SAT NANO is one of the best supplier of copper oxide powder in China, we can supply 20nm, 50nm, 100nm, 1-3um, 5um, 10um.

Copper oxide has the advantages of high activity, soft agglomeration, low heavy metal impurities, and good dispersing performance. At the same time, because of its own characteristics, copper oxide is widely used in catalysis, sterilization and other fields.

production method

1. The copper powder oxidation method uses copper ash and copper slag as raw materials to be roasted and heated with coal gas for preliminary oxidation to remove moisture and organic impurities in the raw materials. The generated primary oxide is naturally cooled, and after crushing, it undergoes secondary oxidation to obtain crude copper oxide. The crude copper oxide is added to a reactor pre-loaded with 1:1 sulfuric acid, and the reaction is heated and stirred until the relative density of the liquid is doubled, and the pH value is 2 to 3, which is the end of the reaction, and a copper sulfate solution is generated. After clarification, under heating and stirring conditions, iron shavings are added to replace copper, and then washed with hot water until there is no sulfate and iron. After centrifugal separation, drying, oxidation roasting at 450℃ for 8h, after cooling, crushed to 100 mesh, and then oxidized in an oxidation furnace to obtain copper oxide powder.
2. Copper nitrate thermal decomposition method. The electrolytic copper is dissolved in dilute nitric acid and evaporated to dryness on a water bath, and then heated in a desiccator from 90°C to 120°C very slowly. When a soft basic salt is formed, boil it in water, filter, and dry; then slowly heat it to 400°C to remove most of the nitric acid; then heat it to 850°C after crushing and keep it for 1 hour to decompose it into oxidation copper. In order to make the reaction more complete, the product can be pulverized again, heated at about 700 ℃ for 1h, and then placed in a desiccator to cool.
3. Copper carbonate thermal decomposition method. Put the copper powder or copper wire in a fume hood with as little 6mol/L nitric acid as possible to completely dissolve it. If the solution is opaque, it needs to be filtered. In addition, the sodium carbonate solution is mixed with the copper nitrate solution and boiled to generate black basic salt precipitation. When the solid settles, discard the supernatant liquid, fully wash, filter and dry by decantation method. Put it on the evaporating dish and heat it with a small fire with sufficient stirring to decompose it into copper oxide. ...

If you have any interesting, please feel free to contact us at admin@satnano.com