80 results about "Cobalt metal" patented technology

The present application relates to the field of sodium ion battery, in particular to a kind of hard carbon negative material of fast charging sodium ion battery and preparation method thereof, for solving the shortcomings of existing hard carbon negative material of fast charging sodium ion battery, capacity is low, cycle performance is poor, limit the popularization of sodium ion battery in practical application problem;The present application can improve the conductivity and reaction kinetics of the material by doping nickel-cobalt metal oxide into nitrogen-containing hard carbon microspheres, thereby improving the theoretical capacity of the material, can significantly improve the charge-discharge rate of sodium ion battery, enhance the electrochemical performance of battery, and after being coated by composite gel structure, the structural stability of the material can be effectively improved, the volume change of the material in the cycle process is reduced, the cycle stability of sodium ion battery can be significantly improved, long cycle life and high capacity retention rate can be maintained while realizing fast charging, prolong the service life of battery.

This invention discloses a SiC-supported LDH nanocomposite material, its preparation method, and its application as a microwave absorbing and corrosion-resistant material. The SiC-supported LDH nanocomposite material has a core-shell structure, wherein the core is silicon carbide nanowires and the shell is a layered bimetallic hydroxide doped with a third metal. nw The loading of the third metal-doped layered bimetallic hydroxide is 43.1%–168%. This invention improves the microwave absorption performance of the composite material by adjusting the LDH shell content and doping the LDH with cobalt to form a ternary LDH. Furthermore, the core-shell structure of the SiC-loaded LDH nanocomposite not only provides multiple scattering conditions for microwaves but also acts as a physical barrier, extending the corrosion path and acting as a labyrinth effect to hinder the intrusion of corrosive media. Moreover, the LDH memory effect and anion exchange effect further resist chloride ion intrusion, achieving a lightweight, integrated application of microwave absorption and corrosion protection.

The application discloses a kind of bifunctional catalyst and its application in microwave-assisted preparation of biodiesel, belong to catalysis technical field.The application introduces cobalt metal in ZIF-8 skeleton, when MOFs derivative is prepared by calcination, the introduction of transition metal can construct magnetic center, adjust the magnetic loss ability of derivative material, so that the prepared catalyst has strong wave-absorbing performance under 2.45GHz industrial microwave field, can effectively absorb microwave energy and convert it into heat energy, thereby improving the energy utilization efficiency of reaction system, and finally improving the catalytic performance of catalyst, further improve the preparation efficiency of microwave-assisted biodiesel, and has good application value and prospect in catalysis technical field.

The invention discloses an in-situ growth carbon nanotube loaded iron-cobalt bifunctional catalyst as well as a preparation method and application of the in-situ growth carbon nanotube loaded iron-cobalt bifunctional catalyst, and relates to the technical field of zinc-air batteries. Comprising a nitrogen-iron co-doped carbon nanotube conductive network and iron-cobalt metal atoms loaded on the carbon nanotube conductive network, the nitrogen-iron co-doped carbon nano tube is used as a conductive network, the stable structure of the carbon nano tube is not affected, meanwhile, the carbon nano tube has a rich pore structure, rich iron-based active sites and a high specific surface area, iron-cobalt metal atoms are attached to the carbon nano tube more easily, and excellent catalytic performance is shown; the preparation method comprises the following steps: preparing a carbon nanotube conductive network, then loading iron-cobalt metal atoms on the conductive network, so that more iron-cobalt metal atoms are uniformly and firmly attached to the carbon nanotube conductive network, and through the interaction between iron-cobalt diatom catalytic active sites, the dual-function catalysis of ORR and OER is realized, and the performance of the zinc-air battery is improved.

[Problem] To provide: a nickel plating film that has suitable bath stability, pattern deposition properties, and plating deposition properties in a fine pad part, and excellent in solder connection reliability and surface smoothness; and an electroless nickel plating solution useful for forming the plating film. [Solution] A nickel plating film is formed on an object to be plated by subjecting the object to be plated to surface treatment using an electroless nickel plating solution that contains at least S2+ and a Co metal and in which the Co metal is included in the form of Co2+ and Co3+.

