摘要
Aluminosilicate powders were obtained by hydrothermal treatment of mixed alkoxide solution containing Al2O3: SiO2 = 3: 2 (mol ratio) with distilled water at 300-600˚C under 10-100 MPa for 2 hr. Very fine crystalline pseudoboehmite (γ-Al00H)-like phase was formed at 300-500˚C under 10-100 MPa. Above 600˚C, instead of the pseudoboehmite-like phase, amorphous product was formed under 10 MPa, Al-Si spinel under 50 MPa, and hydralsite (2Al2O3.2SiO2.H2O), AS(H)-II (close to Al2SiO5), Al-Si spinel and a small amount of mullite (3Al3O3.2SiO2-2Al2O3-SiO2) under 100 MPa, respectively. Transmission electron microscope (TEM) revealed that the pseudoboehmite-like phase obtained at 300˚C under 50 MPa was thin plate of about 10 ran thick and 100 nm long, and contained homogeneously both Al and Si in the narrow area as a few hundreds nm2, by energy dispersive spectrometric (EDS) analysis. The organic solvent such as benzene and alcohol might stabilize the fine crystals of pseudoboehmite-like phase and prevent the crystalization of hydralsite or As(H)-II.
| 原文 | English |
|---|---|
| 頁（從 - 到） | 215-220 |
| 頁數 | 6 |
| 期刊 | journal of the japan society of powder and powder metallurgy |
| 卷 | 31 |
| 發行號 | 6 |
| DOIs | |
| 出版狀態 | Published - 1984 一月 1 |
指紋
All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Industrial and Manufacturing Engineering
- Metals and Alloys
- Materials Chemistry
引用此文
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Preperation of Powders in the Al2O3-SiO2 System by Hydrothermal Treatment of Alkoxide. / Somiya, Shigeyuki; Yoshimura, Masahiro; Suzuki, Matsuo; Hiraishi, Shun Ichi.
於: journal of the japan society of powder and powder metallurgy, 卷 31, 編號 6, 01.01.1984, p. 215-220.研究成果: Article
TY - JOUR
T1 - Preperation of Powders in the Al2O3-SiO2 System by Hydrothermal Treatment of Alkoxide
AU - Somiya, Shigeyuki
AU - Yoshimura, Masahiro
AU - Suzuki, Matsuo
AU - Hiraishi, Shun Ichi
PY - 1984/1/1
Y1 - 1984/1/1
N2 - Aluminosilicate powders were obtained by hydrothermal treatment of mixed alkoxide solution containing Al2O3: SiO2 = 3: 2 (mol ratio) with distilled water at 300-600˚C under 10-100 MPa for 2 hr. Very fine crystalline pseudoboehmite (γ-Al00H)-like phase was formed at 300-500˚C under 10-100 MPa. Above 600˚C, instead of the pseudoboehmite-like phase, amorphous product was formed under 10 MPa, Al-Si spinel under 50 MPa, and hydralsite (2Al2O3.2SiO2.H2O), AS(H)-II (close to Al2SiO5), Al-Si spinel and a small amount of mullite (3Al3O3.2SiO2-2Al2O3-SiO2) under 100 MPa, respectively. Transmission electron microscope (TEM) revealed that the pseudoboehmite-like phase obtained at 300˚C under 50 MPa was thin plate of about 10 ran thick and 100 nm long, and contained homogeneously both Al and Si in the narrow area as a few hundreds nm2, by energy dispersive spectrometric (EDS) analysis. The organic solvent such as benzene and alcohol might stabilize the fine crystals of pseudoboehmite-like phase and prevent the crystalization of hydralsite or As(H)-II.
AB - Aluminosilicate powders were obtained by hydrothermal treatment of mixed alkoxide solution containing Al2O3: SiO2 = 3: 2 (mol ratio) with distilled water at 300-600˚C under 10-100 MPa for 2 hr. Very fine crystalline pseudoboehmite (γ-Al00H)-like phase was formed at 300-500˚C under 10-100 MPa. Above 600˚C, instead of the pseudoboehmite-like phase, amorphous product was formed under 10 MPa, Al-Si spinel under 50 MPa, and hydralsite (2Al2O3.2SiO2.H2O), AS(H)-II (close to Al2SiO5), Al-Si spinel and a small amount of mullite (3Al3O3.2SiO2-2Al2O3-SiO2) under 100 MPa, respectively. Transmission electron microscope (TEM) revealed that the pseudoboehmite-like phase obtained at 300˚C under 50 MPa was thin plate of about 10 ran thick and 100 nm long, and contained homogeneously both Al and Si in the narrow area as a few hundreds nm2, by energy dispersive spectrometric (EDS) analysis. The organic solvent such as benzene and alcohol might stabilize the fine crystals of pseudoboehmite-like phase and prevent the crystalization of hydralsite or As(H)-II.
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U2 - 10.2497/jjspm.31.215
DO - 10.2497/jjspm.31.215
M3 - Article
AN - SCOPUS:0021477102
VL - 31
SP - 215
EP - 220
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 6
ER -