Formation of CaTiO3 by grinding from mixtures of CaO or Ca(OH)2 with anatase or rutile at room temperature

Guomin Mi; Fumio Saito; Shigeru Suzuki; Yoshio Waseda

doi:10.1016/S0032-5910(98)00012-6

Formation of CaTiO₃ by grinding from mixtures of CaO or Ca(OH)₂ with anatase or rutile at room temperature

Guomin Mi, Fumio Saito, Shigeru Suzuki, Yoshio Waseda

Micro System Integration Center (μSIC)

Tohoku University

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

Room temperature grinding by a planetary ball mill has been applied to four kinds of mixtures prepared from CaO or Ca(OH)₂ and anatase or rutile (TiO₂). Crystalline CaTiO₃ can be mechanochemically synthesized by grinding the mixture of CaO with both forms of TiO₂ but is difficult to obtain from the mixtures of Ca(OH)₂ and TiO₂. These observations are in contrast to the results of Avvakumov et al. [E.G. Avvakumov, E.T. Devyatkina, N.V. Kosova, Mechanochemical reactions of hydrated oxides, J. Solid State Chem. 113 (1994) 379-383] and are in agreement with the thermodynamic data. The reactivity of CaO or Ca(OH)₂ with anatase is slightly higher than is the case with rutile. Heating of the ground mixtures at about 900-1200 K is found to be effective for producing crystalline CaTiO₃.

Original language	English
Pages (from-to)	178-182
Number of pages	5
Journal	Powder Technology
Volume	97
Issue number	2
DOIs	https://doi.org/10.1016/S0032-5910(98)00012-6
Publication status	Published - 1998 Jun 15

Keywords

Calcium hydroxide
Calcium oxide
Calcium titanate
Grinding
Mechanochemistry
Planetary ball mill
Titanium dioxide

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10.1016/S0032-5910(98)00012-6

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title = "Formation of CaTiO3 by grinding from mixtures of CaO or Ca(OH)2 with anatase or rutile at room temperature",

abstract = "Room temperature grinding by a planetary ball mill has been applied to four kinds of mixtures prepared from CaO or Ca(OH)2 and anatase or rutile (TiO2). Crystalline CaTiO3 can be mechanochemically synthesized by grinding the mixture of CaO with both forms of TiO2 but is difficult to obtain from the mixtures of Ca(OH)2 and TiO2. These observations are in contrast to the results of Avvakumov et al. [E.G. Avvakumov, E.T. Devyatkina, N.V. Kosova, Mechanochemical reactions of hydrated oxides, J. Solid State Chem. 113 (1994) 379-383] and are in agreement with the thermodynamic data. The reactivity of CaO or Ca(OH)2 with anatase is slightly higher than is the case with rutile. Heating of the ground mixtures at about 900-1200 K is found to be effective for producing crystalline CaTiO3.",

keywords = "Calcium hydroxide, Calcium oxide, Calcium titanate, Grinding, Mechanochemistry, Planetary ball mill, Titanium dioxide",

author = "Guomin Mi and Fumio Saito and Shigeru Suzuki and Yoshio Waseda",

note = "Funding Information: One of the authors ( G.M. Mi ) is grateful to the Ministry of Edttcation, Science and Culture of Japan (Monbu:~ho) for the financial ~upport throttgh Ihe Monbuslm Sch,~talship.",

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doi = "10.1016/S0032-5910(98)00012-6",

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AU - Mi, Guomin

AU - Saito, Fumio

AU - Suzuki, Shigeru

AU - Waseda, Yoshio

N1 - Funding Information: One of the authors ( G.M. Mi ) is grateful to the Ministry of Edttcation, Science and Culture of Japan (Monbu:~ho) for the financial ~upport throttgh Ihe Monbuslm Sch,~talship.

PY - 1998/6/15

Y1 - 1998/6/15

N2 - Room temperature grinding by a planetary ball mill has been applied to four kinds of mixtures prepared from CaO or Ca(OH)2 and anatase or rutile (TiO2). Crystalline CaTiO3 can be mechanochemically synthesized by grinding the mixture of CaO with both forms of TiO2 but is difficult to obtain from the mixtures of Ca(OH)2 and TiO2. These observations are in contrast to the results of Avvakumov et al. [E.G. Avvakumov, E.T. Devyatkina, N.V. Kosova, Mechanochemical reactions of hydrated oxides, J. Solid State Chem. 113 (1994) 379-383] and are in agreement with the thermodynamic data. The reactivity of CaO or Ca(OH)2 with anatase is slightly higher than is the case with rutile. Heating of the ground mixtures at about 900-1200 K is found to be effective for producing crystalline CaTiO3.

AB - Room temperature grinding by a planetary ball mill has been applied to four kinds of mixtures prepared from CaO or Ca(OH)2 and anatase or rutile (TiO2). Crystalline CaTiO3 can be mechanochemically synthesized by grinding the mixture of CaO with both forms of TiO2 but is difficult to obtain from the mixtures of Ca(OH)2 and TiO2. These observations are in contrast to the results of Avvakumov et al. [E.G. Avvakumov, E.T. Devyatkina, N.V. Kosova, Mechanochemical reactions of hydrated oxides, J. Solid State Chem. 113 (1994) 379-383] and are in agreement with the thermodynamic data. The reactivity of CaO or Ca(OH)2 with anatase is slightly higher than is the case with rutile. Heating of the ground mixtures at about 900-1200 K is found to be effective for producing crystalline CaTiO3.

KW - Calcium hydroxide

KW - Calcium oxide

KW - Calcium titanate

KW - Grinding

KW - Mechanochemistry

KW - Planetary ball mill

KW - Titanium dioxide

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Formation of CaTiO₃ by grinding from mixtures of CaO or Ca(OH)₂ with anatase or rutile at room temperature

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