Ga13, GaAl12, and Al13 Polyoxocations and Pillared Clays

  • Susan M. Bradley
  • Ronald A. Kydd
  • Raghav Yamdagni
  • Colin A. Fyfe


Studies of the hydrolysis of aqueous gallium and mixed gallium/aluminum solutions have resulted in the synthesis of Ga13 and GaAl12 cations which are isostructural with the Al13 species which has been the principal ion utilized in clay mineral pillaring studies. These ions have been characterized through the use of solution NMR studies, as well as MAS NMR, powder X-ray diffraction and infrared investigations of their sulfate salts. Their relative stabilities in solution have been found to follow the order Ga13 « Al13 « GaAl12, which also appears to correlate with the order of increasing symmetry of their overall structures.


Clay Mineral Microporous Material Pillared Clay All3 Species Bronsted Acid Site 


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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • Susan M. Bradley
    • 1
  • Ronald A. Kydd
    • 1
  • Raghav Yamdagni
    • 1
  • Colin A. Fyfe
    • 2
  1. 1.Department of ChemistryUniversity of CalgaryCalgaryCanada
  2. 2.Department of ChemistryUniversity of British ColumbiaVancouverCanada

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