Thermolytic characteristics of mixed zirconium oxyhydrate and silica gels prepared at different orders of reagent mixing

The results of thermolytic characteristics investigation of individual and mixed gels of zirconium oxyhydrates and silicic acid, prepared at minimal reagents concentrations, ensuring gel formation, have been shown. Mixed gels have been synthesized at different orders of reagent introduction into the mother liquid. It has been established that 8 types of temperature intervals can be determined for oxyhydrate materials, within which maximums of dehydration of chemically bonded water are observed. Sorption activity of gels in relation to calcium and yttrium ions increases with higher amount of water, for which maximums of dehydration are found in intervals: 121-139 and 520-760 °С; it decreases with higher amount of water, for which maximums of thermal removal are found in intervals: 104-117 and 142-170 °С.