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37 results about "Manganese acetylacetonate" patented technology
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Method for preparing lithium-sulfur battery composite positive electrode material by electrostatic spinning method and application of lithium-sulfur battery composite positive electrode material
InactiveCN109768250AImprove lithium storage performanceLow priceMaterial nanotechnologyCell electrodesFiberCarbon fibers
The invention discloses a method for preparing a lithium-sulfur battery composite positive electrode material by an electrostatic spinning method and application of the lithium-sulfur battery composite positive electrode material. The method comprises the steps of 1) synthesizing a PAN / PS / acetylacetone manganese nanofiber used as a precursor by an electrostatic spinning technology; and 2) obtaining a MnO nanoparticle composite nitrogen-doped porous carbon nanofiber composite material by the pre-oxidization and subsequent high-temperature carbonization process according to the characteristics of high-temperature decomposition of PS. The composite material is simple in preparation process and low in cost, is easy to process and can be used for production on a large scale. The nitrogen-dopedcarbon fiber framework of the material has a stable three-dimensional space structure, the conduction of lithium ion and electron is facilitated, and the conductivity of the sulfur composite positiveelectrode is improved; and meanwhile, MnO particles are grown in the nitrogen-doped porous carbon fibers in an in-situ way by the electrostatic spinning method, enough storage space is provided for elemental sulfur, lithium polysulfide can be effectively absorbed, and the shuttle effect of the lithium-sulfur battery is prevented.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of trimanganese tetroxide nanoparticles with magneto-optical double functions
InactiveCN101694799ANot easy to quenchGuaranteed stabilityInorganic material magnetismManganese oxides/hydroxidesDispersitySolubility
The invention relates to a preparation method of trimanganese tetroxide nanoparticles with magneto-optical double functions, which belongs to a preparation method of nanoparticles with magneto-optical double functions. The magneto-optical double functional nanoparticles prepared in the prior art has the defects of unstable optical property and easy quenching of fluorescence of luminants. The preparation method comprises the following steps: preparing a manganese acetylacetonate precursor; preparing oil soluble trimanganese tetroxide nanoparticles with surfaces having oleyl amine for coordination; preparing cyclohexane solution; preparing water soluble trimanganese tetroxide nanoparticles coated by silicon dioxide, wherein the surfaces of the water soluble trimanganese tetroxide nanoparticles have a great deal of amino groups; and preparing water soluble trimanganese tetroxide nanoparticles with the magneto-optical double functions. The invention has the advantages that the nanoparticles have stable magnetism, good luminous performance and difficultly quenched fluorescence; the preparation device is simple; the prepared particles have uniform grain diameter, good dispersity and good water solubility; the raw materials are easily obtained and have low cost; the operation is simple; and no pollution to the environment is generated.
Owner:SHANGHAI NORMAL UNIVERSITY
Preparation method of flexible carbon fiber with superamphiphobic property
ActiveCN107237128ASuperamphiphobicShape adjustableCarbon fibresArtifical filament manufactureCarbon fibersN dimethylformamide
The invention relates to a preparation method of flexible carbon fiber with superamphiphobic property, and belongs to the technical field of production of superamphiphobic materials. The preparation method comprises the following steps of dissolving polyacrylonitrile and manganeseacetylacetonate into N,N-dimethylformamide, forming a uniform electrostatic spinning solution, and adopting an electrostatic spinning technique, so as to obtain nanometer spinning fibers; pre-oxidizing the nanometer spinning fibers, placing under the nitrogen atmosphere, and carbonizing at high temperature, so as to obtain manganese-doped nanometer carbon fiber; soaking the manganese-doped nanometer carbon fiber into an ethyl alcohol solution of POTS (1H,1H,2H,2H-perfluorooctyltriethoxysilanes), so as to obtain the flexible carbon material with superamphiphobic property. The preparation method has the advantages that the technology is simple, the shape of the spinning fiber can be adjusted, and the green and environment-friendly effects are realized; the average size of the spinning carbon fiber is 300 to 450nm. The prepared carbon fiber with the superamphiphobic property has the advantages that the contact angle is about 155 degrees at different pH (potential of hydrogen) values, the rolling angle is about 4 degrees, and the contact angles for different types of oil are about 152 DEG C.
