186 results about "MANGANESE ACETATE" patented technology

The invention discloses a manganese oxide monolithic metal foam catalyst and a preparation method and application thereof, and belongs to the technical field of air purification. A manganese acetate solution is used as an electrolyte, a three-electrode system is used for carrying out electro-deposition on a pretreated metal foam substrate, and a product obtained after electro-deposition is washed and dried to obtain the manganese oxide monolithic metal foam catalyst. The preparation method of the manganese oxide monolithic metal foam catalyst disclosed by the invention is simple to operate, not only is suitable for metal substrates in any shape, but also can ensure that the active components of the manganese oxide are firmly loaded and uniformly dispersed on the substrate; the catalyst has the advantages of excellent activity, good conductivity, industrial application facilitation and the like. The manganese oxide monolithic metal foam catalyst provided by the invention still has excellent long-time use stability and water resistance under a high-humidity condition.

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 invention discloses a method for synthesizing a Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst by adopting a solvothermal method, and belongs to the technical field of catalysts. The preparation method comprises the following steps: preparing copper molybdenum sulfide by using cuprous oxide as a template, synthesizing copper molybdenum sulfide with high purity and good crystallinity by combining a solvothermal method, preparing manganese cadmium sulfide by using manganese acetate, cadmium acetate, sodium hydroxide and thioacetamide as raw materials, adding copper molybdenum sulfide before a hydrothermal reaction, successfully modifying the manganese cadmium sulfide by constructing a heterojunction, and preparing the copper molybdenum sulfide modified manganese cadmium sulfide. The Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst is synthesized, and the photocatalytic hydrogen production rate of the cadmium manganese sulfide is improved. Moreover, the hydrogen production rate of the Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst prepared by the invention can reach 8233 mu mol / (g.h), which is 2.08 times of the hydrogen production rate of pure cadmium manganese sulfide, and 1.24 times of the hydrogen production rate of cadmium manganese sulfide loaded with 1% platinum.

The present invention relates to the technical field of plastic recycling, and disclosed are a method for preparing a regenerated resin from PET recyclate and a use thereof. The method comprises the following steps: mixing PET recyclate, a polyol, and a catalyst; carrying out elevated temperature reaction; after cooling, adding a polybasic acid or a polybasic acid anhydride for reaction; and after the reaction is finished, cooling to obtain a regenerated resin. The polyol is selected from at least one of diethylene glycol, tripropylene glycol, and polyethylene glycol; the average functionality of the polybasic acid is greater than 2; and the catalyst is selected from at least two of zinc acetate, manganese acetate, and tetrabutyl titanate. According to the present invention, the regenerated resin is applied to the preparation of water-based ink, so that the water-based ink achieves the same printing performance as acrylic resin ink. In the method of the present invention, no waste is generated during polymerization, achieving a 100% recycling rate for waste plastic. Fossil raw materials are saved, and PET recyclate is also fully utilized, achieving the objective of turning waste into wealth.

The invention provides nanocrystalline barium titanate dielectric ceramic, a preparation method thereof and a ceramic capacitor, and belongs to the technical field of ceramic materials. The preparation method of the nanocrystalline barium titanate dielectric ceramic comprises the following steps: adding barium titanate into a first solvent, and carrying out ultrasonic atomization to obtain barium titanate slurry; adding holmium nitrate, yttrium nitrate, dysprosium nitrate, calcium nitrate, magnesium nitrate, manganese acetate and zinc acetate into an inorganic solvent to obtain an inorganic doped solution, and adding tetraethoxysilane into a second solvent to obtain an organic doped solution; uniformly mixing the barium titanate slurry, the inorganic doping solution and the organic doping solution to obtain mixed slurry; adjusting the pH value of the mixed slurry to be alkaline, standing and precipitating, drying, sieving for the first time, and pre-sintering to obtain powder; sieving the powder for the second time, uniformly mixing the powder with a binder, sieving for the third time, granulating, and carrying out compression molding to obtain a green body; and degumming and sintering the green body to obtain the nanocrystalline barium titanate dielectric ceramic.

