The surface cation densities of iron oxide-chromium oxide solid solutions

M. C. Kung, Harold H Kung

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The surface cation densities of FexCr2 - xO3 solid solutions were determined for x = 0.5, 1, and 1.5 using Auger Electron Spectroscopy on samples that had been equilibrated in air at 798 or 973 K. Cr(VI) was found to be present on the surface by iodometric titration. The results indicated that the Cr(VI) Cr(III) ratio was constant, independent of composition. Compared to the bulk densities, Fe was found to be enriched on the surface for x = 0.5 and 1, but depleted for x = 1.5.

Original languageEnglish
Pages (from-to)253-269
Number of pages17
JournalSurface Science
Volume104
Issue number1
DOIs
Publication statusPublished - Mar 1 1981

Fingerprint

chromium oxides
Iron oxides
iron oxides
Cations
Solid solutions
Chromium
solid solutions
Positive ions
cations
Oxides
Auger electron spectroscopy
Titration
titration
Auger spectroscopy
electron spectroscopy
air
Air
Chemical analysis
ferric oxide
chromium oxide

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

The surface cation densities of iron oxide-chromium oxide solid solutions. / Kung, M. C.; Kung, Harold H.

In: Surface Science, Vol. 104, No. 1, 01.03.1981, p. 253-269.

Research output: Contribution to journalArticle

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