Interaction of Calcium and Strontium Carbonates with KF Solutions

The conversion of powdery MCO 3 (M = Ca or Sr) to the metal fluoride by reacting it with potassium fluoride in solution was studied. The chosen reaction conditions produce single-phase calcium fluoride and strontium fluoride in nanosized powders containing 1.7 and 4.4 mol % KF, respectively, as prob...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2022-08, Vol.67 (8), p.1211-1220
Main Authors: Fedorov, P. P., Luginina, A. A., Tabachkova, N. Yu, Alexandrov, A. A., Badyanova, L. V., Kuznetsov, S. V.
Format: Article
Language:English
Subjects:
Calcium carbonate
Calcium fluoride
Carbonates
Chemistry
Chemistry and Materials Science
High temperature
Inorganic Chemistry
Metal fluorides
Potassium fluoride
Strontium
Strontium carbonate
Strontium fluorides
Synthesis and Properties of Inorganic Compounds
X ray powder diffraction
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Summary:The conversion of powdery MCO 3 (M = Ca or Sr) to the metal fluoride by reacting it with potassium fluoride in solution was studied. The chosen reaction conditions produce single-phase calcium fluoride and strontium fluoride in nanosized powders containing 1.7 and 4.4 mol % KF, respectively, as probed by X-ray powder diffraction (XRD), scanning and transmission electron microscopy (SEM and TEM, respectively), and energy-dispersive X-ray spectroscopy (EDX). KCaF 3 is not formed in the reaction. KCaF 3 is a high-temperature phase with a formation temperature of 626°С.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023622080101