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Journal for dingxinda9Journal for dingxinda9
Jun
24
Tongue
How is activated carbon composed?

Activated carbon also known as activated carbon black, is black powder or block, granular, honeycomb-like amorphous carbon, but also arranged regular crystal carbon. In addition to carbon elements, activated carbon contains two kinds of admixtures: one is chemically bound elements, mainly oxygen and hydrogen, which remain in carbon due to incomplete carbonization; the other is ash, which is the inorganic part of activated carbon; and ash powder is the main cause of secondary pollution caused by activated carbon.

Structure of activated carbon

Activated carbon has microcrystalline structure, but the arrangement is completely irregular. The crystallite height is 0.9~1.2 nm, the width is about 2.0~2.3nm. Its size is significantly increased by high temperature treatment. In general, activated carbon produces micropores, transition pores or macropores during activation.

We need to know how activated carbon adsorbs

Depending on its own unique pore structure:The internal pore structure of activated carbon is developed, there are a large number of invisible micropores in the naked eye, and the micropores in 1 gram of activated carbon material can be as high as 800-1500 square meters after spreading, and the special purpose is higher. It is these highly developed, such as human capillary pore structure, so that activated carbon has excellent adsorption performance.

Interaction between molecules:molecules have mutually attractive forces, when a molecule is captured by the activated carbon inner pores into the activated carbon inner pores, because of the mutual attraction between molecules, will cause more molecules to be continuously attracted until filled with the activated carbon inner pores.
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