The nickel oxide (Ⅱ) is a kind of common inorganic compounds, is bivalent nickel oxide, chemical formula for NiO, green powder, widely used in life, is also used for preparing high purity (> 99.98% nickel). This product is harmful to human health, the need to take care of the protection when contacting, the risk that the human body may have carcinogenic to sensitization.
The internal structure of oxidized nickel causes the carrier to be unable to flow, causing it to be insulator and not conductive.
In addition, the physical properties of the nickel oxide also along with the change of preparation of temperature change, with the temperature increasing of preparation, its density and resistance to increase, lower solubility and catalytic activity.
Crystal structure of cubic crystal system, NiO crystal structure is similar to sodium chloride, rock salt structure, in which each Ni around six O recent distance, oxygen atoms to form is octahedron, nickel atoms at its center; And vice versa, oxygen atoms are in the octahedron that is formed by nickel atoms. The whole crystal can be thought of as the Ni with the square of the cube and the same as the other.
No comments:
Post a Comment