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Surface analysis with ESCA and GD-OES of the film formed by cathodic reduction of chromate
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology. (Tillämpad elektrokemi)
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology. (Tillämpad elektrokemi)ORCID iD: 0000-0001-9203-9313
1991 (English)In: Electrochimica Acta, Vol. 36, no 10, 1605-1610 p.Article in journal (Refereed) Published
Abstract [en]

In the chlorate process, a small addition of chromate to the electrolyte results in the formation of a cathode film, which inhibits the reduction of the intermediate hypochlorite ions. To enable surface characterization of the chromium film, it was grown by cathodic reduction onto gold and platinum substrates in hydroxide and chlorate solution. Surface analyses of this film by ESCA and GD-OES indicate that it has a distinct and constant chemical composition during growth given by the formula Cr(OH)3·xH2O. The film is thin, less than 50 Å on platinum and 80 Å on gold. It exhibits poor conductivity and covers the entire cathode surface. © 1991.

Place, publisher, year, edition, pages
1991. Vol. 36, no 10, 1605-1610 p.
Keyword [en]
chlorate, chromium hydroxide film, ESCA, GD-OES, sodium hydroxide.
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-80625OAI: oai:DiVA.org:kth-80625DiVA: diva2:496554
Note
Source: Scopus NR 20140805Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2012-02-10Bibliographically approved

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Lindbergh, Göran

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