A Thermodynamic Study of Nonstoichiometric Ce_0.97Zr_0.03O_2−δ for Dissociation of H₂O

Abstract

The thermodynamic properties of 3%mol zirconia doped ceria nano-size powders prepared by sol–gel were studied by thermogravity analysis. The entropy and enthalpy extracted from the data of thermogravity experiment of 3%mol zirconia doped ceria compared with undoped ceria were analyzed. The data of Gibbs free energy calculated by the data of entropy and enthalpy of 3%mol zirconia doped ceria compared with undoped ceria and water were investigated. The temperature range and the heat energy required of dissociating water obtained from the data of Gibbs free energy of 3%mol zirconia doped ceria compared with undoped ceria were shown as the result of this study.