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71 results about "Cobalt(II) acetate" patented technology
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Cobalt(II) acetate is the cobalt salt of acetic acid. It is commonly found as the tetrahydrate Co(CH₃CO₂)₂·4 H₂O, abbreviated Co(OAc)₂·4 H₂O. It is used as a catalyst.
Method for producing anode active material containing lithium, magnesium compound oxide
InactiveCN1741302AStructural Precise TailoringSimple structureElectrode manufacturing processesLithium compoundsMANGANESE ACETATENickel salt
A method for preparing positive electrode multielement active material containing lithium / manganese composite oxide includes directly using lithium hydroxide coprecipitation to prepare M ( OH )2 , mixing it with lithium salt in grinding , forming plate by pressing , prebaking , cooled ball grinding , forming plate by pressing and backing . In the method , applied nickel salt is nickel acetate or nickel nitrate , applied cobalt salt is cobalt acetate or cobalt nitrate, applied manganese salt is manganese nitrate or manganese acetate and applied lithium salt is lithium carbonate or lithium acetate .
Owner:HEBEI UNIV OF TECH
Preparation method of cobalt-manganese composite oxide nanoparticles and cobalt-manganese composite oxide nanoparticles prepared by adopting same
InactiveCN102437324AShape is easy to controlOptimal Control StructureMaterial nanotechnologyCell electrodesManganeseLithium-ion battery
The invention provides a preparation method of cobalt-manganese composite oxide nanoparticles and the application of the cobalt-manganese composite oxide nanoparticles prepared by adopting the method in a lithium ion battery. The corresponding method comprises the steps that a predetermined amount of manganese acetate and polyvinylpyrrolidone are dissolved in water and an ethanol solution, and a manganese acetate and polyvinylpyrrolidone solution is obtained; under a predetermined temperature condition, a cobalt potassium cyanate solution is dropwise added into the manganese acetate and polyvinylpyrrolidone solution, is magnetically stirred and then stands still for predetermined time, and cobalt cyanic acid radical complex nanoparticles are obtained through centrifugal separation; and the dried cobalt cyanic acid radical complex nanoparticles are calcined in air for predetermined time at a calcination temperature of 400 DEG C, and the cobalt-manganese composite oxide nanoparticles are obtained after the calcination. According to the preparation method, higher temperature and longer reaction time are not needed, the shapes and the structures of the particles are easy to control, the manufacturing process is relatively simple, the requirement for equipment is not high, and large-scale popularization and application can be realized.
Owner:UNIV OF SCI & TECH OF CHINA
G-C3N4 supported cobalt oxide catalyst and preparation method thereof
ActiveCN105233851ALarge specific surface areaHigh and low temperature oxidation activityPhysical/chemical process catalystsDispersed particle separationPtru catalystPolytetrafluoroethylene
The invention relates to a g-C3N4 supported cobalt oxide catalyst and a preparation method thereof. The preparation method comprises the following steps: preparing an aqueous solution of cobalt acetate and an aqueous solution of g-C3N4, mixing, and magnetically stirring to obtain a mixed solution A; adding ammonia water to the mixed solution A in a dropwise manner, and magnetically stirring to obtain a mixed solution B; adding the mixed solution B to an autoclave provided with a polytetrafluoroethylene liner, and carrying out a hydrothermal reaction at 130-160DEG C for 8-12h to obtain a mixture; and centrifuging the mixture, removing the obtained supernatant, washing the obtained residual solid substance, transferring the solid substance to an oven, and drying at 60DEG C for 8h to prepare the g-C3N4 supported cobalt oxide catalyst. The prepared catalyst can be used in catalysis of carbon monoxide low temperature oxidation, and can maintain complete conversion of carbon monoxide into carbon dioxide at 122DEG C for at least 2400min.
