Chemistry of metal oxide supported nanoclusters of gold and iridium

PHYS 341

Charles Buddie Mullins, mullins@che.utexas.edu1, Rotimi Ojifinni1, Jinlong Gong1, and J. M. White, jmwhite@mail.utexas.edu2. (1) Department of Chemical Engineering, University of Texas, 1 University Station C0400, Austin, TX 78712-1062, (2) Department of Chemistry and Biochemistry, Center for Materials Chemistry, University of Texas at Austin, TX 78712, Austin, TX 78712
We have employed molecular beam surface scattering techniques to study size-controlled nanoclusters of gold and iridium supported on metal oxide wafers. For the case of gold nanoclusters, oxidation reactions have been studied in which adsorbed oxygen atoms and molecules are created via an rf plasma beam source. Oxidation of carbon monoxide by both atomic and molecular oxygen are reported on gold as well as the effect of adsorbed water on this reaction. Adsorption of hydrogen and oxygen on supported iridium clusters is reported on as a function of cluster size.

Fundamentals of Metal Oxide Catalysis
1:20 PM-4:40 PM, Wednesday, 13 September 2006 Grand Hyatt San Francisco -- Portrero, Oral

Division of Physical Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006