84 results about "Manganese chloride tetrahydrate" patented technology

The invention relates to a preparation method and application of a Mn-doped ZnS quantum dot imprinted sensor and belongs to the technical field of environmental functional material preparation. The method comprises the steps of firstly stirring an aqueous solution of zinc sulfate heptahydrate and an aqueous solution of manganese chloride tetrahydrate at room temperature under the condition that nitrogen gas is introduced, and adding an aqueous solution of sodium sulfide nonahydrate, so as to obtain Mn-ZnS quantum dots; carrying out vinyl modification on the obtained Mn-ZnS quantum dots by using 3-(methacryloyloxy) propyl trimethoxysilane, then, synthesizing a Mn-doped ZnS quantum dot imprinted sensor, which takes 2,6-dichlorophenol as template molecules, methacrylic acid as functional monomers, Mn-ZnS-KH570 as auxiliary monomers, ethylene glycol di(methacrylate) as a cross-linking agent, 2,2-azodiisobutyronitrile as an initiator and acetonitrile as a solvent, by using a precipitation polymerization method through two-stage polymerization, and applying the Mn-doped ZnS quantum dot imprinted sensor to the optical detection on 2,6-dichlorophenol. The prepared phosphorescent molecular-imprinted polymer has very good optical and pH stability and has the capability of selectively identifying 2,6-dichlorophenol.

The invention relates to a method for preparing an inorganic material, in particular to a method for preparing a manganese dioxide (MnO2) nano rod. The method comprises the following steps of: mixing manganese chloride tetrahydrate and potassium permanganate uniformly, and dissolving the mixture into distilled water till full dissolution; adding HCl solution to react, putting the mixed reaction solution into a thermostatic water bath, preserving the heat for over 24 hours, and cooling to room temperature to obtain sediment; and finally, centrifugally cleaning the sediment for multiple times by using deionized water till the pH value is neutral, and drying the sediment at room temperature to obtain the high-purity manganese dioxide nano rod. The method has the advantages that: the reagents are commercial products, fussy preparation is not needed, the process is simple and easy to operate, the cost is low, and the prepared product has high purity and can be produced in large batch.

The invention provides a preparation method and application of phase controllable manganese oxide. The preparation method comprises the following steps: under the condition that water is used as a solvent, providing a manganese source through manganese chloride tetrahydrate and providing a carbon source through glucose; under the condition that urea exists, putting into a high-pressure reaction kettle taking polytetrafluoroethylene as a lining and carrying out hydrothermal reaction; centrifuging, washing and drying to obtain a manganese carbonate@carbon composite material; carrying out pyrolysis on a precursor material under the same condition, so as to obtain different manganese oxide. The method for synthesizing a precursor is simple, sources are abundant and the price is low; manganeseoxide obtained under different conditions has excellent specific capacitance and good circulating stability.

The invention discloses a manganese ion-doped metal organic framework material and a preparation method and application thereof. The material comprises UiO-66 (Zr) and is doped with manganese ions. The preparation method of the material comprises the following steps: mixing zirconium chloride, terephthalic acid, manganese chloride tetrahydrate and N,N-dimethylformamide, and performing a solvothermal reaction so as to obtain the manganese ion-doped metal organic framework material. The manganese ion-doped metal organic framework material has the advantages of large adsorption capacity, good adsorption performance, good stability and the like, has simple synthesis, can be widely used, can efficiently adsorb and remove pollutants in water bodies, and is a new adsorbent; the preparation methodof the material has the advantages of simple operation, convenient preparation, few kinds of raw materials, high output, low cost and the like, and the material can be widely used for treating antibiotic wastewater and / or heavy metal wastewater, and has the advantages of convenient operation, simple equipment, low processing cost, high treatment efficiency and a good removal effect, and has a good application value and application prospect.

The invention discloses a manganese-based luminous metal organic framework material and a preparation method thereof and application thereof. The chemical formula of the manganese-based luminous metalorganic framework material is {[Mn(tipe)(1, 4-ndc)(H2O)].(DMF)2.(H2O)3}n. The preparation method comprises the steps of mixing manganese chloride tetrahydrate, tipe and 1, 4-naphthalic acid accordingto a ratio; adding N, N-dimethyl formamide and water to an obtained mixture; and stirring the mixture; putting the mixture into a high temperature resistant glass bottle; and after enabling the mixture to react for 2-3 days at 85-95 degrees centigrade and slowly cooling a reaction product to room temperature, filtering the cooled reaction product to obtain a yellow rod-like crystal, wherein the yellow rod-like crystal is the manganese-based luminous metal organic framework material. The manganese-based luminous metal organic framework material, disclosed by the invention, has the advantages that the fluorescence quantum yield is very high, and potential application values in the fields such as light emitting diodes, biological imaging and fluorescence detecting are realized. The manganese-based luminous metal organic framework material with an excellent fluorescence characteristic shows rapid and efficient fluorescence detecting performance to Fe<3+>.