Owner:YANGZHOU UNIV
Method for synthesis of 5-nitryl-4, 5-dihydrofuran derivant
The invention discloses a synthetic method of 5-nitryl-4, 5-dihydrofuran derivates, comprising: taking one of Beta-nitrostyrene with a substituent on a benzene ring, Beta-nitrofuran ethylene with a substituent on a furan ring, Beta-nitrothiophene ethylene with a substituent on a thiophene ring, Beta-nitropyrrole ethylene with a substituent on a pyrrol ring and Beta-nitropyridine ethylene with a substituent on a pyridine ring as well as manganic acetyl acetonate (III) as reactants, and anhydrous alcohol as a reaction solvent, and preparing the 5-nitryl-4, 5-dihydrofuran derivates by the reaction at a temperature of between 30 and 70 DEG C. The raw materials used in the method are low-priced and can be obtained easily, and have a plurality of species, and the synthesized products can serve as potential molecules having the biological activity and key intermediates; and the method utilizes ethanol as a reaction medium, so as to reduce the pollution, shorten the reaction time, simplify the reaction operation and post treatment process, and reduce production costs. The method has advantages of good selectivity and high yield.
Owner:SUZHOU UNIV
Method for preparing manganese ferrite-graphene composite materials
InactiveCN105883929AImprove absorbing performanceGood dispersionMaterial nanotechnologyMagnetic/electric field screeningOrganic solvent2-Pyrrolidone
An embodiment of the invention discloses a method for preparing manganese ferrite-graphene composite materials. The method includes steps of 1), adding graphite oxide into 2-pyrrolidone and dispersing the graphite oxide; 2), adding iron acetylacetonate, manganeseacetylacetonate and octadecylamine into the 2-pyrrolidone to obtain solution, heating the solution until the temperature of the solution reaches 100-150 DEG C, maintaining the temperature of the solution unchanged for 20-50 min, then heating the solution until the solution is boiling and flows back, and maintaining the temperature of the solution unchanged for 1-5 h; 3), adding organic solvents into the solution to suddenly stop reaction, separating reaction products and washing and drying the reaction products. A mass ratio of the graphite oxide to the iron acetylacetonate is 0.1-0.2; a mass ratio of the graphite oxide to the manganeseacetylacetonate is 0.3-0.45; a mass ratio of the graphite oxide to the octadecylamine is 1:80-1:40. The method has the advantages that the average diameters of manganese ferrite nano-particles in the manganese ferrite-graphene composite materials prepared by the aid of the method are 10 nm, the manganese ferrite nano-particles are excellently dispersed on graphene, and accordingly the manganese ferrite-graphene composite materials prepared by the aid of the method are excellent in wave absorbing property.
Owner:BEIJING NORMAL UNIVERSITY +1
Manganese oxide modified vanadium-based catalyst for denitrifying diesel vehicle tail gas as well as preparation method and application thereof
InactiveCN108816218AImprove denitrification activitySimple processGas treatmentHeterogenous catalyst chemical elementsAir atmosphereManganese oxide
The invention relates to a manganese oxide modified vanadium-based catalyst for denitrifying diesel vehicle tail gas as well as a preparation method and application thereof. The preparation method comprises the following steps: S1: dissolving acetylacetone manganese (III) to obtain a manganese precursor solution; S2: adding a vanadium-based catalyst into the manganese precursor solution; after stirring and drying, roasting in an air atmosphere to obtain the manganese oxide modified vanadium-based catalyst. In the manganese oxide modified vanadium-based catalyst, the mass percent of manganese oxide is 0.03 to 0.08 percent. The preparation method provided by the invention has the advantages of convenience, easiness for controlling operation and good repeatability; the prepared manganese oxide modified vanadium based catalyst has higher denitrification activity and a temperature window is expanded by 40 DEG C; the NOx conversion rate reaches 90 percent or above in a range of 255 to 465 DEG C; the manganese oxide modified vanadium-based catalyst can be widely applied to denitrification treatment of the diesel vehicle tail gas.
Owner:GUANGDONG UNIV OF TECH +1
Method for preparing 64 Cu marked and folic acid targeted functional trimanganese tetroxide nano-particles with stable polyethyleneimine
InactiveCN105770922AImprove stabilityGood biocompatibilityPowder deliveryRadioactive preparation carriersAcetylationManganese acetylacetonate
The invention relates to a method for preparing 64 Cu marked and folic acid targeted functional trimanganese tetroxide nano-particles with stable polyethyleneimine.The method comprises the steps that folic acid is mixed with NH2-PEG-COOH to obtain FA-PEG-COOH; manganese tris(4-oxopent-2-en-2-oate) is in reaction with PEI to obtain Mn3O4-PEI NPs, FI modification is performed, NOTA-NHS and activated FA-PEG-COOH are added, acetylation is performed, and MOTA-Mn3O4-PEI-Ac-FI-(PEG-FA)NPs is obtained; ammonium acetate is in reaction with [64 Cu]CuCl2 and added to an NOTA-Mn3O4-PEI-Ac-FI-(PEG-FA)NPs solution then, and the nano-particles are obtained after reaction.According to the method, the preparation process is simple and easy to operate; the obtained material has an excellent PET / MR double modal imaging effect, and the method has a potential application value in the multimodal nano contrast agent field.
