Database of Zeolite Structures
 

Framework Type IFR
Reference Material
  Material Name: ITQ-4    
 
Chemical Formula:		  
[Si32O64]-IFR		  
   
Unit Cell: 		 
monoclinic
 I 1 2/m 1 (# 12)
    a' = 18.6520 Å b' = 13.4960 Å c' = 7.6310 Å  
    α' = 90.000° β' = 101.980° γ' = 90.000°  
(Relationship to unit cell of Framework Type: as vectors, a' = a + c, b' = b, c' = -c)
   
Framework Density: 		 
17.0 T/1000 Å3
 
  
Channels: 		 
[001] 12 6.2 x 7.2*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 1-dimensional
   
References:
  Barrett, P.A., Camblor, M.A., Corma, A., Jones, R.H. and Villaescusa, L.A.
  "Structure of ITQ-4, a new pure silica polymorph containing large pores and a large void volume"
Chem. Mater., 9, 1713-1715 (1997)
  Barrett, P.A., Camblor, M.A., Corma, A., Jones, R.H. and Villaescusa, L.A.
  "Synthesis and structure of as-prepared ITQ-4, a large pore silica zeolite: the role and location of fluoride anions and organic cations"
J. Phys. Chem. B, 102, 4147-4155 (1998)
Material name:   ITQ-4
Chemical formula:   [Si32O64]-IFR
 
  
Name and Code derivation:
    Instituto de Tecnologia Quimica Valencia - four
  ITQ-4 (four)
  IFR
Limiting Rings
 
12-ring viewed along [001]


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