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Method for Preparation of Nanometer Cerium-Based Oxide Particles
Materials Science and Engineering Faculty Research & Creative Works
  • X.-D. Zhou, Missouri University of Science and Technology
  • Wayne Huebner, Missouri University of Science and Technology
  • Harlan U. Anderson, Missouri University of Science and Technology
Abstract

The invention comprises novel undoped and doped nanometer-scale CeO2 particles as well as a novel semi-batch reactor method for directly synthesizing the novel particles at room temperature. The powders exhibited a surface area of approximately 170 m2/g with a particle size of about 3-5 nm, and are formed of single crystal particles that are of uniform size and shape. The particles’ surface area could be decreased down to 5 m2/g, which corresponds to a particle size of 100 nm, by thermal annealing at temperatures up to 1000° C. Control over the particle size, size distribution and state of agglomeration could be achieved through variation of the mixing conditions such as the feeding method, stirrer rate, amount of O2 gas that is bubbled through the reactor, the temperature the reaction is carried out at, as well as heating the final product at temperatures ranging from 150° to 1000° C.

Department(s)
Materials Science and Engineering
Patent Application Number
10/146,824
Patent Number
US 7,025,943 B2
Document Type
Patent
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2006 The Curators of the University of Missouri, All rights reserved.
Publication Date
4-11-2006
Citation Information
X.-D. Zhou, Wayne Huebner and Harlan U. Anderson. "Method for Preparation of Nanometer Cerium-Based Oxide Particles" (2006)
Available at: http://works.bepress.com/wayne-huebner/29/