5 results about "BASIC CUPRIC CARBONATE" patented technology

The invention belongs to the technical field of composite coatings, and particularly relates to a copper-tin electroplating solution and a preparation method and application thereof.The preparation method of the electroplating solution comprises the steps that citric acid is dispersed in water, potassium hydroxide is added, and a reaction solution 1 is obtained; basic cupric carbonate is added into the reaction solution until the solution becomes clear and does not generate bubbles, the solution is cooled, monopotassium phosphate is added, and a reaction solution 2 is obtained; dissolving potassium stannate in a dilute alkali hot solution, and after the potassium stannate is completely dissolved, adding hydrogen peroxide to obtain a reaction solution 3; and adding the cooled reaction liquid 3 into the reaction liquid 2 to obtain the electroplating liquid. The preparation method of the electroplating solution is simple and almost free of pollution, the electroplating solution is used for electroplating a metal test piece, and an obtained plating layer has high corrosion resistance.

The present invention relates to a method for preparing a polyether amine catalyst, and polyether amine. A polyether amine catalyst is a supported metal catalyst; γ-Al2O3 is used as a carrier; basic cupric carbonate, basic nickel carbonate and basic cobalt carbonate are used as precursors of supported metals; and the polyether amine catalyst is prepared by performing twice adsorption roasting and once reduction by means of an equivalent-volumetic impregnation method. Easier decomposition is achieved by using basic carbonate, and only water and carbon dioxide are generated, such that processes and costs for treating waste gases can be saved. By using the polyether amine catalyst to prepare polyether amine, a conversion rate and primary amine selectivity can be improved, and the color of products can be reduced. Therefore, the obtained polyether amine can have higher activity and wider application.

The invention belongs to the technical field of tungsten-copper alloys, and particularly relates to a high-thermal-conductivity tungsten-copper alloy and a preparation method thereof.The preparation method comprises the following steps that S1, ammonium paratungstate, copper oxide, copper tungstate, basic cupric carbonate, a silver-containing compound, an organic coordination agent, rare earth oxide and copper powder are obtained to serve as raw materials; s2, the raw materials except the copper powder are subjected to ball milling to obtain composite sol, the composite sol is dried to obtain precursor powder, and the precursor powder is subjected to heat treatment to obtain composite powder; and S3, the composite powder and the copper powder are laid according to the structure of bottom layer copper powder-composite powder-top layer copper powder, a composite pressed blank is obtained through pressing, infiltration sintering is conducted on the composite pressed blank, and the tungsten-copper alloy is obtained. By forming the three-stage core-shell structure of tungsten core-copper silver solid solution shell-rare earth transition layer, the comprehensive performance is superior to that of an existing silver nitrate / silver powder system, no harmful gas is discharged, and the green manufacturing requirement is met.

The invention provides a preparation method of a copper oxide material rich in oxygen vacancies, the copper oxide material and application, and belongs to the technical field of material preparation. According to the preparation method of the copper oxide material rich in oxygen vacancies provided by the invention, a solution combustion method based on basic cupric carbonate and an external oxidant is adopted, and the accurately controlled protective atmosphere and calcination conditions are combined, so that the copper oxide material rich in oxygen vacancies with a specific electronic structure can be simply and efficiently constructed; the oxygen vacancy content and the specific surface area of the copper oxide material are remarkably improved, so that a large number of oxygen vacancies exist in the material and can be in full contact with oxygen molecules. Therefore, the copper oxide material prepared by the method has excellent oxygen molecule activation performance, oxygen molecules in the environment can be continuously activated through oxygen vacancies even under the dark condition, sufficient reactive oxygen species (ROS) can be generated, and efficient antibiosis in dual modes of illumination and darkness can be realized.

The invention discloses a preparation method of amorphous basic cupric carbonate. The method comprises the following steps: (1) respectively preparing a soluble copper salt solution and a precipitant solution; (2) adding bottom water and a stabilizer into a reactor, adding the soluble copper salt solution and the precipitant solution obtained in the step (1) into the reactor in a parallel flow manner, and reacting while stirring to obtain slurry; the stabilizer is a solution containing isopropylamine chain dodecyl benzene sulfonate; (3) carrying out suction filtration and first washing on the slurry obtained in the step (2); (4) adding the material obtained in the step (3) into a solvent, and freezing; and (5) sequentially carrying out second washing, third washing and fourth washing on the material obtained in the step (4), and carrying out freeze drying on the washed material to obtain the amorphous basic cupric carbonate. According to the method, crystal structure transformation of amorphous basic cupric carbonate in the preparation process can be avoided, and the method is simple and easy to operate and does not need expensive instruments.