104 results about "Copper(II) oxide" patented technology

The invention relates to a spinel type high-entropy oxide electrode material and a preparation method thereof, and belongs to the field of nanomaterial preparation and new energy. The chemical formulaof the high-entropy oxide electrode material is one of (FeCoNiCrMn)O, (FeZnNiCrMn)O, (FeCoZnCrMn)O and (FeCoNiCrMnCu)O. The preparation method includes the steps of 1) mixing and ball-milling iron oxide, chromium oxide, manganese oxide and M metal oxide, wherein the M metal oxide is two or more of nickel oxide, zinc oxide, copper oxide and cobalt oxide; and 2) carrying out high-temperature calcination, and obtaining the spinel type high-entropy oxide electrode material by adopting a cooling mode of furnace cooling, air quenching and liquid nitrogen quenching. The particle diameter of the high-entropy oxide is 100-500nm, and the high-entropy oxide is determined to be in a spinel structure according to XRD; and the space group of the material is Fd-3m, and the specific surface area is 5-100m<2>g<-1>.

The invention provides a copper-based Cu-Cu2O-CuO catalyst for an organic silicon monomer synthesis reaction as well as a preparation method and an application of the copper-based Cu-Cu2O-CuO catalyst. The catalyst comprises components in percentage by mass as follows: 0-40% of elementary Cu, 40%-90% of Cu2O and 0-40% of CuO, and the sum of mass percentages of all the components is 100%. The method comprises steps as follows: a copper salt is dissolved to form a copper salt solution; an alkaline solution is dropwise added to the copper salt solution, and copper hydroxide precipitate is obtained and then converted into CuO precipitate; then a certain quantity of reducing agent is dropwise added to a CuO suspension for a controllable reduction reaction; obtained reaction products are filtered, washed and subjected to vacuum drying, and then the multicomponent copper-based catalyst is obtained. The experimental process route is simple, the controllability is high, and the prepared multicomponent copper-based catalyst is smaller in particle size and evener in particle size distribution, contains controllable components and shows the higher M2 selectivity and the higher silicon powder raw material conversion ratio.

The invention relates to a treatment method of coarse tin decoppered slag, which comprises the following steps: jetting industrial oxygen with the purity of 93-98.5% to the surface or inside of the coarse tin decoppered slag at the temperature of 850-1250 DEG C until the coarse tin decoppered slag is completely oxidized into copper oxide and tin tetroxide dust; leaching the copper oxide and tin tetroxide dust for 2-3 hours under atmospheric pressure and temperature under the condition of the initial acid of 70-120 g/L to obtain leached filtered slag, and carrying out reduction smelting to produce coarse tin; concentrating the leached filtrate to crystallize, and separating to produce chalcanthite product, or carrying out electrolysis to produce electrolytic copper; and returning the crystallization mother solution or electrolysis solution to the leaching process for solution preparation. The invention can separate tin and copper in the crude tin decoppered slag in a safe and efficient way, and does not generate waste water, waste gas or waste residue.

The invention relates to a method for preparing high-purity cupric oxide powder from acid cupriferous waste liquid, which comprises the following steps: mixing the acid cupriferous waste liquid and a precipitator (such as hydrocarbonate, carbonate, ammonia, sodium hydroxide or potassium hydroxide, and the like) to react until cupric ions are completely precipitated; washing precipitated slurry with a washing agent (a water solution containing a certain amount of electrolytes) after filtration, and then washing with water; and drying, calcining and pulverizing cupriferous materials after washing to obtain high-purity superfine cupric oxide powder. The acid cupriferous waste liquid can be acid etching waste liquid produced in the production of printed circuit boards. The cupric oxide powder prepared by the method has high purity, simple processes, low production cost and high economic benefit, and is suitable for industrialized production.

