Database of Zeolite Structures
 

Framework Type ATO
Reference Material
  Material Name: AlPO-31    
 
Chemical Formula:		  
[Al18P18O72]-ATO		  
   
Unit Cell: 		 
trigonal
 R -3 (# 148)
    a' = 20.8270 Å b' = 20.8270 Å c' = 5.0030 Å  
    α' = 90.000° β' = 90.000° γ' = 120.000°  
   
Framework Density: 		 
19.2 T/1000 Å3
 
  
Channels: 		 
[001] 12 5.4 x 5.4*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 1-dimensional
   
References:
  Bennett, J.M. and Kirchner, R.M.
  "The Structure of Calcined AlPO4-31 - A New Framework Topology Containing One-Dimensional 12-Ring Pores"
Zeolites, 12, 338-342 (1992)
  Baur, W.H., Joswig, W., Kassner, D. and Kornatowski, J.
  "Structure of SAPO-31 Refined from Single-Crystal Diffraction Data: Substitution of P by Si Established by Diffraction Methods"
Acta Crystallogr., B50, 290-294 (1994)
Material name:   AlPO-31
Chemical formula:   [Al18P18O72]-ATO
 
  
Name and Code derivation:
   
  AlPO4-31 (thirty-one)
  ATO
Limiting Rings
 
12-ring viewed along [001]


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