The invention discloses a manganese-based luminescent metal organic framework material as well as a preparation method and application thereof. The manganese-based luminescent metal organic frameworkmaterial has a chemical formula of {[Mn(Tipe)4(bcpf)2](DMF)}n. The preparation method comprises the following steps: mixing manganese chloride tetrahydrate, 1,1,2,2-tetra[4-(imidazole-1-yl)phenyl]ethylene and 4,4'-sulfonyl dibenzoic acid according to a ratio, adding N,N-dimethyl formamide and water of a certain volume ratio, mixing and stirring to be filled in a glass bottle, reacting in a constant temperature drying oven at the temperature of 80-100 DEG C for 2-3 days, so as to obtain the colorless product, namely the luminescent metal organic framework material. The luminescent metal organicframework material {[Mn(Tipe)4(bcpf)2](DMF)}n disclosed by the invention can achieve potential application in the detection of a sensor material containing micro water content in the methanol solvent, and has excellent selectivity and high sensitivity.

The invention relates to a renewable high-efficiency formaldehyde removal material and a preparation method thereof. The preparation method comprises the following steps of mixing tetramethylammonium hydroxide with a H2O2 solution to make a solution A; dissolving manganese chloride tetrahydrate in ultrapure water to make a solution B; dropwise adding the solution A into the solution B, then ultrasonically dispersing, and agitating to obtain nigger-brown ultrathin MnO2 nanosheet colloidal turbid liquid; dissolving alkaline sepiolite and nano molybdenum carbide in a solution of ethanol and water, dropwise adding the ultrathin MnO2 nanosheet colloidal turbid liquid, centrifugally separating reaction liquid, and drying, so that the high-efficiency formaldehyde removal material loaded with an ultrathin MnO2 nanosheet is obtained. The reaction, of the renewable high-efficiency formaldehyde removal material, of catalytically oxidizing formaldehyde can be carried out at room temperature, is excellent in recycling performance, is an environment-friendly and nontoxic powdery catalyst, can be used for effectively removing the formaldehyde released from various house furnishing materials and free formaldehyde in air, and is thoroughly free from secondary pollution; thus, obsession and threat which are brought by the formaldehyde in a living environment to the normal life of people are guaranteed to remove.

The invention discloses a preparation method of graphene and manganous manganic oxide composite electrode material. The preparation method of the graphene and manganous manganic oxide composite electrode material includes: firstly, dispersing a mixture of oxidized graphene and manganese chloride tetrahydrate into isopropyl alcohol in ultrasonic mode, adding a potassium permanganate water solution into a water bath under control temperature of 83 degree centigrade for reacting for 30min so as to obtain reaction liquid, and performing suction filtration, washing and drying on the reaction liquid so as to obtain an oxidized graphene and acicular manganese dioxide precursor; then, dispersing the obtained oxidized graphene and acicular manganese dioxide precursor in distilled water in ultrasonic mode, adding a reductive agent, performing reduction reaction for 2h under control temperature of 60-90 degree centigrade after 8-24h of standing so as to obtain reaction fluid, performing the suction filtration on the reaction fluid so as to obtain a filter cake, repetitively washing the obtained filter cake through the distilled water until effluent liquid is neutral, and finally drying the filter cake under control temperature of 50-65 degree centigrade so as to obtain the graphene and manganous manganic oxide composite electrode material good in super capacitive performance. The preparation method of the graphene and manganous manganic oxide composite electrode material is simple in reaction step, does not involve severe conditions or expensive reaction devices, and is suitable for industrial production.

