Structure and Reactivity in Catalytic Systems Involving Metal Oxides and Electrode Surfaces.
Abstract
Secondary ion mass spectrometry as a kinetic tool was developed was used to characterize a number of interesting metal-metal oxides and metal-adsorbate systems. The most significant of these include the behavior of rhodium and platinum on titanium dioxide thin films. We showed conclusively that the rhodium and platinum on titanium dioxide thin films. We showed conclusively that the rhodium and platinum overlayers become encapsulated with TiO when these metals on metal oxides are heated. This is the most direct evidence of longstanding interest in strong metal support interactions for the mechanism by which the interaction occurs. We have also characterized carefully the role of small amounts of impurities in noble metals and their influence on catalysis . These levels are established by secondary ion mass spectroscopy and lie below the detectability limits of Auger electron spectroscopy. Finally, we have established the kinetics of surface decomposition of species like methoxide on platinum using SIMS to monitor the decomposition channels directly.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 1986
- Accession Number
- ADA177096
Entities
People
- J. Michael White
Organizations
- University of Texas at Austin