Database of Zeolite Structures
 

Framework Type *-SVY
Type Material
  Material Name: SSZ-70    
 
Chemical Formula:
 
[Si142O280(OH)8]- *-SVY
 
   
Unit Cell:
 
hexagonal

 P 63/m m c (# 194)
    a' = 14.2270Å b' = 14.2270Å c' = 49.8060Å  
    α' = 90.000 ° β' = 90.000° γ' = 120.000°  
   
Framework density:
 
16.3 T/1000 Å3
 
 
Channels:
 
[110] 10 4.4 x 4.9** | ⟂ [001] 14 4.1 x 5.5**
Dimensionality
  Sorption (molecular cross section > 3.4Å): 2-dimensional
  Topological (pore opening > 6-ring): 2-dimensional
   
References:
  Smeets, S., Berkson, Z.J., Xie, D., Zones, S.I., Wan, W., Zou, X., Hsieh M.-F., Chmelka, B.F., McCusker, L.B. and Baerlocher, Ch.
   "Well-defined silanols in the structure of the calcined high-silica zeolite SSZ-70: new understanding of a successful catalytic material"
   J. Am. Chem. Soc., 139, 16803-16812 (2017)
 
 
Name and Code derivation:
    Standard Oil Synthetic Zeolite - seventy
  SSZ-70 (seventy)
  *-SVY
Limiting Rings
 
10-ring within 'layer'
viewed along [110]

partially blocked 14-ring
between 'layers'
viewed normal to [001]