5.  Synthesis of Tailored Porosity Materials Using the Sol-Gel Method

Authors: Z. Ecsedi


Abstract:

This paper summarizes the study about producing ceramic materials with tailored nanoporous structure, as thin films, nonsupported membranes and as bulk gel. The ceramic materials were prepared by the sol-gel method using alkoxide precursors especially based on hydrolysis and condensation reaction of the aluminium triisopropylate. The optimal processing, drying and firing conditions for obtaining tailored porosity materials have been established. The influence of different way of nitric acid addition on the sol-gel process, the thermal behaviour of materials and also the effect of different polyvinyl alcohol (PVA) contents at different calcination temperatures on the characteristics of the prepared materials were investigated.


Keywords: Al2O3, sol-gel process, ceramic film, mesoporous alumina, polyvinil acohol template

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