Abstract
Surface composition of and CO chemisorption on a partially oxidized titanium foil covered with 120 Å of nickel was examined by Auger electron spectroscopy (AES) after various amounts of hydrogen reduction at 700 K. AES and sputter-profiling showed the segregation of submonolayer amounts of reduced titanium oxide on the nickel surface after 10-40 min of hydrogen reduction at 700 K. The maximum CO uptake at room temperature was reduced to 30-40% of the pre-reduction value after 30 min of hydrogen reduction. These observations suggest that the commonly reported phenomenon of strong metal-support interaction (SMSI) is a result of partial coverage of the metal catalyst surface by titanium oxide.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 341-347 |
| Number of pages | 7 |
| Journal | Applications of Surface Science |
| Volume | 19 |
| Issue number | 1-4 |
| DOIs | |
| State | Published - Nov 1984 |
Funding
This research is partially supported by the US Department of Energy, Office of Energy Research, Division of Materials Sciences Grant No. DE-AC02-78ER4946. Acknowledgment is made to the Donors of the Petroleum Research Fund, administered by the American Chemical Society, for partial support of this research. Measurements were made in the Surface Science Facility of Northwestern University’s Materials Research Center which is supported by the National Science Foundation MRL DMR82-16972.
ASJC Scopus subject areas
- General Engineering