Influence of cesium cations on the formation of phosphates in aqueous solutions of the system Ca2+—Cs+—M+—PO43–—NO3 (M+ — Na+, K+)

1Livitska, OV, 1Strutynska, NYu., 1Slobodyanik, MS
1Taras Shevchenko National University of Kyiv
Dopov. Nac. akad. nauk Ukr. 2018, 11:68-75
Section: Chemistry
Language: Ukrainian

Peculiarities of the influence of cesium cations on the formation of calcium phosphates at the coprecipitation from aqueous solutions of the systems Ca2+—Cs+—M+—PO43–—NO3 (M+ — Na+, K+) (at the molar ratios Ca2+/PO43– = 1.67; M+/Cs+ = 1.0 and 2.0) have been investigated. The samples have been characterized using the powder X-ray diffraction method, FTIR-spectroscopy, scanning electron microscopy, and elemental ana lisys. It is found that cesium cations cause the formation of phases based on α-Ca3(PO4)2 at the precipitation from aqueous solutions.

Keywords: complex phosphates, coprecipitation, scanning electron microscopy, TG/DTA
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