8results 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.

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 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.

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

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.

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.