679560.fig.009a
(a)
679560.fig.009b
(b)
Figure 9: The methane yield as a function of solids conversion for 20 s reduction of 5.6% MgO 1300 oxygen carrier; (a) methane yield versus solid conversion for different temperatures and (b) the comparison of methane conversions at 950°C before and after 1050°C cycles. Data obtained from the second cycle is presented.