114 results about "Copper acetylacetonate" patented technology

The invention relates to a preparation method for a dendritic copper-palladium nanocrystalline alloy, which comprises the following steps: dissolving a palladium precursor, a copper precursor and a dispersant into a solvent, then adding a reducing agent, performing a reaction at 120-160 DEG C for 1-2 h, and performing centrifugal separation to obtain a dendritic copper-palladium nanocrystalline alloy, wherein the palladium precursor is palladium acetylacetonate, palladium acetate or palladium nitrate; and the copper precursor is copper acetylacetonate, copper chloride, copper nitrate or copper sulfate. The invention further relates to the dendritic copper-palladium nanocrystalline alloy. Dendritic nanocrystals with adjustable sizes and good dispersibility can be prepared according to the preparation method, and the preparation method is simple, has high repeatability and is low in cost.

The invention provides an fct-phase FePtCu ternary alloy nano particle catalyst and a synthesis method thereof. A polyalcohol reduction method is adopted, and metal precursors (including anhydrous FeCl2, platinum acetylacetonate and copper acetylacetonate), 1,2-hexadecanediol, oleic acid and oleylamine are heated to react in an organic solvent hexadecylamine, and are stirred in an N2 protection atmosphere; after heating and cooling, n-hexane and ethanol are added, and then the mixture is centrifuged and separated; supernatant is removed and sediment is dried to obtain a nano particle product; the structure, magnetism and catalytic activity of the nano particle product are determined; and the diameter of fct-phase FePtCu ternary alloy nano particles is 9-15 nanometers, the coercive force reaches 900Oe-4800Oe, an HER (Hydrogen Evolution Reaction) electro-catalytic property is characterized under the condition of 10mA/cm<2> and the over-potential eta=34-44mV Tafel slope b is equal to 23.6mV/dec-28.2mV/dec, and the ORR (Oxygen Reduction Reaction) electro-catalytic performance is excellent. The invention further synthesizes the fct-phase FePtCu ternary alloy nano particle catalyst with excellent performance. The fct-phase FePtCu ternary alloy nano particle catalyst does not need to be subjected to high-temperature annealing treatment, has the advantages of simplicity in preparation, low cost, high catalytic activity and good catalyst stability, and has very great application potential by being used as the HER and OOR electro-catalyst.

The invention discloses a two-dimensional CuCo2S4 nanosheet, a preparation method thereof and an application thereof as an electrocatalyst during the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). The preparation method comprises the steps of adding copper acetylacetonate, cobalt acetylacetonate and dodecylamine into a reactor, heating the obtained mixture at a certain rate to 100-130 DEG C for further reaction, adding lauryl mercaptan into the above reactor, heating at a certain rate to 220-260 DEG C for further reaction, cooling the obtained reaction product to the room temperature, centrifugalizing, washing and drying to obtain the two-dimensional CuCo2S4 nanosheet. The solid-liquid phase chemical reaction is conducted according to the preparation method, and the two-dimensional CuCo2S4 nanosheet is synthesized at the normal pressure and at a relatively low temperature. Therefore, the method is simple in process, short in reaction time and high in repeatability, and is suitable for mass production. Currently, the synthesis method and the morphology of the two-dimensional CuCo2S4 nanosheet, and the application of the above two-dimensional CuCo2S4 nanosheet as the electrocatalyst during the ORR and the OER are not reported. Therefore, the two-dimensional CuCo2S4 nanosheet has a wide application prospect in the fields of low-cost alkaline fuel cells.

The invention discloses a method for synthesizing a 3-hydroxy-3-arylindole-2-one derivative shown as a structural formula (I), which comprises the following steps of: fully reacting raw materials such as an isatin compound shown as a structural formula (II) and arylboric acid shown as a structural formula (III) in an inert organic solvent in the presence of a copper catalyst, a nitrogen-containing bidentate ligand and an alkaline compound, and separating and purifying reaction liquid after the reaction is finished to obtain the 3-hydroxy-3-arylindole-2-one derivative, wherein the copper catalyst is one or any combination of copper trifluoromethanesulfonate, copper acetylacetonate, copper acetate, cuprous iodide, copper bromide, copper fluoride and copper chloride. The method is high in implementation value and good in social benefit and economic benefit.