Owner:HENAN POLYTECHNIC UNIV
Graphene loaded cobaltous oxide catalyst and preparation method thereof
InactiveCN105268440AExcellent low temperature oxidation performanceEasy to operateMetal/metal-oxides/metal-hydroxide catalystsPtru catalystEngineering
The invention relates to a graphene loaded cobaltous oxide catalyst and a preparation method thereof. The preparation method comprises the steps that a cobaltous acetate aqueous solution and a graphene oxide aqueous solution are prepared firstly, after mixing is conducted, magnetic stirring is conducted, and a mixed solution A is obtained; ammonia water is dropwise added into the mixed solution A, magnetic stirring is conducted, and a mixed solution B is obtained; the mixed solution B is filled into a high-pressure reaction kettle with a polytetrafluoroethylene lining, a hydrothermal reaction is conducted for 10-14 h at 160-190 DEG C, and a mixture is obtained; after speed centrifugal separation is conducted on the obtained mixture, supernatant liquor is removed, residual solid matter is transferred to a drying oven after being washed, drying is conducted for 8 h at 60 DEG C, and the graphene loaded cobaltous oxide catalyst is prepared. The prepared catalyst can be applied to catalyzing of carbon monoxide low-temperature oxidation, the carbon monoxide can be completely oxidized into carbon dioxide at 100 DEG C, and the carbon monoxide can be completely converted into the carbon dioxide for at least 3000 min at 100 DEG C.
Owner:HENAN POLYTECHNIC UNIV
Monatomic cobalt-loaded tubular carbon nitride catalyst as well as preparation method and application thereof
ActiveCN114534759AEasy to prepareFacilitate the realization of oxygen dopingWater contaminantsEnergy based wastewater treatmentCobalt acetatePtru catalyst
The invention discloses a monatomic cobalt-loaded tubular carbon nitride catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: mixing melamine and / or dicyandiamide with water to prepare a mixed solution; carrying out hydrothermal reaction on the mixed solution to obtain a supramolecular precursor; and mixing the supramolecular precursor with an ethanol solution of cobalt acetate to prepare a cobalt acetate-loaded supramolecular precursor, and calcining to obtain the monatomic cobalt-loaded tubular carbon nitride catalyst. The atomic cobalt-loaded tubular carbon nitride catalyst prepared by the method has the advantages of high specific surface area, multiple reaction active sites, good catalytic performance, high metal atom utilization rate and the like, can be widely used for activating persulfate to degrade organic pollutants, has a good degradation effect, and has good application value and application prospect; meanwhile, the preparation method disclosed by the invention also has the advantages of simple process, convenience in operation, easiness in obtaining raw materials, low cost and easiness in realizing industrial production, and has a relatively great application prospect in the field of environmental catalysis.
Owner:HUNAN UNIV
Oxidation reduction method of cobalt-manganese composite oxide applied to low-concentration propane combustion reaction, product of oxidation reduction method and application of product
ActiveCN107597138AProcess stabilityImprove performanceIncinerator apparatusMetal/metal-oxides/metal-hydroxide catalystsFiltrationCatalytic effect
The invention discloses an oxidation reduction method of cobalt-manganese composite oxide applied to low-concentration propane combustion reaction, a product of the oxidation reduction method and application of the product. The method comprises the steps of continuing adding a 0.6mol / L formic acid solution into a potassium permanganate solution and a cobalt acetate solution at 50-80 DEG C under mixing and stirring conditions, continuing to stir for a period of time, and carrying out suction filtration, washing, drying and roasting, so as to obtain cobalt-manganese oxide. The obtained oxide isapplied to propane catalytic combustion reaction, the initiation temperature is 110 DEG C, and the oxide presents very good activity. According to the oxidation reduction method, by adding reducing agents with different strengths into a strong oxidant, namely the potassium permanganate solution in batches, potassium permanganate is gradually reduced, and the oxide is gradually formed, so that forming of different crustal surfaces is conveniently adjusted and controlled, the required oxide surface is exposed, and the catalysis to different reactions is realized. The method has the advantages ofnovel thought, controllability, adjustability and simple preparation process and is applicable to the preparation process of manganese-base composite oxide.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH
Method for producing pentalyn
InactiveCN105778765AHigh softening pointHigh purityNatural resin chemical modificationAnthraquinonesPentaerythritol
The invention discloses a method for producing pentalyn, and belongs to the technical field of rosin deep processing.The pentalyn is prepared from, by weight, 100 parts of rosin, 0.0001-0.0002 part of anthraquinone, 5-8 parts of hydroquinone, 0.001-0.002 part of 4,4'-sulfo-bis(6-tert-butyl-3-methylphenol), 15-25 parts of pentaerythritol and 0.01-0.02 part of cobaltous acetate.The method comprises the steps that firstly, rosin is refined, the hydroquinone, the pentaerythritol and the cobaltous acetate are added, temperature is increased to 300-350 DEG C under vacuum pressure, constant-temperature stirring is performed, and the reaction is performed for 2-4 h; the anthraquinone and the 4,4'-sulfo-bis(6-tert-butyl-3-methylphenol) are added, then, temperature is increased to 200-220 DEG C under the vacuum pressure for distillation.The obtained pentalyn has the advantages of being high in softening point and purity.
