Abstract
The thermal stability of two commercial aluminas before and after dry impregnation treatment was studied. One alumina was mesoporous and the other, a spherical material, was non-porous. Characterisation of these materials before and after thermal treatment was performed by XRD, SEM, and measurements of surface area and pore size distribution. Spherical alumina was found to exhibit greater thermal stability when compared with the conventional porous alumina. The stability of spherical alumina was reduced by dry impregnation. It was shown that the morphology of these materials plays an important role in their thermal stability.
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