Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 85-96 |
| Number of pages | 12 |
| Journal | Journal of Molecular Catalysis |
| Volume | 94 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1994 |
| MoE publication type | A1 Journal article-refereed |
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The effect of preparation methods on the properties of zirconia/silicas. / Toba, Makoto; Mizukami, Fujio (Corresponding Author); Niwa, Shu-ichi; Sano, Tsuneji; Maeda, Kazuyuki; Annila, Arto; Komppa, Veikko.
In: Journal of Molecular Catalysis, Vol. 94, No. 1, 1994, p. 85-96.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - The effect of preparation methods on the properties of zirconia/silicas
AU - Toba, Makoto
AU - Mizukami, Fujio
AU - Niwa, Shu-ichi
AU - Sano, Tsuneji
AU - Maeda, Kazuyuki
AU - Annila, Arto
AU - Komppa, Veikko
PY - 1994
Y1 - 1994
N2 - Zirconia/silicas were prepared by three methods, namely complexing-agent assisted sol—gel, coprecipitation and hydrogel kneading. The relationship between the preparation methods and properties of the zirconia/silicas was investigated by X-ray powder diffraction, solid-state magic angle spinning nuclear magnetic resonance (MAS-NMR), ammonia temperature-programmed desorption (TPD) and nitrogen adsorption. Among the three methods, the complexing-agent assisted sol—gel method gave the most homogeneous zirconia/silicas and the Zr-O-Si bond formation. The specific surface area of the zirconia/silicas depended on the complexing agents used in the preparations and the Zr/Si ratios. In contrast, the kneaded zirconia/silicas were relatively heterogeneous and their properties did not depend on the Zr/Si ratio. In the dependence of properties of zirconia/silicas on the Zr/Si ratio, the coprecipitation zirconia/silicas are intermediate between the complexing-agent assisted sol—gel and kneaded ones.
AB - Zirconia/silicas were prepared by three methods, namely complexing-agent assisted sol—gel, coprecipitation and hydrogel kneading. The relationship between the preparation methods and properties of the zirconia/silicas was investigated by X-ray powder diffraction, solid-state magic angle spinning nuclear magnetic resonance (MAS-NMR), ammonia temperature-programmed desorption (TPD) and nitrogen adsorption. Among the three methods, the complexing-agent assisted sol—gel method gave the most homogeneous zirconia/silicas and the Zr-O-Si bond formation. The specific surface area of the zirconia/silicas depended on the complexing agents used in the preparations and the Zr/Si ratios. In contrast, the kneaded zirconia/silicas were relatively heterogeneous and their properties did not depend on the Zr/Si ratio. In the dependence of properties of zirconia/silicas on the Zr/Si ratio, the coprecipitation zirconia/silicas are intermediate between the complexing-agent assisted sol—gel and kneaded ones.
U2 - 10.1016/0304-5102(94)87031-4
DO - 10.1016/0304-5102(94)87031-4
M3 - Article
VL - 94
SP - 85
EP - 96
JO - Journal of Molecular Catalysis
JF - Journal of Molecular Catalysis
SN - 0304-5102
IS - 1
ER -