Gibbs free energy of formation of solid SnFe2O4
| Autor: | Z. Panek, K. Fitzner |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Chemical substance
Oxide Thermodynamics Electrolyte Atmospheric temperature range Condensed Matter Physics Standard enthalpy of formation Gibbs free energy Electrochemical cell chemistry.chemical_compound symbols.namesake chemistry Phase (matter) symbols Physical and Theoretical Chemistry Instrumentation |
| Zdroj: | Thermochimica Acta. 78:261-267 |
| ISSN: | 0040-6031 |
| DOI: | 10.1016/0040-6031(84)87151-8 |
| Popis: | Employing the electrochemical cell with the solid oxide electrolyte Sn, SnO2|O2−|air (pO2 = 0.21 atm) The Gibbs free energy of formation of solid SnO2 was determined over the temperature range 923–1173 K ΔG0f,SnO2 = −578 500 + 205.64 T J mol−1 Next, using the cell Sn, FeO, SnFe2O4|O2− |Fe, FeO The Gibbs free energy of formation of solid SnFe2O4 from the respective oxides was established over the temperature range 873–1123 K Δ0f,SnFe2O4 = − 51040 + 44.01 T J mol−1 The presented results are applied to determine the phase relations in the FeSnO system at 1073 K, which are confirmed by the phase equilibrium investigations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|