Owner:DONGHUA UNIV +1
MnY catalyst for catalytically removing indoor formaldehyde and preparation method thereof
InactiveCN107837819AThe enrichment effect is obviousIncrease chance of contactMolecular sieve catalystsDispersed particle separationMolecular sieveActive component
The invention relates to the field of catalysts, preparation methods and applications thereof, in particular to a MnY catalyst for catalytically removing indoor formaldehyde and a preparation method thereof. The catalyst is composed of a catalyst carrier NaY molecular sieve and an active component Mn. Manganeseacetylacetonate (II) is a manganese source of the active component Mn. The preparation method comprises the following steps: soaking the NaY molecular sieve in an acetone solution of manganeseacetylacetonate (II), and stirring the mixture till an acetone solvent is fully volatilized to obtain a catalyst precursor; and carrying out temperature programming activation in an activated atmosphere, and then cooling the mixture to room temperature and taking the same out to obtain the MnY catalyst. The MnY catalyst prepared by the method removes formaldehyde in indoor air. As Mn oxide active centers which have good catalytic effects in oxidizing and removing formaldehyde are dispersed to the surface of the Y molecular sieve, formaldehyde adsorbed to the surface of the Y molecular sieve is degraded to CO2 and H2O without being affected by adsorption capacity. The method is concise, quick and environment-friendly, and shows a relatively good catalytic performance in catalytic removal of indoor formaldehyde.
Owner:YUNCHENG UNIVERISTY
Preparing method of yttrium manganese acid nanometer material
InactiveCN106430319AHigh purityThe preparation process route is simpleMaterial nanotechnologyMetal/metal-oxides/metal-hydroxide catalystsDispersityMetallic materials
The invention belongs to the field of inorganic nonmetallic materials preparation, and relates to a preparing method of a yttrium manganese acid nanometer material. The method comprises the steps of fully dissolving yttrium acetylacetone and manganese acetylacetone in a methanol solution, conducting a solvothermal reaction, conducting filtering and washing, and then conducting drying and calcination cooling to obtain the yttrium manganese acid material. According to the preparing method of the yttrium manganese acid nanometer material, the technology is simple, convenient and easy, the product purity is high, the preparing cost is low, and the size of the yttrium managanese acid nanometer material is 20-30 nm; in addition, both the homogeneity and the dispersity of the product are good, the manufacturing technique is simple, the sintering temperature is low, and the yttrium manganese acid nanometer material can be easily applied to mass production in practice. As a photocatalytic material, the yttrium manganese acid nanometer material has a high catalytic activity and has wide application prospects in the field of degradation of dyestuff wastewater and indoor noxious gases, photocatalysis sterilization and the like.
Owner:BOHAI UNIV
Ce-Mn/SAPO-34 molecular sieve catalyst and preparation method thereof
InactiveCN108262070AGood dispersionGuaranteed loadMolecular sieve catalystsDispersed particle separationCerium nitrateMorpholine
The invention discloses a Ce-Mn / SAPO-34 molecular sieve catalyst and a preparation method thereof. The method is characterized by comprising the following steps: 1) mixing phosphoric acid with deionized water, adding pseudo-boehmite, uniformly stirring, then adding tetraethyl orthosilicate, dropwise adding morpholine to obtain a mixture A; 2) carrying out crystallization on the gel mixture A, cooling at room temperature, and separating the solid crystallized product from mother liquor, washing to be neutral, drying and roasting to obtain a catalyst carrier SAPO-34 molecular sieve; 3) adding manganese acetylacetone and cerium nitrate into acetone, fully stirring until the mixture is dissolved, adding the SAPO-34 molecular sieve obtained by the step 2), so as to obtain a mixture B, wherein n(Ce / Mn) in the mixture B is equal to 0, 0.1, 0.2, 0.3 or 0.4; 4) subjecting the mixture B obtained in the step 3) to impregnation under an ultrasonic condition and stirring to obtain a catalyst Ce-Mn / SAPO-34 precursor; 5) drying and roasting the Ce-Mn / SAPO-34 precursor obtained in the step 4) to obtain the Ce-Mn / SAPO-34 molecular sieve catalyst.