The invention discloses a method for synthesizing MnS micrometer powder with a controllable morphology and relates to the technical field of function energy materials. The method comprises the following steps of: dissolving manganese chloride tetrahydrate and a sulfur source in water, uniformly stirring, transferring the well-dissolved solution into a high-temperature and high-pressure reaction kettle lined with polytetrafluoroethylene, then placing in a constant-temperature blowing oven to carry out reaction, and after the reaction is complete, carrying out aftertreatment to obtain the MnS micrometer powder; the sulfur source is sodium sulfate, L-cysteine or sodium thiosulfate. The MnS micrometer powder with the controllable morphology is successively obtained by a solvent method. Shown by a series of experimental results, when Na2S.9H2O is used as the sulfur source, the product is a sheet-shaped octahedron; when Na2S2O3.5H2O is used as the sulfur source, the product is a bipyramid octahedron; when LC3H7NO2S is used as the sulfur source, the product is small-rod-shaped; the obtained product is uniform in grain size and good in dispersity and has no agglomeration.

The invention discloses a preparation method for a magnetic supported manganese dioxide catalyst. The preparation method comprises the following successive steps: adding hydrogen peroxide and a dilute solution of NaOH into a FeCl2 solution drop by drop, carrying out stirring, then transferring the obtained mixture into an autoclave, continuing a reaction, then carrying out natural cooling to room temperature so as to obtain a solid precipitate and adding the solid precipitate into a sodium dodecyl benzene sulfonate solution so as to obtain magnetic organic hydrotalcite; preparing a solution from (3-aminopropyl)triethoxysilane, salicylaldehyde and manganese chloride tetrahydrate according to a mol ratio of 1: 1: 1, and adding the magnetic organic hydrotalcite so as to form manganese-containing organic complex pillared hydrotalcite; and roasting the manganese-containing organic complex pillared hydrotalcite in a muffle furnace at 400 to 550 DEG C for 6 to 8 h, wherein elements like carbon and nitrogen in the manganese-containing organic complex pillared hydrotalcite are converted into gas and escape to form channels, so the magnetic supported manganese dioxide catalyst is obtained. The magnetic supported manganese dioxide catalyst with such a structure is beneficial for adsorption and catalysis of pollutants and facilitates separation.

The invention provides a metal organic framework MnMOF single crystal material, a nanosheet, preparation and application. The preparation method comprises the following steps of: dissolving manganesechloride and / or manganese chloride tetrahydrate and a ligand 1, 3, 6, 8-4-(4-carboxyl benzene) pyrene (H4tbapy) in a mixed solvent of N, N-dimethylformamide, 1, 4-dioxane and water; carrying out solvothermal reaction under program temperature control; slowly cooling to room temperature after the reaction is stopped; carrying out washing, suction filtration and drying on separated crystals to obtain a Mn-MOF single-crystal material; and then adding the obtained Mn-MOF crystal into a mixed solvent of acetonitrile and water or an acetonitrile solvent for ultrasonic treatment to obtain a Mn-MOF nanosheet. The Mn-MOF nanosheet prepared by the method is regular in morphology and adjustable in thickness range, and has higher photocatalytic water splitting hydrogen production performance comparedwith a Mn-MOF single-crystal material of a body. The synthesis method provided by the invention has the advantages of mild conditions, simple operation, high catalytic activity and the like.

The invention relates to a method for producing ethanol by fermenting straw hydrolysate, in particular to a method for improving the fermentation efficiency of ethanol, aiming at solving the technical problem that the fermentation efficiency of fermentation organisms is influenced by a straw diastatic fermentation technology. The method comprises the steps of: adding manganese chloride tetrahydrate, zinc sulfate heptahydrate, nickel chloride hexahydrate, cobalt chloride octahydrate, pantothenic acid, inositol and vitamin B1 into the straw hydrolysate, and adjusting the pH value to be 5.0-5.5 to obtain mixed solution; adding yeast into the mixed solution until the concentration of the yeast is 1.5g / L; and then, carrying out fermentation for 48-72h under the condition that the temperature is 32-40 DEG C, and the stirring speed is 150rpm to finally obtain ethanol. The yield of ethanol fermented at the temperature of 40 DEG C and the pH value of 5.0-5.5 is 2-3 times of that of ethanol which is directly fermented without being added with the trace elements (including manganese chloride tetrahydrate, zinc sulfate heptahydrate, nickel chloride hexahydrate, cobalt chloride octahydrate, pantothenic acid, inositol and vitamin B1).

