Synthesis of Cerium(IV) Oxide Ultrafine Particles by Solid‐State Reactions

Abstract

CeO 2 ultrafine particles were prepared by solid‐state reactions at room temperature. These particles were found to have very fine particle sizes (∼3 nm) with a fluorite structure ( a = 5.42 Å). BET measurements showed that the surface area of the particles was 96.2 m 2 /g. The use of two different precursors was found to affect the size of the CeO 2 particles. We discuss the effect of calcination at different temperatures on the morphology, size, and BET surface area of CeO 2 particles. A salt byproduct coating prevented agglomeration of the CeO 2 particles.