Owner:CHONGQING UNIV
Acetylacetone manganese-initiated RAFT (reversible addition fragmentation chain transfer) polymerization method
The invention discloses an acetylacetone manganese-initiated RAFT (reversible addition fragmentation chain transfer) polymerization method which comprises the following steps of: preparing a bulk polymerization reaction system comprising a vinyl monomer, an initiator and a chain transfer agent or a solution polymerization reaction system comprising a vinyl monomer, an initiator, a chain transfer agent and a solvent; and performing a polymerization reaction at 25-100 DEG C to obtain a polymer, wherein the molar ratio of the vinyl monomer to the initiator to the chain transfer agent is 200:(0.2-4):(0.5-2), the molar ratio of the vinyl monomer to the solvent is (0.5-3):1, and the initiator is acetylacetone manganese. The method disclosed by the invention adopts acetylacetone manganese as an RAFT polymerization initiator for the first time, is suitable for a wide range of monomers, and is effective to methacrylates, vinyl acetates and styrene monomers; the temperature application range is wider, and the application universality is enhanced; and as an initiator, the acetylacetone manganese can realize a higher end group functional degree of the tail end of the polymer.
Owner:ZHEJIANG KELI NEW MATERIAL TECH CO LTD
Amphiphilic superparamagnetism magnetic resonance contrast medium
InactiveCN101518656BSuperparamagnetic hasMonodisperseNMR/MRI constrast preparationsSuperparamagnetismChloroformate
Owner:SHANGHAI NORMAL UNIVERSITY
Preparation method of micro-branched micro-crosslinked polyacrylamide
ActiveCN107365402AImprove shear resistanceImprove thermal stabilityDrilling compositionHydrolysisPolyacrylamide
The invention discloses a preparation method of micro-branched micro-crosslinked polyacrylamide. The preparation method comprises the following steps: adding an acrylamide monomer of which the mass percent is 20-30% into water; then adding dimethylaminoethyl methacrylate, persulfate, a chain transfer agent, EDTA and manganese acetylacetonate, regulating the pH value to 5-8, and initiating a polymerization reaction at 20-40 DEG C; after 5-10 hours of reaction, taking out a colloid, and performing granulation; and the adding NaOH accounting for 1.5-3% of the mass of the colloid, and performing hydrolysis at 80-100 DEG C for 1-3 hours to obtain the finished product. The micro-branched micro-crosslinked polyacrylamide prepared by the method disclosed by the invention has high viscosity, and has excellent thermal stability and mechanical shearing resistance; and experiments indicate that the viscosity retention rate of the micro-branched micro-crosslinked polyacrylamide disclosed by the invention after mechanical shearing is more than 81%, and the viscosity retention rate after 90 days of aging is 79% or above. The method disclosed by the invention has the advantages of mild reaction conditions, simple operation process, low cost and the like.
Owner:CHINA PETROLEUM & CHEM CORP +1
Starch adhesive
InactiveCN105585975AFast dryingGood adhesionNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesAdhesivePolyvinyl alcohol
The invention discloses a starch adhesive. The starch adhesive is prepared through the steps of firstly, adding deionized water, polyvinyl alcohol and n-octanol to a reaction kettle with a stirrer, raising the temperature to 88-92 DEG C, and keeping the temperature for 30 min so that polyvinyl alcohol can be completely dissolved; secondly, cooling the mixture to 52-57 DEG C, adding starch, copper sulfate and manganese acetyllacetonate, adding sulfur peroxide after the mixture is evenly stirred, and making the mixture react for 60-80 min under unceasing stirring; thirdly, adding sodium hydroxide (30% solution), regulating the PH value to 9-10, adding melamine, and making the mixture react for 60-80 min; fourthly, adding a sodium thiosulfate (30%) solution, adding the rest of deionized water after the mixture is evenly stirred, conducting stirring for 30-40 min so that the solution can be in the semitransparent state, and then adding polyacrylonitrile and diisocyanate to react for 40-60 min; fifthly, adding potassium sorbate and kaolin, and conducting stirring for 30-40 min to obtain the product. The product is strong in adhesive strength, stable in water resistance, long in storage period, high in drying speed and good in permeability and mobility.
