ZEOMICS - Zeolite Pore Characterization Web Tool

View Structure: MEI (ZSM-18)

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Number of topological features per unit cell.
AtomsPortalsChannelsCages JunctionsConnections
10212 3441850
Pore size distribution.
% Pore Volume in Features Total Pore Volume
Channel Diameter (Å) Cage Diameter (Å)  
cm3
g
% of Total
Volume
< 44–6> 6 < 66–8> 8 
43 52  4  0.39958
Accessible volume and surface area as a function of molecule size.
Volume (cm3/g) Surface Area (m2/g)
Characteristic Molecule Diam. (Å)  Characteristic Molecule Diam. (Å)
2468  2468
0.3810.2080.208  7053896896
Pore characterization quantities.
Largest Cavity
Diameter (Å)
Pore Limiting
Diameter (Å)
7.57.5
Unit cell parameters.
Space
Group
  Cell Lengths (Å) Cell Angles (deg.)
 abc αβγ
176 13.1113.1115.56  90.090.0120.0
International Tables for Crystallography A (2006).
Coordination sequences.
T-atom NameCoordination Sequence (to Shell 10)
T1491830466394125152183
T24101730466791123153190
T34101626466694114158194
T4491830396798121147189

Citation: Baerlocher, C. and McCusker, L. Database of Zeolite Structures. http://www.iza-structure.org/databases/, 2013. Accessed on April 23, 2013. Framework Type MEI (Material: ZSM-18)

Note: An oxygen radius of 1 Å is used throughout.

Citing ZEOMICS

Please acknowledge use of characterization results from ZEOMICS using the following citation:

First, E. L., Gounaris, C. E., Wei, J., and Floudas, C. A. Computational characterization of zeolite porous networks: an automated approach. Physical Chemistry Chemical Physics, 13(38):17339–17358, 2011.