The substance containing nickel and having catalytic function is called nickel catalyst. Nickel is a silver-white metal. Nickel is more reactive chemically but more stable than iron. It is difficult to oxidize in air at room temperature. When heated, nickel can be oxidized to form nickel oxide, which has excellent catalytic activity and is one of the nickel catalysts. Nickel is widely distributed in the earth's crust, so the variety of nickel catalysts is abundant and the price is low.
Figure 1. Nickel catalysts
Nickel catalysts are widely used in chemical industry and environmental protection field because of their advantages of high mechanical strength, good catalytic activity, simple preparation and low price.
Figure 2. Nickel catalyst catalyzed hydrocyanation reaction