95 results about "Manganous chloride" patented technology

The invention provides a synthesis method of a bromide ion adsorbent for salt lake bromine extraction, and belongs to the technical field of adsorbent preparation, a mixed solution of strontium chloride and manganese chloride and a mixed solution of sodium phosphate and sodium hydroxide are subjected to precipitation reaction to obtain A-Sr4Mn6 (PO4) 6 (OH) 2; the preparation method comprises the following steps: reacting A-Sr4Mn6 (PO4) 6 (OH) 2 with a sodium bromide solution to obtain B-Sr4Mn6 (PO4) 6Br2; and reacting the B-Sr4Mn6 (PO4) 6Br2 with a sodium hydroxide solution to obtain Sr4Mn6 (PO4) 6 (OH) 2, namely the bromide ion adsorbent. The prepared adsorbent can selectively adsorb bromide ions from high-salt brine, and has the advantages of high adsorption capacity, high selectivity, high recyclability and the like; in brine with extremely high chloride ion concentration, low-concentration bromide ions can be selectively adsorbed without being influenced by high-concentration chloride ions; in a high-salt water body, the adsorption capacity on bromide ions is higher; the selective adsorption separation of the chloride ions and the bromide ions is realized.

The invention relates to the technical field of nano-enzyme preparation and electrochemical and colorimetric dual-mode sensing, and particularly discloses a Mn3Fe2.7-atC nano-enzyme, a preparation method thereof and application of the Mn3Fe2.7-atC nano-enzyme in determination of amoxicillin content. The preparation method of the Mn3Fe2.7 at C nano-enzyme is characterized by comprising the following steps: dissolving manganese chloride and trisodium citrate in water to prepare a solution A; dissolving potassium ferricyanide in water to prepare a solution B; adding the solution B into the solution A under a stirring condition, continuously stirring for 16-32 hours after the solution B is added, carrying out suction filtration, and drying the obtained precipitate to obtain a ferromanganese prussian blue analogue precursor; and placing the ferromanganese prussian blue analogue precursor in a tubular furnace, carrying out pyrolysis, and after the pyrolysis is finished, carrying out acid soaking, washing and drying to obtain the Mn3Fe2.7 at C nano-enzyme. When the Mn3Fe2.7 (at) C nano-enzyme is used for measuring the content of amoxicillin, the accuracy is good, and meanwhile, the Mn3Fe2.7 (at) C nano-enzyme has the advantages of interference resistance, stability, good recovery rate and the like.

The invention relates to the technical field of resource recycling of manganese-containing wastewater, in particular to a process for preparing industrial-grade manganese carbonate by using a recycled manganese chloride solution, which adopts a two-stage purification and impurity removal strategy, performs primary purification and impurity removal by using sodium sulfide and sodium fluoride, and performs secondary impurity removal by using iminodiacetic acid grafted chelating resin. According to the invention, the problems of poor adaptability and incomplete impurity removal of the manganese chloride solution in the prior art are solved, the purity of the product is obviously improved so as to meet the requirements of the industrial grade manganese carbonate, and the process flow is simple.

The invention relates to a method for plating aluminum on the surface of a neodymium-iron-boron magnetic material, which comprises the following steps: by taking ionic liquid as an electroplating medium, optionally adding manganese chloride, adding a proper amount of additive, controlling the current distribution in the electroplating process through pulse current, and electroplating at proper temperature and current conditions. And a corrosion-resistant aluminum coating with high binding force and high compactness is obtained on the surface of the neodymium iron boron magnetic material. According to the method, the hydrogen evolution reaction is avoided, the bright and uniform aluminum coating is obtained, and the method is environmentally friendly, stable in process and suitable for high-performance surface protection and functionalization of the neodymium iron boron magnetic material.

