(439g) Fabrication of Nano-Structured Catalysts and Catalyst Supports By ALD

The preparation of heterogeneous catalysts by Atomic Layer Deposition (ALD) offers the opportunity to produce a wide range of interesting materials. This talk will focus on the synthesis and potential applications of thin-film perovskites on high-surface-area supports. Perovskites are of interest as “Intelligent Catalysts” due to their ability to stabilize catalytic metals in high-temperature applications. Because bulk materials tend to have low surface areas that limit their application, we have prepared high-surface-area, thin-film perovskites by ALD on high-surface-areas substrates. The properties of these thin films as catalyst supports will be discussed. Furthermore, it will be demonstrated that some perovskites which are unstable in bulk form, such as CeFeO₃ and CeMnO₃, can be stabilized as thin films.