Page 187 - Adsorbents fundamentals and applications

172 ZEOLITES AND MOLECULAR SIEVES

Table 7.1. Structures and aperture sizes of A1PO-n
molecular Sieves
∗
n IZA Structure Pore Diameter/nm
∗∗
Code (Ring )
Large Pore
5 AFI 0.73 (12)
36 ATS 0.75 × 0.65 (12)
37 FAU 0.74 (12)
40 AFR 0.43 × 0.70 (10)
46 AFS 0.64 × 0.62 (12)
0.4 (8)

Intermediate Pore
11 AEL 0.63 × 0.39 (10)
31 ATO 0.54 (12)
41 AFO 0.43 × 0.7 (10)
Small Pore
14 0.38 (8)
17 ERI 0.36 × 0.51 (8)
18 AEI 0.38 (8)
26
33 ATT 0.42 × 0.46 (10)
34 CHA 0.38 (8)
35 LEV 0.36 × 0.48 (8)
39 ATN 0.4 (8)
42 LTA 0.41 (8)
43 GIS 0.31 × 0.45 (8)
44 CHA 0.38 (8)
47 CHA 0.38 (8)

Very Small Pore
16 AST (6)
20 SOD (6)
25 ATV 0.30 × 0.49 (8)
28

Very Large Pore
8 AET 0.79 × 0.87 (14)
VPI-5 VFI 1.21 (18)
∗ International Zeolite Association.
∗∗ Number of oxygen atoms in the ring that forms the channel
or window.
From Hartmann and Kevan, 1999, with permission.