The invention belongs to the technical field of synthesis of inorganic nano materials and discloses a preparation method of a porous cobaltosic oxide nanobelt. The preparation method of the porous cobaltosic oxide nanobelt comprises the following steps: (1) firstly dissolving cobalt salt and a precipitator into water, so that a mixed solution is formed; (2) placing the mixed solution into a hydrothermal kettle, carrying out a hydrothermal reaction for 5-24 hours at the temperature of 100-250 DEG C; (3) after the hydrothermal reaction is finished, separating and washing reaction products, and then roasting the reaction products at the temperature of 350-800 DEG C, so that the porous cobaltosic oxide nanobelt is obtained. According to the preparation method of the porous cobaltosic oxide nanobelt, no surfactant or organic solvent is adopted in a synthetic process, and a new synthetic method is provided for a multilevel structure copper oxide material; a preparation technology is simple, the whole technological process is carried out in a reaction kettle, no complex equipment is needed, and the preparation method of the porous cobaltosic oxide nanobelt is simple, efficient, low in cost, environmentally friendly and easy for large-scale synthesis.

The invention relates to a preparation method of a catalyst for hydroxypivalaldehyde liquid phase hydrogenation preparation of neopentylene glycol. The catalyst comprises 20-65wt% of copper oxide, 15-50wt% of alumina, 2-25wt% of zinc oxide, 0.1-5wt% of tin oxide, 0.5-25wt% of alkaline earth oxide and 0-20wt% of titanium oxide and/or zirconia. The compounds containing copper, aluminum, zinc, tin and alkaline earth metal are mixed to form a mixture aqueous solution according to a certain ratio, the solution and an alkaline precipitant are added into a nanometer oxide-containing dispersion liquid in parallel, the mixture undergoes a precipitation reaction, the reaction product is aged and filtered, and the filter residues are washed, dried, roasted and compressed to form a molded catalyst. The catalyst prepared by the method has high activity and good selectivity in hydroxypivalaldehyde liquid phase hydrogenation preparation of neopentylene glycol, can promote 1115 ester conversion, can effectively improve liquid-repellency, and has high catalyst intensity and good stability.

The invention discloses a catalyst used in fatty alcohol production with a fatty acid methyl ester catalyzed hydrogenation technology. The catalyst is composed of, by weight: 18-66% of a mixture of copper oxide and zinc oxide, 0-40% of one or two selected from manganese oxide and nickel oxide, 5-17% of alumina, and 0-45% of a carrier, wherein the carrier is diatomite or calcium carbonate. The catalyst is advantaged in environment friendliness, high activity, good product stability, and the like. The invention also discloses a preparation method of the catalyst used in fatty alcohol productionwith the fatty acid methyl ester catalyzed hydrogenation technology. The method comprises steps that: at least two soluble salts of copper, zinc, manganese, nickel, and aluminum are dissolved in water, such that a mixed solution is prepared; water, or a mixture of water and the carrier is adopted as a base solution; an aqueous solution of sodium carbonate and the mixed solution are dropped into the base solution with a co-current flow; when dropping is finished, a precipitate is obtained; the precipitate is aged, filtered, washed, dried, roasted, and pressed, such that a finished product is obtained. The preparation method is advantaged in simple technology, high operability, easy industrialization, and the like.

The invention relates to the field of catalysts used for synthesis of dimethyldichlorosilane, in particular to a ternary copper catalyst CuO-Cu2O-Cu for synthesis of dimethyldichlorosilane and its preparation method. The method comprises the following steps of: 1) taking copper oxide powder as a raw material, adding a reducing gas, controlling its flow to make the flow of the reducing gas introduced into per gram of CuO particles at 0.1ml/min-100ml/min, maintaining the temperature at 100DEG C-600DEG C, carrying out a reduction reaction for 0.5h-6h, thus obtaining partially reduced copper oxide; and 2) subjecting the partially reduced copper oxide obtained in step 1) to breaking and ball-milling, thus obtaining the ternary copper catalyst for synthesis of dimethyldichlorosilane. With copper oxide as the raw material, the method prepares the ternary copper catalyst CuO-Cu2O-Cu through a one-step reaction, and has the advantages of simple technological process, convenient operation, strong process controllability, and easy mass production. The prepared catalyst shows high dimethyldichlorosilane selectivity and silicon powder material conversion rate.

