THE EFFECT OF THERMAL MODIFICATION ON THE DEVELOPMENT OF CARBON MATERIAL MICROPOROUS STRUCTURE

A research is done to characterize the microporous structure of outgoing and thermally modified (673 K, 180 min) plant-extracted carbon material. The porous system characteristics are worked out by different methods on low temperature (77K) N₂ adsorption-desorption based isotherm. It is stated that thermal modification contributes to the enlargement of specific surface (from 361 m²/g to 673 m²/g), an increase in total pore volume and an increase in micropore volume (from 0,127 cm³/g to 0,173 cm³/g). Most effectively thermal modification is apt to form nanopores with diameters of 0,75; 1,25 and 4 nm.