The invention provides a manganese-doped ferrocobalt oxide nano particle-coated carbon-nitrogen cubic composite material as well as a preparation method and application of the manganese-doped ferrocobalt oxide nano particle-coated carbon-nitrogen cubic composite material. The preparation method comprises the following steps: firstly doping ferrous sulfate and manganese chloride into ZIF-8, then mixing the ZIF-8 with cobalt nitrate and 2-methylimidazole in methanol, carrying out centrifugal separation to obtain a product, and finally carrying out one-step calcination to realize carbonitriding of the composite material, doping of manganese and generation of nano particles from ferrocobalt oxide. And finally, the manganese-doped ferrocobalt oxide nanoparticle-coated carbon-nitrogen cubic composite material is obtained. Compared with the traditional preparation method, the method disclosed by the invention is simple, mild in reaction condition and high in yield, and the prepared composite material is uniform in morphology and has excellent electro-catalytic performance on the water electrolysis oxygen evolution reaction.

The invention belongs to the field of synthesis of luminescent materials, and relates to a preparation method and application of a zero-dimensional manganese-based hybrid halide nanofiber membrane with reversible photoluminescence and radiation luminescence conversion. The synthetic route is as follows: preparing a precursor from 4-dimethylaminopyridine (DMAP) and hydrochloric acid, then synthesizing zero-dimensional organic-inorganic metal chloride with manganese chloride hydrate (MnCl2. 4H2O) and anhydrous manganese chloride (MnCl2), further mixing the zero-dimensional organic-inorganic metal chloride with polyvinylidene fluoride (PVDF), and performing electrostatic spinning to obtain a nanofiber film; compared with the prior art, the stimuli-responsive reversible PL switch flexible fiber membrane prepared by adopting an electrostatic spinning technology has excellent stability and PL switch performance, and can show efficient PL and RL switching under external stimuli. Meanwhile, the flexible nanofiber film produced by the method has the advantages of one-step synthesis, quick response, repeatability, good portability and low cost, so that the flexible nanofiber film becomes a new application of molecular-level dynamic photonic devices for data storage, information security, optical logic gates, flexible X-ray imaging and the like.

The application relates to a preparation method of an iron-manganese composite-based porous polyurethane cement sponge filler, and belongs to the technical field of sponge fillers. The method solves the defects of the existing sulfur autotrophic denitrification technology. The required proportions of ordinary Portland cement, anhydrous manganese chloride (MnCl2) and ferrous chloride tetrahydrate (FeCl2.4H2O) are weighed, mixed and stirred uniformly, a water phase solution containing a bonding agent polyvinyl alcohol (PVA) and a dispersant sodium polyacrylate (SPAN) is prepared, solid raw materials and the water phase solution are mixed, polyurethane sponge is added into the mixture and stirred, freezing and shaping are carried out, freezing drying is carried out, steam curing is carried out, then, after being cooled to room temperature, the material is washed with deionized water, and finally, drying treatment is carried out. The iron-manganese composite-based porous polyurethane cement sponge filler has a large specific surface area, porosity, rough surface and good hydrophilicity, and has high phosphorus adsorption and sulfur fixation capacity, thereby exhibiting excellent environmental purification performance and excellent microbial adhesion.

The invention discloses a catalyst for synthesizing glycollic acid and a preparation method. The catalyst comprises the following components in percentage by weight: 5-10% of copper oxide, 15-40% of manganese oxide, zirconium oxide or cerium oxide and 50-80% of modified aluminum oxide. The preparation method comprises the following steps: adding a certain amount of copper-containing compound solution into aluminum oxide powder modified by manganese chloride, zirconium chloride or cerium chloride, adding gel containing water, binder methyl cellulose and peptizing agent, uniformly kneading on a kneading machine, and extruding and molding the kneaded material on a banded extruder to obtain the copper-containing aluminum oxide composite material. And drying and roasting to obtain the catalyst for synthesizing glycollic acid. The catalyst for synthesizing glycollic acid, prepared by the invention, takes modified aluminum oxide as a main component, and has better activity and performance; the preparation process provided by the invention is relatively environment-friendly, and has a relatively good application prospect.

