Copper oxide (cupric oxide), chemical formula CuO. It is a black oxide of copper, which also plays an important role in a variety of chemical reactions. By catalyzing the reaction, it can improve the reaction rate and reduce the activation energy of the reaction, thereby improving work efficiency and reducing energy consumption. The heat resistance of copper oxide is very good, its performance is also very stable at high temperatures, and its strength is also very good, and it can maintain stable catalytic performance under high pressure. As a catalyst, copper oxide plays a "bridge" role in chemical reactions, used in the manufacture of rayon, batteries, petroleum desulfurizers, pesticides, ceramics, glazes and enamels, as well as the production of hydrogen and green glass, it can also deal with exhaust gases in the air, can be said to be an outstanding "role" in the environmental community.