Database of Zeolite Structures
 

Framework Type EWO
Reference Material
  Material Name: ECNU-21    
 
Chemical Formula:
 
[Si23.3Ge0.7O48]-EWO
 
   
Unit Cell:
 
orthorhombic

 C 2 2 2 (# 21)
    a' = 13.7419 Å b' = 17.1660 Å c' = 5.0296 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
   
Framework Density:
 
20.2 T/1000 Å3
 
 
Channels:
 
[001] 10 4.6 x 5.4
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 1-dimensional
   
References:
  Liu, X., Mao, W., Jiang, J., Lu, X., Peng, M., Xu, H., Han, L., Che, S. and Wu, P.
  "Topotactic Conversion of Alkali-Treated Intergrown Germanosilicate CIT-13 into Single-Crystalline ECNU-21 Zeolite as Shape-Selective Catalyst for Ethylene Oxide Hydration"
Chem. Eur. J., 25, 4520-4529 (2019)
DOI: 10.1002/chem.201900173
 
 
Name and Code derivation:
    East China Normal University - twenty-one
  ECNU-21 (twenty-one)
  EWO
Limiting Rings
 
10-ring viewed along [001]