This application provides a method for recovering nickel and cobalt elements, which involves acid leaching a mixed slurry comprising laterite nickel ore and a hard material to separate a solution containing nickel and cobalt elements; wherein the hard material comprises quartz sand and / or mullite. This recovery method utilizes the high hardness of the hard material to achieve online cleaning of scale layers inside the reactor, thus avoiding contamination of the acid leaching system and solving the problem of scale accumulation inside the reactor, thereby effectively improving the production efficiency of nickel and cobalt metals.

The invention relates to the technical field of zinc-air batteries, and particularly discloses a quasi-solid zinc-air battery cathode material as well as a preparation method and application thereof. According to the cathode material, carbon black particles with aminated surfaces are used as a carrier, and ruthenium-cobalt bimetallic active components are loaded as a catalytic center. The preparation method of the cathode material comprises the following steps: dispersing aminated carbon black particles, ruthenium metal salt and cobalt metal salt in a water / methanol mixed solution, carrying out ultrasonic dispersion, and carrying out a hydrothermal reaction at a certain temperature; centrifuging, washing and drying the reaction product to obtain a solid precursor; and finally, carrying out thermal annealing treatment on the solid precursor under the inert gas protection condition to obtain the cathode material. The cathode material provided by the invention is suitable for an air cathode of a quasi-solid-state zinc-air battery, and has good catalytic activity and application prospect.

The invention belongs to the technical field of electrochemical oxygen reduction, and relates to a preparation method and application of a high-dispersion mesoporous carbon sphere loaded nano platinum-cobalt intermetallic compound electrocatalytic oxygen reduction material, a high-dispersion mesoporous carbon sphere precursor is firstly prepared, then the high-dispersion mesoporous carbon sphere precursor is subjected to high-temperature carbonization treatment to obtain high-dispersion mesoporous carbon spheres, and the high-dispersion mesoporous carbon spheres are subjected to high-temperature carbonization treatment to obtain the high-dispersion mesoporous carbon sphere loaded nano platinum-cobalt intermetallic compound electrocatalytic oxygen reduction material. Then, mesoporous carbon spheres loaded with platinum-cobalt intermetallic compound precursors are prepared on the basis of the obtained high-dispersion mesoporous carbon spheres, finally, the mesoporous carbon spheres are subjected to high-temperature heat treatment, and finally the high-dispersion mesoporous carbon sphere loaded nano platinum-cobalt intermetallic compound electro-catalytic oxygen reduction material is prepared. According to the invention, the high specific surface area and regular pore structure of the mesoporous carbon spheres are utilized to realize high dispersion and confinement of the platinum-cobalt precursor, and intermetallic compound nanoparticles with uniform size and uniform distribution are formed through heat treatment. The obtained material has high precious metal utilization rate and excellent stability, the synthesis method is simple, operation is easy and convenient, repeatability is high, and large-scale production is easy to achieve.

This invention belongs to the field of catalyst preparation technology, specifically disclosing a hydrotalcite-derived metal oxide catalyst, its preparation method, and its application. The preparation method includes the following steps: dissolving cobalt and aluminum metal salts in deionized water to obtain solution A; dissolving copper metal salt in deionized water to obtain solution B; preparing an alkaline precipitant solution C containing hydroxide and carbonate ions; under heating conditions, adding solution C dropwise to solution A while vigorously stirring, adjusting the pH to alkaline, obtaining a mixed solution; simultaneously titrating solution B and solution C together into the mixed solution, adjusting the pH to alkaline, aging the reaction, washing, drying, grinding, and calcining in an oxygen atmosphere to obtain the hydrotalcite-derived metal oxide catalyst. This hydrotalcite-derived metal oxide catalyst can promote the adsorption and conversion of NH3 and the generation of N2, showing good application prospects in the selective catalytic oxidation and degradation of NH3.

