Calculation of the formation enthalpies, standard entropies, and standard heat capacities of alkali and alkaline-earth germanates

Evaluation of thermodynamic properties of alkaline borogermanates and germanosilicates using the regression analysis method

“…I. In order to assess the thermodynamic properties of borogermanates and germanosilicates, we previously obtained the dependencies of entropy, formation enthalpy and heat capacity on the composition for alkaline silicates, borates, and germanates [19,20].…”

“…However, in addition to heat capacity, physicochemical modelling requires information on other thermodynamic potentials, such as entropy, formation enthalpy and Gibbs energy, which cannot be obtained directly via NKR. As shown in our previous works [19,20], the regression analysis method can be successfully used to calculate the heat capacity, entropy and enthalpy of formation, from which it is already possible to calculate the Gibbs energy. The advantage of regression analysis compared to NKR is that it can be used to work with a large number of initial experimental data, allowing the overall calculation error to be reduced.…”