Owner:姚晓明
Amphiphilic superparamagnetism magnetic resonance contrast medium and preparation method thereof
InactiveCN101518656ASuperparamagnetic hasMonodisperseNMR/MRI constrast preparationsChloroformateSuperparamagnetism
The invention discloses an amphiphilic superparamagnetism magnetic resonance contrast medium and a preparation method thereof. The contrast medium takes MnFe2O4 nanometer grains as cores; polyalcohol molecules evenly clad the surfaces of the MnFe2O4 nanometer grains; and part of hydroxies on the outer ends of the polyalcohol molecules react with 9-fluorenylmethyl chloroformate to form amphiphilic shell structures through acyl chloride reactions. The preparation method comprises the following steps: taking the polyalcohol as a solvent, pyrolyzing ferric and manganese acetylacetonates at a high temperature to obtain the MnFe2O4 nanometer grains clad by the polyalcohol molecules through, and then carrying out the acyl chloride reaction between 9-fluorenylmethyl chloroformate and polyalcohol hydroxies on the surfaces of the nanometer grains. The contrast medium has the advantages of small grain size, high crystallinity, high saturation magnetization rate, high relaxation capability, good biological compatibility, low toxicity and good stability. The preparation method has the advantages of simple operation, low cost, low requirements on the equipment, and easy realization of industrialized production.
Owner:SHANGHAI NORMAL UNIVERSITY
Magnetic ferrite nanocrystal as well as preparation method and application thereof
InactiveCN113548697AGood water solubilityGood biocompatibilityInorganic material magnetismFerroso-ferric oxidesPhosphateOleylamine
The invention belongs to the technical field of nano materials, and particularly relates to a magnetic ferrite nanocrystal, a preparation method and application thereof. The magnetic ferrite nanocrystal is obtained by the following steps: S1, adding ferric acetylacetonate, manganese acetylacetonate, zinc acetylacetonate, oleic acid and oleylamine into dibenzyl ether, and conducting reacting at 105-115 DEG C; S2, raising the temperature to 200-230 DEG C; S3, continuously raising the temperature to 290 to 310 DEG C; S4, conducting cooling, adding ethanol, and performing magnetic separation to obtain modified Fe3O4; S5, mixing the modified Fe3O4, chloroform and DSPE-PEG-COOH to obtain a mixed solution; S6, adding water into the mixed solution, and conducting heating at 50-70 DEG C to obtain Fe3O4-coated COOH; and S7, adding O-benzotriazole-N,N,N',N'-tetramethylurea hexafluorophosphate, N,N-diisopropylethylamine and streptavidin into the Fe3O4-coated COOH, and carrying out a reaction on the Fe3O4-coated COOH and the N,N-diisopropylethylamine and the streptavidin so as to obtain Fe3O4-coated SM.
Owner:徐州捷创生物科技有限公司
A preparation method of 64cu-labeled folic acid-targeted functionalized polyethyleneimine stabilized trimanganese tetraoxide nanoparticles
InactiveCN105770922BImprove stabilityGood biocompatibilityPowder deliveryRadioactive preparation carriersAcetylationManganese acetylacetonate
The invention relates to a method for preparing 64 Cu marked and folic acid targeted functional trimanganese tetroxide nano-particles with stable polyethyleneimine.The method comprises the steps that folic acid is mixed with NH2-PEG-COOH to obtain FA-PEG-COOH; manganese tris(4-oxopent-2-en-2-oate) is in reaction with PEI to obtain Mn3O4-PEI NPs, FI modification is performed, NOTA-NHS and activated FA-PEG-COOH are added, acetylation is performed, and MOTA-Mn3O4-PEI-Ac-FI-(PEG-FA)NPs is obtained; ammonium acetate is in reaction with [64 Cu]CuCl2 and added to an NOTA-Mn3O4-PEI-Ac-FI-(PEG-FA)NPs solution then, and the nano-particles are obtained after reaction.According to the method, the preparation process is simple and easy to operate; the obtained material has an excellent PET / MR double modal imaging effect, and the method has a potential application value in the multimodal nano contrast agent field.
