Database of Zeolite Structures
 

Framework Type LTA
Reference Material
  Material Name: Linde Type A (zeolite A)    
 
Chemical Formula:
 
|Na12 (H2O)278 |8 [Al12Si12O48]8-LTA
 
   
Unit Cell:§
 
cubic

 F m -3 c (# 221)
    a' = 24.6100 Å b' = 24.6100 Å c' = 24.6100 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
(Relationship to unit cell of Framework Type: a' = 2a)
   
Framework Density:
 
12.9 T/1000 Å3
 
 
Channels:
 
<100> 8 4.1 x 4.1***
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Reed, T.B. and Breck, D.W.
  "Crystalline zeolites. II. Crystal structures of synthetic zeolite, type A"
J. Am. Chem. Soc., 78, 5972-5977 (1956)
Material name:   Linde Type A (zeolite A)
Chemical formula:   [Al12Si12O48]8-LTA
  § Gramlich, V. and Meier, W.M.
  "The crystal structure of hydrated NaA: A detailed refinement of a pseudosymmetric zeolite structure "
Z. Kristallogr., 133, 134-149 (1971)
 
 
Name and Code derivation:
    Zeolite A (Linde Division, Union Carbide)
  Linde Type A
  LTA
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
 
8-ring viewed along <100>