Chemistry of vanadium chlorides in molten salts: An electronic absorption spectroscopy study (vol 103, pg 387, 2003) / Polovov IB,Volkovich VA,Shipulin SA,Maslov SV,Khokhryakov AA,Vasin BD,Griffiths TR,Thied RC // JOURNAL OF MOLECULAR LIQUIDS. - 2003. - V. 105, l. 1. - P. 105-116.

ISSN/EISSN:

0167-7322 / нет данных

Type:

Correction

Abstract:

The chloro and oxy-chloro complex ions of vanadium, containing the metal in different oxidation states (II, III, IV and V), were investigated in the melts NaCl-CsCl (at 550 - 700 degreesC) and NaCl-KCl (at 680 - 980 degreesC) under a variety of conditions. Melts were examined using electronic absorption spectroscopy between 4,000 and 33,000 cm(-1). Anodic dissolution of vanadium was studied in NaCl-KCl melts at various anodic current densities. Vanadium dissolves, forming VIII) ions, at current densities of 100-150 mA cm(-2); increasing the current density above ca. 340 mA cm(-2) leads to the formation of predominantly V(III) species. Reactions of vanadium metal and vanadium oxides (V2O3 and V2O4) with hydrogen chloride or chlorine were followed by in situ spectroscopy measurements. Depending on the experimental conditions, a range of vanadium chloro- and oxychloro-complexes was formed. Reaction of the V(P chloro-complex with oxygen leads to the formation of VO(II) complex ions. Preliminary results indicate that the V(IV) chloro-complex, VCl62-, can be formed by oxidising VCl63- with chlorine. Vanadium(V) oxide reacts with hydrogen chloride in NaCl-KCl melts to form an oxygen-containing complex of V(III). Direct dissolution of V2O5 in NaCl-KCl melts yields sodium polyvanadate, NaV6O15.

Author keywords:

vanadium; vanadium oxides; vanadium chlorides; alkali metal chloride melts; chlorination; electronic spectroscopy

DOI:

10.1016/S0167-7322(03)00025-4

Web of Science ID:

ISI:000182470300009

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR 10
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Article-Number	PII S0167-7322(03)00025-4
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Atomic, Molecular \& Chemical
ResearcherID-Numbers	Volkovich, Vladimir/K-8339-2012
ORCID-Numbers	Volkovich, Vladimir/0000-0003-4438-1194
Number-of-Cited-References	7
Usage-Count-Since-2013	3
Journal-ISO	J. Mol. Liq.
Doc-Delivery-Number	671NF