Zirconia Gels in Concentrated NaOH

The sol‐gel process was used to produce zirconia powders that were pressed into compacts. The powders were synthesized from zirconium n‐propoxide, diluted in propanol, and hydrolyzed with molar ratios of water either l‐to‐l or lo‐to‐l. Zirconia compacts produced in this manner were soaked in 1N NaOH...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1995-01, Vol.78 (1), p.221-224
Main Authors: Pavlik Jr, Robert S., Klein, Lisa C., McCauley, Ronald A.
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:The sol‐gel process was used to produce zirconia powders that were pressed into compacts. The powders were synthesized from zirconium n‐propoxide, diluted in propanol, and hydrolyzed with molar ratios of water either l‐to‐l or lo‐to‐l. Zirconia compacts produced in this manner were soaked in 1N NaOH to simulate a membrane cleaning process, and their weight loss was recorded. Zirconia samples with a higher weight fraction of tetragonal phase exhibited less weight loss than samples with more monoclinic phase. The weight fraction of the tetragonal phase was controlled by synthesis conditions and tiring temperature.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1995.tb08388.x