Fig. 12

TEM images and particles size distribution of spent catalysts: (a) spent PCS_SiC media catalyst, (b) spent PCS_Al chips media catalyst, (c) spent SCS_spiral-type catalyst and (d) spent SCS_plate-type catalyst.
TEM images and particles size distribution of spent catalysts: (a) spent PCS_SiC media catalyst, (b) spent PCS_Al chips media catalyst, (c) spent SCS_spiral-type catalyst and (d) spent SCS_plate-type catalyst.