The invention provides a nickel-manganese oxide composite material, a preparation method and application, and belongs to the technical field of environmental functional materials and water pollution control, and the preparation method comprises the following steps: adding terephthalic acid, nickel nitrate hexahydrate and manganese chloride tetrahydrate into N, N-dimethylformamide, stirring and mixing, dropwise adding a NaOH solution, transferring into a high-pressure reaction kettle, carrying out a hydrothermal reaction, filtering, washing, and drying to obtain the nickel-manganese oxide composite material. After the reaction is completed, centrifugally washing a mixture in the inner container of the high-pressure reaction kettle, and drying in vacuum to obtain a NiMn-MOF material; and placing the NiMn-MOF in a porcelain boat, calcining, and naturally cooling to room temperature to obtain the nickel manganese oxide composite material. The nickel manganese oxide material prepared by the method shows excellent catalytic activation performance on persulfate, and can realize efficient and rapid degradation of bisphenol A.

The present invention discloses a selenium-doped titanium dioxide-loaded manganese photocatalyst in the field of chemical technology and its use. The photocatalyst is prepared by mixing an ethanol solution of tetrabutyl titanate with an HCl solution of manganese chloride and stirring and aging at room temperature; filtering, washing, and drying to obtain a filter cake; then grinding and mixing the obtained filter cake with selenium powder and a long-chain carboxylate additive to obtain a mixture; and finally calcining the mixture to obtain a selenium-doped titanium dioxide-loaded manganese photocatalyst. The photocatalyst can catalytically oxidize to obtain vinyl sulfate. The prepared vinyl sulfate product is easy to separate and purify and does not pollute the environment. The catalyst preparation process of the present invention is simple and does not require the use of precious metals, thereby achieving higher economic value at a lower cost and is expected to be widely promoted and applied in industry.

The application discloses composite basic manganese chloride and a preparation method and application thereof, and belongs to the technical field of inorganic chemical product preparation. The raw materials used in the preparation method are widely sourced, are lower in price, and the production process steps are simple, the yield is high, and thus the production cost is low. In addition, the preparation method contains a impurity removal step, the harmful ion content of the finally obtained basic manganese chloride product is extremely low, and after use, the product does not have adverse effects on animals and plants. Moreover, in the preparation process, a crystal nucleus agent and a surfactant are introduced, which not only can obtain a product with narrow and uniform particle size distribution, but also can introduce specific nutrient components in the product, can avoid the generation of high-valence manganese components in the drying process, and make the obtained product more easily absorbed and utilized by animals and plants, so that the obtained product can be better used as feed or plant fertilizer.

The invention belongs to the field of pharmaceutical preparations, and relates to a multi-trace element injection and a preparation method thereof. The multi-trace element injection comprises effective components, a stabilizer and water, the effective components comprise chromium chloride, copper chloride, ferric chloride, manganese chloride, sodium molybdate, sodium selenite, zinc chloride, potassium iodide and sodium fluoride, and the stabilizer comprises xylitol, a pH regulator and an additive; and the additive is PEG (Polyethylene Glycol) 400 or PEG 600. The multi-trace element injection provided by the invention can effectively inhibit the loss of iodine in the sterilization process, and the stability, economical efficiency and production controllability of the multi-trace element injection are fundamentally improved.

The invention provides an epoxy resin curing agent containing MOFs as well as a preparation method and application thereof, and the preparation method comprises the following steps: S1, dissolving an organic ligand in an N, N-dimethylformamide (DMF) solution, and dropwise adding a sodium hydroxide aqueous solution into the organic ligand solution to obtain disodium salt; s2, dissolving the disodium salt precipitate obtained in the step (1) in distilled water; slowly dropwise adding 10mL of deionized water into manganese chloride, stirring and dissolving, adding a disodium salt aqueous solution, mixing, and carrying out vacuum drying to obtain a metal organic framework material Mn-NPA; s3, heating the Mn-NPA, and carrying out vacuum drying and activation on the Mn-NPA; s4, Mn-NPA and an imidazole compound are mixed for a load reaction; and S5, filtering and drying the reacted mixture to obtain the epoxy resin curing agent containing MOFs. According to the epoxy resin curing agent containing MOFs, an epoxy resin coating can be prepared into a single component, and the epoxy resin curing agent can be used once a cover is opened and is convenient to use and easy to construct.

