Speciation of rhenium in chloride melts: Spectroscopic and electrochemical study / Danilov Danil A.,Volkovich Vladimir A.,Vasin Boris D.,Aleksandrov Denis E.,Polovov Ilya B.,Griffiths Trevor R. // ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES. - 2008. - V. 63, l. 5-6. - P. 371-376.

ISSN/EISSN:

0932-0784 / нет данных

Type:

Article

Abstract:

Speciation of rhenium in high-temperature alkali chloride-based melts was studied using electronic absorption and IR spectroscopy of molten salts and diffuse reflectance spectroscopy of quenched melts. Rhenium was added to the melts by anodic dissolution of the metal (at anodic current densities of 0.005 - 0.05 A/cm(2)), by reacting Re and ReO2 with Cl-2 and HCl, and by dissolving K-2{[}ReCl6]. The melts included 3LiCl-2KCl and NaCl-2CsCl eutectics, an NaCl-KCl equimolar mixture, and pure NaCl, KCl and CsCl between 450 and 850 degrees C. Rhenium was present in the melts as Re(IV) hexachloro-ions, {[}ReCl6](2-); no evidence of species containing rhenium in oxidation states below four was obtained. The kinetics of {[}ReCl6](2-) disproportionation in molten alkali chlorides were investigated, and the IR spectra of {[}ReO4](-) ions in molten CsCl-CsI and CsI were measured for the first time.

Author keywords:

rhenium; rhenium chlorides; chloride melts; electronic absorption spectroscopy MOLTEN-SALT; TEMPERATURE; TECHNETIUM; COMPLEXES

DOI:

нет данных

Web of Science ID:

ISI:000257667700018

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY-JUN
Publisher	VERLAG Z NATURFORSCH
Address	POSTFACH 2645, 72016 TUBINGEN, GERMANY
Language	English
Keywords-Plus	MOLTEN-SALT; TEMPERATURE; TECHNETIUM; COMPLEXES
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Multidisciplinary
Author-Email	volkovich@dpt.ustu.ru
ResearcherID-Numbers	Danilov, Danil/N-6929-2015 Volkovich, Vladimir/K-8339-2012
ORCID-Numbers	Volkovich, Vladimir/0000-0003-4438-1194 danilov, danil/0000-0001-7886-7147
Number-of-Cited-References	16
Usage-Count-Since-2013	3
Journal-ISO	Z. Naturfors. Sect. A-J. Phys. Sci.
Doc-Delivery-Number	326OB