Table 1 Main crystallographic sites in faujasites and correspondent number of atoms.

From: The effect of positioning cations on acidity and stability of the framework structure of Y zeolite

S1

S2

S3

S4

S5

–

20.2 Na

32 H 2 O

0.8 La

5.0 La

9.8 Al

10.4 La

32 H2O

20.2 Na

–

  1. Adapted from46.
  2. Italic: before calcination.
  3. Normal: after calcination.
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