Using the Yb2O3–YbCl3–KCl oxide–chloride system as an example, an approach has been proposed and tested permitting a Raman spectral study of the kinetics of the dissolution of rare-earth metal oxides in molten salt media at high temperature. Evidence has been obtained for a chemical mechanism of the dissolution of ytterbium oxide in the YbCl3–KCl melt and the irreversibility of the chemical reaction taking place. The concentration of the ytterbium oxide reagent was found to decrease exponentially over time. Firstorder kinetics relative to Yb2O3 was established.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 88, No. 4, pp. 576–581, July–August, 2021.
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Zakiryanova, I.D. In situ Raman Spectroscopic Study of the Kinetics of the Chemical Dissolution of Ytterbium Oxide in YbCl3–KCl Melt. J Appl Spectrosc 88, 755–760 (2021). https://doi.org/10.1007/s10812-021-01236-x
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DOI: https://doi.org/10.1007/s10812-021-01236-x