IWR
Framework Type IWR
Type Material
 Material Name: ITQ-24
 Chemical Formula:[Si48.3 Ge5.1 Al2.6O224]-IWR
 Unit Cell:  
  orthorhombicCmmm (# 65)
  a = 21.2549Åb = 13.5210Åc = 12.6095Å
  α = 90.0 °β = 90.0 °γ = 90.0 °
 Framework density: 15.5 T/1000 Å3
 Channels: [001] 12 5.8 x 6.8* <-> [110] 10 4.6 x 5.3* <-> [010] 10 4.6 x 5.3* (3-dimensional)
Note:The 10-ring shown below (viewed along [010]) limits the channel dimensions of both 10-ring channels.
 
 
 
12-ring viewed along [001]
10-ring viewed 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)

Copyright © 2007 Structure Commission of the International Zeolite Association (IZA-SC)