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THEORETICAL ANALISYS OF САSIO3 CRYSTALLIZATION CONDITIONS IN WATER SOLUTIONS

Solonenko Anna Petrovna
OSMU, Ministry of Public Health, Russia
PhD in Chemistry, Head of the Research Laboratory OmSTU, Researcher

Abstract
The theoretical analysis of poorly soluble calcium compounds formation in the open systems СаX2 - Na2SiO3 - Н2О with varying concentrations of calcium ions, Ca/Si molar ratio and pH was made. According to the results of calculation of the Gibbs energy change in the crystallization process it was found that СаSiO3 thermodynamically can form at pH = 8 ÷ 12 together with СаСO3. At higher pH Ca(OH)2 may precipitate. On this basis optimum conditions of calcium silicate synthesis by deposition method was proposed.

Keywords: aqueous solutions, calcium carbonate, calcium silicate, crystallization, deposition method, Gibbs energy, open systems, soluble compounds


Category: 02.00.00 Chemistry

Article reference:
Theoretical analisys of СаSiO3 crystallization conditions in water solutions // Modern scientific researches and innovations. 2016. № 9 [Electronic journal]. URL: http://web.snauka.ru/en/issues/2016/09/72002

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