Owner:FINJET CHEM IND LTD
Preparation method of nitrogen-doped water electrolysis oxygen production heterogeneous catalyst
ActiveCN111330622AStable structureHigh-efficiency electrolysis of water and oxygen production catalystPhysical/chemical process catalystsElectrodesPtru catalystThiourea
The invention discloses a preparation method of a nitrogen-doped water electrolysis oxygen production heterogeneous catalyst. The method comprises the following steps: dissolving cobalt acetate, thiourea and ammonium fluoride into a mixed solvent consisting of deionized water and ethylene glycol to obtain a precursor solution, transferring the precursor solution into a hydrothermal kettle, addingfoamed nickel, carrying out a solvothermal one-pot reaction, carrying out heating twice, carrying out in-situ co-growth on the foamed nickel to obtain a Co4S3 / Ni3S2 nanosheet composite material with aheterostructure, and carrying out high-temperature nitridation treatment on the foamed nickel-based composite material after the solvothermal reaction is finished to finally obtain the foamed nickel-based nitrogen-doped water electrolysis oxygen production heterogeneous catalyst. The nanosheet composite material growing on foamed nickel in situ is used as a water electrolysis oxygen production catalyst, has a lower cost than a noble metal and metal oxide water electrolysis oxygen production catalyst, and has better intrinsic catalytic activity than a single-component transition metal sulfidenanosheet catalyst.
Owner:UNIV OF SCI & TECH BEIJING
Core-Shell Type Cobalt Oxide Microparticle or Dispersion Containing the Microparticle, and Production Process and Use of the Microparticle or the Dispersion
InactiveUS20110003156A1Simple processGood dispersionMaterial nanotechnologyPigmenting treatmentCobalt acetateOrganic solvent
The objects of the present invention are to provide core-shell type cobalt oxide microparticles, a dispersion containing such microparticles, and a production process and uses of the microparticles and the dispersion, and the invention is directed at: core-shell type cobalt oxide microparticles having an average particle diameter of from 50 to 200 nm, wherein the core is a secondary particle of spherical shape to a surface of which an organic polymer is attached as the shell; a dispersion of such cobalt oxide microparticles; a dry powder obtained from such a cobalt oxide microparticle dispersion; a process for producing core-shell type cobalt oxide microparticles or a dispersion thereof, which process includes the steps of: mixing together a cobalt salt and an organic polymer in an organic solvent so as to obtain a mixture; and heating / refluxing the mixture at a predetermined temperature so as to cause core-shell type cobalt oxide microparticles to precipitate, wherein the cobalt salt is cobalt acetate; and uses of the cobalt oxide microparticles, the dispersion and the dry powder.
Owner:NAT INST OF ADVANCED IND SCI & TECH
A preparation method of Co/N/C catalyst for hydrogen precipitation reaction
InactiveCN109103465AImprove electrocatalytic performanceUniform nanowire structureCell electrodesN dimethylformamideNanowire
The invention belongs to the technical field of fuel cell catalyst preparation, and discloses a preparation method of Co / N / C catalyst for hydrogen precipitation reaction. Cobalt acetate tetrahydrate and polyacrylonitrile are dissolved in an N, N-dimethylformamide solvent and carbon nanowires containing cobalt acetate are prepared by electrospinning, and then the catalyst is prepared by a muffle furnace and a tube furnace through program-controlled temperature rise. The catalyst prepared by the invention has good morphology, uniform nanowire diameter and high purity, and has good catalysis in HER chemical reaction.
