84 results about "Manganese chloride tetrahydrate" patented technology

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 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 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 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 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 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 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.