The Activities of Activated Carbon Fibers from Ethylene Tar Pitch and Cellulose

The activities of activated carbon fibers(ACFs) from ethylene tar pitch (ETP) and cellulose were examined for the oxidative conversion of SO2 into aq. H2SO4 in the presence of O2 and H2O. The results indicated that Cellulose ACF showed much higher activity than ETP ACF, owning to higher ability of SO2 adsorption, higher catalytic activity for the oxidation of SO2 to SO3 and larger amount of H2O adsorption, enhanced catalytic activity for the oxidation of SO2 to SO3 showed highest among these abilities. These in turn depend on nitrogencontaining group and some oxygen-containing group in the surface of cellulose ACF, so the SO2 removal activity of ACFs is affected by functional groups.