UV-Laser Photolysis Studies of Reactions of Hydrocarbons on Supported Metal Surfaces.
Abstract
The adsorption of CO on both alumina supported rhodium and titania supported rhodium has been investigated by Fourier Transform Infrared Spectroscopy (FTIR), Thermal Desorption and Isotopic substitution methods. The titania support has been shown to interact chemically with the rhodium even though the surfaces were prepared under mild reducing conditions (H2, 150C) compared to those normally used to induce the Strong Metal Support Interaction (SMSI) (H2, T>500C). Preliminary investigations into the adsorption of formaldehyde and acetone onto alumina supported rhodium surfaces has also been conducted. These systems were used to attempt to directly photolyze the adsorbates using an excimer laser. No evidence for decomposition of the molecularly adsorbed species was observed. This is believed to be due to low absorptivities of the surface species and rapid quenching by the metal substrate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 28, 1987
- Accession Number
- ADA176382
Entities
People
- Joseph T. Keiser
Organizations
- University of Richmond