The present invention discloses a treatment system and treatment process for sodium methoxide solid waste, which belongs to the field of hazardous waste treatment technology. The system comprises a hydrolysis reactor, an oxidation reactor, a neutralization reactor and a solid-liquid separator connected in sequence; the hydrolysis reactor is connected to an inert gas tank; the oxidation reactor is connected to an ozone generator and a chlorine dioxide generator; the neutralization reactor is connected to a manganese chloride solution storage tank and a sodium hydroxide solution storage tank; the hydrolysis reactor, the oxidation reactor and the neutralization reactor are all connected to an exhaust gas treatment system. The sodium methoxide solid waste treatment process of the present invention can achieve complete and safe disposal of sodium methoxide solid waste, and effectively collects and treats the three wastes of the system throughout the reaction process. At the same time, the sodium methoxide solid waste treatment system of the present invention is built based on the above-mentioned treatment process. Ultimately, the present invention aims to achieve safe disposal of sodium methoxide solid waste while ensuring the safety of the operating environment.

This invention discloses a bimetallic complex with whitening and anti-aging effects, its preparation method, and its application, belonging to the field of biomaterial preparation technology. The preparation method includes S1, dissolving an amino acid in water to obtain solution A; S2, dissolving a metal salt in ethanol to obtain solution B; S3, mixing solutions A and B evenly, and then reacting them through a solvothermal reaction to obtain solution C; S4, washing and drying solution C to obtain the final product. The amino acid in step S1 is at least one of glutamic acid and aspartic acid; the metal salt in step S2 is copper acetate and zinc acetate, copper acetate and manganese chloride, or copper acetate and cobalt nitrate; the solvothermal reaction conditions in step S3 are: temperature 60-110℃, reaction time 2-48h. The prepared bimetallic complex has both whitening and anti-aging effects, providing a new direction for the application of BioMOFs materials.

The invention provides a preparation method of a chlorine salt conversion film with high corrosion resistance, which comprises the following steps: dissolving manganese chloride and calcium chloride in water, then adding ammonium dihydrogen phosphate, sodium nitrate and EDTA (Ethylene Diamine Tetraacetic Acid), and carrying out conversion treatment to obtain a conversion film solution containing free Mn < 2 + > and Ca < 2 + > and Mn < 2 + > and Ca < 2 + > complexed by EDTA; placing the conversion film solution in a water bath kettle with the temperature of 50-60 DEG C for heating and heat preservation; the magnesium alloy is put into a conversion film solution, monohydrogen phosphate of Mn < 2 + > preferentially nucleates and grows to form a high-thickness film layer, then monohydrogen phosphate of Mn < 2 + > and Ca < 2 + > complexed by EDTA preferentially performs targeted nucleation at the defect position of the film layer, and a conversion film with high thickness and density is formed on the surface of the magnesium alloy. According to the preparation method of the chlorine salt high-corrosion-resistance conversion film, the preparation cost is low, and the prepared film layer is thick and uniform.

The present application relates to the technical field of fuel additive, in particular to a high-energy cleaning type composite solid fuel additive and a preparation method thereof. The additive comprises the following raw materials: myristic acid, stearic acid, a composite catalytic unit, modified soybean lecithin, tributyl borate, butylated hydroxyanisole and polyethylene glycol monostearate. The composite catalytic unit is prepared by coordination of diethyl phosphinic acid with manganese chloride, lanthanum chloride and cerium chloride; the modified soybean lecithin is obtained by ammonolysis and intramolecular lactonization and contains a five-membered cyclic phosphonate structure. During preparation, the components are dispersed by ultrasonic dispersion after being loaded on a melting carrier, and then solidified and formed. The additive realizes cleaning and repair integration through double-metal synergistic catalysis and combustion strengthening, and the composite carrier can controllably release and adapt to all working conditions. The product is soft and easy to discharge, has high economic efficiency and environmental compatibility, and is convenient to store and use.

