Ceria composition and process for preparing same
OwnerCheng-Hung Hung, Joseph Smith +2inventors
InventorsCheng-Hung Hung, Joseph Smith, George Fotou, Kenneth Koehlert
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Abstract
The present invention provides a cerium oxide particulate composition and a process for preparing a cerium oxide particulate composition comprising aggregates of approximately spherical primary particles of cerium oxide. The method involves preparing a solution of a cerium oxide precursor, aerosolizing the cerium oxide precursor solution, and heating the aerosol to provide the cerium oxide particle composition.
Claims55
A method of preparing a cerium oxide particle composition comprising preparing a solution consisting essentially of a cerium oxide precursor, converting the cerium oxide precursor solution into an aerosol having droplets with a diameter of about 100 μm or less, passing the aerosol through a high temperature reaction zone so that the cerium oxide precursor is converted to aggregates consisting essentially of approximately spherical primary particles of cerium oxide, and recovering the resulting aggregates as a cerium oxide particle composition.
A cerium oxide particulate composition comprising aggregates consisting essentially of approximately spherical primary particles of cerium oxide, wherein at least some of the aggregates are cenospherical aggregates.
Dependencies are inferred from the claim text.