Owner:DONGHUA UNIV +1
Spinel type ZnFeMnO4 nano material, and preparation method and application thereof
ActiveCN113976139AEfficient and selective degradationGood removal effectMaterial nanotechnologyIron oxides/hydroxidesPyrrolidinonesGlycol synthesis
The invention relates to the technical field of water treatment, in particular to a spinel type ZnFeMnO4 nano material and a preparation method and application thereof. The preparation method of the spinel type ZnFeMnO4 nano material comprises the following steps: A) stirring and mixing zinc acetylacetonate, ferric acetylacetonate, manganese acetylacetonate and an ethylene glycol solution containing polyvinylpyrrolidone to obtain a mixed solution; B) enabling the mixed solution to make reaction at the temperature of 185-190 DEG C; and C) calcining a solid product after the reaction to obtain the spinel type ZnFeMnO4 nano material. In the spinel type ZnFeMnO4 nano material, the unique occupation mode of each element enhances the electron interaction between Fe / Mn, enhances the conductivity of the material and the binding capacity of the material and peroxymonosulfate (PMS), and obviously improves the catalytic activity and selectivity, thereby effectively degrading organic pollutants in water.
Owner:UNIV OF SCI & TECH OF CHINA
A preparation method of flexible carbon fiber with superamphiphobic properties
ActiveCN107237128BSuperamphiphobicShape adjustableCarbon fibresArtifical filament manufactureCarbon fibersN dimethylformamide
The invention discloses a method for preparing flexible carbon fibers with super-amphiphobic properties, belonging to the technical field of super-amphiphobic material production. Polyacrylonitrile and manganese acetylacetonate are dissolved in N,N‒dimethylformamide to form a uniform electrospinning solution, and nano-spun fibers are prepared by electrospinning technology; the nano-spun fibers are first pre-treated After oxidation, it is then placed in a nitrogen atmosphere for high-temperature carbonization treatment to obtain manganese-doped carbon nanofibers; soaking the manganese-doped carbon nanofibers in ethanol solution of POTS to obtain super-amphiphobic flexible carbon materials. The process of the invention is simple, the shape of the spinning fiber can be adjusted, and the invention is green and environment-friendly. The average size of the spun carbon fibers is 300-450 nm, and the prepared carbon fibers with superamphiphobic properties exhibit a contact angle of about 155° and a rolling angle of about 4° at different pHs. The contact angle to different oils is about 152°.
Owner:YANGZHOU UNIV
Acetylacetone manganese-initiated RAFT (reversible addition fragmentation chain transfer) polymerization method
The invention discloses an acetylacetone manganese-initiated RAFT (reversible addition fragmentation chain transfer) polymerization method which comprises the following steps of: preparing a bulk polymerization reaction system comprising a vinyl monomer, an initiator and a chain transfer agent or a solution polymerization reaction system comprising a vinyl monomer, an initiator, a chain transfer agent and a solvent; and performing a polymerization reaction at 25-100 DEG C to obtain a polymer, wherein the molar ratio of the vinyl monomer to the initiator to the chain transfer agent is 200:(0.2-4):(0.5-2), the molar ratio of the vinyl monomer to the solvent is (0.5-3):1, and the initiator is acetylacetone manganese. The method disclosed by the invention adopts acetylacetone manganese as an RAFT polymerization initiator for the first time, is suitable for a wide range of monomers, and is effective to methacrylates, vinyl acetates and styrene monomers; the temperature application range is wider, and the application universality is enhanced; and as an initiator, the acetylacetone manganese can realize a higher end group functional degree of the tail end of the polymer.
Owner:ZHEJIANG KELI NEW MATERIAL TECH CO LTD
A kind of preparation method of micro-branched micro-crosslinked polyacrylamide
ActiveCN107365402BImprove thermal stabilityImprove shear resistanceDrilling compositionPolymer scienceHydrolysis
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of biodegradable plastic and preparation method thereof
InactiveCN103483624BGuaranteed water resistanceImprove water resistanceLow-density polyethylenePolymer science
The invention relates to a biodegradable plastic and a preparation method thereof, belonging to the technical field of plastic processing, wherein the parts by weight of each component are 16-21 parts of chitin, 2-5 parts of sodium fluorosilicate, 2-5 parts of gelatin, 1~3 parts of calcium carbonate, 1~3 parts of glycerin, 18~22 parts of superfine starch, 1~3 parts of glycerin, 0.4~0.7 parts of stearic acid, 0.4~0.7 parts of oleic acid, 15 parts of low density polyethylene ~20 parts, 15~20 parts of high-density polyethylene, 0.4~0.7 parts of manganese acetylacetonate, the preparation method is to raise the temperature of the container to 75~85°C, put the above raw materials in the container in proportion High to 125~130°C, keep stirring at this temperature and react for 1.5~1.8h, adjust the pH of the reaction solution to 5.8~6.5 with hydrochloric acid to obtain a uniformly dispersed solution; pour the solution into a preheated mold for foaming, The biodegradable plastic is obtained by thermal treatment and demoulding; compared with the same type of products on the market, the plastic has the advantages of lower production price, faster degradation speed, non-toxic, and no pollution to the environment.
