In situ Raman Spectroscopic Study of the Kinetics of the Chemical Dissolution of Ytterbium Oxide in YbCl3–KCl Melt

Zakirýanova, Irina D.

doi:10.1007/s10812-021-01236-x

Cited by 4 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A comparative analysis of the spectra of the YbCl 3 -KCl, YbCl 3 -KCl-Yb 2 O 3 and GdCl 3 -KCl, GdCl 3 -KCl-Gd 2 O 3 melts, with practically the same RE chloride content, 13,24,39 reveals that the vibrational frequencies of the Yb-Cl and Yb-O bonds lie in the higher frequency region compared with the vibrational frequencies of the Gd-Cl and Gd-O bonds (280, 447 and 248, 374 cm −1 , correspondingly). Here the smaller radius of the Yb 3+ cation compared to that of Gd 3+ leads to the increase in the rigidity of the bonds in ionic groups.…”

Section: Resultsmentioning

confidence: 99%

Electrical Conductivity of GdCl₃-Gd₂O₃ Molten System

Nikolaeva

Zakirýanova

Bovet

2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

The electrical conductivity of GdCl3 chloride melts with the gadolinium oxide (Gd2O3) additions ranging from 0 to 5 mol % was measured depending on both the temperature and concentration of Gd2O3. The obtained temperature dependencies can be approximated by Arrhenius-type equation. The calculated effective activation energy values of electrical conductivity increase with the increasing concentration of Gd2O3 above 2.5 mol %. A decrease in the electrical conductivity of the chloride melts when adding the gadolinium oxide according to the Raman spectra data can be explained by the presence of [OGd3Cln] oxychloride associates.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrical Conductivity of GdCl₃-Gd₂O₃ Molten System

Nikolaeva

Zakirýanova

Bovet

2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

Kinetics of Dissolution of Gadolinium Oxide in GdCl3–KCl Chloride Melt According to Raman Spectroscopy Data

Zakirýanova

2022

J Appl Spectrosc

View full text Add to dashboard Cite

Mechanism and Kinetics of Interaction of FLiNaK–CeF3 Melt with Water Vapors and Oxygen in the Air Atmosphere

et al. 2023

View full text Add to dashboard Cite

The mechanism and kinetic parameters of the interaction of the FLiNaK–CeF3 melt with water vapors and oxygen in the air atmosphere were determined using Raman and IR spectroscopy, XRD analysis, and thermodynamic modeling of processes. The presence of the 4CeF3(solution) + 6H2O (gas) + O2(gas) = 4CeO2(solid) + 12HF(gas) reaction, which disturbs the fluoride melt homogeneity, was verified in situ by Raman spectroscopy adopted for high-temperature, chemically aggressive fluoride systems. Based on the obtained spectral data, the type of the kinetic equation, order, and rate constant of the chemical reaction were determined. The concentration of cerium dioxide was found to increase linearly in time and a zero reaction order with respect to CeO2 was detected. The change in the concentration of CeO2 over time at T = 510 °C is described by the equation C = 0.085t; the reaction rate constant is 0.085 mol. %∙min−1. The obtained kinetic parameters may be used to model emergencies related with the depressurization of the coolant circuit or the working area of the molten salt reactor.

show abstract

In situ Raman Spectroscopic Study of the Kinetics of the Chemical Dissolution of Ytterbium Oxide in YbCl3–KCl Melt

Cited by 4 publications

References 18 publications

Electrical Conductivity of GdCl₃-Gd₂O₃ Molten System

Electrical Conductivity of GdCl₃-Gd₂O₃ Molten System

Kinetics of Dissolution of Gadolinium Oxide in GdCl3–KCl Chloride Melt According to Raman Spectroscopy Data

Mechanism and Kinetics of Interaction of FLiNaK–CeF3 Melt with Water Vapors and Oxygen in the Air Atmosphere

Contact Info

Product

Resources

About

In situ Raman Spectroscopic Study of the Kinetics of the Chemical Dissolution of Ytterbium Oxide in YbCl3–KCl Melt

Cited by 4 publications

References 18 publications

Electrical Conductivity of GdCl3-Gd2O3 Molten System

Electrical Conductivity of GdCl3-Gd2O3 Molten System

Kinetics of Dissolution of Gadolinium Oxide in GdCl3–KCl Chloride Melt According to Raman Spectroscopy Data

Mechanism and Kinetics of Interaction of FLiNaK–CeF3 Melt with Water Vapors and Oxygen in the Air Atmosphere

Contact Info

Product

Resources

About

Electrical Conductivity of GdCl₃-Gd₂O₃ Molten System

Electrical Conductivity of GdCl₃-Gd₂O₃ Molten System