The invention discloses a potassium-doped chain-shaped manganous-manganic oxide positive electrode material and a preparation method and application thereof, and belongs to the field of aqueous zinc ion batteries, and the preparation method comprises the following steps: preparing a mixed solution of isopropanol and deionized water; the preparation method comprises the following steps: under magnetic stirring, dissolving manganese acetate, potassium chloride and nitrilotriacetic acid into a mixed solution, and preparing K-Mn-NTA, namely a K-Mn-NCs precursor, through a hydrothermal method; then, K-Mn3O4-NCs is prepared through an annealing method; and finally, carrying out in-situ polymerization on polyaniline on the K-Mn3O4-NCs to obtain the K-Mn3O4-NCs coated PANI. When the positive electrode material is applied to the zinc ion battery, the cycle performance and the rate capability of the zinc ion battery can be improved, the conductivity of the positive electrode material is improved, the dissolution of Mn is inhibited, and the electrochemical performance of the zinc ion battery is improved.

The invention relates to a spinel / layered composite phase modified lithium-rich manganese-based positive electrode material and a preparation method thereof. The preparation method comprises the following steps: adding lithium acetate, manganese acetate, cobalt acetate and nickel acetate into deionized water, and proportioning according to a general formula LiNixCoyMnzO2 * Li2MnO3 (x + y + z = 1, 0.5 < = xlt, 0.75, 0.2 < = ylt, 0.25, 0 < = z < = 0.3) to obtain a salt solution; precursor powder is prepared through a spray pyrolysis method; carrying out high-temperature calcination treatment on the precursor powder to obtain powder; adding conductive active carbon into the powder, and carrying out ball milling in absolute ethyl alcohol; and drying the ball-milled material in a blast drying oven, and standing to obtain spinel / layered composite phase modified lithium-rich manganese-based positive electrode material powder. The charge transport characteristic and the dynamic performance of the lithium-rich manganese-based positive electrode material are improved, so that the median voltage of the positive electrode material is greatly improved to 3.78 V, and meanwhile, the overall stability of the positive electrode material is greatly improved. The finally prepared button cell shows excellent cycling stability, and within the voltage of 2-4.8 V, the average median voltage decline of each cycle is 1.15 mV after 400 cycles of 1C current; and meanwhile, the synthesis steps are simple and convenient, and the lithium-rich manganese-based positive electrode material can be prepared by adopting conventional equipment.

The invention discloses a preparation method of a composite denitration catalyst based on a Cu-BTC metal organic framework, the composite denitration catalyst and a denitration catalytic filter material, and relates to the technical field of denitration catalysis. The preparation method comprises the following steps: taking Cu-BTC as a sacrificial template, dipping the sacrificial template in a manganese acetate mixed solution with a certain concentration, carrying out rotary evaporation at a certain temperature to dryness, then putting into a drying oven to dry a sample, and finally preparing the CuO / Cu2O / Mn3O4 composite denitration catalytic material by adopting a high-temperature carbonization and high-temperature oxidation sectional calcination method. The composite denitration catalytic material prepared in the invention presents a spherical morphology with certain pores and uniform distribution, metal oxides with different valence states have excellent oxidation-reduction performance, electron transfer between NH3 and NOx is promoted, and the process of a reduction reaction is accelerated; the metal with different valence states can promote the reaction between NH3 and NOx, and the prepared composite denitration catalyst is stable in structure, low in temperature, efficient, green, environmentally friendly, non-toxic and harmless.