The invention relates to a method for preparing manganese sulfide nanosheets employing a quantum dot seed process. The method comprises the following steps: (1) adding manganese chloride tetrahydrate to oleylamine to obtain a solution containing quantum dots; (2) dissolving sublimed sulfur into the oleylamine, so as to obtain a sulfur source solution; (3) heating the solution containing quantum dots to 170-240 DEG C, and then adding the sulfur source solution, adding ethanol as a precipitator after reaction is ended, centrifugally washing to obtain MnS nanosheets. The method disclosed by the invention is simple and convenient in operation process, available in required raw material for preparation, low in price, mild in reaction condition, and free of special demands on equipment. By adopting the method, common precursors can be taken as the raw materials; the MnS nanosheets with regular shapes can be prepared by a simple experimental device.

The invention belongs to the technical field of soilless culture, and particularly relates to a soilless culture solution and a preparation method thereof. The soilless culture solution is prepared from, by weight, 20,000-60,000 parts of straw organic liquid, 0.1-0.5 part of a plant growth regulator, 2-5 parts of EM probiotic liquid, 5-10 parts of antiseptic bactericidal substances, 20-50 parts of urea, 10-40 parts of potassium nitrate, 10-40 parts of monopotassium phosphate, 1-5 parts of magnesium sulfate heptahydrate, 0.1-0.5 part of chalcanthite, 0.1-0.5 part of manganese chloride tetrahydrate, 1-3 parts of ethlene diamine tetraacetic acid ferric sodium salt, 0.5-1.5 parts of boric acid, 0.5-1 part of ammonium molybdate tetrahydrate and 0-10 parts of a pH regulator. According to the soilless culture solution, the straw organic liquid is adopted as a liquid phase carrier, and the soilless culture solution is low in production cost, high in nutrient element content and wide in application range; the preparation method is simple and reasonable and promotes industrial production.

The invention discloses a hydroponic nutrient solution for Radix Codonopsis, and belongs to the technical field of soilless culture for medicinal plants. The hydroponic nutrient solution comprises, byweight, 40-60 parts of ammonium chloride, 600-900 parts of potassium nitrate, 700-1100 parts of calcium nitrate tetrahydrate, 150-350 parts of magnesium sulfate, 100-200 parts of potassium dihydrogenphosphate, 1-3 parts of manganese chloride tetrahydrate, 0.5-1.5 parts of copper chloride dihydrate, 1-2 parts of boric acid, 0.3-0.9 part of zinc nitrate hexahydrate, 0.07-0.18 part of sodium molybdate dihydrate and 5-15 parts of iron sulfate heptahydrate. The hydroponic nutrient solution can improve the reproductive capacity, the cost and the efficiency of the Radix Codonopsis.

The invention discloses a preparation method and application of a MnxOy material and belongs to the technical field of environmental chemical water treatment. The invention aims to provide a simple and feasible method for activating PMS by inducing a MnxOy material with visible light. The preparation method comprises the following steps of: dissolving manganese chloride tetrahydrate into a mixed solution of distilled water and glycerol, adding a NaOH solution, stirring, reacting in the oven, and centrifuging the precipitate to obtain the MnxOy material. The MnxOy material prepared by the preparation method activates PMS under the irradiation of visible light to generate sulfate free radicals and hydroxyl free radicals which have long service life and strong oxidability and are used for synergistically degrading organic pollutants in water.

The invention provides improvement of a technology for industrialized production of manganese chloride tetrahydrate and anhydrous manganese chloride, aiming at the problems of a production technologyof manganese chloride in the prior art that a product has more impurities and the form of the obtained product is single, and the production technology is not suitable for the industrialized production.

The invention discloses a hydroponic nutrient solution for wheat seedlings and a preparation method thereof, and relates to the technical field of soilless culture. The hydroponic nutrient solution for the wheat seedlings per ton is prepared from 470-480 g of calcium nitrate terahydrate, 30-40 g of mono-potassium phosphate, 130-140 g of potassium sulfate, 160-170 g of magnesium sulfate heptahydrate, 5-10 g of ferric chloride hexahydrate, 0.1-0.5 g of manganese chloride tetrahydrate, 1-2 g of boric acid, 0.1-0.5 g of copper sulfate pentahydrate, 0.5-1.0 g of zinc sulfate heptahydrate, 0.1-0.5 g of ammonium molybdate and water as a solvent. The hydroponic nutrient solution for the wheat seedlings is balanced in nutrition, the proportion of each element of the nutrient solution is kept balanced within a certain range during a relatively long time, macro-elements and micro-elements are adopted in a balanced mode, at the same time, the application amount of the nutrients is reduced, and the problems are solved that for a long time, nutrient solutions for the wheat seedlings for experimental use are not targeted, and over-nutrition occurs frequently.

