679560.fig.0011a
(a)
679560.fig.0011b
(b)
Figure 11: The O2 concentration profile of inert cycles for the 5.6% MgO 1300 oxygen carrier; (a) oxygen concentration versus time as a function of temperature and (b) the comparison of oxygen profiles at 950°C before and after 1050°C cycles. Data obtained from the second conducted cycle is presented.