IR spectroscopic study of the phase composition for sodium silicate synthesized in aqueous medium

Autor:	A. Sh. Komarevskaya, E. F. Medvedev
Rok vydání:	2007
Předmět:	Chemistry Sodium Inorganic chemistry chemistry.chemical_element Infrared spectroscopy Sodium silicate Cristobalite Silicate chemistry.chemical_compound Mechanics of Materials Materials Chemistry Ceramics and Composites Bound water Sodium carbonate Stoichiometry
Zdroj:	Glass and Ceramics. 64:7-11
ISSN:	1573-8515 0361-7610
DOI:	10.1007/s10717-007-0002-y
Popis:	The distribution of components, phase composition, and structural features of sodium silicate synthesized in aqueous medium were investigated by IR spectroscopy. In prolonged storage in air, the substance partially cracked and its phase composition changed. Sodium silicates of different stoichiometry, free silica in the form of cristobalite, and sodium carbonate were the basic phases. The concentration gradients of sodium carbonate and water in the silicate in ambient conditions intensified from center to edges. Generation and development of cracks that perturbed the continuity of the synthesized substance were explained. It was noted that water sorbed from air is more dangerous for degradation of the structure than structurally bound water from the initial solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::56858c1bf7108611015cd0b49d584a9b https://doi.org/10.1007/s10717-007-0002-y Zobrazit plný text záznamu Plný text ve formátu PDF