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Electrochemical study of some rhodium compounds at a carbon paste electrode with electrolytic binder

โœ Scribed by Folahan A. Adekola; Claude Colin; Denise Bauer

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
464 KB
Volume
38
Category
Article
ISSN
0013-4686

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โœฆ Synopsis

Abstrati

-We have used the carbon paste electrode to study some rhodium compounds in various media. The oxidation of Rh(0) led to the formation of two different types of the Rh(III) complex in 6M HCl, while the reduction of RhCl. 3H,O was found to take place at about the same potential that the reduction of H+ occurs. The reduction of Rh(II1) in 1 M KCI and in 1 M KC1 plus 20% ethanol led to Rh(0) and it took place, respectively, at -285 and -330mV. On the contrary, the reduction of Rh(II1) was found to lead to Rh(I) in the presence of triphenylphosphine and in 1 M KC1 with 20% ethanol. The reduction of Rh(II1) in a mixture of 1 M KCl and 1 M pyridine would most probably lead to a mixture of Rh(I) and Rh(I1) and the reaction was reversible.

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