the invention, manganese acetate, urea and potassium nitrate are used for in-situ construction of the Mn2O3 catalyst on DPF by using a hydrothermal method, and the performance of the monolithic catalyst is regulated by regulating the content of potassium nitrate; the preparation method provided by the invention has the advantages of simple process, high controllability, high practicability, no need of special equipment and harsh conditions and the like.

The application discloses a high-efficiency stable Lewis acid-containing heterogeneous catalyst and a preparation method and application thereof, and belongs to the technical field of cycloaddition reaction catalysts.The heterogeneous catalyst has strong nucleophilic groups and strong electrophilic groups.The Lewis acid-containing raw material is selected from one of zinc acetate, cobalt acetate, copper acetate, ferrous acetate, magnesium acetate, nickel acetate, calcium acetate, manganese acetate, lead acetate and tin acetate.The prepared Lewis acid-containing heterogeneous catalyst is applied to catalyzing the cycloaddition reaction of an epoxide and CO2, and the cycloaddition reaction of ethylene oxide (EO) / propylene oxide (PO) and CO2 is preferentially adopted.The problems of difficult separation of a homogeneous catalyst and insufficient activity of a heterogeneous catalyst are preferably solved.

The invention relates to the technical field of chemical synthesis, in particular to a synthesis method of matrichthrin, which comprises the following steps: S1, under an alkaline condition, carrying out aldol condensation reaction on propionaldehyde to obtain a first reaction mixture containing 2-methyl-2-pentenal; s2, in the presence of a hydrogenation catalyst, 2-methyl-2-pentenal in the first reaction mixture obtained in the step S1 is subjected to a hydrogenation reaction, and a second reaction mixture containing 2-methylvaleraldehyde is obtained; s3, in the presence of an oxidation catalyst, 2-methylvaleraldehyde in the second reaction mixture obtained in the step S2 and oxygen or oxygen-containing gas are subjected to an oxidation reaction, and a third reaction mixture containing 2-methylvaleric acid is obtained; and S4, in the presence of an esterification catalyst and a water-carrying agent, carrying out esterification reaction on the 2-methylvaleric acid in the third reaction mixture obtained in the step S3 and ethanol to obtain matrichthrin. The requirement for supplementing manganese acetate is remarkably reduced, and the production cost is reduced.

A process for the preparation of a 2,5-tetrahydrofurandimethanol difatty acid ester, comprising the following steps: providing a reaction system containing 2,5-tetrahydrofurandimethanol with a monobasic acid, wherein the structural formula of the monobasic acid is R-COOH, where R is an alkyl group from C5 to C20; esterification in the presence of a catalyst to obtain the 2,5-tetrahydrofurandimethanol difatty acid ester, wherein the catalyst is at least one of calcium acetate, tetraalkoxytitanium, manganese acetate, cobalt acetate, aluminum oxide, zinc oxide, and zinc-aluminum spinel; wherein the 2,5-tetrahydrofurandimethanol difatty acid ester has a structural formula as shown in Formula I, characterized in that the calcium acetate, tetraalkoxytitanium, manganese acetate, cobalt acetate, aluminum oxide, zinc oxide, and zinc-aluminum spinel have a particle size of have less than or equal to 80 mesh, and the reaction system includes a solvent,wherein the solvent is at least one of dimethyl sulfoxide and dimethylformamide.

The application discloses a preparation method of Mn-PBA electrode material, which comprises the following steps: (1) manganese acetate and sodium citrate are dissolved in deionized water to obtain solution A; potassium ferricyanide is dissolved in deionized water to obtain solution B; solution B is added into solution A under magnetic stirring; after stirring, aging is carried out at room temperature; (2) the product after reaction is washed with deionized water and ethanol several times in sequence; then, the product is dried overnight to obtain Mn-PBA powder; (3) an acid aqueous solution is added dropwise into Mn-PBA suspension to obtain a mixed solution, and the mixed solution is heated in an oil bath; the solution after oil bath heating is centrifuged and washed, and then is placed into an oven to be dried overnight to obtain Mn-PBA electrode material. The Mn-PBA electrode material with high electrochemical performance is prepared by adopting the co-precipitation method and acid etching method, the electrode material has a core-shell structure (cubic) with a hollow cavity, and the shell has through-hole pores; on the one hand, the electrode material exposes more reaction active sites (has rich active sites), so that the reaction activity of the electrode material is improved, and the reaction specific capacity is large; on the other hand, the volume expansion can be effectively buffered, so that the electrode material has good cycle stability.

A preparation method of an antibacterial Jianshui purple pottery product comprises the following steps: weighing 100 parts of diatomite, adding 200 parts of ethanol and 500 parts of deionized water, and uniformly stirring to obtain a primary mixture; mixing 10-30 parts of cerium nitrate or cerium acetate, 50-300 parts of manganese nitrate or manganese acetate and 10-50 parts of zinc nitrate or zinc acetate to obtain a mixed solution, adding the mixed solution into the primary mixture, and uniformly stirring to obtain a mixture; the mixture is dried and fired, and the antibacterial agent is obtained; adding the antibacterial agent into the Jianshui purple pottery pug, then adding water, and stirring to prepare slurry; carrying out filter pressing dehydration on the slurry, and carrying out vacuum pugging on the filter-pressed pug to obtain antibacterial pug; the antibacterial pug is subjected to compaction forming or throwing forming, fettling and drying are performed, then high-temperature firing is performed, and the antibacterial Jianshui purple pottery product is obtained. The method adapts to the characteristics and preparation technology of the Jianshui purple pottery pug, and the prepared Jianshui purple pottery product is good in antibacterial property.

The application discloses a graphene self-supporting intercalation sodium iron manganese phosphate pyrophosphate positive electrode material and application, and a preparation method of the positive electrode material comprises the following steps: dissolving soluble raw materials in deionized water to prepare a precursor solution, wherein the soluble raw materials comprise sodium acetate, manganese acetate, ferrous dihydrogen phosphate or disodium hydrogen phosphate, manganese dihydrogen phosphate and ferrous acetate; adding a carbon source and graphene into the precursor solution, or further adding a dispersing agent, and stirring and sand milling to obtain a positive electrode slurry, wherein the carbon source comprises one or two of starch, glucose and sucrose, and the polymeric monomer of the dispersing agent comprises ethyl 3-(trifluoromethyl)butenoate, 1,4-dicyano-2-butene and styrene; the positive electrode slurry is spray dried and briquetted, calcined at 500-700 DEG C for 10-18h under the protection of nitrogen, and crushed to obtain the positive electrode material with a particle size of 1-6um. The material is excellent in conductivity and rate performance, is suitable for sodium ion batteries, and promotes performance breakthrough and industrialization of the positive electrode material.

This invention discloses LiMn 0.6 Fe 0.4 This research relates to PO4 / C, its preparation method, and its applications, belonging to the field of electrode material preparation technology. A LiMn... 0.6 Fe 0.4 The preparation method of PO4 / C is as follows: manganese acetate, ferrous sulfate, ammonium dihydrogen phosphate, lithium acetate, and citric acid are dissolved in water to prepare a suspension; the suspension is ball-milled to form a nanoscale dispersion to obtain a ball-milled suspension; the ball-milled suspension is subjected to a hydrothermal reaction to obtain LiMn. 0.6 Fe 0.4 PO4 / C. This invention uses low-cost manganese acetate, ferrous sulfate, ammonium dihydrogen phosphate, lithium acetate, and citric acid as raw materials. When prepared via a hydrothermal method, no surfactants such as PEG are required. The resulting LiMn... 0.6 Fe 0.4 PO4 / C has small particle size, large specific surface area and high stability.