Vanadium Speciation in Fused Alkali Chlorides / Polovov I. B.,Chernyshov M. V.,Volkovich V. A.,Vasin B. D.,Griffiths T. R. // JOURNAL OF THE ELECTROCHEMICAL SOCIETY. - 2017. - V. 164, l. 8. - P. H5139-H5144.

ISSN/EISSN:

0013-4651 / 1945-7111

Type:

Article

Abstract:

Electronic absorption spectra of vanadium ions were recorded between 450 and 750 degrees C in 3LiCl-2KCl, NaCl-KCl and NaCl-2CsCl based melts. Analysis of the spectra showed that vanadium in the oxidation states of +2 and +3 is present in the melts as complex chloro-ions. Vanadium(II) can form the complex ions in octahedral and tetrahedral coordination, the latter being favored by higher temperatures. Only six-coordinated V(III) ions were observed. Vanadium in the oxidation state of +4 can be present in chloride melts only in the form of vanadyl-based oxochloro-species. Main spectroscopic parameters of vanadium complex ions were determined. Electronic absorption spectroscopy was also applied for studying a variety of the red-ox processes in vanadium containing melts including electrochemical oxidation and reduction of various species, and reaction of vanadium containing melts with oxygen. (C) The Author(s) 2017. Published by ECS. All rights reserved.

Author keywords:

MOLTEN POTASSIUM THIOCYANATE; HIGH-PURITY VANADIUM; ABSORPTION-SPECTRA; PARAMAGNETIC-RESONANCE; METAL-COMPLEXES; ALLOYS

DOI:

10.1149/2.0201708jes

Web of Science ID:

ISI:000413189000035

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	ELECTROCHEMICAL SOC INC
Address	65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
Language	English
EISSN	1945-7111
Keywords-Plus	MOLTEN POTASSIUM THIOCYANATE; HIGH-PURITY VANADIUM; ABSORPTION-SPECTRA; PARAMAGNETIC-RESONANCE; METAL-COMPLEXES; ALLOYS
Research-Areas	Electrochemistry; Materials Science
Web-of-Science-Categories	Electrochemistry; Materials Science, Coatings \& Films
Author-Email	polovov\_ilya@mail.ru
ResearcherID-Numbers	Volkovich, Vladimir/K-8339-2012
ORCID-Numbers	Volkovich, Vladimir/0000-0003-4438-1194
Number-of-Cited-References	31
Journal-ISO	J. Electrochem. Soc.
Doc-Delivery-Number	FK0SA