Center for Functional Nanomaterials Seminar

"Unraveling mechanistic insights of heterogeneous catalytic reactions over model surfaces"

Presented by Sanjaya Senanayake, Brookhaven National Laboratory

Thursday, April 29, 2010, 10:00 am — CFN, Bldg 735, Conference Room A

Catalysis is at the forefront of global research initiatives aimed at targeting critical environmental problems and addressing ever increasing energy demands. The "surface science" approach has been successful with the use of well defined model surfaces to explain critical aspects of complex real world catalysis but challenges still remain in finding suitable answers to key questions including: identification of active sites, role of interfaces, and correlation of structure to selectivity/activity. This talk will present recent studies of cerium oxide based model catalysts that have become very important as an industrially critical catalyst material due to unique oxygen storage properties. The talk will encompass the following: 1. Probing the redox surface chemistry of oxides with organic molecules 2. Modeling automotive catalysis (CO+NO) using metal nanoparticles supported on oxides (M/Ox) and 3. Understanding the remarkable reactivity observed from oxide nanoparticles in the production of H2 (WGS) in inverse (Ox/M) and mixed oxide (Ox1/Ox2) catalysts.

Hosted by: Peter Sutter

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