Abstract
Two types of thermal effects, caused by substitutions (Ca2+↔ Na+, ↔ CO3 2-, SO4 2-, OH-↔ F-) in synthetic precipitated apatites as well as by sorption of Cd2+, Zn2+, and Cr3+ ions from the solutions were studied by TG/DTA, XRD and FTIR analysis. The temperatures of exothermic effect at 330-340°C and of decomposition of carbonate and sulfate apatites at 650-950°C were shown to depend on the substitutions in the apatite structure.
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Tőnsuaadu, K., Peld, M. & Bender, V. Thermal analysis of apatite structure. Journal of Thermal Analysis and Calorimetry 72, 363–371 (2003). https://doi.org/10.1023/A:1023917113850
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DOI: https://doi.org/10.1023/A:1023917113850