Abstract
Synthetic hydroxylapatites are prepared with additives, such as Mg2+, CO 2−3 , and C2O 2−4 . An increase in the concentration of magnesium leads to the formation of struvite. In the Ca(NO3)2-(NH4)HPO4-Na2CO3-NH4OH-H2O system, an excess of carbonate ions leads to the formation of calcite. When the synthesis is performed using oxalate ions as additives, calcium oxalate does not form the inherent phase. Calcium oxalate monohydrate is synthesized with additives, such as CO 2−3 , HPO 2−4 , and SO 2−4 ions and urea, glycine, and glutamic acid. X-ray powder diffraction analysis has revealed that the composition of the CaC2O4 · H2O precipitate remains unchanged under these conditions and in the presence of the aforementioned additives.
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Original Russian Text © A.A. Rabinovich, O.A. Golovanova, V.I. Blinov, 2008, published in Fizika i Khimiya Stekla.
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Rabinovich, A.A., Golovanova, O.A. & Blinov, V.I. Influence of inorganic and organic additives on the composition of the precipitate of synthetic hydroxylapatite and calcium oxalate monohydrate. Glass Phys Chem 34, 332–335 (2008). https://doi.org/10.1134/S1087659608030152
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DOI: https://doi.org/10.1134/S1087659608030152