The invention discloses a preparation method of meta-phosphorylated polysubstituted pyridine compounds, and belongs to the technical field of organic synthesis. The synthesis process is simple, highly toxic reagents, various catalysts and expensive noble metal catalysts do not need to be used, tert-olefin amide and an organophosphorus reagent are used as basic raw materials, manganese acetate is used as an accelerant (conventional reaction reagents, solvents and accelerants are utilized), and the tert-olefin amide is synthesized through an intramolecular free radical cascade reaction. The meta-phosphorylated polysubstituted pyridine compound can be efficiently obtained in one step, and the yield is as high as 95%; in addition, the reaction raw materials are cheap and easy to obtain, the atom economy is high, the substrate universality is wide, and the operability is high. The meta-phosphorylated polysubstituted pyridine compound disclosed by the invention has relatively good insecticidal activity on beet armyworm larvae, and can be applied to agricultural pest control as an insecticide.

The invention relates to a composite honeycomb activated carbon adsorption material and a preparation method thereof, and belongs to the technical field of activated carbon, and the composite honeycomb activated carbon adsorption material comprises the following raw materials: composite modified activated carbon, a binder, a polytetrafluoroethylene emulsion and deionized water. Manganese acetate, zirconium tetrachloride and copper acetate are added in the process of preparing the composite modified activated carbon, three elements of manganese, zirconium and copper are introduced to achieve a synergistic effect, meanwhile, a 2-imidazolone aqueous solution is added to introduce a nitrogen-containing functional group with high electronegativity, a sodium para aminobenzoate aqueous solution is added to introduce an amino functional group, and the composite modified activated carbon is prepared. And formaldehyde can be effectively adsorbed and removed, so that the prepared composite honeycomb activated carbon adsorption material finished product has excellent formaldehyde adsorption and purification performance.

The invention provides a method for preparing a lithium iron manganese phosphate composite positive electrode material by utilizing multi-stage negative pressure evaporation, and belongs to the technical field of lithium ion battery positive electrode materials. The method comprises the following steps: placing manganese acetate, ferrous sulfate and an antioxidant in the same reaction kettle, and adding deionized water to form a ferromanganese salt mixed solution; the ferromanganese salt mixed solution is controlled to be kept at the constant temperature of 5-40 DEG C; performing multi-stage negative pressure evaporation to obtain mixed crystals of manganese acetate and ferrous sulfate; mixing the mixed crystal with a lithium salt, a phosphorus-containing compound and a carbon source, and carrying out ball milling to obtain precursor powder of lithium iron manganese phosphate; putting the precursor powder into a sintering furnace, carrying out two-stage sintering in a flowing inert atmosphere, and cooling along with the furnace to obtain the lithium iron manganese phosphate composite positive electrode material; according to the method, crystals which are uniformly mixed and small in particle size are separated out through negative-pressure evaporation and concentration, meanwhile, the whole production process is fast in reaction and free of waste materials and waste residues, and the prepared lithium manganese iron phosphate material is good in stability and high in electron and ion conductivity.

The anionic manganese oxide nanoparticle nucleic acid scavengers are biodegradable anionic scavengers with low cytotoxicity, which are able to scavenge (bind) cell-free nucleic acids (e.g., extracellular ssRNA, dsRNA, and unmethylated DNA), providing treatment for various medical conditions. The main component of the scavenger is manganese oxide, which may be synthesized by using a manganese compound (e.g., manganese acetate) and an acid (e.g., tannic acid) at high temperature (e.g., 100-150° C.). Synthesis may be performed by mixing a manganese compound and an acid in water forming a mixture, which is stirred, heated, and allowed to cool. The anionic manganese oxide nanoparticles are extracted from the cooled mixture. The typical size of the resultant nanomaterials ranges from 30 to 100 nm; the zeta potential of the as-prepared nanomaterials is about −20 mV. The nanoparticles have various uses, including administration to a subject to treat inflammation or to treat cancer.

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.

