Ethylene Adsorption and Reaction on Pd(111): An Angle-Dependent EELS Analysis.
Abstract
The chemisorption and surface reactivity of ethylene on a palladium (111) surface near room temperature has been studied by high-resolution electron energy loss spectroscopy (EELS). The C2H4 molecule reacts with the Pd(111) surface to form a rather stable surface species which is identified as ethylidyne (C(3+)-CH3) by analysis of the EELS vibrational spectra. This molecule is also formed on Pt(111) and Rh(111) and is believed to be symmetrically bonded at threefold surface sites. Angle-dependent EELS spectra are reported and show the relative importance of impact and dipole excitation mechanisms Off-specular data is found to be of critical importance in drawing conclusions about surface bonding symmetry from EELS spectra.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 28, 1981
- Accession Number
- ADA109722
Entities
People
- J. A. Gates
- L. L. Kesmodel
Organizations
- Indiana University Bloomington