Owner:广州市永进塑料有限公司
Industrial tail gas low-temperature denitration method and system
PendingCN112691541AImprove thermal stabilitySimple preparation processGas treatmentMolecular sieve catalystsMolecular sievePtru catalyst
The invention relates to the technical field of tail gas treatment, and particularly relates to an industrial tail gas low-temperature denitration method and system. The method comprises the steps of fully dissolving manganese acetylacetonate in an acetone solution, and stirring at the room temperature to be fully mixed and dissolved; adding an SAPO-34 molecular sieve and acetone into the solution, and continuously stirring to obtain a mixed solution; putting the mixed solution into an ultrasonic reactor for ultrasonic treatment, and continuously stirring at room temperature until a dark yellow dry colloidal solid is formed; and drying the dry colloidal solid to obtain powder, and roasting the powder in a tubular furnace to obtain a low-temperature SCR flue gas denitration catalyst; and taking the low-temperature SCR flue gas denitration catalyst as a treatment link after desulfurization and dust removal of industrial tail gas to complete low-temperature denitration. The thermal stability is greatly improved, the low-temperature efficiency is greatly improved when NOX is catalytically removed, the preparation process of the SCR flue gas denitration catalyst is simple, surface active groups are complex, the NOX adsorption capacity is higher, and relatively high adsorption efficiency is achieved at a high airspeed.
Owner:THE SIXTH CONSTR CO LTD OF CHINA NAT CHEM ENG
Manganese composite valence crosslinking substance adsorption catalytic material as well as preparation method and application thereof
ActiveCN114308018AGuaranteed concentrationGuaranteed long-term useOther chemical processesDispersed particle separationGallic acid esterRaw material
The invention provides a manganese composite valence cross-linked substance adsorption catalytic material. The material is prepared from the following raw materials in parts by mass: 1-5 parts of manganese-doped carbon dots; 20 to 40 parts of activated carbon; 10 to 20 parts of aluminum oxide; 15 to 25 parts of manganese cross-linked montmorillonite powder; and 5-10 parts of sodium carbonate. According to the invention, a novel adsorption catalytic material is prepared from a manganese (III / IV) compound in a composite valence state and is used for treating industrial polluted waste gas. The preparation method comprises the following steps: firstly, forming a Mn (IV)-doped carbon dot nano material from gallic acid and manganese dioxide under a hydrothermal condition, then crosslinking montmorillonite with manganese (III) acetylacetonate to obtain an active manganese compound in a middle valence state, and finally, adding activated carbon, sodium carbonate and the like, and granulating and forming to prepare the adsorption catalytic material of a manganese composite valence state (III / IV) crosslinking substance. The raw materials are easy to obtain, the method is simple, operation is convenient, practicability is high, and the prepared adsorption catalytic materials in different shapes have wide application prospects.
Owner:瑞燃(上海)环境工程技术有限公司
A kind of MNY catalyst for indoor formaldehyde catalytic removal and preparation method thereof
InactiveCN107837819BThe enrichment effect is obviousIncrease chance of contactMolecular sieve catalystsDispersed particle separationMolecular sievePtru catalyst
The invention relates to catalysts, preparation methods and application fields, in particular to a MnY catalyst used for catalytic removal of formaldehyde in indoor air and a preparation method thereof. The catalyst is composed of a catalyst carrier NaY molecular sieve and an active component Mn, and the active component Mn uses manganese (II) acetylacetonate as a manganese source. The preparation method is as follows: immerse NaY molecular sieve in the acetone solution containing manganese (II) acetylacetonate, stir until the acetone solvent is completely volatilized to obtain the catalyst precursor; perform temperature program activation in the activation atmosphere, then cool to room temperature and take it out to obtain MnY catalyst. The MnY catalyst prepared by this method is used for the removal of formaldehyde in indoor air. Since the surface of the Y molecular sieve is dispersed with Mn oxide active centers that have a good catalytic effect on the oxidation and removal of formaldehyde, the formaldehyde adsorbed on the surface of the Y molecular sieve can be catalytically degraded into CO. 2 and H 2 O, and is not affected by the adsorption capacity. The method is simple, fast, and environmentally friendly, and shows good catalytic performance in indoor catalytic removal of formaldehyde.
