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.

中文翻译：

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氧化镱在 YbCl3–KCl 熔体中化学溶解动力学的原位拉曼光谱研究

以 Yb ₂ O ₃ -YbCl ₃ -KCl 氧化物 - 氯化物系统为例，提出并测试了一种方法，允许对高温下稀土金属氧化物在熔盐介质中溶解的动力学进行拉曼光谱研究. 已经获得了氧化镱在YbCl ₃ -KCl 熔体中溶解的化学机理和发生的化学反应的不可逆性的证据。发现氧化镱试剂的浓度随时间呈指数下降。建立了相对于 Yb ₂ O _{3 的}一级动力学。