The invention relates to a preparation method of a low-cost high-performance sodium-ion battery cell. The low-cost high-performance sodium-ion battery cell comprises a positive electrode, a negative electrode, a diaphragm and an electrolyte, the preparation method comprises the following steps: adding sodium carbonate, ferrous oxalate, manganese acetate, ammonium dihydrogen phosphate, a mercaptoethyl guanidine dihydrobromide complexing agent, glucose and ethanol into a ball milling tank for ball milling, and performing vacuum drying to obtain a precursor; placing the precursor in a tubular furnace, and performing high-temperature calcination in an argon atmosphere to obtain an active material; uniformly stirring and mixing an active material, a carbon nanotube, a binder and dimethyl sulfoxide, coating a titanium sheet with the mixture, and drying to obtain a positive electrode; the mercaptoethyl guanidine dihydrobromide complexing agent is prepared from mercaptoethyl guanidine (MEG) dihydrobromide, ethylene oxide and allyl trimethyl ammonium bromide; the prepared battery cell of the ion battery has excellent rate capability and capacity retention ratio, shows excellent structural stability and electrochemical performance, and has a relatively good application prospect.

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.

The invention discloses a supported catalyst and a method for preparing the catalyst based on laser etching, and the method comprises the following steps: 1, adding manganese acetate and one or more transition metal salts into water, and fully stirring and mixing to obtain a transition metal mixed solution A; 2, a chelating agent is added into the transition metal mixed solution A, the pH value of the mixed solution is adjusted, and a mixed solution B with the pH being 7-8 is obtained; 3, foamed nickel is placed in a reactor, the mixed solution B is added to immerse the foamed nickel, a water bath reaction is conducted till jelly is formed on the surface of the foamed nickel, then the foamed nickel and the jelly are dried together, and a precursor C is obtained; and 4, performing laser etching on the precursor C by using CO2 to obtain the catalyst MnO2 / MxOy (at) NF. The catalyst is simple in preparation process and low in price, and the prepared catalyst has high catalytic activity for oxidizing NO and has excellent thermal stability and long service life.

The application discloses a kind of step-by-step doping preparation ultra-thin BME ceramic dielectric capacitor and preparation method, and the ultra-thin BME ceramic dielectric capacitor is by dielectric layer and dielectric layer mutual superposition and is fired, the dielectric layer includes dielectric layer and electrode printed on dielectric layer, the dielectric layer includes the following raw materials: coated BSCT main matrix, liquid flux agent;Coated BSCT main matrix includes the following raw materials: BSCT material, magnesium nitrate, manganese acetate, oxovanadium oxalate, rare earth nitrate;Liquid flux agent is by nano copper oxide, tetraethyl orthosilicate, tributyl borate in proportion, targeted doping is carried out by step-by-step doping, and new three-layer structure is formed to obtain good comprehensive performance.

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 manganese-cerium aerogel multifunctional catalytic material as well as a preparation method and application thereof. Tetraethoxysilane, ethanol and water are uniformly stirred to obtain silica sol; the preparation method comprises the following steps: dissolving two metal salts of manganese acetate and cerous nitrate in water together, adding into silica sol, and stirring to obtain gel; pouring the aging solution into the gel for aging, then replacing with n-hexane, then carrying out gradient drying, calcining and carrying out heat preservation after the gradient drying is ended, so as to obtain metal-loaded silica aerogel; the gel is immersed in an acetic acid solution, metal oxide on the surface of the aerogel is etched, and an obtained sample is washed with deionized water and then dried; the preparation method comprises the following steps: dissolving tetrapropylammonium hydroxide and urea in water, adding aluminum isopropoxide, stirring at room temperature, spraying aerogel powder on the obtained solution, standing at room temperature, transferring the mixed material into a polytetrafluoroethylene reaction kettle lining, putting into a reaction kettle, putting into a drying oven, carrying out hydrothermal crystallization, and carrying out subsequent washing, suction filtration and drying, thereby obtaining the aerogel. And calcining to obtain the manganese-cerium-loaded aerogel molecular sieve composite multifunctional catalytic material.