The invention relates to the technical field of photocatalysis, and discloses a photocatalyst and a preparation method thereof.The photocatalyst comprises a 3D honeycomb-shaped nitrogen-doped graphite carbon loaded cobalt metal catalyst; the non-noble metal hydroxide is loaded on the surface of the 3D honeycomb-shaped nitrogen-doped graphite carbon loaded cobalt metal catalyst. The photocatalyst has sufficient active sites, can effectively improve the activation rate and conversion rate of reactants in a carbon dioxide reduction reaction, and also has relatively high carrier separation efficiency, so that the number of photo-induced electrons and hole pairs participating in photocatalysis is increased, and the reduction reaction has relatively high quantum efficiency.

A method for laser cladding a gradient layer on the surface of a copper continuous casting crystallizer relates to a surface repair method for continuous casting crystallizers. The laser cladding gradient layer of this invention consists of an iron-based cladding layer and a nickel-based cladding layer. The iron-based cladding layer, serving as a transition layer, is composed of pure iron and pure cobalt metal powders. The nickel-based cladding layer, serving as the working layer, is composed of pure nickel, pure chromium, pure cobalt, and 99.999% yttrium oxide powder. These metal powders are dried at 200°C for 2 hours, then dry-milled at low speed using Al2O3 microspheres as the grinding media. A laser is used to transfer the intersection zone of the mixed powder and the laser light onto the workpiece to prepare the laser cladding gradient layer. This invention's laser cladding gradient layer strengthens the surface of the copper continuous casting crystallizer, enabling repeated repair of the copper crystallizer and improving material utilization.

The application discloses a coke oven gas deaminating agent and a preparation method thereof. The deaminating agent takes zinc and copper metal salts as active components, nickel and cobalt metal salts as auxiliary component, and takes magnesium aluminate spinel prepared from aluminum oxide and magnesium oxide as a carrier. The deaminating agent has the characteristics of high deaminating activity, high ammonia content penetration, and renewable utilization, is used for gas phase deamination, and is particularly suitable for a coke oven gas purification process, and can reduce the ammonia content to 0.1 ppm.

The invention relates to an amino acid mediated molybdenum-doped cobalt-based three-dimensional layered heterostructure catalyst and application thereof. A preparation method of the catalyst comprises the following steps: preparing a foamed nickel substrate; the preparation method comprises the following steps: dissolving cobalt metal salt, a carbon source precursor and amino acid in a mixed solution containing N, N-dimethylformamide, ethanol and deionized water, and carrying out a hydrothermal reaction to obtain a cobalt-based precursor coated with a carbon layer; calcining the cobalt-based precursor coated with the carbon layer in an inert atmosphere to obtain a cobalt-based catalyst coated with the carbon layer; molybdenum metal salt is dissolved in deionized water, the cobalt-based catalyst coated with the carbon layer is immersed in the solution, a hydrothermal reaction is carried out, and the amino acid mediated molybdenum-doped cobalt-based three-dimensional layered heterostructure catalyst is obtained. The molybdenum-doped cobalt-based three-dimensional layered heterostructure catalyst is prepared through hydrothermal and calcination methods, and the obtained catalyst has high catalytic activity and good stability in a urea oxidation coupling hydrogen production reaction.

The application provides an oxygen-coordinated cobalt monatomic catalyst, a preparation method and application thereof. The oxygen-coordinated cobalt monatomic catalyst is composed of a porous carbon skeleton, cobalt monatomic and oxygen atoms. The specific surface area of the porous carbon skeleton is 100-3000 m 2 / g, the mass content of the cobalt monatomic is 0.01%-10%, and the mass content of the oxygen atoms is 1%-15%. The catalyst anchors the cobalt metal center by using an oxygen-rich metal organic framework, and forms Co-O-C after carbonization. In the oxygen-coordinated cobalt monatomic catalyst, the oxygen-coordinated structure can adjust the electronic structure of the central metal cobalt to promote the transfer of active sites, provide the optimal adsorption energy of the intermediate OOH, and thus improve the selectivity of 2e ‑ ORR.

