Study of Thermochemical Transformations of Hydrolytic Lignin and the Properties of the Produced Active Carbons

Abstract

There has been studied the influence of the conditions of heat treatment of hydrolytic lignin and its mixtures with oil slime on the yield, structure and adsorption properties of active carbons (AC). With the increase in the temperature of lignin processing from 400 to 900 ˚C, the yield of active carbon decreases, and its specific surface area and sorption activity reach the maximum values at 800 ˚C. The mutual influence of the components of the mixture of hydrolytic lignin and oil slime during the thermochemical transformations, becomes apparent in the variation of the yield and the porous structure of AC. As for the oil slime, it acts as a binding and structure forming component.