Abstract
The effects of water and catalyst (formic acid) concentrations and temperature on tetraethoxysilane hydrolysis, followed by gel formation, have been studied. The catalyst concentration is found to have a stronger effect on the variation rate of dynamic viscosity of the system compared to the effect of water concentration. The thermal behavior of the thus-prepared xerogels has been studied in an air flow; distinctions have been noticed for samples whose initial dispersion-bound systems were formed at room temperature.
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Original Russian Text © E.P. Simonenko, A.V. Derbenev, N.P. Simonenko, V.G. Sevastyanov, N.T. Kuznetsov, 2015, published in Zhurnal Neorganicheskoi Khimii, 2015, Vol. 60, No. 12, pp. 1579–1587.
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Simonenko, E.P., Derbenev, A.V., Simonenko, N.P. et al. Gel formation during sol–gel synthesis of silicon dioxide. Russ. J. Inorg. Chem. 60, 1444–1451 (2015). https://doi.org/10.1134/S0036023615120220
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DOI: https://doi.org/10.1134/S0036023615120220