The present application relates to the technical field of semiconductors, and provides a cobalt metal thin film and a preparation method therefor. The method of the present invention comprises: putting a substrate into an inner cavity, and then reacting a cobalt source with a reaction gas in such a manner that CVD and ALD are carried out at the same time, thereby depositing a cobalt metal thin film on the substrate. The present application further provides a spraying assembly, which can fully diffuse and evenly mix the cobalt source and a reducing gas before deposition, reduce the influence of the non-uniformity of a reaction area and a gas phase diffusion effect on the uniformity of deposition, and improve the film thickness uniformity of the deposited thin film. In the present application, CVD and ALD processes are combined; compared with deposition by means of ALD alone, the growth rate of the cobalt metal thin film is higher; and compared with deposition by means of CVD alone, the prepared cobalt thin film has stable growth uniformity and relatively low film resistivity.

The application relates to a method for synthesizing 2,5-furan dicarboxylic acid from 5-hydroxymethylfurfural by using a ruthenium-loaded copper-cobalt metal oxide composite magnesium oxide catalyst. The method comprises the following steps: mixing and grinding a copper-cobalt hydroxide precursor prepared by a hydrothermal-calcination method with anhydrous magnesium acetate and then calcining to obtain a catalyst carrier; and using an impregnation-reduction method to load ruthenium nanoparticles on the carrier as an active component. The synergistic effect of the active component and the carrier enables 5-hydroxymethylfurfural to be catalytically converted into 2,5-furan dicarboxylic acid in a high-efficiency and selective manner. The catalyst preparation process is simple and easy to scale up. In the absence of alkali, the conversion rate of 5-hydroxymethylfurfural can reach 100%, and the yield of 2,5-furan dicarboxylic acid is 86.1%. The semi-preparative liquid chromatography is used for green separation and purification of the product, and 2,5-furan dicarboxylic acid with a purity of more than 99% is obtained. The method has potential application value for large-scale production of 2,5-furan dicarboxylic acid.

The invention discloses a uniform thermostable polycrystalline diamond compact and a preparation method thereof, the diamond compact comprises a hard alloy matrix, a diamond layer and a transition layer arranged between the hard alloy matrix and the diamond layer, the diamond layer is a modified diamond micro powder layer, the modified diamond micro-powder is boron-doped diamond micro-powder uniformly coated with metal cobalt; the transition layer is a metal layer and is deposited on the hard alloy matrix, and the hard alloy matrix and the diamond layer are sintered at high temperature and high pressure to form the polycrystalline diamond compact. According to the composite sheet, cobalt metal is evenly distributed, cobalt-rich and cobalt-poor areas can be avoided, the thermal stability of the composite sheet is excellent, and the composite sheet is more wear-resistant.

This invention discloses a nickel-cobalt metal-based wear-resistant and corrosion-resistant coating and its preparation method, relating to the field of surface coating technology. The key technical points include the following steps: S1. Degreasing and sandblasting roughening treatment of the metal substrate surface, followed by cleaning and drying with anhydrous ethanol; S2. Preparing a nickel-cobalt metal-based alloy powder, composed of the following components by weight: nickel 55-65 parts, cobalt 20-30 parts, chromium 15-18 parts, molybdenum 4-6 parts, tungsten 3-5 parts, iron 1-3 parts, silicon 0.8-1.5 parts, carbon 0.5-1.2 parts, and boron 0.5-1.0 parts. The technical effect is that through interlayer laser microtexturing treatment, a regular, non-smooth micro-pit array is created on the surface of the sprayed coating. The molten particles of the next layer of sprayed material embed into these micro-pits, forming a strong "mechanical interlocking" effect, greatly improving the interlayer bonding strength and shear resistance, effectively preventing interlayer misalignment and peeling.

