The Effect of the Second Coordination Sphere on Vanadium Speciation in Molten Chlorides / Polovov I. B.,Chernyshov M. V.,Volkovich V. A.,Vasin B. D.,Griffiths T. R. // . - 2016. - V. 75, l. 15. - P. 245-253.

ISSN/EISSN:
1938-5862 / нет данных
Type:
Proceedings Paper
Abstract:
Vanadium speciation in a variety of alkali chloride based melts was studied in situ using high temperature electronic absorption spectroscopy. The experimental spectra were resolved into constituent Gaussian bands. Octahedral VCl63- complex ions is the only soluble species of V(III). Oxidation of VCl63- complexes or chlorination of V2O5, V2O4 or V2O3 by hydrogen chloride produces soluble vanadyl- based complexes. The results obtained indicate that the coordination environment of vanadyl- species in NaCl2CsCl melts is different from the melts containing smaller cations. Anodic dissolution of metallic vanadium in chloride melts produces vanadium(II) ions. Increasing temperature and the mean radius of the salt-solvent cation resulted in changes of the electronic spectra as a result of shifting VCl64-<-> VCl4 (2-)equilibrium towards the tetrahedral complexes.
Author keywords:
нет данных
DOI:
10.1149/07515.0245ecst
Web of Science ID:
ISI:000406655900024
Соавторы в МНС:
Другие поля
Поле Значение
Editor Haverhals, L and Mantz, R and Trulove, P and Ueda, M and Carter, M and Biddinger, EJ and Suroviec, A and Reichert, M and Endres, F and Bund, A and Ispas, A and Fox, DM and DeLong, H
Booktitle MOLTEN SALTS AND IONIC LIQUIDS 20
Series ECS Transactions
Note 20th Int Symposium on Molten Salts and Ionic Liquids as part of the Joint Meeting of the 230th Meeting of The Electrochemical-Society, The Electrochemical-Society-of-Japan, and the Korean-Electrochemical-Society, Honolulu, HI, OCT 02-07, 2016
Organization Electrochem Soc; Electrochem Soc Japan; Korean Electrochem Soc; Chinese Soc Electrochemistry; Royal Australian Chem Inst, Electrochemistry Div; Japan Soc Appl Phys; Korean Phys Soc Semiconductor Div; Chinese Phys Soc, Semiconductor Phys Div; Electrochem Soc, Phys \& Analyt Electrochemistry Div; Electrochem Soc, Electrodeposit Div; Electrochem Soc, Energy Technol Div; Electrochem Soc, Sensor DIv
Publisher ELECTROCHEMICAL SOC INC
Address 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
Language English
ISBN 978-1-60768-732-0
Research-Areas Electrochemistry; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories Electrochemistry; Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers Volkovich, Vladimir/K-8339-2012
ORCID-Numbers Volkovich, Vladimir/0000-0003-4438-1194
Funding-Acknowledgement Ministry of Education and Science of the Russian Federation {[}14.581.21.0002, RFMEFI58114X0002]
Funding-Text The study was financially supported by the Ministry of Education and Science of the Russian Federation within the framework of subsidizing agreement of September 29, 2014 (no. 14.581.21.0002, unique agreement identifier RFMEFI58114X0002) of the Federal Target Program ``Research and Development in Priority Directions of the Progress of the Scientific and Technological Complex of Russia for the Years 2014-2020.{''}
Number-of-Cited-References 10
Doc-Delivery-Number BI1PJ