14results about "Copper nitrates" patented technology

The invention belongs to the technical field of resource recycling and metal organic framework material preparation, and particularly relates to a method for efficiently extracting a copper element from copper-indium-gallium-selenium powder and then directly synthesizing a copper-containing MOF material. The method comprises the steps that (1) the copper-indium-gallium-selenium powder and a prepared mixed solution of acid and hydrogen peroxide are subjected to contact leaching, and a solution A is obtained; (2) mixing the solution A with a first extraction agent to obtain a solution B and an organic phase A; adjusting the pH value of the solution B to 1.5, and adding a second extraction agent to obtain a solution C and an organic phase B; adding a nitric acid aqueous solution into the organic phase B for reverse extraction to obtain a copper nitrate solution and an organic phase C; (3) carrying out a hydrothermal reaction on a solution containing the organic ligand and the obtained copper nitrate solution to obtain a blue precipitate, namely a Cu-BTC material; according to the method, efficient recovery and efficient separation of the copper ions are achieved, and the Cu-BTC material with high purity is obtained in a low-cost and efficient mode.

A method of photocatalytic degradation includes contacting a copper hydroxide nitrate / calcium silicate / graphite-phase carbon nitride (Cu2(OH)3NO3 / CaSiO3@g-C3N4) nanocomposite with a solution including one or more pollutants. The method also includes degrading the pollutants on the nanocomposite and a method of fabrication of the nanocomposite.

This invention provides a method for preparing, a product of, and the application of rose-shaped basic copper nitrate Cu4(NO3)2(OH)6. The preparation method employs a polyol-mediated process, followed by centrifugation to separate nanoparticles from the solvent, and drying to obtain basic copper nitrate Cu4(NO3)2(OH)6. This preparation process is simple, the reaction conditions are mild, and the product quality is highly controllable, making it suitable for industrial production. The Cu4(NO3)2(OH)6 prepared by this method exhibits a unique rose-shaped three-dimensional hierarchical porous structure. Its large specific surface area and open framework facilitate mass transfer of reactants; simultaneously, its abundant pores enable high-density exposure of active sites and the construction of a confined reaction microenvironment. This catalyst exhibits excellent C2 content in the electrocatalytic CO2 reduction reaction. 2+ It exhibits high product selectivity with a Faraday efficiency of up to 76.7%, while effectively suppressing competitive hydrogen evolution reactions and reducing the formation of hydrogen byproducts.

The invention provides a short-process extremely-deep impurity removal method for a copper nitrate electrolyte, and belongs to the field of non-ferrous metal hydrometallurgy. According to the technical scheme, the method comprises the following steps: adding alkali into the copper nitrate electrolyte to neutralize and remove impurities, adsorbing with activated carbon, precisely filtering and removing impurities, and regenerating with activated carbon, so as to obtain a deeply purified solution in which arsenic, antimony, bismuth and silver ions are deeply removed. Through the steps, the process can be used for preparing the copper nitrate electrolyte (namely the deeply purified solution) with the arsenic concentration, the antimony concentration, the bismuth concentration and the silver concentration being 0.04-0.001 mg / L, is suitable for a high-purity copper electrolysis process and an electrodeposition process, and can be used for preparing HPCu-6N cathode high-purity copper meeting the regulation of GB / T 26017-2020 high-purity copper. The whole extremely deep impurity removal process of the process is high in reaction speed, simple in equipment, short in flow (short-flow deep removal of arsenic, antimony, bismuth and silver ions), simple and convenient to operate, stable in deep impurity removal effect and low in cost.

The purpose of the present invention is to provide a metal organic framework material having excellent desorption performance of adsorbed substances. The present disclosure is a metal-organic framework material containing an organic ligand and a metal ion, in which the half-width of the peak with the maximum peak intensity in a diffraction spectrum in the range of 2 [theta] = 3-40 degrees as determined by X-ray diffraction measurement is 0.05-0.225 degrees, and the glass adhesion rate as calculated by the following measurement method is 0-20 mass%. [Measurement of glass adhesion] When 100 mg of a sample of a metal organic framework material is introduced from the upper end of a vertically standing glass tube having a diameter of 6 mm and a length of 200 mm, the mass ratio of the sample adhered to the inside of the glass tube to the introduced sample is defined as the glass adhesion.

The invention discloses a silver removal method for preparing electrolyte for high-purity copper, and relates to the technical field of non-ferrous metal hydrometallurgy. The method specifically comprises the following steps that electrolyte for preparing high-purity copper in an electrolysis device is extracted in the electrolysis process, a silver removal agent is added into the electrolyte for preparing the high-purity copper, then stirring reaction is conducted, and the reacted electrolyte for the high-purity copper is obtained; and precisely filtering the reacted electrolyte for the high-purity copper, wherein the obtained filtrate is the electrolyte for preparing the high-purity copper after silver removal. According to the technology, the technical problem that the Ag content in the cathode high-purity copper obtained through electrolysis or electrodeposition exceeds 5N and above high-purity copper is solved, the technology has the advantages of being deep and environmentally friendly, equipment is simple, and the process is short.

