Research Article
Surface Modification of Fly Ash for Active Catalysis
Table 1
EDX analysis of prepared catalysts at different pre-treatment temperatures.
| Catalyst | Pre-treatment temperature (K) | K (at.%) | F (at.%) | Al (at.%) | O (at.%) |
| Fly ash | NIL | 0.09 | NIL | 4.10 | 50.2 | Al2O3/fly ash | 673 K | 0.09 | NIL | 9.2 | 57.6 | KF/fly ash | 473 K | 2.3 | 1.7 | 4.7 | 56.7 | 673 K | 2.7 | 1.8 | 4.8 | 56.9 | 873 K | 2.2 | 1.3 | 4.8 | 56.8 | KF/Al2O3/fly ash | 473 K | 8.5 | 11.3 | 9.2 | 52.4 | 673 K | 9.1 | 12.1 | 9.4 | 51.9 | 873 K | 8.1 | 11.7 | 9.3 | 52.0 | KF/Al2O3 | 473 K | 20.8 | 19.6 | 12.7 | 46.9 | 673 K | 22.1 | 20.8 | 12.9 | 44.2 | 873 K | 18.8 | 17.7 | 17.2 | 46.3 |
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[at.%: atomic percentage].
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