Alkaline activation of the donbass coals of different ranks

The effect of the rank of coal (C (daf) = 80-95.2%) on the yield and characteristics of activated carbons prepared under the conditions of alkaline activation (800A degrees C, 1 h, Ar) at KOH/coal ratios of 1 g/g was studied. Under these conditions, the ability of coals to form porous materials decreased in the metamorphic series. Grade D coal (C (daf) = 80%) exhibited a maximum activation ability to form a material with S (BET) = 1560 m(2)/g, V (I ) pound = 0.71 cm(3)/g, and V (mi) = 0.51 cm(3)/g. A minimum activation ability was found in anthracite (C (daf) = 95.2%), which forms activated carbon with poorly developed porosity (S (BET) = 306 m(2)/g, V (I ) pound = 0.15 cm(3)/g, and V (mi) = 0.11 cm(3)/g).