Database of Zeolite Structures
 

Framework Type -IRY
Reference Material
  Material Name: ITQ-40    
 
Chemical Formula:		  
|F8| [Ge54.7Si21.3O150(OH)4]--IRY		  
   
Unit Cell: 		 
hexagonal
 P 63/m m c (# 194)
    a' = 16.4690 Å b' = 16.4690 Å c' = 32.1920 Å  
    α' = 90.000° β' = 90.000° γ' = 120.000°  
   
Framework Density: 		 
10.1 T/1000 Å3
 
  
Channels: 		 
[001] 16 9.5 x 10.4* <-> [001] 15 9.6 x 9.7*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Corma, A., Díaz-Cabañas, M.J., Rey, F., Afeworki, M., Dorset, D.L., Soled, S.L., Strohmaier, K.G.
  "A new extra-large pore zeolite (ITQ-40) with the lowest framework density containing doube four and double three-rings"
Proc. Natl. Acad. Sci., 107, 13997-14002 (2010)
Material name:   ITQ-40, partially calcined
Chemical formula:   [Ge32.4Si43.6O150(OH)4]--IRY
  Zou, X.D.
  "single-crystal refinement using SQUEEZE"
private communication, , (2013)
 
  
Name and Code derivation:
    Instituto de Tecnologia Quimica Valencia - forty
  ITQ-40 (forty))
  -IRY
Limiting Rings
 
16-ring viewed normal to [001]

15-ring viewed along [001]


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