The effect of preparation methods on the properties of zirconia/silicas

Makoto Toba, Fujio Mizukami (Corresponding Author), Shu-ichi Niwa, Tsuneji Sano, Kazuyuki Maeda, Arto Annila, Veikko Komppa

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)85-96
Number of pages12
JournalJournal of Molecular Catalysis
Volume94
Issue number1
DOIs
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed

Fingerprint

Zirconia
Silica
Coprecipitation
Magic angle spinning
Temperature programmed desorption
Hydrogels
Specific surface area
X ray powder diffraction
Ammonia
Nuclear magnetic resonance
Nitrogen
Adsorption

Cite this

Toba, M., Mizukami, F., Niwa, S., Sano, T., Maeda, K., Annila, A., & Komppa, V. (1994). The effect of preparation methods on the properties of zirconia/silicas. Journal of Molecular Catalysis, 94(1), 85-96. https://doi.org/10.1016/0304-5102(94)87031-4
Toba, Makoto ; Mizukami, Fujio ; Niwa, Shu-ichi ; Sano, Tsuneji ; Maeda, Kazuyuki ; Annila, Arto ; Komppa, Veikko. / The effect of preparation methods on the properties of zirconia/silicas. In: Journal of Molecular Catalysis. 1994 ; Vol. 94, No. 1. pp. 85-96.
@article{fba29d230a734e3096af7fe75d05accc,
title = "The effect of preparation methods on the properties of zirconia/silicas",
abstract = "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.",
author = "Makoto Toba and Fujio Mizukami and Shu-ichi Niwa and Tsuneji Sano and Kazuyuki Maeda and Arto Annila and Veikko Komppa",
year = "1994",
doi = "10.1016/0304-5102(94)87031-4",
language = "English",
volume = "94",
pages = "85--96",
journal = "Journal of Molecular Catalysis",
issn = "0304-5102",
publisher = "Elsevier",
number = "1",

}

Toba, M, Mizukami, F, Niwa, S, Sano, T, Maeda, K, Annila, A & Komppa, V 1994, 'The effect of preparation methods on the properties of zirconia/silicas', Journal of Molecular Catalysis, vol. 94, no. 1, pp. 85-96. https://doi.org/10.1016/0304-5102(94)87031-4

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 journalArticleScientificpeer-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 -