Abstract
The sol-gel process for synthesizing forsterite from magnesium acetate and tetraethoxysilane (TEOS) is investigated. The effect of the conditions of hydrolysis of TEOS on the morphology and phase composition of the powders is studied. It is found that a solution of magnesium acetate and TEOS hydrolysate in an acid medium forms a stable sol which transforms into gel. In this case, the yield of forsterite after heat-treatment at 800°C is 97%. Performing hydrolysis in an alkaline medium and combining the hydrolysis and precipitation of magnesium hydroxide makes it possible to obtain a weakly aggregated powder with composition close to monofractional but the synthesis temperature of forsterite increases.
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