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 language | English |
|---|---|
| Pages (from-to) | 253-269 |
| Number of pages | 17 |
| Journal | Surface Science |
| Volume | 104 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Mar 1 1981 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Condensed Matter Physics
- Surfaces and Interfaces
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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 journal › Article
}
TY - JOUR
T1 - The surface cation densities of iron oxide-chromium oxide solid solutions
AU - Kung, M. C.
AU - Kung, Harold H
PY - 1981/3/1
Y1 - 1981/3/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0001400262&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001400262&partnerID=8YFLogxK
U2 - 10.1016/0039-6028(81)90134-5
DO - 10.1016/0039-6028(81)90134-5
M3 - Article
VL - 104
SP - 253
EP - 269
JO - Surface Science
JF - Surface Science
SN - 0039-6028
IS - 1
ER -