The invention relates to the technical field of solar energy photo-thermal utilization, in particular to a preparation method for functional power of a solar energy absorbed composite coating layer based on chromium-aluminum-manganese oxide. The composite coating layer comprises the following raw materials of a mixed raw material, a bonder and a dispersing agent, which are mixed at the ratio of 500:10:2, wherein the mixed raw material comprises the following components in percentage by mass: 55 percent of chromium oxide, 35 percent of aluminum oxide and 10 percent of manganese chloride tetrahydrate; and the bonder is 1053 silicone resin; and the dispersing agent is glycerine. According to the invention, the functional power prepared by using a spray drying method has excellent flowability and can meet the requirements of plasma spraying on material delivery. A phase structure of the coating layer is stable in selective absorption, can be fixedly combined with a matrix, and has excellent thermal shock resistance both in property and structure.

The invention discloses a method for fertilizer conservation, yield increase and nitrogen and phosphorus loss interception of the rice field, and a biofilm culture medium composition. The method comprises the following steps: (1) preparing a natural biofilm culture medium: dissolving sodium nitrate, dipotassium phosphate, magnesium sulfate heptahydrate, calcium chloride heptahydrate, citric acid,ferric ammonium citrate, boric acid, manganese chloride tetrahydrate, zinc sulfate, sodium molybdate, copper sulfate pentahydrate and cobalt nitrate hexahydrate in 1 L of distilled water in proportionto prepare the natural biofilm culture medium; (2) preparing a sodium alginate solution; (3) preparing a spherical carrier of the natural biofilm; and (4) applying the spherical carrier of the natural biofilm in the rice field: respectively broadcasting the artificial carrier in the rice field one day after rice transplanting and one day after spike fertilizer application in order to induce the growth of the natural biofilm in the rice field. The method remarkably increases the content of total nitrogen and total phosphorus in soil, remarkably increases the rice yield, obviously reduces the content of total nitrogen and total phosphorus in field surface water, and reduces the runoff loss risk of nitrogen and phosphorus.

The invention discloses a Manganese dioxide loaded nitrogen-sulfur double-doped graphene catalyst for an oxygen reduction reaction, a preparation method of the manganese dioxide loaded nitrogen-sulfurdouble-doped graphene catalyst and the application of the manganese dioxide loaded nitrogen-sulfur double-doped graphene catalyst. The general formula of the catalyst is Mn-C-N / S, wherein heteroatomsN and S are doped to increase the graphene defects and disorder degree, and various valence manganese compounds are loaded to increase the electrocatalytic activity of the catalyst. When the mass ratio of N / S co-doped reduced graphene oxide to manganese chloride tetrahydrate to potassium permanganate is 1: 7.5: 5, a clear oxygen reduction reaction peak of the catalyst is observed in -0.52 V, at the moment, the peak current density of the catalyst is 5.72 mA cm <-2>, and the catalyst has the best oxygen reduction activity. The graphene oxide is prepared by adopting a Hummers modification method, and the manganese dioxide loaded nitrogen-sulfur double-doped graphene catalyst is prepared by adopting a two-step hydrothermal method. According to the present invention, the reaction conditions are mild, the process flow is simple and convenient, the reaction process is easy to control, and a highly feasible way is provided for reducing the cost of the fuel cell and realizing the commercialization.

The invention discloses a preparation method of a cyanuric acid-carbon dot composite nano phosphorescent probe and an application thereof, which belongs to the field of biomaterials. The preparation method comprises the following steps: mixing a manganese chloride tetrahydrate solution with an aqueous solution of tetramethylammonium hydroxide and hydrogen peroxide, carrying out a stirring reaction, centrifuging, washing the precipitate, and drying to obtain manganese dioxide nanosheets; and mixing the ultrasonically treated manganese dioxide nano solution with a room-temperature phosphorescentmaterial suspension, adding a buffer solution, and incubating to obtain the cyanuric acid-carbon dot composite nano phosphorescent probe. The preparation method of the cyanuric acid-carbon dot composite nano phosphorescent probe has the advantages of easily available raw materials, simple process operation, mild reaction conditions, safety, environmental protection and the like; the cyanuric acid-carbon dot composite nano phosphorescent probe provided by the invention has good selectivity, low toxicity, interference resistance and stability in a biomedical detection process, and has great popularization and application values as a biosensor in the biomedical field.

