The influence of electrode material nature on the mechanism of cathodic reduction of ytterbium (III) ions in fused NaCl–KCl–CsCl eutectic

Smolenski, Valeri; Новоселова, А. В.; Осипенко, А. Г.; Kormilitsyn, M. V.

doi:10.1016/j.jelechem.2009.06.014

Cited by 36 publications

(24 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our experimental data of apparent standard redox potentials of ytterbium obtained by emf method in fused NaCl-KCl-CsCl eutectic are closed to the literature data [18] obtained by transient electrochemical technique in YbCl 3 -NaCl-KCl-CsCl system.…”

Section: Resultssupporting

confidence: 66%

“…It depends from decreasing of the stability of chloride complexes with the increasing of the temperature [31]. The comparison of our data for ytterbium compounds, obtained by emf, and cyclic voltammetry [18], table 2 shows the larger difference in calculation results at low temperatures. It depends from the different slope coefficients in the equations E Ã LnðIIIÞ=LnðIIÞ ¼ Àa þ bT=V, obtained by emf and cyclic voltammetry methods.…”

Section: Resultsmentioning

confidence: 70%

“…It depends from the different slope coefficients in the equations E Ã LnðIIIÞ=LnðIIÞ ¼ Àa þ bT=V, obtained by emf and cyclic voltammetry methods. This difference may be the result of using the approximate values of diffusion coefficient of Yb 2+ -ions [18].…”

Section: Resultsmentioning

confidence: 99%

“…Also the study of Tm is interesting as it has exactly the same electrochemical behavior as Am. In addition, REE have similar chemical properties [6][7][8][9][10][11][12][13][14][15][16][17][18][19]37] to those of actinides [20][21][22][23][24][25][26][27][28][29][30] hence separation between these groups of elements is very difficult. For this reason, a good knowledge of the base thermodynamic properties of REE and An in the proposed separation media is very important.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermodynamic properties of thulium and ytterbium in fused NaCl–KCl–CsCl eutectic

Новоселова¹,

Smolenski²

2011

The Journal of Chemical Thermodynamics

Self Cite

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 66%

Section: Resultsmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermodynamic properties of thulium and ytterbium in fused NaCl–KCl–CsCl eutectic

Новоселова¹,

Smolenski²

2011

The Journal of Chemical Thermodynamics

Self Cite

View full text Add to dashboard Cite

“…In most of the studies, measurements have been made simply by visual determination of the immersion depth, 4,14,17,[22][23][24][25][26][27][28]32,33,39,42,[49][50][51][52][53]58 which has an error associated with capillary effects and wetting between the electrode and the salt at different temperatures. Several studies used wires encased in alumina or other insulating material tubes with a known apparent surface area.…”

Section: Resultsmentioning

confidence: 99%

Method Development for Quantitative Analysis of Actinides in Molten Salts

Tylka

Willit

Prakash

et al. 2015

J. Electrochem. Soc.

View full text Add to dashboard Cite

This paper describes how electrochemical techniques have been used to develop a method for high-precision, real-time quantitative measurements of the concentration of actinides, present in in molten salts as actinide chlorides, for pyrochemical process monitoring applications. Possible reasons for discrepancies between reported measurements obtained with electrochemical techniques have been investigated and a combination of methods to improve their precision has been established. The combination of methods consists of selecting a suitable electroanalytical measurement technique, experimentally verifying assumptions used in its theoretical analysis, ensuring reproducible conditions at the electrode/electrolyte interface, and using an improved method to eliminate the need to know the electrode surface area. By following the developed procedures and refining both experimental techniques and data analysis methods, precise and reproducible measurements were obtained for U and Pu in LiCl/KCl eutectic at 773 K. Preliminary results showed that cyclic voltammetry, along with a method of standard area addition, are very promising tools for in situ quantitative measurements with a degree of precision comparable to destructive analysis techniques. Electrorefining is the main step in pyrochemical reprocessing. During this process, actinides are separated from the bulk of the fission product elements by electrochemical dissolution and electrotransport onto a solid or liquid cathode. The goal of the process is to maximize the separation and recovery of actinides from chlorinated fission products so that minimal amounts of actinides are lost to the process waste stream. [1][2][3][4][5] In addition to efficient actinide recovery, there is a need to address the safeguarding the recycle system. 5 Highprecision, real-time concentration measurements of actinides, present as actinide chlorides, in molten salts are required for process monitoring and control and could be used to support traditional material control and accountability techniques. Development of these measurements is essential to implement and operate a commercial fuel reprocessing facility. [6][7][8][9][10] Electrochemical techniques are well suited for in situ monitoring because they allow rapid, real-time measurements, are compatible with remote handling operations, and do not require the use of standards. Also, the equipment is not affected by the high radiation field present in a fuel processing operation.9,10 Unlike offline destructive analysis techniques, in situ methods do not require representative sample collection and preparation, and therefore avoid problems with sample contamination and degradation. In addition, analytical results can be received in a relatively short period (for example, less than 2 minutes).In an electrochemical cell, the measured potential (E), current (i), or charge (Q) is related to the quantity of the analyte in the solution; therefore, it can serve as an analytical signal for concentration measurements. 11,12 Depending on the applied...

show abstract

Extraction of ytterbium via co-reduction of Al(III) and Yb(III) from LiCl–KCl melt on W electrode

Yan

Zhang

et al. 2013

J Radioanal Nucl Chem

View full text Add to dashboard Cite

The influence of electrode material nature on the mechanism of cathodic reduction of ytterbium (III) ions in fused NaCl–KCl–CsCl eutectic

Cited by 36 publications

References 19 publications

Thermodynamic properties of thulium and ytterbium in fused NaCl–KCl–CsCl eutectic

Thermodynamic properties of thulium and ytterbium in fused NaCl–KCl–CsCl eutectic

Method Development for Quantitative Analysis of Actinides in Molten Salts

Extraction of ytterbium via co-reduction of Al(III) and Yb(III) from LiCl–KCl melt on W electrode

Contact Info

Product

Resources

About