Preparation of nanostructured platinum/yttria-stabilized zirconia cermet by the sol-gel method
- Univ. of Tokyo (Japan). Dept. of Chemical System Engineering
Nanostructured platinum/yttria-stabilized zirconia (YSZ) cermet (composite of ceramics and metal) is obtained by the sol-gel method. Influences of the processing parameters on the nanostructure are experimentally studied using X-ray diffraction, field emission scanning electron microscopy, electron probe microanalysis, and nitrogen adsorption. The nanostructure of the cermet is controlled by the Pt/YSZ ratio, gelling procedure, and calcination temperature. The slower gelling or higher temperature calcination enlarges the YSZ grain size. The addition of a smaller amount of Pt or calcination at higher temperatures reduce the Brunauer-Emmett-Teller (BET) surface area when calcined at 973 K or above. The addition of a larger amount of Pt increases the porosity when calcined at 973 K or above. By controlling the conditions of synthesis, gelling, and Pt content, the average YSZ grain size was kept within 50 nm after calcination at 1,173 K.
- OSTI ID:
- 419841
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 35, Issue 12; Other Information: PBD: Dec 1996
- Country of Publication:
- United States
- Language:
- English
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