Owner:JIANGSU UNIV
NiCo/C@CNT double-conductive network hierarchical structure material, and preparation method and application thereof
ActiveCN110669474AEasy to operateLow reaction temperatureOther chemical processesMagnetic/electric field screeningCobalt acetatePhysical chemistry
The invention provides a NiCo / C@CNT double-conductive network hierarchical structure material, and a preparation method and an application thereof. Nickel acetate tetrahydrate and cobalt acetate tetrahydrate which are used as metal sources and 2,5-dihydroxyterephthalic acid which is used as an organic ligand undergo a refluxing reaction at 80-110 DEG C for a period of time in ultrapure water usedas a reaction solvent to obtain orange-yellow precipitate, and the obtained product is centrifuged, washed and dried, and finally is calcined at 500-800 DEG C in an inert atmosphere for 1-4 h to obtain the NiCo / C@CNT double-conductive network wave-absorbing material. The hierarchical structure is formed after carbon nanotubes are generated in situ, so that the NiCo / C@CNT double-conductive networkhierarchical structure material has an excellent electromagnetic wave-absorbing performance as a wave-absorbing material.
Owner:SHAANXI UNIV OF SCI & TECH
Method for synthesizing floriform cobalt magnetic powder by mixed solvent thermal method
InactiveCN102363219AHigh crystallinityImprove coercive forceInorganic material magnetismDispersityHydrazine compound
The invention provides a method for preparing floriform cobalt magnetic powder by using deionized water, glycol and hydrazine hydrate as solvents and cobaltous acetate as a raw material. The method comprises the following simple steps of: dispersing 1.25 grams of cobaltous acetate in 15 milliliters of a glycol solution, preparing 6.66 M of a sodium hydroxide solution, pouring the two solutions into polytetrafluoroethylene, mixing fully, and adding 5 milliliters of hydrazine hydrate, wherein a ratio of the deionized water to the glycol to the hydrazine hydrate is 3:3:1, and the filling amount is 4 / 5; arranging a cylinder sleeve by using a bushing, keeping the temperature of 180 DEG C for 4, 12, 24 and 36 hours; and cooling to the room temperature naturally, collecting a mother solution, cleaning precipitates repeatedly, separating by using a permanent magnet, collecting and drying to obtain the cobalt magnetic powder. The method has the advantages of simplicity, high dispersity, and crystallinity and the like, and can be widely applied to related industry of magnetic liquid, coatings, medicinal orientation, rechargeable batteries, catalysts and the like; and raw materials are low in cost, the process is simple, and large-scale industrial production is easy to realize.
Owner:XINJIANG UNIVERSITY
Method for preparing nano hydroxyl manganese cobalt oxide
ActiveCN106379948ALow costThe synthesis process is simpleMaterial nanotechnologyHybrid capacitor electrodesMANGANESE ACETATELithium-ion battery
The invention discloses a method for preparing nano hydroxyl manganese cobalt oxide. The method comprises the following steps: (1) adjusting the pH (Potential of Hydrogen) value of a mixed solution of manganese acetate and cobalt acetate to 2.5 to 6; (2) introducing oxidizing gas into the mixed solution of the step (1) and carrying out an oxidization reaction; after the reaction, centrifuging, washing and drying to obtain the nano hydroxyl manganese cobalt oxide. By adopting the preparation method provided by the invention, the nano hydroxyl manganese cobalt oxide can be processed through one step; the nano hydroxyl manganese cobalt oxide can be applied to related fields of super-capacitors, lithium-ion batteries and the like. The preparation method provided by the invention has the advantages that raw materials are cheap and easy to obtain, the cost is low and a synthesis process is simple and easy to realize; the quality of a product is stable and the process repeatability is good; the reaction can be finished within relatively short time and the efficiency is high.
