Database of Zeolite Structures
 

Framework Type MEP
Reference Material
  Material Name: Melanophlogite    
 
Chemical Formula:
 
|(CH4,N2,CO2)x| [Si46O92]-MEP
CH4 = CH4 = methane
SMILES: C   Images:  3D
 
   
Unit Cell:
 
cubic

 P m -3 n (# 223)
    a' = 13.4360 Å b' = 13.4360 Å c' = 13.4360 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
(Data refer to structure at 200˚; tetragonal at 25˚C)
   
Framework Density:
 
19.0 T/1000 Å3
 
 
Channels:
 
apertures formed by 6-rings only
Dimensionality
  Sorption (molecular cross section > 3.4Å): 0-dimensional
  Topological (pore opening > 6-ring): 0-dimensional
   
References:
  Gies, H.
  "Studies on clathrasils. III. Crystal structure of melanophlogite, a natural clathrate compound of silica"
Z. Kristallogr., 164, 247-257 (1983)
DOI: 10.1524/zkri.1983.164.3-4.247
 
 
Name and Code derivation:
    Melanophlogite
  MEP