Abstract
The powders of silicate-substituted carbonated hydroxyapatites were prepared by a precipitation method from aqueous alkaline solutions with a varied sodium silicate content. With the use of physicochemical techniques, it was established that the solid phase included to 7.36 wt % silicate ions and to 7.34 wt % carbonate ions under the test conditions. The nature of processes occurring on the thermal treatment of the samples depends on the Ca/P and Ca/(P + Si) molar ratios and the concentration of SiO4 groups. A study of the behavior of solid phases on contact with a solution of NaCl (0.9 mol %) showed that the rates of dissolution of all of the silicon-containing samples were higher than that of unsubstituted hydroxyapatite species by a factor of 2–4 because of the active participation of silicates in the resorption of the materials.
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Original Russian Text © A.P. Solonenko, O.A. Golovanova, 2014, published in Zhurnal Neorganicheskoi Khimii, 2014, Vol. 59, No. 11, pp. 1472–1480.
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Solonenko, A.P., Golovanova, O.A. Silicate-substituted carbonated hydroxyapatite powders prepared by precipitation from aqueous solutions. Russ. J. Inorg. Chem. 59, 1228–1236 (2014). https://doi.org/10.1134/S0036023614110230
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DOI: https://doi.org/10.1134/S0036023614110230