This invention provides a method for producing PD-1 antibodies with high protein expression levels, high antibody activity, and / or high galactosyl levels. This method involves culturing cells in a culture medium until the target protein is obtained. The culture temperature is 37°C, which is then lowered to 33-34°C on the 5th day of culture. The culture medium also contains additives, namely galactose and manganese chloride. The concentrations of galactose and manganese chloride added are 0.05-6 mM and 0.05-3 μM, respectively. The culture medium consists of a basal medium and a feed medium. The basal medium is Star CHO, and the feed medium is Star CHO Feed and CDFS36. The basal medium also contains 1 g / L poloxamer. The Star CHO Feed feed is added at 4% / 5% / 6% / 6% / 5% / 4% of the initial culture volume each time, and the CDFS36 feed is added at 0.4% / 0.5% / 0.6% / 0.6% / 0.5% / 0.4% of the initial culture volume each time. The additives galactose and manganese chloride, as well as the Star CHO feed feed... Feed and CDFS36 were added every 2 days starting from day 3 of culture; the dissolved oxygen in the culture system was 40%, and the pH was 7.0 ± 0.1; the rotation speed of the culture system was 240 rpm.

The application discloses a kind of metal organic framework material and its preparation method and application, wherein, preparation method includes the following preparation steps: zinc acetate, phycocyanin is dissolved in water, and mixed solution is prepared;Mixed solution is added to 2-methyl imidazole aqueous solution mixing stirring, centrifugation, and the precipitate is washed with water, dispersed in water, and nanoparticle dispersion is prepared;Nanoparticle dispersion, epigallocatechin gallate and manganese chloride are added to water mixing stirring, centrifugation, and the precipitate is washed with water, dispersed in water, and metal organic framework material is prepared.The metal organic framework material prepared by the application has free radical scavenging antioxidant capacity;It has anti-inflammatory effect, can reduce liver damage and necrosis, and is suitable for the treatment of acute liver injury;It also has the effects of regulating inflammatory response, promoting macrophage transformation and inhibiting T cell activation, and is suitable for immune regulation.

The invention discloses an oat hydroponic nutrient solution formula as well as a preparation method and application thereof, and belongs to the technical field of agriculture. The oat hydroponic nutrient solution comprises the following components: ammonium sulfate, sodium dihydrogen phosphate dihydrate, potassium nitrate, anhydrous calcium chloride, magnesium sulfate heptahydrate, manganese chloride tetrahydrate, ammonium molybdate tetrahydrate, boric acid, zinc sulfate heptahydrate, copper sulfate pentahydrate, ferrous sulfate heptahydrate and disodium ethylene diamine tetraacetate. The hydroponic nutrient solution provided by the invention is reasonable in component collocation, meets the requirements of the oat for nutrient elements in the growth process, remarkably increases the biomass and nutrient content of the overground part of the oat obtained through hydroponic culture by adjusting a nitrogen source, and ensures the high-quality forage grass characteristics of the oat. Oat forage grass cultivated by using the culture solution disclosed by the invention reaches a special-grade level.

The invention provides a rock core lossless T2 cut-off value test method and system, and the method comprises the steps: 1, enabling a rock core to be completely saturated with water through a vacuumizing method, and testing the T2 spectrum of the saturated water rock core; 2, sequentially displacing the rock core from low to high by adopting gas drive to remove movable water; 3, heavy water is adopted for sequentially displacing the rock core from low to high at different speeds; and 4, carrying out accumulation calculation on the saturated water T2 spectrum and the T2 spectrum after heavy water displacement, drawing an accumulation T2 curve and determining a T2 cutoff value. According to the method, the movable water is removed through gas drive and heavy water displacement, the problems that in an existing centrifugal method, a rock core is prone to being damaged, and the centrifugal rate is complex to determine are solved, the defect that manganese ions shield boundary movable water in manganese chloride solution displacement is overcome, and the purposes of true lossless effect and high precision are achieved.

The invention relates to a manganese-based metal-organic framework for fluorescence detection of bisphenol A as well as a preparation method and application of the manganese-based metal-organic framework. The preparation method comprises the following steps: dissolving manganese chloride tetrahydrate, 4, 4 ', 4' '-[1, 3, 5-benzenetriamide] tribenzoic acid and 1, 10-phenanthroline in a mixed solvent to obtain a mixed solution; stirring the mixed solution at room temperature, reacting in a reaction kettle, cooling, washing and drying to obtain the manganese-based metal-organic framework used for fluorescence detection of bisphenol A, recorded as Mn-MOF. The MOF material provided by the invention has excellent photoelectric properties and water stability at the same time, can realize rapid, high-sensitivity and high-selectivity fluorescence detection of bisphenol A in a water system, and also has excellent proton conduction performance.

