Lignite was carbonized at 850 degrees C under CO2 for 15 mm, then impregnated with NR3 amines (R = CH2CH2OH or H) and studied for sorption of N-2 and CO2. The carbonization resulted in increasing the specific surface while the impregnation resulted in its decrease. CO2 adsorption capacity decreased from 38.11 cm(3)/g for carbonizate to 28.55 cm(3)/g for NH(CH2CH2OH)(2)-impregnated and to 17,21 cm(3)/g for NH2CH2CH2OH- impregnated carbonizate samples.