Thermochemical properties of MeCuO2 and Me2CuO3 (Me = Ca, Sr, Ba) mixed oxides
M. Mrovec, J. Leitner, M. Nevriva, D. Sedmidubsky, J. Stejskal.
Thermochimica Acta, 318, 63-70, (1998)
Optimized experimental data and estimated values are utilized for the assessment of thermochemical functions of alkali-earth cuprates. For the determination of temperature dependences of heat capacities the Neumann-Kopp additive rule was employed, Values of standard enthalpy of formation and molar entropy of Ca2CuO3, SrCuO2 , Sr2 CuO3 and BaCuO2 were optimized from experimental results. For the estimation of enthalpies of formation of CaCuO2 and Ba2CuO3 a linear correlation between enthalpy of formation from oxides and ionic radius of alkali-earth cations was used. Molar entropy of CaCuO2 and Ba2 CuO3 was estimated using the modified contribution method.