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Thermodynamic Properties and Stability of In‐Doped SrCeO 3 Proton‐Conducting Ceramics
Author(s) -
Matskevich Nata I.,
Wolf Thomas,
Chupakhina Tatiana I.
Publication year - 2011
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201000504
Subject(s) - chemistry , standard enthalpy of formation , calorimetry , enthalpy , zirconium dioxide , decomposition , standard enthalpy change of formation , inorganic chemistry , solvent , thermochemistry , enthalpy change of solution , gibbs free energy , zirconium , chemical stability , thermodynamics , organic chemistry , chemical engineering , physics , engineering
The standard enthalpy of formation of SrCe 0.5 In 0.5 O 2.75 has been determined by solution calorimetry by combiningthe solution enthalpies of SrCe 0.5 In 0.5 O 2.75 and a SrCl 2 + 0.5CeCl 3 + 0.5InCl 3 mixture in 1.0 M HCl with KI as a solvent at 298.15 K and literature data. The results show that SrCe 0.5 In 0.5 O 3– δ is thermodynamically stable with respect to decomposition to binary oxides. Calculation of the Gibbs energies for the interaction of SrCe 0.5 In 0.5 O 2.75 with aluminum oxide and zirconium dioxide allows one to predict that SrCe 0.5 In 0.5 O 2.75 does not react with Al 2 O 3 or ZrO 2 at ambient temperatures.