Owner:CENT SOUTH UNIV
Preparation of cobalt-based metal organic framework material and low-carbon hydrocarbon separation application of cobalt-based metal organic framework material
ActiveCN113214493AImprove thermal stabilityImprove adsorption capacityProductsReagentsMetal-organic frameworkPyrazolylchalcone
The invention discloses preparation of a cobalt-based metal organic framework material and a low-carbon hydrocarbon separation application of the cobalt-based metal organic framework material, and belongs to the technical field of crystalline porous material preparation and gas separation. The MOF material is synthesized from an organic ligand 5,5'-bis(1H-pyrazol-4-yl)-2,2'-dipyridyl (DPBP) and cobalt acetate (Co(CH3COO)2) under a solvothermal condition. Co-DPBP has a regular pore channel structure and relatively high porosity and specific surface area. The size of a pore channel is slightly larger than the molecular dynamic diameter of propyne / propylene, and the pore channel contains abundant bare metal sites and hydrogen bond action sites. The acting force between the Co-DPBP skeleton and propyne molecules is stronger, so that the effect of preferentially adsorbing the propyne in the propyne-propylene mixed gas is realized, and the propylene component in the mixed gas is purified.
Owner:BEIJING UNIV OF TECH
Method to make single-layer pet bottles with high barrier and improved clarity
Owner:TREVIRA HLDG GMBH
Preparation method of manganese cobalt oxide with porous spherical hollow structure and application thereof
ActiveCN110400937AHigh crystallinityUniform shapeFuel and primary cellsCell electrodesMANGANESE ACETATECobalt acetate
The invention relates to a preparation method of manganese cobalt oxide with a porous spherical hollow structure and an application thereof. The method is characterized in that manganese acetate and cobalt acetate are used as a manganese source and a cobalt source, ethylene glycol and methanol are used as organic solvents, the porous spherical hollow structure manganese cobalt oxide material having a uniform size is prepared in one step by an organic solvent combustion method, and Mn3O4 with a porous spherical core-shell structure, CoMn2O4 with a porous spherical shell structure, MnCo2O4 witha porous spherical hollow structure and Co3O4 with a uniform solid spherical structure are obtained by adjusting the ratio of manganese to cobalt. The method is advantaged in that the porous materialmanganese cobalt oxide has good catalytic performance for ORR OER, and the method has the characteristics of simple operation, low process cost and regular shape rules and has important significance for large-scale industrial production and practical application of the manganese cobalt oxide with the porous spherical structure.
Owner:NANKAI UNIV
Preparation method of ionic hypercrosslinked porous organic polymer supported cobalt catalyst
PendingCN114669332ASimple preparation processEfficient conversionOrganic chemistryOrganic-compounds/hydrides/coordination-complexes catalystsXylyleneAluminium chloride
The invention belongs to the technical field of porous organic catalyst preparation, and discloses a preparation method of a hypercrosslinked porous organic polymer supported cobalt catalyst, which comprises the following steps: dissolving tetraphenylporphyrin, dibromo-p-xylene and N-methylimidazole in a 1, 2-dichloroethane solvent in a nitrogen protection state to obtain a mixed solution A; adding aluminum chloride into the mixed solution A, and then sequentially stirring in an oil bath, quenching, washing, purifying and drying to obtain an intermediate product B; dissolving cobalt acetate in deionized water to obtain a solution C; adding an acetonitrile solution containing the intermediate product B into the solution C, stirring at room temperature, centrifugally separating, washing and drying to obtain a target product D; the formed polymer can catalyze CO2 and epoxide to generate cyclic carbonate, the CO2 adsorption capacity is greatly improved, and CO2 is efficiently converted in a normal-pressure environment.
