Copper Oxide CuO powder CAS 1317-38-0

Copper Oxide CuO powder

How is Copper Oxide CuO powder produced? 
 

There are several methods of industrial production of copper oxide

1. Copper powder oxidation method

Using copper ash and slag for raw materials， it is 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 pulverization, it undergoes secondary oxidation to obtain crude copper oxide. The crude copper oxide is added to a reactor pre-installed with 1:1 sulfuric acid, and the liquid is heated and stirred until the liquid's relative density is doubled. The pH value is 2 to 3 at 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°C for 8 hours, cooling, crushing to 100 meshes, and then oxidation in an oxidation furnace to obtain copper oxide powder.

2. Nitration of copper wire or copper powder

Dissolve the copper wire or copper powder in 6mol/L nitric acid to keep the copper in excess, heat the solution to a pH value of 3-4 to remove the iron hydroxide precipitate, then mix it with 10% (mass) sodium carbonate solution and heat to boiling. Alkaline salt is precipitated, discard the supernatant, wash thoroughly with water, filter, and dry. The dried basic copper carbonate is heated and decomposed into black copper oxide powder under a small fire with sufficient stirring: CuCO3·Cu(OH)2=2CuO+CO2↑+H2O.

When no more carbon dioxide is produced, the decomposition is complete.

3. Copper nitrate thermal decomposition method

The electrolytic copper is dissolved in dilute nitric acid, evaporated to dryness in a water bath, and then heated in a desiccator from 90°C to 120°C very slowly. When the soft basic salt is formed, it is boiled in water, filtered, and dried; then it is slowly heated to 400℃ to remove most of the nitric acid; then crushed and heated to 850℃ for one hour to decompose into oxidation copper. To complete the reaction, the product can be pulverized again, heated at about 700°C for 1 hour, and then placed in a desiccator to cool.

4. Conductive water dissolution method

Dissolve high-purity copper nitrate with conductive water, filter, add excess high-purity NH3·H2O to the clear liquid, filter out impurities and residue, and use high-purity nitric acid to neutralize the filtrate to precipitate copper hydroxide. Filter, wash once with conductive water, add nitric acid to dissolve the residue, add high-purity ammonium carbonate to precipitate copper carbonate, then wash, spin dry, dry in an oven at 200°C, burn at 450-550°C for 3 to 4 hours, and get Spectral pure copper oxide:

5. Copper carbonate thermal decomposition method

Put 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. Besides, 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. Please put it on an evaporating dish and heat it with a small fire with sufficient stirring to decompose it into copper oxide.

Copper Oxide Uses:

As a significant product of copper mining, copper(II) oxide is the starting point for producing other copper salts. For example, many wood preservatives are produced from copper oxide.

Cupric oxide is a ceramics pigment that produces blue, red, and green, and sometimes gray, pink, or black glazes.

It is also incorrectly used as a dietary supplement in animal feed. Due to low bioactivity, negligible copper is absorbed.

It is also used when welding with copper alloys.

A copper oxide electrode formed part of the early battery type, the Edison–Lalande cell. The copper oxide was also used in a lithium battery type.

Besides, copper(II) oxide can be used as catalysis, superconductivity, ceramics; and catalyst carriers, electrode activity materials;

glass, porcelain colorants, optical glass polishing agent, oil desulfurized; the propellant rocket fuel speed catalyst.

FAQ of Copper Oxide CuO Powder：
Q: Is copper oxide safe for skin?
A: Copper oxide is generally not recommended for direct skin contact. It can cause irritation and allergic reactions. While some skincare products contain copper derivatives, pure copper oxide should be used with caution and under professional guidance to avoid adverse effects.

Q: What does copper oxide do to the body?
A: Copper oxide can be harmful if ingested or inhaled. It can cause irritation to the eyes, skin, and respiratory system. Ingestion may lead to gastrointestinal issues, and long-term exposure can affect the liver and kidneys. However, copper is an essential nutrient in small amounts, and some copper compounds have antimicrobial properties.

Q: What is copper oxide powder used for?
A: Copper oxide powder has various applications, including as a pigment in ceramics and paints, a catalyst in chemical reactions, and a fungicide in agriculture. It is also used in the production of copper-based alloys and in the electronics industry for its conductive properties. Additionally, it is used in the manufacturing of batteries and in water treatment processes.

Storage Condition of Copper Oxide CuO Powder：
Copper Oxide CuO Powder should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition should avoid the heavy pressure, according to ordina.

Packing & Shipping of Copper Oxide CuO Powder：
It is packed in double plastic bags inside, which can be filled with argon in vacuum; it can be vacuumed and filled with argon for protection..
Copper Oxide CuO Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Copper Oxide CuO Powder shipping: could be shipped out by sea , by air, by express as soon as possible once payment receipt.

Packing & Shipping of Copper Oxide CuO Powder

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