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Nanocrystalline Mixed Metal Oxides Novel Oxygen Storage Materials

H. Sarkas, P.G. Murray, A. Fay and R.W. Brotzman_Jr.
Nanophase Technologies Corporation, US

Keywords: ceria, doped-ceria, nanoparticle, oxygen storage

Abstract:
Nanophase Technologies Corporation employs a new physical vapor synthesis technique to manufacture ceria-based mixed rare earth oxide nanomaterials. The mixed rare earth oxide nanoparticles are dense, discrete crystals. The compositions are solid solutions that remain thermally stable to above 1050C. Ceria is an active oxygen storage material. Doping ceria with other rare earth metals enhances the thermal stability of nanocrystalline particle size and increases the oxygen storage capacity (OSC). The mean particle size, and static and dynamic OSC of ceria-based mixed rare earth oxides will be presented as a function of particle composition, morphology, and thermal history. These materials are being engineered for several applications including oxygen storage catalysts and polishing materials.

Nanotech 2004 Conference Technical Program Abstract

 
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