Ermittlung thermodynamischer Daten von Doppeloxidbildungen aus Gleichgewichtsmessungen

Assessment of thermodynamic data for CuCrO2 delafossite from calorimetric measurements

“…The same year, Vlach et al [17] performed similar measurements, and included an extensive review of Gibbs energy values for the formation reaction of CuCrO 2 . Among the twelve studies they reported for the CuCrO 2 phase, their emf values, the values of Jacob et al [16] and the derived function obtained by Schmahl and Minzl [18] are in good agreement. The applicative interest of the CuCrO 2 phase also favored studies of the low-temperature heat capacity, magnetization, and resistivity.…”

Solid-State Displacement Reaction between Chromium and Cuprous Oxide

“…The equilibrium oxygen partial pressures of Cu2O/CuO, Cu/Cu2O and Cr/Cr2O3 were calculated from the Gibbs' energy changes of their equilibriating reactions (17). The equilibrium oxygen partial pressures of CuCr2O4/CuCrO2/Cr2O3 and Cu/CuCrO2/ Cr2O3 were calculated from the reported values by Jacob et al (18) for their three-phase equilibriating reactions, since the reported values by Schmahl et al (19), Rosen(20), Jacob et al (18) and Vlach et al (21) are in agreement with one another. It is assumed in this analysis that CuCr2O4 and CuCrO2 are stoichiometric compounds.…”

Interplay of thermochemistry and Structural Chemistry, the journal (volume 21, 2010) and the discipline

“…Consider now the simpler, i.e., uncomplexed, CuCrO 4 . Comparison of its enthalpy of formation with the other mixed copper chromium oxides, Cu 2 Cr 2 O 4 , and CuCr 2 O 4 [95] is welcomed; a study of their Gibbs energies has been reported [96].…”