The invention discloses a linear Cu-Ni alloy nanocrystal and a synthesis method thereof. The nanocrystal is linear and has a face-centered cubic structure. According to the synthesis method, polyvinylpyrrolidone (PVP) is used as a coating agent, aniline is used as a reducing agent, and PVP, aniline, copper acetylacetonate and nickel acetylacetonate are dissolved in benzyl alcohol, and a solvothermal process is carried out so as to prepare the nanocrystal. Results show that nanoparticles can directionally form a linear nanostructure through addition of a proper amount of PVP and a small amountof aniline; certain special exposed crystal faces and a large amount of twinning dislocations exist and can provide more active sites for the nanocrystal; and when used as a catalyst, the nanocrystalcan effectively treat exhaust gas and realize degradation of organic matters in waste water. The success of the preparation method for the nanocrystal is of certain theoretical and practical significance to morphology-controllable synthesis of nanocrystals, controllable synthesis of transition-metal and double-metal nanocrystals and application of the catalysis performance of nanocrystals with special morphology.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a preparation method and application of a supported CuNi bimetallic Cu1Ni1/rGO catalyst. The preparation method of the catalyst comprises the following steps: (1) mixing copper acetylacetonate, nickel acetylacetonate, ferric trichloride, ascorbic acid and oleylamine; (2) adding graphene oxide into deionized water; (3) adding a graphene oxide aqueous solution obtained in step (2) into a material obtained in step (1), and uniformly mixing; (4) heating a material obtained in step (3) to react, stirring, cooling and standing; and (5) centrifuging a reaction solution obtained in step (4), and removing impurities to obtain the supported bimetallic catalyst. The catalyst disclosed by the invention ishigh in catalytic activity, stable in chemical structure and relatively good in conductivity; the raw materials are rich in source, and the catalyst preparation cost is reduced; and the cyclic utilization rate is high.

The invention relates to a carbon-supported octahedral platinum-copper-molybdenum ternary alloy catalyst for a fuel cell and a preparation method of the carbon-supported octahedral platinum-copper-molybdenum ternary alloy catalyst, and belongs to the technical field of electrochemistry. The preparation method comprises the steps of (1) respectively weighing platinum acetylacetonate, copper acetylacetonate, molybdenum carbonyl, ascorbic acid and hexadecyl trimethyl ammonium bromide to obtain a mixed solution; (2) adding N,N-dimethylformamide into the mixed solution obtained in the step (1) to obtain a suspension; (3) carrying out a reaction on the suspension at the temperature of 150-240 DEG C for 5-24 hours to obtain a reaction suspension; (4) sequentially carrying out centrifugal separation and washing treatment to obtain PtCuMo metal particles; (5) adding ethanol, and carrying out ultrasonic dispersion to obtain platinum-copper-molybdenum metal particle slurry; and (6) weighing carbon powder, adding the carbon powder into the container in the step (5), and carrying out ultrasonic dispersion, suction filtration and drying to obtain the carbon-supported octahedral platinum-copper-molybdenum ternary alloy catalyst. The method is simple in process and convenient to operate, the energy consumption is reduced, and the preparation method is green and clean. The prepared carbon-supported octahedral platinum-copper-molybdenum ternary alloy catalyst is uniform in nanoparticle size and has the advantages of being low in platinum loading capacity, high in catalytic activity, high inchemical stability and the like.

The invention belongs to the field of catalysts, and in particular relates to a palladium-free, amine-free and ligand-free copper catalyst system. The catalyst system can catalyze a Sonogashira reaction to prepare alkyne compounds. The catalyst system comprises cupric salt, potassium carbonate and a solvent dimethyl sulfoxide, wherein the molar ratio of the cupric salt to the potassium carbonate is 1:20-40; and the cupric salt is one or the mixture of more than one of copper acetate, copper acetylacetonate, copper trifluoromethanesulfonate and copper sulfate. In the catalyst system, noble metal is replaced by the stable cupric salt, so that the catalyst system is economic, cheap and non-toxic; for a substrate with poor activity, the catalyst system is added with TBAB to promote the reaction remarkably; and the catalyst system is suitable for large-scale application and industrialized production.

