Database of Zeolite Structures
 

Framework Type ITT
Reference Material
  Material Name: ITQ-33    
 
Chemical Formula:		  
[Si19.98Ge26.02O92]-ITT		  
   
Unit Cell: 		 
hexagonal
 P 6/m m m (# 191)
    a' = 19.3095 Å b' = 19.3095 Å c' = 11.5130 Å  
    α' = 90.000° β' = 90.000° γ' = 120.000°  
   
Framework Density: 		 
12.4 T/1000 Å3
 
  
Channels: 		 
[001] 18 12.3 x 12.3* <-> <100> 10 4.9 x 5.8**
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
 
Stability:		  
stable to calcination in a dry atmosphere
   
References:
  Liu, L., Yu, Z.-B., Chen, H., Deng, Y., Lee, B.-L. and Sun, J.
  "Disorder in extra-large pore zeolite ITQ-33 revealed by single crystal XRD"
Crystal Growth & Design, 13, 4168-4171 (2013)
  Corma, A., Díaz-Cabañas, M.J., Jorda, J.L., Martinez, C. and Moliner, M.
  "High-throughput synthesis and catalytic properties of a molecular sieve with 18- and 10-member rings"
Nature, 443, 842-845 (2006)
Material name:   ITQ-33
Chemical formula:   [Si19.98Ge26.02O92]-ITT
 
  
Name and Code derivation:
    Instituto de Tecnologia Quimica Valencia - thirty-three
  ITQ-33 (thirty-three)
  ITT
Limiting Rings
 
18-ring viewed along [001]

10-ring viewed along <100>


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