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 a lithium manganese iron phosphate positive electrode material prepared by using a mixed manganese source and a preparation method and application thereof. The preparation method comprises the following steps: mixing manganese dioxide and manganese acetate to obtain the mixed manganese source; the method comprises the following steps: dispersing a lithium source, a mixed manganese source, an iron source, a phosphorus source and a carbon source in pure water; carrying out sanding treatment; and then carrying out spray drying and calcining to obtain the catalyst. By using the mixed manganese source, on one hand, the specific surface area of the material can be obviously reduced, the processing performance requirement on a battery cell is reduced, and on the other hand, the discharge specific capacity of the material can be obviously increased by mixing the manganese source. The specific surface area of a battery assembled by the obtained lithium manganese iron phosphate positive electrode material is 21.70 m < 2 > / g, the specific discharge capacity is 154.6 mAh / g (0.1 C), 153.7 mAh / g (0.2 C), 150.8 mAh / g (0.5 C) and 148.3 mAh / g (1C), the capacity retention rate of 1C / 20 weeks is 99.41%, and the cycle performance is good.

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.

The invention discloses a method for preparing manganese sulfate from sulfur-free low-grade rhodochrosite. The method comprises the following steps: by taking low-grade rhodochrosite as a raw material, grinding and pretreating the low-grade rhodochrosite, mixing the low-grade rhodochrosite with water, adding acetic acid, fully stirring, heating and leaching, and carrying out solid-liquid separation after the reaction is finished, so as to obtain a liquid-phase manganese acetate mother solution and solid-phase sulfur-free manganese slag; sulfuric acid is added into the manganese acetate mother liquor, heating and reduced pressure distillation are conducted, acetic acid is vaporized and then condensed and recycled for ore leaching, and manganese sulfate is crystallized and separated out in the heating process to serve as a product. Sulfuric acid is not in direct contact with manganese ore, the manganese slag does not contain sulfur, resource utilization is facilitated, and the treatment cost of the manganese slag can be remarkably reduced; and residual acid in the slag can be neutralized by lime water to stably exist, so that the risk of secondary pollution is avoided. The concentration of the acetic acid is not high, cyclic utilization is achieved in the method, the production cost is reduced through recycling of the acetic acid, the resource utilization rate is further increased, and the method is particularly suitable for the manganese extraction process of low-grade rhodochrosite.

The present invention discloses the preparation method of β-phosphonyl-enamine derivative. The preparation method comprising the following steps: dissolving the enamine derivative, organic phosphine compound, manganese acetate and potassium carbonate in the solvent, reacting at room temperature to obtain the β-phosphonyl-enamine derivative. The enamine derivative was as the starting material, and the raw materials are easy to obtain and a great many varieties. The various forms of the products obtained therein can be directly applied and can be used in further reactions. The reaction conditions are mild, the reaction speed is high, the reaction operation and the post-treatment process are simple, the production is convenient, and the method is suitable for large-scale production.

The invention relates to the technical field of manganese acetate synthesis, in particular to a method for synthesizing high-purity battery-grade manganese acetate by using a manganese sheet and acetic acid, which comprises the following steps: step 1, adding an acetic acid aqueous solution and the manganese sheet into a reactor for reaction; 2, separating the reaction liquid through a separation tower, and collecting an acetic acid-containing mixture extracted from the tower bottom; step 3, evaporating, cooling and crystallizing the acetic acid-containing mixture separated in the step 2 to obtain a manganese acetate crude product; step 4, adding the manganese acetate crude product obtained in the step 3 into a first purification tank; 5, after the reaction in the step 4 is finished, filtering the reaction liquid in the first purification tank, and conveying the filtered reaction liquid to a second purification tank; according to the method for synthesizing the high-purity battery-grade manganese acetate, the manganese sheets and the acetic acid are adopted as main raw materials, the main raw materials are low in price and easy to obtain, the preparation process is simple, few wastes are generated, and the obtained manganese acetate is high in purity.

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.