The invention discloses a CuO-loaded SiO2 catalyst applied to preparation of benzenediol and benzoquinone and a preparation method of the catalyst and relates to the technical field of production of chemical raw materials and intermediates. The preparation method of the catalyst comprises the following steps: adding copper acetylacetonate into a sublimator of a chemical vapor deposition device by a chemical vapor deposition method, adding SiO2 into a fluidized bed reactor, introducing carrier gas N2, fluidizing SiO2 under the vacuum pumping condition, reacting and ending, drying SiO2, introducing air into the sublimator, heating the sublimator and sublimating the copper acetylacetonate, regulating the temperature of the fluidized bed reactor, depositing the copper acetylacetonate on SiO2 and simultaneously decomposing and oxidizing copper acetylacetonate into CuO. The catalyst prepared by the method has the characteristics of large specific surface, small nano CuO particles and uniform load of CuO on a carrier SiO2; the high dispersion of CuO on SiO2 has an important influence for preparing benzenediol and benzoquinone by virtue of oxidization of phenol.

The invention provides a method for synthesizing a copper indium diselenide quantum dot. The CuInSe2 quantum dot is prepared through a two-step reaction by using copper iodide or copper acetylacetonate as a copper source, indium acetate or indium 2,4-pentanedionate as an indium source and oleylamine as ligand and solvent. The CuInSe2 quantum dot has a size of 4-10nm, has a tetragonal phase structure by XRD crystal phase analysis, has excellent photoelectric performance, and is suitable for preparing quantum dot sensitized solar cells. Compared with a hot injection method, the method has the advantages of simple and easy operation, simpler process, shorter synthesizing cycle, good production controllability and repeatability and low cost, is suitable for industrial production, and has a wide application prospect in solar cells.

The invention discloses a preparation method and application of a manganese copper composite oxide catalyst. A three-dimensional porous metal organic skeleton material is formed by taking Mn <2+> as ametal node based on a metal organic skeleton of Mn<2+> and taking trimesic acid as an organic ligand through self assembling; the crystal structure of Mn-BTC belongs to a trigonal crystal system; a space group (the formula is as shown in the description); copper elements derived from copper acetylacetonate are uniformly distributed on the three-dimensional porous metal organic skeleton material.The defects of complex control, low repeatability and unsuitability for large-scale production in the process of preparing the manganese copper composite oxide catalyst by the traditional method are overcome; furthermore, the degradation efficiency of organic dye in dye waste water by the catalyst prepared by the method can reach to 100 percent, the reusability is high and good commercial application value is achieved.

The invention relates to a synthesis method of a diaryl aniline compound. The method comprises steps of with copper acetylacetonate (Cu(acac)2) as a catalyst, enabling a nitrobenzene compound to react with a phenylboronic acid compound in an organic solvent in the presence of alkali, thus preparing the diaryl aniline compound. The method has the advantages of high product yield, high purity, simple reaction, simpleness and convenience for operation, short reaction duration and the like, thus providing a brand-new synthesis method for preparation of like compounds; and the synthesis method has a good industrialization prospect and a potential application value.

The invention relates to a preparation method of a Pt-Cu linear nano-catalyst. The method comprises the following steps of adding acetyl acetone platinum and potassium iodide into oleylamine, then adding copper acetylacetonate, reacting for 3 to 24 hours at the temperature of 160 to 180 DEG C; finally washing through absolute ethyl alcohol to obtain the Pt-Cu linear nano-catalyst. The method for preparing the Pt-Cu linear nano-catalyst, provided by the invention, is simple and convenient without using a template, simple to operate, and easy for production.

