POLAROGRAPHIC BEHAVIOUR OF TECHNETIUM

Journal Article · Mon Apr 01 04:00:00 EST 1963 · Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc.

DOI:https://doi.org/10.1039/jr9630002479· OSTI ID:4691133

Salaria, G B.S.; Rulfs, C L; Elving, P J

The electrochemical reduction of pertechnetate ion and related species was examined polarographically and by macroscale electrolysis, including coulometry, over the pH range of -0.6 to 13.30. Technetium(VII) is reduced in two or three stages. In acidic media the first stage usually involves addition of four electrons, giving technetium(III); a poorly separated (IV) and up to st r (III) step is sometimes discernible. In non-complex-forming media of pH > 4, the first stage of reduction proceeds only to technetium(IV); in macroscale electrolyses this product is largely precipitated as TcO/sub 2/. Subsequent reduction is quite profound, equivalent at least to the level of metallic technetium, and the complex nature of this stage may justify the postulation of technetium hydrides analogous to rhenium hydrides analogous to rhenium hydrides. In solutions of pH 11 to 13 the reduction step of technetium(IV) to metal (?) breaks into two stages, an adsorption-controlled (IV) and up to st r (III) step preceding further reduction. (auth)

• Research Organization: Univ. of Michigan, Ann Arbor
• NSA Number: NSA-17-023329
• OSTI ID: 4691133
• Journal Information: Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc., Journal Name: Journal of the Chemical Society (England) Divided into J. Chem. Soc. A, J. Chem. Soc. B, etc.; ISSN JCSOA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
ADSORPTION
CHEMISTRY
COULOMETRY
ELECTROCHEMISTRY
ELECTROLYSIS
PERTECHNETATES
POLAROGRAPHY
PRECIPITATION
QUALITATIVE ANALYSIS
REACTION KINETICS
REDUCTION
TECHNETIUM
TECHNETIUM COMPOUNDS
TECHNETIUM HYDRIDES
TECHNETIUM OXIDES