The invention discloses a one-step preparation method of manganese oxide nanometer contrast agent modified by polyethylene glycol for magnetic resonance. 4mmol of manganese chloride tetrahydrate and 10ml of poly(ethylene glycol) bis(carboxymethyl) ether are stirred with magnetic stirring in a condition with nitrogen and are heated to 90-100 DEG C in order to be dissolved to a uniform solution; the solution is continuously heated to 140 DEG C, a reaction is carried out for 1 hour, the solution is heated to 180 DEG C, and a reaction is carried out for 4 hours; heating is stopped, after cooling to room temperature, polyethylene glycol molecules and manganese ions which are not reacted are removed by dialysis, and the water-soluble manganese oxide nanometer contrast agent modified by polyethylene glycol is obtained; and the manganese oxide nanometer contrast agent is stored at 4 DEG C. The one-step preparation method for preparing the manganese oxide nanometer contrast agent for magnetic resonance has simple steps and loose requirements of preparation conditions; the manganese oxide nanometer contrast agent prepared by poly(ethylene glycol) bis(carboxymethyl) ether which is used as a reaction solvent and a surfactant has the advantages of small particle size, uniform size, good dispersibility and stability; polyethylene glycol for surface modification reduces nonspecific adsorption of nano particles, the carried carboxyl is used for connection of targeting molecules, and the contrast agent has good biocompatibility.

The invention discloses an organic mixed waste gas rare earth-based catalytic combustion catalyst and a preparation method and application thereof. The preparation method comprises the following steps: dissolving manganese chloride tetrahydrate and cerous nitrate hexahydrate in an absolute ethyl alcohol aqueous solution of DHTP and DMF, putting the mixed solution into a high-pressure kettle for reaction, filtering, cleaning and soaking reactants into methanol, then putting the CeMn-MOFs product into a vacuum oven for drying, finally storing the CeMn-MOFs product in a dryer, taking a CeMn-MOFsproduct, adding the CeMn-MOFs product into absolute ethyl alcohol, dropwise adding a tetrabutyl titanate ethanol solution into the CeMn-MOFs solution, dropwise adding water into the mixed solution until gel is formed, standing the gel at room temperature, ageing, drying to obtain a CeMn-MOFs@TiO2 structural material, preparing an aqueous solution of cerium nitrate hexahydrate, adding the CeMn-MOFs@TiO2 structural material, stirring at room temperature, drying, and roasting to obtain the CeMn-MOFs@CeO2 / TiO2 catalyst.

The present invention discloses a multielement chelating silicon-rich rice seedling fertilizer and a manufacturing method thereof, the rice seedling fertilizer comprises ammonium nitrate phosphate, calcium superphosphate, potassium sulfate, magnesium sulfate heptahydrate, humic acid, rice husk powder, high temperature water quenched silicon calcium powder, concentrated sulfuric acid, zinc sulfate, ferrous sulfate, copper sulfate, borax, manganese chloride tetrahydrate, complex nutritional type chelating agent (potassium tripolyphosphate + ammonium citrate + fumaric acid) and brassinolide milk powder. The multielement chelating silicon-rich rice seedling fertilizer can be obtained by evenly mixing the biodegradable chelates formed by chelation reaction, the acidified high temperature water quenched silicon calcium powder, and other substances, by use of the multielement chelating silicon-rich rice seedling fertilizer, the fertilizer utilization rate is improved, disease resistance in rice seedlings can be enhanced, root system is well developed, seedlings are thick and strong, seedlings are quick to recover after transplanting, tillering is increased, and the multielement chelating silicon-rich rice seedling fertilizer is an environmentally friendly new rice seedling fertilizer.

The invention relates to the technical field of lithium ion battery ternary positive materials, and discloses a lithium-lanthanum oxide coated lithium ion battery ternary positive material and a preparation method thereof. The ternary positive material comprises the following formula raw materials: manganese chloride tetrahydrate, cobalt nitrate hexahydrate, nickel dichloride hexahydrate, ammoniawater, anhydrous lithium nitrate, anhydrous lithium carbonate and lanthanum chloride hexahydrate. According to the lithium-lanthanum oxide coated lithium ion battery ternary positive material and thepreparation method thereof, in LiMn0.35-55Co0.30-0.45Ni0.15-0.25O2 oxides, the LiCo oxide has good electrical cycling performance, the LiNi oxide has very high specific capacity, the LiMn oxide has high chemical stability, and the ternary oxide is small in NiLi mixing degree and high in electrochemical stability, so that the conductivity of the positive material is improved generally, and the charge-discharge cycle performance of a battery is improved; and a chemically inert lithium-lanthanum oxide coating layer suppresses an interface reaction between the positive material and electrolyte, avoids the loss of an LiMn0.35-55Co0.30-0.45Ni0.15-0.25O2 structure, and enhances the electrochemical stability of the positive material.

