Chemical composition: [Al20P20 O80] -AEL
Pore structure: [001] 10 4.0 x 6.5 * (1-dimensional)
SAPO-11 molecular sieve has AEL structure, orthorhombic, space group Ima2. Its skeleton mainly by A1O2-, PO2 +, SiO2 tetrahedra formed intertwined with oval ten yuan ring one-dimensional straight channel.
Pore diameter (nm) 0.6-0.7
Silica-alumina ratio of SiO2 / P2O5 / Al2O3 = 0.5-0.8: 1: 1
BET specific surface area (m2 / g) ≥180
The relative degree of crystallinity (%) ≥95
Residual sodium (%) ≤0.1
Loss on ignition (%) ≤5
