| The average mass of elements in wt% | ||||
Samples | Si | O | C | Cr | Fe |
SBA-15 calcined | 55 | 41 | 3 | - | - |
SBA-15 not calcined | 30 | 36 | 34 | - | - |
Fe (6)/Cr(6)-SBA_(C) | 49 | 31 | 2 | 9 | 8 |
Fe (6)/Cr(6)-SBA_(U) | 45 | 37 | 3 | 7 | 6 |
Fe (6)/Cr(6)-SBA_(C) after a catalytic pyrolysis reaction | 31 | 38 | 19 | 4 | 4 |