Gaseous Phase Above Ru-O System: A Thermodynamic Data Assessment
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY（2021）
Abstract
The present study is a critical assessment of thermochemical data for gaseous ruthenium oxides based on available experimental data. A full critical analysis and a reinterpretation of data are presented with a proposition for new accurate standard formation enthalpies values: Delta f H degrees 298(RuO4, g) = -197.6 +/- 5.5 kJ mol-1, Delta f H degrees 298(RuO3, g) = -53.0 +/- 10 kJ mol-1, Delta f H degrees 298(RuO2, g) = 158 +/- 20 kJ mol-1 and Delta f H degrees 298(RuO, g) = 301 +/-
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Key words
Thermodynamic data, Ru-O, Gas phase, Entropy, Formation enthalpy, RuO4(g), RuO3(g), RuO2(g), RuO(g), Critical assessment
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