An animal cell culture medium, a preparing method thereof and applications of the culture medium are provided. The culture medium comprises 150-230 parts by weight of amino acids or salts thereof, 180-280 parts by weight of carbohydrates, 160-260 parts by weight of inorganic salts, 1-2 parts by weight of vitamins and 0.002-0.003 part by weight of trace elements. The trace elements comprise manganese chloride tetrahydrate, sodium metavanadate, selenious acid, germanium dioxide, potassium bromide, chromium chloride hexahydrate, ammonium metavanadate, rubidium chloride, cadmium chloride, cobalt chloride hexahydrate, barium acetate, zirconyl chloride octahydrate, sodium fluoride, ammonium molybdate tetrahydrate, copper chloride dihydrate, lithium chloride and aluminium chloride hexahydrate. The culture medium is simple and definite in components, convenient to prepare and use, stable in quality, and low in batch differences, and can be particularly used for culturing a plurality of animal cells. Cell growth states are good and stable.

The invention discloses a process for preparing manganese chloride tetrahydrate by absorbing waste gas containing chlorine by low-taste rhodochrosite. Powder of the low-taste rhodochrosite is prepared to be ore pulp with water; the ore pulp carries out absorption reaction with the waste gas containing the chlorine; the obtained ore pulp is carried out filtration; manganese sulfate powder and metal manganese powder are sequentially added in the filtrate to carry out the purification and the filtration; after the filtrate is evaporated and crystallized, solid MnCl2 4H2O product is obtained. Compared with the prior art, the invention has simple technological process and is convenient to operate. The invention solves the problem of treating the waste gas containing the chlorine, makes full use of the oxidizability without adding oxidant and can also highly effectively use a large amount of low-taste rhodochrosite resource which is difficult to use, which realizes sustainable utilization of resources and reutilization of secondary resources and has good application prospect in industry. By adopting ways of displacement of the metal manganese powder and reduction of the manganese sulfate when purifying and eliminating heavy metals, the invention not only has obvious effect but also reduces secondary pollution to the product and saves process of secondary impurity removal.

The invention discloses a corynebacterium diphtheriae culture medium. The corynebacterium diphtheriae culture medium consists of a basic culture medium, an I liquid and an II liquid, wherein the basic culture medium consists of the materials of HyPep5630, Amisoy, Na2HPO4.12H2O, lactic acid, yeast powder and calcium chloride; the I liquid is L-cystine solution; the II liquid consists of the materials of magnesium sulfate, beta-alanine, niacin, pimelic acid, copper sulfate pentahydrate, zinc sulfate heptahydrate and manganese chloride tetrahydrate. The method for preparing diphtheria toxoid by applying the corynebacterium diphtheriae culture medium is culture enabling, two-generation culturing, three-generation culturing, four-generation culturing and fermentation tank culturing. The culture medium is the animal-free culture medium; good culture recovery and multiplication culture are carried out during culture passage; and the toxin production can also reach the requirement of the existing pharmacopoeia criterion. The method for preparing the diphtheria toxoid by using the culture medium has the advantages of being simple to operate, convenient to produce, easy in taking of materials and low in cost.

The invention provides a preparation method of KxMnO2. The size of the prepared KxMnO2 block is 0.5-4 [mu] m. According to the KxMnO2, manganese chloride tetrahydrate, sodium carbonate and potassium hydroxide are used as a manganese source and a potassium source, and the KxMnO2 powder is prepared through coprecipitation, hydrothermal reaction and subsequent calcination processes. Test results showthat the KXMnO2 prepared by treating the precursor with potassium hydroxide with the concentration of 4M has the best electrochemical performance. The potassium ion half-battery assembled by taking the KxMnO2 as the positive electrode material of the potassium ion battery is relatively good in electrochemical performance and has potential application value in the field of potassium ion batteries.