Experimental study of ZrO2(c) solubility in water and aqueous perchloric acid solutions at 150 and 250°C

Shikina, N. D.; Vasina, O. N.; Gurova, E. V.; Попова, Е. С.; Тагиров, Б. Р.; Shazzo, Yu. K.; Khodakovskii, I. L.

doi:10.1134/s0016702914010078

Geochem. Int.

2013

DOI: 10.1134/s0016702914010078

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Experimental study of ZrO2(c) solubility in water and aqueous perchloric acid solutions at 150 and 250°C

N. D. Shikina

O. N. Vasina

E. V. Gurova

et al.

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Cited by 4 publications

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“…This is confirmed by the values of the zirconium oxide solubility in aqueous solutions at a temperature of 25 °C and above. 19,20 The second reason for the detection of the metallic zirconium in the products of the ZrO 2 reduction by lithium may be due to unaccounted processes of direct electrochemical reduction of:…”

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confidence: 99%

Reduction of ZrO₂ during SNF Pyrochemical Reprocessing

Nikolaev

Suzdaltsev

Pavlenko

et al. 2021

J. Electrochem. Soc.

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Reduction of ZrO 2 by lithium during electrolysis of LiCl-KCl-Li 2 O melt at 650°C was studied using a set of physicochemical methods of analysis. Influence of ZrO 2 in the space near a molybdenum cathode on the kinetics of the cathode process was established. Possible variations of the electrode reaction associated with the zirconium reduction were proposed. The appearance of ZrO 2 in the cathode space resulted in consumption of reduced lithium and in increase in the potential relaxation time of the molybdenum cathode after cathode polarization. Long-term galvanic impulse electrolysis of LiCl-KCl-Li 2 O melt at 650°C was carried out using the molybdenum cathode which was immersed into the ZrO 2 powder. According to the X-ray fluorescence analysis as well as the method of nuclear reactions the reduction product was presented by the ZrO 2 , Li 2 ZrO 3 , Zr 3 O phases. Additionally, by alloying the reduction product with tin, the ZrO 2 reduction degree to metallic zirconium was estimated, which was close to zero. It was assumed that the main pathway for the appearance of the metallic zirconium in the ZrO 2 reduction product during electrolysis of the LiCl-KCl-Li 2 O melt was direct electroreduction of dissolved zirconium in the melt.

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confidence: 99%

Reduction of ZrO₂ during SNF Pyrochemical Reprocessing

Nikolaev

Suzdaltsev

Pavlenko

et al. 2021

J. Electrochem. Soc.

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Thermodynamic Investigation of the Hydrolysis Behavior of Fluorozirconate Complexes at 423.15–773.15 K and 100 MPa

Yan

Liu

et al. 2020

J Solution Chem

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Hydrolysis and Complex Formation of Zr and Hf in Aqueous Solutions of HClO4, HCl, and NaOH in Equilibrium with Baddeleyite (Zr and Hf)O2(cr) at 250°C

Shikina

Тагиров

Bychkova

et al. 2018

Russ. J. Phys. Chem.

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Experimental study of ZrO2(c) solubility in water and aqueous perchloric acid solutions at 150 and 250°C

Cited by 4 publications

References 5 publications

Reduction of ZrO₂ during SNF Pyrochemical Reprocessing

Reduction of ZrO₂ during SNF Pyrochemical Reprocessing

Thermodynamic Investigation of the Hydrolysis Behavior of Fluorozirconate Complexes at 423.15–773.15 K and 100 MPa

Hydrolysis and Complex Formation of Zr and Hf in Aqueous Solutions of HClO4, HCl, and NaOH in Equilibrium with Baddeleyite (Zr and Hf)O2(cr) at 250°C

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Experimental study of ZrO2(c) solubility in water and aqueous perchloric acid solutions at 150 and 250°C

Cited by 4 publications

References 5 publications

Reduction of ZrO2 during SNF Pyrochemical Reprocessing

Reduction of ZrO2 during SNF Pyrochemical Reprocessing

Thermodynamic Investigation of the Hydrolysis Behavior of Fluorozirconate Complexes at 423.15–773.15 K and 100 MPa

Hydrolysis and Complex Formation of Zr and Hf in Aqueous Solutions of HClO4, HCl, and NaOH in Equilibrium with Baddeleyite (Zr and Hf)O2(cr) at 250°C

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Product

Resources

About

Reduction of ZrO₂ during SNF Pyrochemical Reprocessing

Reduction of ZrO₂ during SNF Pyrochemical Reprocessing