The invention belongs to the field of thin film materials and devices and discloses a perovskite photovoltaic battery taking a CuyCrzO2 film as a cavity transmission layer, and a preparation method thereof. The perovskite photovoltaic battery taking the CuyCrzO2 film as the cavity transmission layer comprises a transparent conductive substrate, the cavity transmission layer, a perovskite photosensitive active layer, an electron transmission layer and a metal electrode, and is characterized in that the cavity transmission layer is the CuyCrzO2 film and the CuyCrzO2 film is prepared by use of a solution method. The method comprises the following steps: 1, preparing a copper(II) acetylacetonate solution by taking copper(II) acetylacetonate as a solute and chlorobenzene as a solvent; 2, preparing a chromium(III) acetylacetonate solution by taking the copper(II) acetylacetonate as a solute and chlorobenzene as a solvent; and 3, then preparing a film on the transparent conductive substrate by use of a spin coating method by use of the copper(II) acetylacetonate solution and the copper(II) acetylacetonate solution according to a volume ratio of 10:1-1:10, firstly performing low-temperature annealing, then performing combustion oxidation under an atmosphere condition, and finally, performing high-temperature annealing processing to enable the film to be fully crystallized so as to obtain the CuyCrzO2 film. The purpose of decreasing the manufacturing cost of the battery is realized while battery performance is improved.

The invention provides an antimicrobial polyurethane composite and a preparation method and application thereof. The polyurethane composite is prepared from, by weight, 50-70 parts of modified polyurethane, 5-10 parts of composite antimicrobial agent, 5-10 parts of fiber reinforcement, 5-10 parts of ceramic filler, 10-15 parts of curing agent, 2-5 parts of diluent, 2-5 parts of silane coupling agent and 2-5 parts of surfactant. The composite antimicrobial agent is formed by compounding silver-loaded nanometer titania and chitosan. Modified polyurethane is prepared from polyhydric alcohol and epoxidized polybutadiene prepolymer. The epoxidized polybutadiene prepolymer is composed of epoxidized polybutadiene, copper acetylacetonate, isocyanate and ethyl acetate. The composition and ratio of the antimicrobial polyurethane composite are optimized, and the mechanical strength and flexibility of an antimicrobial polyurethane composite product are considered; meanwhile the antimicrobial performance of the antimicrobial polyurethane composite is greatly improved, breeding and propagating of bacteria can be effectively avoided, and healthy and comfortable experience is brought to a user.

The invention belongs to the technical field of noble metal nano particle synthesis and especially relates to a preparation method of a Cu-Ir alloy polyhedral nano cage having high catalytic activity in water electrolysis for producing oxygen. The method includes the steps of adding copper acetylacetonate in oleamine, increasing the temperature gradually to 270 DEG C under magnetic stirring with protection by nitrogen gas, maintaining the temperature for 15 min, reducing the temperature to an injection temperature, injecting an oleamine solution of iridium chloride, and maintaining the injection temperature for 2 h to obtain the Cu-Ir alloy polyhedral nano cage. The method is simple and convenient. The Cu-Ir alloy polyhedral nano cage has high electrically catalytic activity in an oxygen production reaction.

The invention belongs to the field of catalysis and environment protection, and more specifically relates to a loaded nano silicon carbide nickel-based catalyst, and a preparation method thereof. According to the preparation method, nano silicon carbide, copper acetylacetonate, 1-hexadecanethiol, nickel ion, ammoniacal liquor, and cerous sulfate are taken as raw materials to prepare the loaded nano silicon carbide nickel-based catalyst. The preparation method is simple; reaction conditions are mild; and large-scale production is convenient to realize. In reaction process, copper acetylacetonate is reacted with 1-hexadecanethiol firstly so as to realize combination of cuprous sulfide and nano silicon carbide, and obtain a nano silicon carbide/cuprous sulfide compound; the surface of the nano silicon carbide/cuprous sulfide compound is loaded with nickel hydroxide via deposition, and then is loaded with a small amount of auxiliary agent cerium. According to the loaded nano silicon carbide nickel-based catalyst, nano silicon carbide is taken as a carrier, nickel and copper are taken as active components, cerium is taken as an auxiliary agent; the loaded nano silicon carbide nickel-based catalyst is used in biomass gasification hydrogen production; catalytic activity and selectivity are high; catalytic reaction conditions are relative mild; production cost is low; and application prospect in industrialized production is promising.

The invention discloses a high-efficiency, low-cost perovskite-type solar cell which comprises a conducting substrate, an electronic transmission layer, an insulating buffer layer, a perovskite light absorption layer, a hole transport layer and a metal electrode, wherein the perovskite light absorption layer is prepared by a gas-phase auxiliary solution method; and the hole transport layer is a composite layer made of copper acetylacetonate and Spiro-OMeTAD. The invention also discloses a preparation method for the high-efficiency, low-cost perovskite-type solar cell. The perovskite-type solar cell prepared in the invention has the advantages of high photoelectric conversion efficiency, high stability, simple preparation technologies and low cost.

