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Line intensities in 27Al-MAS NMR spectra from H-beta-25, H-beta-150, H-beta-300 zeolites.
| Catalysts | Al(IV)a | Al(IV)b | Sum Al(IV) | Al(V) | Al(VI)a | Al(VI)b | Sum Al(VI) | Sum |
|---|---|---|---|---|---|---|---|---|
| H-beta-25 | 1.9 | 15.5 | 17.4 | 6.4 | 0.9 | 11.2 | 12.1 | 35.9 |
| H-beta-150 | 3.8 | 15.1 | 18.9 | 6.8 | 0.5 | 11.9 | 12,4 | 38.2 |
| H-beta-300 | 1.5 | 2.7 | 4.2 | 2.9 | 0.1 | 1.8 | 1.9 | 9.0 |
Al(IV)a and Al(IV)b denote aluminum in tetrahedral sites at 58 and 55 ppm, respectively.
