Extended data:
Activated carbon consists of graphite microcrystals, single-plane reticulated carbon and amorphous carbon, in which graphite microcrystals are the main part of activated carbon. The microcrystalline structure of activated carbon is different from that of graphite, and the interlayer spacing of its microcrystalline structure is between 0.34 and 0.35 nm, with a large gap. Even if the temperature is above 2000℃, it is difficult to convert it into graphite. This microcrystal structure is called non-graphite microcrystal, and most activated carbon belongs to non-graphite structure. The microcrystals of graphite structure are arranged regularly and can be converted into graphite after treatment. Non-graphite microcrystalline structure makes activated carbon have developed pore structure, and its pore structure can be characterized by pore size distribution.
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