The invention provides a copper oxide-gold nano composite material, a preparation method and an application thereof. The copper oxide-gold nano composite material is prepared by uniformly dispersing gold nano particles on a copper oxide nano sheet. The preparation method of the copper oxide-gold nano composite material comprises the following steps: optionally adding thiol-polyethylene glycol into an aqueous solution of the gold nano particles, then adding the copper oxide nano sheet, and performing self-assembling by virtue of the electrostatic interaction and the adsorption effect of the nano sheet to obtain the copper oxide-gold nano composite material. The preparation process is simple, the operability is high, the requirement for equipment is low, the prepared copper oxide-gold nano composite material is high in catalytic activity, the degradation rate of organic dye methylene blue can be remarkably improved, the time for complete degradation can be shortened, and the copper oxide-gold nano composite material has capacity for high-efficiently catalytically degrading organic dye.

The invention discloses a graphene-coated copper oxide composite cathode material and a method for manufacturing the same. The graphene-coated copper oxide composite cathode material comprises, by mass, from 20% to 90% of copper oxide and from 10% to 80% of graphene. The method includes uniformly mixing copper salt solution and graphene oxide solution at first, and stirring the copper salt solution and the graphene oxide solution at a constant temperature for 15 minutes to 1 hour to obtain mixed solution; dripping sodium hydroxide solution into the mixed solution, continuously stirring the mixed solution added with the sodium hydroxide solution for 0.5 hour to 2 hours and allowing the mixed solution added with the sodium hydroxide solution to stand for 2 to 24 hours; and performing centrifuging and hydrothermal processing for the mixed solution added with the sodium hydroxide solution to obtain a product, and drying the product at the temperature of 120 DEG C for 12 hours to obtain the graphene-coated copper oxide composite cathode material. The graphene-coated copper oxide composite cathode material and the method have the advantages that the synthesis method is simple, the manufactured graphene-coated copper oxide composite cathode material is good in performance, and technical problems of poor conductivity of a copper oxide electrode and decrease of capacity due to gradual chalking in charge and discharge processes are solved.

The invention relates to a beneficiation method for copper oxide cobalt ores. The beneficiation method is characterized by comprising the following steps of 1, ore grinding, i.e. crushing and grinding raw ores; 2, copper oxide flotation, i.e. adding sodium sulfide, a collecting agent butyl xanthate and a foaming agent terpenic oil in the primary roughing process, adding sodium sulfide, butyl xanthate and terpenic oil in the primary scavenging process, adding sodium sulfide, butyl xanthate and terpenic oil in the secondary scavenging process and carrying out secondary blank concentration to obtain copper oxide concentrates and flotation tailings; and 3, magnetic separation, i.e. carrying out primary roughing magnetic separation on the flotation tailings to obtain cobalt rough concentrates and magnetic separation tailings and carrying out secondary concentration magnetic separation on the cobalt rough concentrates to obtain cobalt concentrates and magnetic separation tailings. The invention provides the beneficiation method for the copper oxide cobalt ores, which reduces cost and pollution. The method disclosed by the invention is suitable for the copper oxide cobalt ores comprising copper oxide ores, copper oxide cobalt ores and cobaltous oxide minerals.

The invention provides a preparation method and a use method of a core-shell catalyst for carbon dioxide hydrogenation. The method includes the steps: firstly, synthesizing a copper-oxide-containing and zinc-oxide-containing mixed metal oxide precursor with catalytic activity; secondly, preparing a copper nano-particle composite material coated by MOFs of ZIF-8 in a solid phase etching manner; performing procedure heating roasting to obtain a copper-zinc alloy core-shell catalyst coated by nitrogen-doped carbon materials. The method is characterized in that a MOFs material ZIF-8 is prepared bya solid-phase etching method without solvents, carbon material shell layer containing a lot of pyridine nitrogen is acquired in a high-temperature calcination manner, a copper zinc alloy core is acquired, a novel preparation technique of a pyridine nitrogen-doped carbon material and a copper zinc alloy is developed, the core-shell catalyst is applied to carbon monoxide reaction prepared by carbondioxide hydrogenation, the core-shell catalyst has excellent catalytic activity, and catalytic effects of the copper zinc alloy are greatly facilitated in the presence of a lot of pyridine nitrogen.

