Standard Enthalpy of Formation of CuAl₂O₄ Revisited

Abstract

Due to discrepancy in the standard enthalpy of formation, , of copper(II) aluminate (CuAl₂O₄) reported in thermodynamic databases, the calculated reaction enthalpy, ΔH_r, of CuAl₂O₄ with reducing gases varies considerably. In this work, the standard enthalpy of formation, , of CuAl₂O₄ is reassessed using the reaction enthalpy, ΔH_r, of CuAl₂O₄ with CO measured by differential scanning calorimetry. A value of −1824.4 ± 4.1 kJ/mol was found for the standard enthalpy of formation, , of CuAl₂O₄.

Keywords:

• Copper(II) aluminate (CuAl₂O₄)
• Differential scanning calorimetry (DSC)
• Standard enthalpy of formation
• Thermogravimetric (TG) analysis

Acknowledgments

Special thanks go to Professor Vratislav Langer (Chalmers University of Technology) for fruitful discussions.