The invention discloses a device for efficiently recycling nickel and cobalt metal in battery black powder and an operation method of the device, and belongs to the technical field of efficient recycling of strategic metal nickel and cobalt resources. The method mainly solves the problems of incomplete separation, high energy consumption in the extraction process, long technological process, large wastewater discharge amount and the like when valuable metals in the ternary lithium ion battery recovered black powder are recycled. The method comprises the following steps: recycling battery black powder; carrying out reduction reaction by using a rotary kiln type reduction reactor; secondary carbonylation is carried out in the carbonylation reactor, a nickel carbonyl product is obtained through primary carbonylation, and a cobalt carbonyl product is obtained through secondary carbonylation; and carbonylation residues are discharged after being detoxified in a second residue bin, and high-quality cyclic utilization of multiple metals is realized by adopting a wet-process lithium extraction process subsequently. Efficient extraction and enrichment of nickel and cobalt in recovered battery black powder are achieved through phase transformation of first-stage nickel and cobalt metal, second-stage carbonylation selective extraction and a gas phase metallurgy method, and the method is suitable for short-process enrichment and high-quality cyclic utilization of valuable metal in recovered black powder.

The invention provides a manufacturing method of a pMOS device, and the method comprises the steps: arranging at least three boron-rich layers between a cobalt metal layer and a germanium-silicon source drain, wherein the thickness of the boron-rich layers is smaller, the boron doping concentration of the boron-rich layers is gradually reduced from bottom to top, and forming a silicon cap layer which is larger in thickness and is free of boron and germanium doping on the uppermost boron-rich layer; the distance between the germanium-silicon source drain and the cobalt metal layer is enlarged, so that cobalt is only in contact reaction with Si in the silicon cap layer and does not directly contact the germanium-silicon source drain to react with Ge in the germanium-silicon source drain, loss of Si and Ge in the germanium-silicon source drain is avoided, uniformity of cobalt silicide is improved, and the service life of the germanium-silicon source drain is prolonged. Meanwhile, the boron-rich layer highly doped with the B element is used for inhibiting Ge in the germanium-silicon source drain from diffusing under the cobalt silicification reaction and the follow-up high-temperature process, the problem of cobalt silicide clustering is solved, the B concentration is gradually reduced from bottom to top, the hole defect in the cobalt silicide is improved, the parasitic resistance at the germanium-silicon source drain is reduced, and the reliability of the device is improved. The cobalt silicide is compatible with the germanium-silicon source drain, and the application range of the cobalt silicide is widened.

A method for the anodic dissolution of nickel and cobalt metals in acids from recycled lithium ion batteries to their corresponding metal salts is disclosed. The anodic dissolution system comprises an anode and cathode compartment separated by an anion exchange membrane separator. The anode comprises the nickel or cobalt metal to be anodically dissolved while the cathode is a non-dissolvable cathode. In further embodiments, the anodic dissolution is performed in an acidic electrolyte, for example, sulfuric acid to so produce the corresponding metal sulfates. Where desired, the metal salt enriched anode solution can be passed through a membrane distillation unit to further concentrate the metal salt solution by removing water, which can be recycled in the anodic dissolution system. The nickel or cobalt salt solution can then be directly used in producing the metal oxides used in lithium ion and other batteries.

[Problem] To provide a surface-treated galvanized steel sheet, a resin film-coated steel sheet, and a building panel having excellent corrosion resistance or processing adhesion with a resin film. [Solution] A surface-treated galvanized steel sheet comprising a steel sheet, a zinc plating layer formed on the steel sheet, a first chemical treatment coating layer formed on the zinc plating layer containing cobalt metal in an amount of 5 mg / m² or more and less than 30 mg / m², and a second chemical treatment coating layer formed on the first chemical treatment coating layer comprising (a) a zirconium component, (b) a bonding component based on the dehydration condensation of a silanol group, and (c) a urethane bonding component.

