Thermal stability of adsorbents based on the composite silica-zirconia gels

In the present study the investigation of influence of thermal treatment on sorption activity of the silica-zirconia gels in relation to di- and trivalent cations has been presented. Surface area of the sorption materials also has been measured. It has been established that the developed surface area of the samples it is the reason for high sorbtive activity retention after thermal treatment even at 200 °C.