Enhancement of Resistance against Oxidation with Carbon Dioxide for Formed Coke and Electrode-grade Graphite and Carbon by Infiltrating Carbon into Pores

Abstract

Formed coke, electrode-grade graphite (E.G.) and elctrode-grade carbon (E.C.) were modified by infiltrating carbon within the pores by use of methane cracking. The rate of oxidation with CO₂ was lowered for all these samples but the amount of reduction was dependent on pore structures. Decrease in the rate for the electrode-grade carbon was very large compared to other samples. The mechanism of enhancement of resistance against oxidation was explained in terms of the pore structure changes accompanying infiltration and oxidation.