The invention belongs to the technical field of microalgae culture, and particularly provides an improved culture solution for haematococcus pluvialis culture and a preparation method thereof. The culture solution is prepared from 1.5 to 2.5 mg / L of alpha-cyclodextrin embedded sodium acetate, 0.5 to 0.5 mg / L of cobalt nitrate hexahydrate, 0.05 to 1 mg / L of copper sulfate, 0.3 to 0.9 mg / L of zinc sulfate heptahydrate, 1.5 to 2.5 mg / L of manganese chloride tetrahydrate, 3 to 7 mg / L of boric acid, 8 to 20 mg / L of sodium carbonate, 10.0 to 20.0 mg / L of disodium hydrogen phosphate dihydrate, 1200 to 1400 mg / L of sodium nitrate, 0.5 to 3 mg / L of EDTA (Ethylene Diamine Tetraacetic Acid), 20 to 50 mg / L of calcium chloride, 70 to 100 mg / L of magnesium sulfate heptahydrate, 50 to 80 mg / L of monopotassium phosphate trihydrate, 0.5 to 1.0 mg / L of ferrous sulfate heptahydrate and 0.01 to 0.03 mg / L of ammonium molybdate tetrahydrate. According to the invention, alpha-cyclodextrin is introduced to embed sodium acetate, ferrous sulfate heptahydrate and ammonium molybdate tetrahydrate are added, and a sodium carbonate-disodium hydrogen phosphate-potassium dihydrogen phosphate composite buffer system is constructed, so that the problem of easy imbalance of traditional carbon source supply is solved, and the defect of single and short elements of a traditional formula can be overcome; pH fluctuation caused by cell metabolism acid production during high-density culture can be effectively coped with, it is ensured that cells are always in a suitable acid-base environment, and nutrient absorption and metabolism pathways are stabilized.

The invention belongs to the technical field of preparation of X-ray storage materials, and discloses a long-afterglow scintillator, a scintillator film and a preparation method of the long-afterglow scintillator film. The preparation method of the long-afterglow scintillator comprises the following preparation steps: mixing a manganese precursor solution with a cadmium precursor solution, and then adding a cesium precursor solution to obtain the long-afterglow scintillator, the manganese precursor solution is a mixed solution of manganese chloride and hydrochloric acid; the cadmium precursor solution is a mixed solution of cadmium chloride and hydrochloric acid; the cesium precursor solution is a mixed solution of cesium chloride and hydrochloric acid. The long-afterglow scintillator is prepared by adopting a simple coprecipitation method, the operation is simple and convenient, a long-time high-temperature calcination process is avoided, and the preparation time consumption is remarkably shortened; large-scale production of the scintillator powder can be achieved, and meanwhile it is guaranteed that the product has high purity.

To provide a zinc compound or zinc-manganese oxide secondary battery using an aqueous electrolyte.SOLUTION: In order to realize a zinc compound or zinc-manganese oxide secondary battery, a mixed aqueous solution containing zinc chloride as the main component of the electrolyte and manganese chloride as the secondary component of the electrolyte is used.SELECTED DRAWING: None

The invention discloses a metal organic framework material and a preparation method and application thereof.The preparation method comprises the following preparation steps that zinc acetate and phycocyanin are dissolved in water, and a mixed solution is prepared; adding the mixed solution into a 2-methylimidazole aqueous solution, mixing and stirring, centrifuging, taking precipitate, washing with water, and dispersing in water to prepare a nano-particle dispersion liquid; and adding the nanoparticle dispersion liquid, epigallocatechin gallate and manganese chloride into water, mixing, stirring, centrifuging, taking precipitate, washing with water, and dispersing in water to obtain the metal organic framework material. The metal organic framework material prepared by the invention has free radical scavenging and anti-oxidation capabilities; the traditional Chinese medicine composition has an anti-inflammatory effect, can relieve liver injury and necrosis, and is suitable for treating acute liver injury; the compound also has the effects of regulating inflammatory response, promoting macrophage transformation and inhibiting T cell activation, and is suitable for immune regulation and control.