Owner:QIQIHAR UNIVERSITY
Preparation method of 2,6-diaminopyridine condensed 4-carboxybenzaldehyde bis-schiff base cobalt complex
ActiveCN107501338ASimple processGood repeatabilityCobalt organic compoundsSolventCoordination complex
The invention discloses a preparation method of a 2,6-diaminopyridine condensed 4-carboxybenzaldehyde bis-schiff base cobalt complex. The preparation method takes 2,6-diaminopyridine and 4-carboxybenzaldehyde as raw materials and absolute ethyl alcohol as a solvent to prepare 2,6-diaminopyridine condensed 4-carboxybenzaldehyde bis-schiff base, without the need of adding a catalyst; the 2,6-diaminopyridine condensed 4-carboxybenzaldehyde bis-schiff base is used as a ligand to react with cobalt acetate in an alkaline water solution, so as to prepare the 2,6-diaminopyridine condensed 4-carboxybenzaldehyde bis-schiff base cobalt complex. According to the method disclosed by the invention, the catalyst does not need to be added; the method has the advantages of simple technology, good repeatability and high yield and is convenient for popularization and application.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Preparation method and application of magnesium cobaltate spinel catalyst
InactiveCN108906063AEasy to prepareLow priceWater contaminantsMetal/metal-oxides/metal-hydroxide catalystsBisphenolBisphenol A
The invention discloses a preparation method and application of a magnesium cobaltate spinel catalyst, relates to the field of water treatment and aims at solving the technical problems of low bisphenol-A degradation speed and degradation incompletion existing in existing water treatment. The preparation method comprises the steps: adding triethylene glycol and urea into magnesium acetate and cobaltous acetate serving as raw materials, carrying out a reaction, then, carrying out a hydrothermal method, drying and firing to prepare spinel. The catalyst is simple in preparation method, low in rawmaterial price, good in peroxy-monosulfate catalysis effect, stable in performance and capable of only dissolving out 5-10 mugL<-1> metal ions and completely degrading bisphenol A within 5 min. The magnesium cobaltate spinel catalyst prepared by using the preparation method is used for catalyzing peroxy-monosulfate to remove organic pollutants.
Owner:HARBIN INST OF TECH
Preparation method of electrocatalyst for oxygen evolution reaction
InactiveCN109546169AIncrease the active siteHigh catalytic activityCell electrodesCobalt acetateOver potential
The invention discloses a preparation method of an electrocatalyst for oxygen evolution reaction, which comprises the following steps: (1) ventilating and drying 200-250g of goat blood at 80-95 DEG Cfor 5-7h, and grinding and crushing the dried goat blood; (2) carbonizing the powder obtained in step (1) to obtain a precursor; (3) mixing the precursor obtained in step (2) with 28-32ml of cobalt acetate solution or nickel acetate solution, and carrying out hydrothermal reaction for 2-3h; and (4) washing the product obtained in step (3) with de-ionized water and drying the product to obtain an electrocatalyst. The raw materials come from a variety of sources, are easily available, and cost low. The preparation process is simple. The preparation method can be used in large-scale production. The finished product has good catalytic performance. A catalyst with oxygen evolution reaction over-potential of 400-420 mV and TAFEL slope of 83-110mV / dec can be obtained. The performance is greatly improved compared with the existing common Pt / C catalyst.
Owner:ZHEJIANG UNIV
Preparation method and application of zeolite imidazate framework material ANA-[Co (eIm) 2]
ActiveCN111617743ALow costSimple methodIon-exchange process apparatusOther chemical processesEthyl groupSolvent
The invention discloses a preparation method and application of a zeolite imidazate framework material ANA-[Co (eIm) 2]. The preparation method comprises the following steps: sequentially mixing cobalt acetate tetrahydrate, 2-ethylimidazole and solvent ethanol according to a molar ratio of divalent metal Co salt to 2-ethylimidazole to ethanol of 1: (6-12): (120-270) at room temperature, and reacting at 120-150 DEG C for 1-2 days; and after the reaction is finished, cooling, washing the obtained sample with ethanol for multiple times, filtering at room temperature, and drying to obtain the product ANA-[Co (eIm) 2]. The invention also provides application of the zeolite imidazate framework material ANA-[Co (eIm) 2] in adsorption separation of a mixed aqueous solution of low-concentrating furfural and 5-hydroxymethylfurfural.
