Chromium – Copper – Oxygen

Assessment of thermodynamic data for CuCrO2 delafossite from calorimetric measurements

“…2 . The 14 emf data of [14,15] are related to the following electrochemical cell: [19] and experimental data [20]. agreement with experimental data from the literature [46].…”

“…2 takes into account high temperature emf data from [14,15], from which we derived values of Gibbs energy of formation°G CuCrO ( ) f T…”

“…However, limited thermodynamic data for CuCrO 2 are available in the literature. As evidenced by Perrot in his review of the Cu-Cr-O system in 2010 [15], there is a strong lack of experimental information such as heat capacity, entropy, and enthalpy for CuCrO 2 , at room temperature and above. At high temperature, two systematics studies were performed on the Cr-Cu-O system by emf method.…”

Thermodynamic and Structural Properties of CuCrO2 and CuCr2O4: Experimental Investigation and Phase Equilibria Modeling of the Cu–Cr–O System

“…This work considers the equilibria between the stable phases of the Cr–Cu–O chemical system at atmospheric pressure and in a large temperature range that includes the high-temperature liquid phase. Apart from the simple components (pure elements and simple oxides), and according to Perrot’s literature review published in 2010, this system contains three stable mixed oxide phases, which are of high applicative interest in various areas.…”

“…A compilation of the published temperatures for the invariants of the Cr–Cu–O system, in air ( p O 2 = 0.21 atm) and/or pure oxygen ( p O 2 = 1 atm), is presented in Table . As highlighted in Perrot’s review, the invariant reaction temperatures have been measured by many authors, with large discrepancies between some of them (e.g., formation temperature of CuCrO 2 from CuCr 2 O 4 and CuO).…”