A mathematical model that describes the conversion and the temperature profile trough time of a copper-based oxygen-carrier particle was developed. The model describes the reaction rate based on an initial distribution of grain, permitting a better adjustment to the experimental data than the classic changing grain size model and it can be used to modeling the chemical looping combustion process at real scale. On other hand, two oxygen carriers were synthesized using wet-impregnation and incipient impregnation techniques, and they were characterized with scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), BET superficial area, porosimetry, and X-ray diffraction (XRD). Kinetic parameters of the synthesized materials were calculated by thermogravimetry.