Database of Zeolite Structures
 

Framework Type ITW
Reference Material
  Material Name: ITQ-12    
 
Chemical Formula:
 
[Si24O48]-ITW
 
   
Unit Cell:§
 
monoclinic

 C 1 m 1 (# 12)
    a' = 10.3304 Å b' = 15.0100 Å c' = 8.8600 Å  
    α' = 90.000° β' = 105.340° γ' = 90.000°  
   
Framework Density:
 
18.1 T/1000 Å3
 
 
Channels:
 
[100] 8 2.4 x 5.4* <-> [001] 8 3.9 x 4.2*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 2-dimensional
   
References:
  Barrett, P.A., Boix, T., Puche, M., Olson, D.H., Jordan, E., Koller, H. and Camblor, M.A
  "ITQ-12: a new microporous silica polymorph and its potential for light hydrocarbon separations"
Chem. Commun., , 2114-2115 (2003)
Material name:   ITQ-12
Chemical formula:   [Si24O48]-ITW
  § Yang, X.B., Camblor, M.A., Lee, Y., Liu, H.M. and Olson, D.H.
  "Synthesis and crystal structure of as-synthesized and calcined pure silica zeolite ITQ-12"
J. Am. Chem. Soc., 126, 10403-10409 (2004)
 
 
Name and Code derivation:
    Instituto de Tecnologia Quimica Valencia - twelve
  ITQ-12 (twelve)
  ITW
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
 
8-ring viewed along [100]

8-ring viewed along [001]