The invention discloses a catalyst for synthesizing (ethyl) vanillin by using a glyoxylic acid method, and the method is characterized by taking a rare-earth Y-molecular sieve as carrier, and copper oxides and cobalt oxides as active components and comprising the steps of active-component salt solution preparation, carrier dipping, neutralization and precipitation, and oxidizing roasting. The molar ratio of copper to cobalt loaded on the catalyst is 1:(0.1-1); the selected rare-earth Y-molecular sieve comprises the following compositions in percentage by weight: no less than 17% of Re2O3, no less than 5% of SiO2/Al2O3, and no more than 2% of Na2O; and the mass fraction of the copper and cobalt active components on the catalyst is 0.01-0.1. The invention has the advantages that because an industrial catalyst is adopted as the carrier, the method for preparing the catalyst is simple, the activity of the catalyst is high, the generation of polymeric by-products is restrained, and the yield of the synthesized vanillin is 89.2%.

The invention relates to a preparation method for nano-copper powders. The preparation method comprises the following steps of: A: preparing nanoscale basic cupric carbonate by a method of precipitation: specifically, preparing a bivalent copper ion solution with certain concentration, then, preparing a precipitant solution with certain centration, starting a spiral channel type revolving bed hypergravity reactor, then, independently injecting two solutions into the reactor from different inlets according to a certain revolving speed to react to cause the two solutions to generate precipitation reaction, and after the reaction is finished, filtering, washing and drying a reaction liquid in sequence; B: carrying out calcination on a dried product to obtain a nanometer copper oxide; and C: reducing the nanometer copper oxide to obtain the nano-copper powders. The preparation method can stably produce the nano-copper powders with even particles on batch, and the produced nano-copper powders have a good application prospect on the aspects, including electric conduction, catalysis, lubrication and the like.

The invention provides a preparation method of an octahedral cuprous oxide catalyst, belonging to the technical field of catalyst synthesis. The preparation method comprises the steps of dissolving copper oxide powder into ammonia water and an ammonium salt solution, then mixing the solution with ethanol, carrying out solvothermal reaction in the presence of strong alkali, separating and washing products, and carrying out vacuum drying, so as to obtain octahedral cuprous oxide. According to the preparation method, octahedral cuprous oxide is synthesized by taking commercial copper oxide powder as a copper source and ethanol as a reducing agent without adding a structure-directing agent, and compared with an existing preparation method utilizing the structure-directing agent, the cost is relatively low; furthermore, the shape of octahedral cuprous oxide can be regulated and controlled by regulating the copper ion concentration, the volume ratio of ethanol to water, the solvothermal temperature and time, and regulating and controlling conditions and measures are easy to implement; the whole technical process is carried out in a reaction kettle and is simple, convenient, efficient and environment-friendly, and scale production is easily realized. Furthermore, the obtained octahedral cuprous oxide catalyst can be further utilized for synthesizing methyl chlorosilane monomers.

The invention relates to a carbon deposit resistant anode membrane material and a preparation method thereof, belonging to the flat-plate solid oxide fuel cell (SOFC) field. The preparation method is based on casting means; firstly, zirconia and nickel oxide slurries of organic pore-forming materials are added by means of casting, and membrane material of a large anode supporting body is obtained after sintering; secondly, cupric oxide dust and cerium oxide dust are uniformly mixed; thirdly, after preparation of the slurries, silk-screen printing on the surface of the anode supporting body is performed; fourthly, a catalysis layer is sintered under high temperature, and the carbon deposit resistant anode membrane material is obtained. The method is simple in technology and low in cost and is suitable for industrialized production, and the prepared anode membrane material has good carbon deposit resistance.

