| Synthesis And Activity Of Pd Nanoparticle Catalysts | ||
| Patrick D. Burton1, David M. Lavenson1, David Gorm1, Ayman Karim1, Abhaya K. Datye1, Bernadette A. Hernandez-Sanchez2 and Timothy J. Boyle2, (1)Chemical and Nuclear Engineering, University of New Mexico, Center for Micro-Engineered Materials, MSC01 1120, Albuquerque, NM 87124, (2)Inorganic Chemistry and Nanomaterials - 1846, Sandia National Laboratories, Advanced Materials Laboratory - MS 1349, 1001 University Blvd. S.E., Albuquerque, NM 87106 In this work, we will present the results of the synthesis of colloidal monodisperse Pd nanoparticles supported on aluminum oxide (Al2O3) that retain their size distribution and exhibit remarkable thermal stability, after becoming catalytically active for CO oxidation. Collodial nanoparticle synthesis provides a method to prepare well-defined catalysts that can provide improved activity and selectivity. The nanoparticles we have prepared were found to be well dispersed, with an average diameter of 2.4 ± 0.4 nm. Supported particles demonstrate good conversion to CO2 and good size stability after oxidation and calcination (2.4 ± 0.4 nm (as prepared) 2.6 ± 0.7 nm (after calcination), 2.9 ± 1 nm (after reaction)). The calcined sample does show evidence of a few larger particles, but the majority remain close to the starting diameter. After surfactant removal, these particles are catalytically active in CO oxidation. This work has been supported by the United States Department of Energy, Office of Basic Energy Sciences under contract number DE-FG02-05ER15712 (University of New Mexico) and DE-AC0494AL85000 (Sandia National Laboratories). Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company for the United States Department of Energy. Extended Abstract Status: Not Uploaded | ||