Materials for Chemical-Looping with Oxygen Uncoupling

Figure 5

The partial pressure of gas-phase O₂ over the metal oxide systems (a) CuO/Cu₂O and Co₃O₄/CoO and (b) Mn₂O₃/Mn₃O₄ and (Mn_0.8Fe_0.2)₂O₃/(Mn_0.8Fe_0.2)₃O₄ as a function of temperature.

(a)

(b)