Database of Zeolite Structures
 

Framework Type UWY
Reference Material
  Material Name: IM-20    
 
Chemical Formula:
 
|(H2O)10.3| [Si42.2Ge17.8O120]-UWY
 
   
Unit Cell:
 
orthorhombic

 P m m m (# 47)
    a' = 25.1611 Å b' = 12.7013 Å c' = 11.6001 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
   
Framework Density:
 
16.2 T/1000 Å3
 
 
Channels:
 
{[001] 12 6.1 x 7.6* <-> [010] 10 5.0 x 5.7*} <-> [100] 10 5.4 x 5.8* <-> {[001] 10 5.1 x 5.8* <-> [010] 10 5.0 x 5.0*}
Dimensionality
  Sorption (molecular cross section > 3.4Å): 3-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Dodin, M., Paillaud, J.-L., Lorgouillous, Y., Caullet, P., Elkaim, E. and Bats, N.
  "A zeolitic material (IM-20) with a 3D pore system formed by straight 12- and 10-ring channels synthesized with imidazolium derivative as structure directing agent"
J. Am. Chem. Soc., 132, 10221-10223 (2010)
 
 
Name and Code derivation:
    Institut Français du Pétrole and University of Mulhouse - twenty
  IM-20, Mulhouse (twenty)
  UWY
Limiting Rings
 
12-ring viewed along [001]

10-ring viewed along [010]

10-ring viewed along [100]

10-ring viewed along [001]

2nd 10-ring viewed along [010]