![Preparation method and application of zeolite imidazate framework material ANA-[Co (eIm) 2]](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/f7c6c9a4-2f88-4534-beea-1d0389511008/200608124737.png "Preparation method and application of zeolite imidazate framework material ANA-[Co (eIm) 2]")
![Preparation method and application of zeolite imidazate framework material ANA-[Co (eIm) 2]](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/f7c6c9a4-2f88-4534-beea-1d0389511008/200608124742.png "Preparation method and application of zeolite imidazate framework material ANA-[Co (eIm) 2]")
![Preparation method and application of zeolite imidazate framework material ANA-[Co (eIm) 2]](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/f7c6c9a4-2f88-4534-beea-1d0389511008/200608124746.png "Preparation method and application of zeolite imidazate framework material ANA-[Co (eIm) 2]")
Owner:TAIYUAN UNIV OF TECH
Arachnoid cobalt sulfide powder and preparation method thereof
ActiveCN110776017ALarge specific surface areaImprove performanceCobalt sulfidesThio-Solvothermal reaction
The invention relates to an arachnoid cobalt sulfide powder and a preparation method thereof. The method comprises the following steps: 1, carrying out a solvothermal reaction on cobalt acetate and thioacetamide at 150-170 DEG C to obtain a reaction solution A; and 2, washing and drying a product in the reaction solution A to obtain the arachnoid cobalt sulfide powder. The final product is directly synthesized from the cobalt acetate and thioacetamide by adopting the one-step solvothermal reaction, the particle size of the product is in the nanoscale, the product has a large specific surface area, and the formed pores provide a buffer area for volume expansion generated in the charging / discharging process, so the material has a stable stability, and has excellent performances when used asa potassium ion battery negative electrode material; and the preparation method has the advantages of low synthesis temperature, simple synthesis path, no large instruments or harsh reaction conditions, and suitableness for large-scale production.
Owner:SHAANXI UNIV OF SCI & TECH
Preparation method of 2,6-diaminopyridine condensed 3-carboxybenzaldehyde bis-schiff base cobalt complex
ActiveCN107513078ASimple processGood repeatabilityCobalt organic compoundsAlkaline waterCobalt acetate
The invention discloses a preparation method of a 2,6-diaminopyridine condensed 3-carboxybenzaldehyde bis-schiff base cobalt complex. The preparation method takes 2,6-diaminopyridine and 3-carboxybenzaldehyde as raw materials and absolute ethyl alcohol as a solvent to prepare 2,6-diaminopyridine condensed 3-carboxybenzaldehyde bis-schiff base, without the need of adding a catalyst; the 2,6-diaminopyridine condensed 3-carboxybenzaldehyde bis-schiff base is used as a ligand and reacts with cobalt acetate in an alkaline water solution to prepare the 2,6-diaminopyridine condensed 3-carboxybenzaldehyde bis-schiff base cobalt complex. According to the method disclosed by the invention, the catalyst does not need to be added; the method has the advantages of simple technology, good repeatability and high yield and is convenient for popularization and application.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Preparation method of manganese-containing electrode material
PendingCN112374543AImprove stabilityImprove electronic conductivitySecondary cellsPositive electrodesMANGANESE ACETATEElectrolytic agent
A preparation method of a manganese-containing electrode material is characterized by comprising the following steps of: dissolving 6mmol of EDTA-2Na and 5.25 mmol of manganese acetate in a mixed solution of water and ethanol, stirring and dissolving; adding 20 mmol of KF into the solution obtained in the previous step; dissolving cobalt acetate into water, and dropwise adding the solution into the coexisting liquid under continuous stirring; dividing the coexisting liquid into three parts, continuing to react at 30 DEG C, 40 DEG C and 50 DEG C respectively, carrying out centrifugal separationto obtain solid products, and marking the solid products as K (Mn<0.95>Co<0.05>) F<3>-30, K (Mn<0.95>Co<0.05>) F<3>-40 and K (Mn<0.95>Co<0.05>) F<3>-50 respectively; and washing the solid products with ethanol and distilled water for multiple times, collecting and drying the solid products at 60 DEG C for later use. The method can effectively inhibit the dissolution of manganese in the electrolyte, and can effectively improve the cycle performance of manganese.
Owner:XUZHOU UNIV OF TECH
Hydrosilylation reaction catalyst
ActiveUS10005797B2Easy to handleImprove responseSilicon organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsCyanide compoundPtru catalyst
A hydrosilylation reaction catalyst prepared from: a catalyst precursor comprising a transition metal compound, excluding platinum, belonging to group 8-10 of the periodic table, e.g., iron acetate, cobalt acetate, nickel acetate, etc.; and a ligand comprising an isocyanide compound such as t-butyl isocyanide. The hydrosilylation reaction catalyst has excellent handling and storage properties. As a result of using this catalyst, a hydrosilylation reaction can be promoted under gentle conditions.
