Database of Zeolite Structures
 

Framework Type AEI
Reference Material
  Material Name: AlPO-18    
 
Chemical Formula:
 
[Al24P24O96]-AEI
 
   
Unit Cell:
 
monoclinic

 C 1 2/c 1 (# 63)
    a' = 13.7110 Å b' = 12.7320 Å c' = 18.5710 Å  
    α' = 90.000° β' = 90.010° γ' = 90.000°  
   
Framework Density:
 
14.8 T/1000 Å3
 
 
Channels:
 
{[100] 8 3.8 x 3.8 <-> [110] 8 3.8 x 3.8 <-> [001] 8 3.8 x 3.8}***
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Simmen, A., McCusker, L.B., Baerlocher, Ch. and Meier, W.M.
  "The structure determination and Rietveld refinement of the aluminophosphate AlPO4-18"
Zeolites, 11, 654-661 (1991)
DOI: 10.1016/S0144-2449(05)80167-8
 
 
Name and Code derivation:
    Aluminophosphate-eighteen
  AlPO4-18 (eighteen)
  AEI
Limiting Rings
 
8-ring viewed along [100]

8-ring viewed along [110]

8-ring viewed along [001]