Owner:YUNCHENG UNIVERISTY
Method for preparing cosmetic spice intermediate from nano functional materials by selective epoxidation
InactiveCN108371957AReduce dosageHigh selectivityOrganic chemistryOrganic-compounds/hydrides/coordination-complexes catalystsEpoxyDouble bond
The invention belongs to the technical field of nano functional materials and specifically relates to a method for preparing a cosmetic spice intermediate from nano functional materials by selective epoxidation. According to the method disclosed by the invention, manganese acetyl acetonate (II) is utilized as a manganese source, cucurbituril is utilized as organic ligand, and a manganese / cucurbituril coordination compound is deposited on the surfaces of ferric oxide magnetic nanaparticles to form an even catalyst layer to obtain a nano functional catalytic material. The nano functional catalytic material prepared by the method disclosed by the invention can catalyze pseudoionone to selectively perform epoxidation reaction on 9,10-site double bonds to generate 9,10-epoxy-6,10-dimethylundecyl-3,5-diene-2-one. The method disclosed by the invention has the advantages of environment-friendly catalytic system, high atom economy, high target product yield and ability in catalyzing triazole alkene to prepare bactericide epoxiconazole by epoxidation.
Owner:深圳伊赞泉生物科技有限公司
A kind of preparation method of yttrium manganate nano material
InactiveCN106430319BHigh purityThe preparation process route is simpleMaterial nanotechnologyMetal/metal-oxides/metal-hydroxide catalystsDispersityMetallic materials
The invention belongs to the field of preparation of inorganic non-metallic materials and relates to a method for preparing yttrium manganate nanomaterials, which involves fully dissolving yttrium acetylacetonate and manganese acetylacetonate in a methanol solution, performing a solvothermal reaction, filtering and washing, and then After drying, calcination and cooling, the yttrium manganate nanomaterial is obtained. The process of the invention is simple and easy, the product purity is high, and the preparation cost is low, and the size of the obtained yttrium manganate nanomaterial is 20 to 30 nm. Moreover, the product has good uniformity and dispersion, the production process is simple, the sintering temperature is low, and it is easy to be applied to actual large-scale production. The yttrium manganate nanomaterial prepared by the invention has high catalytic activity as a photocatalytic material, and has broad application prospects in the fields of degrading dye wastewater and indoor harmful gases, photocatalytic disinfection and other fields.
Owner:BOHAI UNIV
Preparation method of graphene/lamno3 composite material for supercapacitor
ActiveCN106409524BEasy to prepareReduce manufacturing costHybrid capacitor electrodesHybrid/EDL manufactureCapacitanceRotary evaporator
The invention provides a preparation method of graphene / LaMnO3 composite material for a supercapcitor. The preparation method includes the following steps: 1. ultrasonically dispersing graphene oxide in absolute ethyl alcohol to obtain a solution A; 2. dissolving lanthanum acetylacetonate and manganese acetylacetonate in propionic acid to obtain a solution B; 3. uniformly mixing the solution A with the solution B, and then adding a mixed solution to a rotary evaporator for rotary evaporation treatment to obtain a precursor C in a gel state; and 4. Performing high-temperature thermal treatment on the precursor C under the protection of reducing gas to obtain the graphene / LaMnO3 composite material for the supercapacitor. The preparation technology is simple, the cost is low, and the prepared graphene / LaMnO3 composite material has relatively high specific capacitance and relatively good cycle stability, and is suitable for large-scale production.
Owner:NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Preparation method and application of manganese oxide hollow fibers
InactiveCN111099660AEasy to prepareEase of mass productionManganese oxides/hydroxidesFiberPhysical chemistry
This preparation method of the manganese oxide hollow fiber is characterized by sequentially comprising the following steps: 1, weighing a proper amount of manganese acetylacetonate, and dispersing manganese acetylacetonate in glycerol to obtain a uniform black solution; 2, adding a proper amount of Te nanowires into the black solution obtained in the step 1, continuously stirring uniformly, and transferring the mixture into heating reaction equipment; 3, heating the mixed solution obtained in the step 2 to 210 DEG C in heating reaction equipment at a heating rate of 3 DEG C / min, then stoppingheating, carrying out heat preservation for 30 minutes at the temperature, and setting the stirring speed of magnetons to be 50-80 rpm; and 4, washing the reaction product obtained in the step 3 witha mixed solution of deionized water and ethanol for three times, dispersing into a 2M NaOH solution, and transferring into a hydrothermal reaction kettle to remove the template agent, thereby obtaining the final product manganese oxide hollow fiber.
Owner:王子韩
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