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Characteristic of graphite

2019-01-15 点击量:3265

Characteristic of graphite

 

At room temperature, the chemical properties of elemental carbon are relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents; it reacts with oxygen at different temperatures to produce carbon dioxide or carbon monoxide; only fluorine can react directly with elemental carbon in halogen; under heating, elemental carbon is more easily oxidized by acid; at high temperature, carbon can react with many metals to form metal carbides. Carbon is reducible and can be used to smelt metals at high temperatures.
Graphite is a crystalline mineral of carbonaceous elements. Its crystal lattice is a hexagonal layered structure. The distance between each network layer is 340 pm, and the distance between carbon atoms in the same network layer is 142 pm. It belongs to the hexagonal system with complete lamellar cleavage. The cleavage surface is mainly composed of molecular bonds and has weak attraction to molecules, so its natural floatability is very good.
Graphite, diamond, carbon 60 and carbon nanotubes are the elements of carbon, and they are allotropic to each other.