The invention relates to the technical field of battery materials, and discloses a perovskite lanthanum cobaltate coated lithium cobaltate composite material, a preparation method thereof, a positive plate and a lithium battery. The preparation method comprises the following steps: mixing a solution in which a divalent cobalt metal salt and a trivalent lanthanum metal salt are dissolved and a solution in which lithium cobalt oxide and sodium hydroxide are dispersed, then carrying out a hydrothermal reaction, centrifuging a product of the hydrothermal reaction, then carrying out vacuum drying on the product obtained by centrifuging, and then carrying out calcination treatment, so as to obtain the perovskite lanthanum cobalt oxide coated lithium cobalt oxide composite material. The perovskite coated lithium cobalt oxide composite material can be obtained. The perovskite lanthanum cobalt oxide coated lithium cobalt oxide composite material provided by the invention has excellent conductivity, rate capability and cycle performance.

The application discloses a zeolite imidazolate framework / polyimide nanofiber composite membrane material based on cobalt metal defects and a preparation method and application thereof, constructs a nanofiber membrane with polyimide as a base, secondly, adopts an in-situ synthesis method of first impregnating a cobalt salt and then introducing a ligand, makes ZIF-67 nucleate and grow on the surface of the PI fiber, forms a firm anchoring structure, prevents particle agglomeration and ensures uniform distribution of active sites, finally, introduces controllable metal defects by immersing in a second metal salt solution, breaks the crystal symmetry to increase unsaturated coordination sites, significantly enhances the electrostatic adsorption and chemical capture capacity on fine particulate matters, simultaneously optimizes the pore structure, strengthens the interception effect under the premise of not increasing the pressure drop, and realizes the high-efficiency-low-resistance balance. The composite structure has high removal rate, low pressure drop and excellent flexibility.

This invention provides a solid-state hydrogen storage microporous polymer, its preparation method, and its application. The method includes the following steps: Step S1, in an inert gas atmosphere, a cobalt source and ligand are dissolved in an alcohol solvent, and a cobalt metal functional building block is prepared through an electrophilic addition reaction; Step S2, in an inert gas atmosphere, the cobalt metal functional building block obtained in Step S1, an alkyne structural building block, and a catalyst are uniformly dispersed in a reaction solvent, and a covalently bonded porous material is prepared through a cross-coupling reaction; Step S3, the porous material obtained in Step S2 is purified to remove unreacted monomers and catalyst, thus preparing a solid-state hydrogen storage microporous polymer. The solid-state hydrogen storage microporous polymer prepared by this invention not only has significant advantages such as excellent porosity, high pressure resistance, extreme high and low temperature resistance, and ideal hydrogen storage capacity, but also possesses windproof, moisture-proof, intrinsically heat-insulating, and flame-retardant properties. The preparation process is simple and the conditions are mild, making it a high-performance, high-safety solid-state hydrogen storage material.

The invention relates to a preparation method of a crystal-amorphous mixed-phase RuCoO catalytic material and application of the crystal-amorphous mixed-phase RuCoO catalytic material in an acidic water electrolysis reaction. The preparation method comprises the following steps: preparing a glycerol cobalt metal complex, calcining to obtain a crystal-amorphous mixed phase Co3O4, and dipping the crystal-amorphous mixed phase Co3O4 in a RuCl3 aqueous solution to obtain a RuCoO mixed phase metal oxide. The catalytic material has excellent electro-catalytic performance and stability, and is suitable for improving the acidic water electrolysis reaction efficiency and reducing the energy production cost. The experimental verification comprises X-ray diffraction analysis, electron microscope observation and performance test. The catalytic material has a wide application prospect in the fields of hydrogen energy production and electrochemical sensors, and provides important support for promoting the development of a clean energy technology.

This invention discloses a method for preparing a zirconium-based metal-organic framework@nickel-cobalt metal-organic framework oxygen reduction catalyst and its application in the removal of chloramphenicol. The method uses a nickel-cobalt metal-organic framework as a substrate, and fuses a zirconium-based metal-organic framework onto it via a hydrothermal method to form an octahedral zirconium-based metal-organic framework@nickel-cobalt metal-organic framework. This structure significantly improves the accessibility of adsorption sites and electrocatalytic active sites while maintaining the structural integrity of the metal-organic framework. The oxygen reduction performance was tested, and the system was coupled with an electroactive biofilm to determine the degradation efficiency of chloramphenicol within 244 hours. The results show that the zirconium-based metal-organic framework@nickel-cobalt metal-organic framework exhibits excellent oxygen reduction performance. In the modified microbial fuel cell, the degradation efficiency of chloramphenicol reached 90.31% within 244 hours, and the concentration decreased from 18.62 mg / L to 1.80 mg / L. This study provides a new approach for constructing efficient and stable metal-organic framework-based electrocatalysts, and has good application prospects in the fields of antibiotic wastewater treatment and environmental remediation.

