Method for preparing nanometer copper oxide by using copper scrap

A technology of nano-copper oxide and copper waste, applied in the direction of copper oxide/copper hydroxide, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of low cost, less pollution, simple and effective method

Inactive Publication Date: 2014-01-08
江西新金叶实业有限公司
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  • Abstract
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  • Claims
  • Application Information

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This method is simple to operate, and the raw materials ar

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  • Method for preparing nanometer copper oxide by using copper scrap
  • Method for preparing nanometer copper oxide by using copper scrap

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Experimental program
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Embodiment 1

[0014] (1) Immerse copper scrap with a copper content of 20wt% in a chloric acid solution with a concentration of 15%, and the weight ratio of solid to liquid is 1:5, whichever is used to clarify copper chloride CuCl 2 supernatant;

[0015] (2) Copper chloride CuCl 2 Solution copper content is adjusted and controlled at 0.5wt%, and copper chloride CuCl 2 The acid-base value of the solution is controlled at pH=2;

[0016] (3) Copper chloride CuCl obtained in step (2) 2 The solution is placed in a reaction tank containing sodium hydroxide NaOH reaction solution, the pH value of sodium hydroxide NaOH is adjusted, so that the final reaction pH value is 9, the temperature in the reaction tank is controlled at 60 ° C, and the stirring time in the reaction tank is 0.5 hours;

[0017] (4) The black precipitate obtained in step (3) was filtered and washed with water to remove sodium Na and chlorine Cl in the reactant to obtain black nano-sized copper oxide.

[0018] figure 1 It i...

Embodiment 2

[0020] (1) Immerse the copper scrap with a copper content of 40wt% in a chloric acid solution with a concentration of 30%, and the weight ratio of solid to liquid is 1:4, whichever is used to clarify copper chloride CuCl 2 supernatant;

[0021] (2) Copper chloride CuCl 2 Solution copper content is adjusted and controlled at 10wt%, and copper chloride CuCl 2 The acid-base value of the solution is controlled at pH=0;

[0022] (3) Copper chloride CuCl obtained in step (2) 2 The solution is placed in a reaction tank containing sodium hydroxide NaOH reaction solution, the pH value of sodium hydroxide NaOH is adjusted to make the final reaction pH value 11, the temperature in the reaction tank is controlled at 90 ° C, and the stirring time in the reaction tank is 2 hours;

[0023] (4) The black precipitate obtained in step (3) was filtered and washed with water to remove sodium Na and chlorine Cl in the reactant to obtain black nano-sized copper oxide.

[0024] figure 2 It is ...

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Abstract

The invention relates to a method for preparing nanometer copper oxide by using copper scraps. The method comprises the following steps of: immersing the copper scraps into a chloric acid solution, and extracting a clear copper chloride CuCl2 supernatant; regulating and controlling the copper content of a copper chloride CuCl2 solution to 0.5-10 percent by weight, and controlling the potential pH of hydrogen of the copper chloride CuCl2 solution to 0-2; placing the copper chloride CuCl2 solution obtained from the last step into a reaction tank which contains sodium hydroxide NaOH reaction liquid, regulating the pH value of the sodium hydroxide NaOH, wherein the pH value of end reaction is 9-12, the temperature of the reaction tank is controlled at 60-90 DEG C, and the stirring time of the reaction tank is 0.5-2 hours; filtering and washing black precipitates obtained from the last step, and removing sodium Na and chlorine Cl which are contained in a reactant to obtain black nanoscale copper oxide. The method for preparing the nanometer copper oxide through the copper scraps, which is disclosed by the invention, has the advantages of simpleness, effectiveness, low cost, less pollution and high purity.

Description

technical field [0001] The invention relates to a method for preparing nano-copper oxide by using copper waste, which belongs to the comprehensive utilization of the copper smelting industry. Background technique [0002] Copper oxide (CuO) is a black oxide of copper that is slightly hygroscopic. The molecular weight is 79.55, the density is 6.3-6.9 g / cm 3 , melting point 1326°C. Insoluble in ethanol and water, soluble in acid, ammonium chloride and potassium cyanide solution, slowly dissolved in ammonia solution. Among transition metal oxides, copper oxides have attracted much attention due to their important properties and applications. Copper oxide as a heterogeneous catalyst exhibits extremely high catalytic activity in many chemical reactions: decomposition of perchloric acid, degradation of nitrous oxide, selective reduction of nitric oxide and oxidation of carbon monoxide in supercritical water, carbohydrates and phenol. At the same time, as an important transiti...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y30/00
Inventor 叶礼平肖立殷
Owner 江西新金叶实业有限公司
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