Electrochemical determination of the standard Gibbs free energy change of the graphite-Oxygen reactions

摘要

A calcia doped zirconia solid oxide electrolyte galvanic cell was investigated in the temperature range of 700-950[deg]C to directly and more accurately measure the standard Gibbs free energy change of the following reactions: CO(g) + 1/2O2(g) = CO2(g)C(graphite) + CO2(g) = 2 CO(g). The results obtained in the present investigation are well within the scatter band of the calorimetric and spectroscopic data.