The invention provides a green, stable and long-life RTP-coated IPA material and a preparation method and application thereof.The method comprises the steps that 1, lignin is catalytically degraded through ternary DES comprising a hydrogen bond acceptor, a hydrogen bond donor and an enhancer, and lignin degraded through DES is obtained; wherein in the DES, the hydrogen bond acceptor is choline chloride or allyltrimethylammonium chloride, the hydrogen bond donor is lactic acid, and the enhancer is ethylene glycol or manganese chloride; (2) carrying out carbonization reaction on the lignin degraded by the DES and boric acid to obtain CDs doped with an element B; (3) crosslinking the CDs with a polymer matrix to obtain an RTP material; and (4) carrying out a cross-linking reaction on the RTP material and isophthalic acid to obtain the green, stable and long-life RTP-coated IPA material. The green, stable and long-life RTP-coated IPA material disclosed by the invention has excellent phosphorescence life and stability in a solvent, and has important application potential.

The present invention belongs to the field of heavy metal pollution control and remediation technology, and specifically relates to a manganese dioxide nanoparticle @ modified phosphate tailings composite material, and its preparation method and application. The present invention first activates the phosphate tailings with an alkali to generate an alkali-activated phosphate tailings with more surface defects and functionalized sites; then, the alkali-activated phosphate tailings, manganese chloride, and a surfactant, polyvinyl pyrrolidone, are mixed and surface-modified under acidic conditions so that the manganese chloride is loaded on the alkali-activated phosphate tailings to obtain an intermediate; finally, the intermediate is oxidized to obtain a manganese dioxide nanoparticle @ modified phosphate tailings composite material. The manganese dioxide nanoparticle @ modified phosphate tailings composite material of the present invention uses manganese dioxide nanoparticles to achieve efficient adsorption of heavy metal ions in water, overcoming the technical defects of the existing modified phosphate tailings adsorption materials or manganese dioxide composite materials.

The invention discloses a culture medium for promoting intestinal colonization of probiotics. Every 1000 parts by weight of water of the culture medium is prepared from the following components in parts by weight: 2 to 10 parts of casein, 4 to 12 parts of yeast extract powder, 10 to 12 parts of beef extract powder, 1.5 to 2.5 parts of trisodium citrate or triammonium citrate, 4.5 to 5.5 parts of sodium acetate, 0.1 to 0.3 part of magnesium sulfate heptahydrate, 0.05 to 0.1 part of manganese chloride and 1 to 3 parts of dipotassium phosphate. When the culture medium is used for culturing the probiotics, the secretion amount of exopolysaccharides, proteins and other substances can be remarkably increased, a protective layer is formed, the stress resistance of the strain is improved, the survival ability of the probiotics in a complex gastrointestinal tract environment is improved, and a new strategy is provided for development of the oral probiotics.

The invention relates to the technical field of fuel additives, in particular to a high-energy clean type composite solid fuel additive and a preparation method thereof. The additive comprises the following raw materials: myristic acid, stearic acid, a composite catalytic unit, modified soybean lecithin, tributyl borate, butyl hydroxy anisd and polyethylene glycol monostearate. The composite catalytic unit is prepared from diethyl phosphinic acid, manganese chloride, lanthanum chloride and cerium chloride through coordination; the modified soybean lecithin is obtained through ammonolysis and molecular lactonization and contains a five-membered cyclic phosphonate structure. The preparation method comprises the following steps: melting the carrier, ultrasonically dispersing the components, curing and molding. Combustion is enhanced through synergistic catalysis of double metals, cleaning and repairing integration is achieved through modified lecithin, the composite carrier is controlled to release and adapts to all working conditions, the product is soft and easy to discharge, high economical efficiency and environmental compatibility are achieved, and storage and use are convenient and fast.