An auxiliary chamber designed to simulate both catalysis processing and operating conditions is in regular use in the EMSL DOE User Facility. The UHV compatible chamber allows studies to be undertaken of the impact of catalysis processing on the surface composition and chemical state without exposure to air. Comparison studies have demonstrated significant advantages of this system over other methods of sample preparation and delivery. Studies have been conducted controlling processing temperature, temperature profiles and gas composition on catalysts related to auto-emission control, fuel cell operation and production of biofuels. By combining the XPS studies with electron microscopy it is possible to learn about structure, chemistry and function of catalysis configured with differing initial physical and chemical compositions. We have developed analysis software, which features an embedded expert system, to quickly extract information about the surface chemical structure and the enrichment or depletion of elements on the catalysis surface.

Impact of custom side chamber in a wide range of catalysis related XPS studies

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.