Before revision: Activated carbon Activated carbon is a highly porous, amorphous solid consisting of microcrystallites with a graphite lattice, usually prepared in small pellets or a powder.
After revision: The term "adsorption" itself was coined by Heinrich Kayser in 1881 in the context of uptake of gases by URLActivated carbon Activated carbon is a highly porous, amorphous solid consisting of microcrystallites with a graphite lattice, usually prepared in small pellets or a powder.