An object of the present disclosure is to provide a metal organic framework having an excellent desorption performance of adsorbed substances. A metal organic framework comprising an organic ligand and a metal ion, wherein in a diffraction spectrum obtained from X-ray diffraction measurement within a range of 2θ=3 to 40°, a half width of a most intense peak is 0.05 to 0.225°, and a glass adhesion rate calculated by the following measurement method is 0 to 20% by mass, [measurement of glass adhesion rate] when 100 mg of a sample of the metal organic framework is placed into a vertically erected glass tube having a diameter of 6 mm and a length of 200 mm through an upper end thereof, a glass adhesion rate is defined as a mass fraction of the sample adhered to an insi de of the glass tube relative to a mass of the placed sample.

The invention provides a production treatment method of basic copper nitrate, which comprises the following steps: (a) adding a copper nitrate solution into a reaction kettle, adding liquid caustic soda at 0-50 DEG C under a stirring condition, and carrying out heat preservation reaction for 2-5 hours to obtain a reaction mixture; the mass concentration of copper nitrate in the copper nitrate solution is 30-40%, and the mass ratio of the copper nitrate to the caustic soda liquid is 1: (1.5-2); and (b) carrying out centrifugal separation on the reaction mixture, collecting filter residues, standing and settling the filtrate, and carrying out filter pressing treatment to obtain filter-pressed filter residues and filter-pressed filtrate. Specific production treatment equipment is matched with specific process steps, so that the yield of the product reaches 99.8%, the purity reaches 99.9%, and the daily output reaches 4.73 tons; the total nitrogen of the final wastewater is only less than or equal to 300mg / L.

To provide a metal organic structure having excellent desorbing performance of an adsorbed substance.SOLUTION: Provided is a metal organic structure constituted of organic ligand and metal ion, where a half-value width of a peak having the largest peak intensity out of a diffraction spectrum within the range of 2θ=3 to 40° which is obtained by X-ray diffraction measurement is 0.05 to 0.225°, and a glass deposit rate calculated by the following measuring method is 0 to 20 mass %. [Measurement of a glass deposit rate] when 100 mg of a sample of the metal organic structure is input from a top end of a vertically erected glass tube having a diameter 6 mm and a length 200 mm, a mass ratio of a sample deposited inside the glass tube to the input sample is a glass deposit rate.SELECTED DRAWING: None

The present invention is a process for comprehensively recovering nickel, ruthenium and platinum valuable metals from precious metal materials. The precious metal-containing materials are used as raw materials to recover nickel, ruthenium and platinum valuable metals. The process only uses sulfuric acid, nitric acid and hydrogen peroxide, and no other inorganic salts are added. This ensures that the entire system does not generate industrial wastewater and the production cost is relatively low.

A method for synthesizing a Cu2(OH)3NO3 / CaSiO3@g-C3N4 nanostructure includes mixing a calcium silicate (CaSiO3), a graphite-phase carbon nitride (g-C3N4) and a copper salt in a glycol solvent to form a mixture. The method also includes microwaving the mixture to form the nanostructure having a multi-phase crystalline structure with controlled morphology.

The present invention provides an ultra-high purity copper and a preparation method and application thereof, the method comprising the following steps: (1) mixing crude copper and acid solution to obtain a copper salt solution; (2) subjecting the copper salt solution obtained in step (1) to multi-stage leaching to obtain copper salt crystals; (3) in the process of copper electrolysis, adding the copper salt crystals obtained in step (2) to the electrolyte to adjust the copper ion concentration to obtain ultra-high purity copper; wherein the purity of the crude copper is ≤4N, and the purity of the ultra-high purity copper is ≥6N. The preparation method provided by the present invention combines the multi-stage leaching and copper electrolysis process, uses high-purity copper salt crystals as a copper ion maintainer in the electrolyte, ensures the smooth progress of the copper electrolysis process, and finally obtains ultra-high purity copper, realizes the stable production of ultra-high purity copper, and improves the economic benefits and product competitiveness of ultra-high purity copper industrialization.

This invention discloses a method for preparing high-purity copper salt from analytical grade copper salt, belonging to the field of high-purity inorganic chemical preparation and fine purification technology. The method includes the following steps: (1) preparing a high-concentration stock solution; (2) fractional dilution treatment; (3) selective adsorption treatment; (4) fractional recrystallization; and (5) washing and drying treatment. This invention prepares high-purity copper salt with a total metal impurity content of less than 20 ppm and a purity higher than 99.99% through selective complexation-adsorption with an oxygen donor-containing adsorbent material and fractional recrystallization. This invention is applicable to the preparation of high-purity copper sulfate, copper chloride, copper nitrate, and other products.

The present application belongs to the technical field of lithium battery recycling, and provides a mixed recycling process for waste lithium iron phosphate battery powder and ternary lithium battery powder. The present application uses waste lithium iron phosphate battery powder and waste ternary lithium battery powder as raw materials, and realizes efficient separation and recovery of valuable metal ions and graphite through processes of roasting and water leaching, one-stage organic acid leaching, two-stage organic acid leaching, acid dissolution, resin copper removal and the like, which is simple and environmentally friendly. The roasting process removes fluorine in the two kinds of waste battery powder, avoids corrosion and damage of fluorine to the autoclave in the subsequent high-pressure impurity removal process, improves the safety factor of the equipment, and increases the safety of the process. In addition, no other impurity removal auxiliary materials need to be added in the process, which greatly reduces the cost investment and increases the economic benefit.