Database of Zeolite Structures
 

Framework Type IWR
Reference Material
  Material Name: ITQ-24    
 
Chemical Formula:
 
[Si48.3Ge5.1Al2.6O112]-IWR
   
Unit Cell:
 
orthorhombic

 C m m m (# 65)
    a' = 21.2549 Å b' = 13.5210 Å c' = 12.6095 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
   
Framework Density:
 
15.5 T/1000 Å3
 
 
Channels:
 
{[001] 12 5.8 x 6.8 <-> [100] 10 4.6 x 5.3 <-> [010] 10 4.6 x 5.3}***
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
    Note:
The 10-ring shown on the right (viewed along [010]) limits the channel dimensions of both 10-ring channels (along [100] and along [010].
   
References:
  Castaneda, R., Corma, A., Fornes, V., Rey, F. and Rius, J.
  "Synthesis of a new zeolite structure ITQ-24, with intersecting 10- and 12-membered ring pores"
J. Am. Chem. Soc., 125, 7820-7821 (2003)
 
 
Name and Code derivation:
    Instituto de Tecnologia Quimica Valencia - twenty-four
  ITQ-24 (twenty-four)
  IWR
Limiting Rings
 
12-ring viewed along [001]

10-ring viewed along [010]