Catalysis Letters

, Volume 8, Issue 2–4, pp 185–192 | Cite as

A comparison of the thermal stabilities Ga13, GaAl12 and Al13-pillared clay minerals

  • Susan M. Bradley
  • Ronald A. Kydd


A comparison has been made of the thermal stabilities of pillared clays prepared through the intercalation of Ga13, Al13 and GaAl12 polyoxocations by STx-1 montmorillonite. The stabilities, as revealed through differential thermal analyses, powder X-ray diffraction and surface area studies, were found to increase in the order Ga13-PILC < Al13-PILC < GaAl12-PILC. This is in agreement with the order of the stabilities of these polyoxocations in solution, which also correlates with their relative degrees of symmetry, as previously revealed by NMR studies.


Pillared clays PILC polyoxocations tridecamers catalysis Al13 GaAl12 Ga13 


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Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1991

Authors and Affiliations

  • Susan M. Bradley
    • 1
  • Ronald A. Kydd
    • 1
  1. 1.Department of ChemistryUniversity of CalgaryCalgaryCanada

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