The invention provides a heatproof powdery coating used for external surfaces of microwave oven bodies. The heatproof powdery coating is prepared from, by weight, 10-15 parts of organosilicone resin, 40-50 parts of polyester resin, 40-50 parts of epoxy resin, 1-2 parts of dicyandiamide, 1-1.5 parts of copper acetylacetonate, 5-8 parts of alundum powder, 0.1-0.3 parts of dibutyltin dilaurate, 2-3 parts of a coupling agent KH560, 1-2 parts of toluene diisocyanate, 15-20 parts of titanium dioxide, 1-2 parts of urotropine, 1-2 parts of zirconium silicate powder, 0.2-0.5 parts of benzoin, 0.3-0.5 parts of a leveling agent, 0.2-0.4 parts of a brightener, 8-10 parts of aluminum nitride powder, 8-10 parts of carbon black and 0.2-0.4 parts of modified negative ion powder. A film formed by coating the powdery coating has the advantages of high temperature resistance, corrosion resistance, good wear resistance, good weatherability, low solidification temperature, short solidification time, good levelability and strong adhesion, can purify air, and can be used on induction cookers, microwave ovens, ovens, radiators and other household electrical appliance products.

The invention discloses a method for preparing graphene on the surface of copper powder, and belongs to the field of new material preparation. The method comprises the following steps: by taking copper powder as a catalytic substrate and methane as a carbon source, grinding and uniformly mixing the copper powder and anhydrous copper acetate powder or copper acetylacetonate powder according to a certain proportion, and placing the mixed powder in a heating area of a tubular furnace; under the mixed atmosphere of hydrogen and argon, the mixed powder is heated to 500-600 DEG C, heat preservation is conducted for a certain time, the anhydrous cupric acetate or copper acetylacetonate is converted into nano-copper particles with the surfaces coated with carbon films, and high-temperature bonding of the copper powder is hindered. And then the temperature continues to rise to 1000 DEG C or above, methane is introduced, and high-quality multi-layer graphene is prepared on the copper powder. The method is simple and easy to implement, can prepare the multilayer graphene on the copper powder, is suitable for large-scale industrial production, and has wide potential application in the fields of powder metallurgy, composite materials, electronic power and the like.

The invention belongs to the field of preparation of inorganic non-metallic materials and particularly relates to a preparation method of a tin dioxide/copper oxide composite nano material with a spherical hierarchical structure. The preparation method comprises the following steps: fully dissolving copper acetylacetonate and tin tetrachloride in a methanol solution, performing solvothermal reaction, filtering, washing, drying, calcining and cooling to obtain the tin dioxide/copper oxide composite nano material with the spherical hierarchical structure. The tin dioxide/copper oxide composite nano material prepared by the preparation method provided by the invention is high in purity and low in preparation cost, the size of a whole big ball is 3-6 mm, the size of a nano particle is 20-30 nm, the product uniformity and the dispersibility are good, and the large-scale production is easy. The tin dioxide/copper oxide composite nano material with the spherical hierarchical structure, prepared by the preparation method provided by the invention, has higher visible light photocatalytic activity and wide application prospect in the fields of dye wastewater and indoor harmful gas degradation, photocatalytic disinfection and the like.

The invention belongs to the field of organic synthesis, and discloses a synthesis method for hydroxytyrosol. The method comprises a step b that: a reaction is carried out on 3-bromine-4-hydroxy phenylethanol, an alkali metal hydroxide and a copper catalyst, wherein the copper catalyst is at least one selected from 8-hydroxyquinoline copper, copper acetylacetonate and BFMO-cuprous iodide. According to the process route, hydroxyl protection and deprotection steps are omitted, bromine does not need to be replaced with methoxyl, hydroxyl substitution is achieved in a sodium hydroxide aqueous solution under catalysis of the copper catalyst, and therefore, selectivity is good, the reaction route is short, the product can be obtained only through two steps, and the problem that an existing process route is too long is solved.