The application of solid electrolytes to the thermodynamic study of some alkaline earths silicates

Solid electrolytes based on stabilized zirconia (or thoria) cannot be used to the construction of the solid galvanic cells for the study of thermodynamic properties of the alkaline earths silicates. They become a partially electronic conductors of low chemical potentials of oxygen, as those in the coexisting alkaline earths silicate phases.It was attempted to use as the solid electrolyte a mixture of small amounts of alkaline earth fluoride in the corresponding silicate. Then, the solid galvanic cells consisting of such electrolytes were applied to the determination of the standard Gibbs free energies of formation of some magnesium, strontium and barium silicates.