Loading...
Please wait, while we are loading the content...
Similar Documents
Co adsorption on (111) and (100) surfaces of the pt sub 3 ti alloy. evidence for parallel binding and strong activation of co
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mehandru, S. P. Ross, P. N. Anderson, A. B. |
| Copyright Year | 1985 |
| Description | The CO adsorption on a 40 atom cluster model of the (111) surface and a 36 atom cluster model of the (100) surface of the Pt3Ti alloy was studied. Parallel binding to high coordinate sites associated with Ti and low CO bond scission barriers are predicted for both surfaces. The binding of CO to Pt sites occurs in an upright orientation. These orientations are a consequence of the nature of the CO pi donation interactions with the surface. On the Ti sites the orbitals donate to the nearly empty Ti 3d band and the antibonding counterpart orbitals are empty. On the Pt sites, however, they are in the filled Pt 5d region of the alloy band, which causes CO to bond in a vertical orientation by 5 delta donation from the carbon end. |
| File Size | 8280999 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850023863 |
| Archival Resource Key | ark:/13960/t23c0xk1b |
| Language | English |
| Publisher Date | 1985-01-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Binding Chemisorption Atom Concentration Titanium Alloys Adsorption Platinum Alloys Chemical Reactions Clumps Activation Pattern Recognition Carbon Monoxide Heat of Formation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
