Database of Zeolite Structures
 

Framework Type AFR
Reference Material
  Material Name: SAPO-40    
 
Chemical Formula:		  
|(TPA+)2 (OH)2|2 [Si4Al14P14O64]2-AFR
TPA+ = C12H28N+ = tetrapropylammonium ion
= tetrapropylazanium
SMILES: CCC[N+](CCC)(CCC)CCC   Images:  stick or 3D		  
   
Unit Cell:§ 		 
orthorhombic
 P c c n (# 56)
    a' = 21.9440 Å b' = 13.6910 Å c' = 14.2490 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
(Relationship to unit cell of Framework Type: a' = a, b' = b, c' = 2c)
   
Framework Density: 		 
15.0 T/1000 Å3
 
  
Channels: 		 
[001] 12 6.7 x 6.9* <-> [010] 8 3.7 x 3.7*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 2-dimensional
  Topological (pore opening > 6-ring): 2-dimensional
   
References:
  Estermann, M.A., McCusker, L.B. and Baerlocher, Ch.
  "Ab initio Structure Determination from Severely Overlapping Powder Diffraction Data"
J. Appl. Crystallogr., 25, 539-543 (1992)
Material name:   SAPO-40
Chemical formula:   [Si4Al14P14O64]2-AFR
  § McCusker, L.B. and Baerlocher, Ch.
  "A re-examination of the structure of SAPO-40"
Microporous Materials, 6, 51-54 (1996)
  Dumont, N., Gabelica, Z., Derouane, E.G. and McCusker, L.B.
  "Characterization and Rietveld refinement of the large pore molecular sieve SAPO-40"
Microporous Materials, 1, 149-160 (1993)
Material name:   SAPO-40
Chemical formula:   [Si4Al14P14O64]2-AFR
 
  
Name and Code derivation:
    Silico-Aluminophosphate-forty
  SAPO-40 (forty)
  AFR
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
 
12-ring viewed along [001]

8-ring viewed along [010]


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