The invention relates to a method for preparing a hydrogenation catalyst by loading copper oxide on a silica gel carrier. The method is characterized by comprising the following steps of: (1) dropping silica sol with a pH value regulated to 2-3 into a mixed solution of copper salt and cerium salt, and stirring at room temperature to form uniform sol, wherein by counting the copper salt in terms of CuO, the cerium salt in terms of CeO2 and the silica sol in terms of SiO2, CuO/SiO2 is 0.1-0.3 by weight, and CeO2/SiO2 is 0.018-0.05 by weight; (2) dropping a precipitant solution into the sol, stirring at the same time, stopping stirring after the sol is completely gelatinized, and ageing at room temperature to obtain gel, wherein the mass ratio of precipitants to the copper salt is 0.2-0.72; (3) washing the gel with water till the pH value of washing liquor is 6.5-7.5, drying, and roasting at 450-600 DEG C to obtain the hydrogenation catalyst in which the copper oxide is loaded on the silica gel carrier. The hydrogenation catalyst has the advantages of large loading capacity, good dispersity of active component copper oxide, small crystalline grain and high catalytic reduction activity.

The invention discloses a catalyst used for catalytically oxidizing NO and a preparation method thereof. Manganese oxide and copper oxide are taken as active components of the catalyst and titanium dioxide is taken as a carrier. The manganese oxide and copper oxide which belong to P-type semiconductors are taken as the active components, thereby obviously promoting the activity of the catalyst atlow temperature and meanwhile overcoming the problem of steam and SO2 influence on the catalyst easily caused by a single active component. The catalyst has the advantages that the cost is low, the preparation process is simple, the environment is protected, the assistance of other external condition is unnecessary in a catalytic reaction process, the industrial application value is high, and thecatalyst can be applied to a catalytic oxidation-chemical absorption method for treating the SO2 and NOx in fire coal smoke.

The invention provides a three-dimensional sea urchin-like/porous composite structure lithium ion battery Cu/CuO/SnO2/C anode which is composed of three-dimensional nano-porous copper, CuO film, SnO2and carbon, wherein the CuO film is a continuous film formed by partially oxidizing the surface of the three-dimensional nano-porous copper, the CuO film coating the three-dimensional nano-porous copper and the carbon coating the SnO2, so that the carbon-coated SnO2 can form a sea urchin-like carbon-coated SnO2 layer on the outer surface of the CuO film-coated three-dimensional nano-porous copper.The invention also provides a preparation method of such anode. In the invention, production process of the lithium ion battery anode is simplified, and active components are prevented from strippingoff during charge/discharge process of the lithium ion battery, thus effectively improving the cycle performance and rate capability of the lithium ion battery anode.

The invention belongs to the field of biological materials, and relates to an antibacterial polylactic acid master batch, which is mainly composed of carbonization layer modified copper oxide and cuprous oxide nanoparticles and polylactic acid. According to the antibacterial polylactic acid master batch provided by the invention, the antibacterial performance of polylactic acid is greatly improved, the production process is simple, the raw materials are easy to obtain, and the cost is low; and the master batch has good biocompatibility, can be applied to antimicrobial products, and can be applied to the fields of food packaging, medical instruments, building material decoration, aquaculture and the like.

