MEASUREMENT OF THE THERMODYNAMIC PROPERTIES OF Fe2Ti3O9 AND Fe2Ti05
(Department of Nonferrous Metals，Northeastern University，Shenyang 110006)
Abstract: The thermodynamic properties of Fe2Ti309 and Fe2TiO5 were measured by means of the following solid state electrolyte cells:
Pt，Fe+“Fe0”‖ZrO2 (CaO)‖FeTiO3+Fe2Ti3O9+Fe2O3，Pt
Pt, Fe+“Fe0”‖ZrO2(CaO)‖FeTiO3+Fe2TiO5+TiO2，Pt
From the experimental data，the Gibbs energies of formation of Fe2Ti3O9 and Fe2TiO5 were obtained:
△G0pr (kJ .mol-1)= -3459.7-0.847T，(1053 K＜T＜l153K)
△G0pb (kJ .mol-1) =-1700.2-0.465T，(1173K＜T＜1273K)
Experimental results fit approximately to those of estimation.
Pt，Fe+“Fe0”‖ZrO2 (CaO)‖FeTiO3+Fe2Ti3O9+Fe2O3，Pt
Pt, Fe+“Fe0”‖ZrO2(CaO)‖FeTiO3+Fe2TiO5+TiO2，Pt
From the experimental data，the Gibbs energies of formation of Fe2Ti3O9 and Fe2TiO5 were obtained:
△G0pr (kJ .mol-1)= -3459.7-0.847T，(1053 K＜T＜l153K)
△G0pb (kJ .mol-1) =-1700.2-0.465T，(1173K＜T＜1273K)
Experimental results fit approximately to those of estimation.
Key words: Fe2Ti3O9 Fe2TiO5 thermodynamic property solid state electrolyte cell