Preparation of Ultrafine Zirconia Particles

Ultrafine ZrO2 particles have been prepared via a new sol‐gel process. This process involves the addition of excess C2H4O into the aqueous ZrOCl2 solution and reacting the mixture at room temperature; a glassy ZrO(OH)2 gel is formed moments later. An ultrafine ZrO2 powder is obtained after the gel i...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1999-03, Vol.82 (3), p.768-770
Main Author: Xie, Yuqun
Format: Article
Language:English
Subjects:
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
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Summary:Ultrafine ZrO2 particles have been prepared via a new sol‐gel process. This process involves the addition of excess C2H4O into the aqueous ZrOCl2 solution and reacting the mixture at room temperature; a glassy ZrO(OH)2 gel is formed moments later. An ultrafine ZrO2 powder is obtained after the gel is dried and calcined; the powder is monoclinic. The average particle size is ∼12 nm, and its specific surface area is 55.1 m2/g. In addition, partially stabilized ZrO2 can be prepared in the same manner, yielding a good result.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1999.tb01832.x