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The electrochemical behaviour of indium amalgams in alkaline solutions

โœ Scribed by R.D. Armstrong; A.B. Suttie; H.R. Thirsk


Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
397 KB
Volume
13
Category
Article
ISSN
0013-4686

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โœฆ Synopsis


The anodic dissolution of indium amalgams in alkaline solutions follows a three-stage oxidation process, similar to the process in acidic solutions .

The anodic films produced on indium amalgams are amorphous indium hydroxide . They are similar to anodic mercuric oxide and thallous chloride films in that those grown at very positive potentials are very thin whereas those grown at less positive potentials are much thicker .

Anodic films formed on 1 % amalgam in 0'l M NaOH are neither appreciable ionic nor electronic conductors .

Zusammenlhssung-Die anodische Aufiusung von Indium-Amalgamen in alkalischer I .Ssung folgt einem dreistufigen Oxydationsvorgang, analog demjenigen in sauren Lasungen . Die sich auf dem Amalgam bildenden anodischen Schichten bestehen aus amorphem Indium-hydroxyd . Sie sind iihnlich den anodischen Merkurioxyd-and Thallo-chlorid-Schichten, indem die bei sehr positives Potentialen gebildeten Schichten sehr dorm sind, wahrend diejenigen bei weniger positiven Potentialen bedeutend dicker werden . Die auf 1 %-igem Amalgam in 0,1 M NaOH gebildeten anodischen Schichten sind weder merklich ions-noch electronen-tend.

Rksยฎe-La dissolution anodique des amalgames d'indium dans des solutions alcalines suit un processus d'oxydation a trois stades similaires an processus dans Ins solutions acides .

Les films anodiques produits sur lea amalgames d'indium sent des hydroxydes d'indium amorphes . Its sent analogues aux films anodiques d'oxyde mercurique et de chlorure thalleux, de sorte que ceux qui se d6veloppent it des potentiels trios positifs sent trios minces, tandis que ceux qui se d6veloppent 6 des potentiels moms positifs sent plus 6pais .

Des films anodiques formts sur on amalgame a I % daps NaOH 0. 1 M no sont ni des conducteurs ioniques, ni des conducteurs 6lectroniques appreciables .


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