The invention discloses a chemical method for preparing copper oxide crystals with biological micro-nano structures. The method comprises the following steps of: (1) preparing a carrier, namely pretreating a product which contains biological fiber or is processed by biological fiber in nature to obtain a biological template serving as a carrier of copper sulfate, wherein the product is pretreated by the following steps of: preparing an NaOH solution, putting the product which contains biological fiber or is processed by biological fiber into the NaOH solution for soaking and boiling or water bath heating; ultrasonically cleaning with distilled water, putting the product into mixed acid in which the molar ratio of sulfuric acid to oxalic acid is 2:1 and ultrasonically treating for 1 hour, standing for 24 hours, taking the product out, ultrasonically cleaning with distilled water and drying at the temperature of 80 DEG C to obtain the biological template serving as the carrier, wherein the concentration of the sulfuric acid is 2 mol/L; (2) putting the biological template prepared in the step (1) into a copper sulfate solution for soaking and adsorbing copper sulfate; and (3) calcining the biological template which adsorbs copper sulfate to remove the biological template and obtain a product which is thermally-decomposed by the copper sulfate and serves as the copper oxide crystals with biological micro-nano structures.

The invention discloses a preparation method of nano copper powder. Copper oxide and calcium oxide powder are made into calcium cuprate powder by mechanical mixing and calcination technologies, then the calcium cuprate powder is reduced in a hydrogen atmosphere, then cleaning with a dilute hydrochloric acid solution is carried out, and the nano copper powder is obtained. The preparation method is simple in technology, the used raw materials are low-cost and are easy to obtain, no special equipment is required in a mixing stage, a calcination stage or a reduction stage, and rapid continuous mass production can be realized. The prepared nano copper powder is uniform in particle size, good in dispersity and low in oxygen content, and the mean particle size of primary particles is around 20 nanometers.

The invention relates to a copper-mixed tungsten powder preparation process. The process includes the steps that Na2WO4.5H2O and CuSo4.5H2O are dissolved in distilled water; a hydrochloric acid solution is dropped and components are magnetically stirred and evenly mixed; a mixed solution is placed in a high-pressure reaction kettle to be heated and react; the mixed solution is cooled to the indoor temperature and filtered, and sediment is acquired; the sediment is washed and dried; the dried sediment is placed in a muffle furnace so as to be burnt, and tungsten trioxide and copper oxide powder is acquired; tungsten trioxide and copper oxide powder is placed in a plasma reaction chamber, inert gas is ionized in the reaction chamber to generate high-temperature plasma, and after being heated through the high-temperature plasma, the tungsten trioxide and copper oxide powder is reduced to tungsten-copper powder under a reducing atmosphere. By the adoption of the process, tungsten oxide and copper oxide are prepared through sodium tungstate, copper sulfate and hydrochloric acid, the tungsten-copper powder is prepared through a plasma electric arc method, due to the fact that the large temperature difference exists between the tungsten-copper powder and a cooling medium, crystal nucleus growth is effectively restrained in the nucleation promoting process, and the acquired tungsten-copper powder can reach the nanoscale.

The invention relates to a method for removing a chlorine from zinc solution by adopting cadmium removed and surface naturally-oxidized copper slag, and belongs to the field of zinc wet metallurgy. The method concretely comprises the following steps: 1, leaching cadmium from fresh copper and cadmium slag of the zinc solution in sulfuric acid to obtain cadmium removed copper slag with the Cu content of 15-70% and the Cd content of 0.2-1%; 2, piling up the cadmium removed copper slag until the surface is naturally oxidized and the natural oxidation degree is 5-35%; 3, adjusting the initial sulfuric acid concentration by using a chlorine-containing zinc solution, adding 5-50 kg/m<3> of the oxidized copper slag, and stirring the solution and the oxidized copper slag, wherein a ratio of NCu/NCl is 1.4-2.0, the chlorine removal temperature is controlled to be 30-80 DEG C, and the chlorine removal duration is 0.5-1 h; and 4, carrying out filtration and removal after the reaction ends in order to obtain a chlorine removed zinc solution and chlorine removed slag. The method adopting a prior cadmium removal technology reduces the impurity content of the copper slag, and improves the copper grade of the copper slag; the cadmium removed and surface naturally-oxidized copper slag is adopted to substitute fresh copper slag, so a copper sulfate or oxidized leached copper slag process for preparing a copper sulfate solution is avoided; and the method has the advantages of effective simplification of the process, production cost reduction, and increase of enterprises' economic benefits.