This invention discloses a face-to-face binuclear cobalt complex, its preparation method, and its applications, belonging to the fields of organic synthesis and catalysis technology. The face-to-face binuclear cobalt complex is crystalline material A or crystalline material B, and the chemical formula of crystalline material A is C. 68 H 68 Co2N4O6, the chemical formula of crystalline material B is C 54 H 76 Co2N6O6; The face-to-face binuclear cobalt complex of the present invention includes two crystal forms: crystal material A and crystal material B. In crystal material A, the distance between the two cobalt metal centers is 4.821 Å. Ligands connect the two metal centers via bridging to form a large cavity, constituting a binuclear cobalt complex. The two cobalt metals are in the +2 valence state and are synergistically activated, capable of generating hydroxyl radicals through homolytic cleavage. In crystal material B, the ligands connect the two cobalt metal centers via carbon chain bridging. The coordination environment of each cobalt metal center exhibits an octahedral configuration, the distance between the two metal centers is 5.720 Å, and they are in the +3 valence state, forming a binuclear cobalt complex.

The application discloses a silicon-bin ligand supported metal cobalt catalyst and a preparation method and application thereof, and belongs to the technical field of metal organic catalysis. The application takes indole and n-butyl lithium as raw materials, and a deprotonation reaction is generated at room temperature in a tetrahydrofuran solvent to obtain 2-lithium indole. A chlorosilane bin tetrahydrofuran solution is added at low temperature, and a nucleophilic substitution reaction is generated at room temperature. Li in the 2-lithium indole is replaced by Si in the chlorosilane bin to obtain a silicon-bin ligand. The silicon-bin ligand and a cobalt complex are taken as raw materials, and a ligand substitution reaction is generated at room temperature in a tetrahydrofuran solvent. The silicon-bin ligand replaces the ligand in the cobalt complex to obtain the silicon-bin ligand supported metal cobalt catalyst. The silicon-bin ligand supported metal cobalt catalyst prepared above is used for catalyzing an olefin silicon hydrogenation reaction, exhibits super-high catalytic activity, realizes complete conversion of the olefin and obtains Markovnikov product with excellent selectivity, and thus solves the problems of cost and product selectivity in industrial production.

The invention discloses a process for reducing the cobalt production cost of low-grade high-acid-consumption copper cobalt oxide ore, which adopts a selection-smelting combined method of first flotation waste throwing and then leaching to throw away high-acid-consumption gangue contained in the ore in advance, so that flotation concentrate with high copper and cobalt grades is obtained while acid consumption in the agitation leaching process is reduced, and the cobalt production cost of the low-grade high-acid-consumption copper cobalt oxide ore is reduced. First-time enrichment of cobalt metal is achieved; fe < 2 + > and Mn < 2 + > are further oxidized into higher valence states by SO2 + air + water vapor, Fe and Mn ions can be subsequently removed at low pH, the consumption of lime in the neutralization and iron removal process is reduced, and meanwhile, a better pH and solution environment is provided for resin adsorption; the iron-removed liquid is directly fed into cobalt metal ion selective adsorption resin, so that the cobalt metal ion concentration of the solution can be quickly improved, and the cobalt precipitation cost at the rear end is reduced; in the cobalt ion resin desorption process, a sulfuric acid solution with the mass concentration of 10-13% is adopted, so that the desorbed liquid is returned to the sulfuric acid leaching process, the sulfuric acid in the desorbed liquid can be perfectly recycled, and meanwhile, the cyclic enrichment of cobalt metal ion concentration is realized.