On hydrated strontium hafnate

For the first time, strontium hafnate of the composition SrHfO3. 2H(2)O was isolated from hafnium-containing alkali solutions. This compound was the o nly solid product of the reaction in the range of the strontium-to-hafnium molar reed ratios studied from 0.52 : 1 to 1.74 : 1 under various synthesis conditions (T = 40-145 degreesC. 50.0-67.0 wt% NaOH). The compound crystal lizes in the cubic system with a varied within 4.072-4.144 Angstrom. Water enters the compound as molecules or hydroxide groups and insignificantly in fluences its structure. Dehydration decreases a.