Evaluation of Fe-Ni Composite Oxygen Carrier in Coal Chemical Looping Gasification

Figure 7

SEM images of the oxygen carrier before ((a) 0%; (b) 5%; (c) 10%; (d) 15%; (e) 20%) and after gasification ((f) 0%; (g) 5%; (h) 10%; (i) 15%; (j) 20%) and oxidation ((k) 0%; (l) 5%; (m) 10%; (n) 15%; (o) 20%) reaction.