Database of Zeolite Structures
 

Framework Type AFX
Reference Material
  Material Name: SAPO-56    
 
Chemical Formula:
 
|H3| [Al23Si5P20O96]-AFX
 
   
Unit Cell:§
 
trigonal

 P -3 1 c (# 194)
    a' = 13.7620 Å b' = 13.7620 Å c' = 19.9490 Å  
    α' = 90.000° β' = 90.000° γ' = 120.000°  
   
Framework Density:
 
14.7 T/1000 Å3
 
 
Channels:
 
[001] 8 3.4 x 3.6***
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  McGuire, N.K., Blackwell, C.S., Bateman, C.A., Wilson, S.T. and Kirchner, R.M.
private communication, , (1994)
Material name:   SAPO-56
Chemical formula:   [Al23Si5P20O96]-AFX
  § Wilson, S.T., Broach, R.W., Blackwell, C.S., Bateman, C.A., McGuire, N.K. and Kirchner, R.M.
  "Synthesis, characterization and structure of SAPO-56, a member of the ABC double-six-ring family of materials with stacking sequence AABBCCBB"
Microporous Mesoporous Mat., 28, 125-137 (1999)
 
 
Name and Code derivation:
    Silico-Aluminophosphate-fifty-six
  SAPO-56 (fifty-six)
  AFX
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
 
8-ring viewed normal to [001]