Owner:KYUSHU UNIV +1
Stable aqueous solutions comprising titanium and zinc and process therewith
InactiveUS6855797B2Long storage timeOrganic-compounds/hydrides/coordination-complexes catalystsCatalytic reactionsOrganic acidCobalt acetate
A process that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium α-hydroxycarboxylic acid or its salt, (b) a C1-C6 carboxylic acid, and (c) zinc in the form of a water-soluble zinc salt, and (d) water. Also disclosed is an esterification, transesterification or polycondensation process, which comprises contacting, in the presence of the solution process, an organic acid or its ester or its salt with an alcohol, optionally in the presence of a phosphorus compound, an organic or inorganic toning agent such as cobalt acetate, or combinations thereof. The process can also comprise combining aqueous solutions of a titanium α-hydroxycarboxylic acid or its salt and a zinc salt in an alcohol to produce an alcohol solution contacting the alcohol solution with a mixture comprising organic acid or its ester or its salt and a second alcohol, or comprise combining an aqueous solutions of a titanium α-hydroxycarboxylic acid or its salt and aqueous solution of a zinc salt with the mixture.
Owner:EI DU PONT DE NEMOURS & CO
Hydrosilylation reaction catalyst
PendingUS20180200703A1Easy to handleHigh activitySilicon organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsCyanide compoundPtru catalyst
A hydrosilylation reaction catalyst prepared from: a prescribed transition metal compound such as iron pivalate, cobalt pivalate, iron acetate, cobalt acetate, or nickel acetate; a ligand comprising t-butylisocyanide or another isocyanide compound; and a borane compound, Grignard reagent, alkoxysilane, or other prescribed promoter makes it possible to promote a hydrosilylation reaction under moderate conditions, and has exceptional handling properties and storage stability.
Owner:KYUSHU UNIV +1
A kind of preparation method of co@c@mof magnetic catalyst and its application
ActiveCN106902879BStatic hydrothermal crystallization method is simpleThe equipment is easy to operateOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsDispersityHydrofluoric acid
The invention discloses a preparation method and application of a Co@C@MOF magnetic catalyst. The preparation method includes the following steps: first mix cobalt acetate, hydrofluoric acid, terephthalic acid, and water, stir evenly, and then add them to a closed reaction kettle. , and then put the sealed reaction kettle into an oven for static hydrothermal crystallization. After the reaction is completed, it is quickly cooled to room temperature to obtain the reaction product liquid; then the reaction product liquid is taken and subjected to the first suction filtration treatment, and the filter cake is thermally washed. , and then after a second suction filtration treatment, the filter cake is washed and dried in sequence to obtain the Co-MOF metal-organic framework material; finally, the Co-MOF metal-organic framework material is placed in a vacuum muffle furnace for reduction treatment to obtain Co@C@MOF magnetic catalyst. The static hydrothermal crystallization mode is adopted to greatly shorten the synthesis time, greatly reduce energy consumption, and save production costs; and the obtained Co@C@MOF magnetic catalyst has uniform particles, good dispersion, and high catalytic activity.
Owner:HUBEI UNIV
Co-Mn-Cu compound oxygen reduction catalyst material for high voltage platform and preparation method thereof
InactiveCN106981666AReduce usageLow costFuel and secondary cellsCell electrodesWater bathsFiltration
The invention relates to a Co-Mn-Cu compound oxygen reduction catalyst material for high voltage platform and a preparation method thereof. The preparation method is characterized by specifically comprising the following steps of: firstly, dissolving potassium permanganate in deionized water to form a solution I; then dissolving cobaltous acetate in the deionized water and then preparing a mixed solution II by the cobaltous acetate solution and a manganous nitrate solution; then slowly adding the mixed solution II into the solution I in a stirring condition to form a mixed solution III; mixing a copper nitride solution with the mixed solution III to prepare a mixed solution IV; adjusting the pH value of the mixed solution IV to 10-12 and putting the mixed solution IV in a constant temperature water bath to stir; and performing suction filtration and washing for three times, drying and sintering. The material provided by the invention has the advantages of being simple in preparation process, low in cost of raw materials, easy to produce on a large scale, high in oxygen reduction catalytic activity, high in stability and long in service life and etc, and can better solve the problem that the application of a metal air battery is further limited in an existing material and system.
Owner:CHINA FIRST AUTOMOBILE
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