Hydrothermal synthesis and morphology control of boehmite

被引:4
作者
He, JY [1 ]
Ponton, CB
机构
[1] Univ Birmingham, IRC Mat, Birmingham B15 2TT, W Midlands, England
[2] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England
关键词
boehmite; hydrothermal synthesis; aluminium acetate; morphology; particle size; characterisation;
D O I
10.1080/08957950108206171
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The effect of synthesis conditions on the size and morphology of boehmite particles in the sol produced by hydrothermal processing has been investigated. Transmission electron microscopy, X-ray diffraction and Laser particle size analysis were used to characterise the synthesized boehmite. Results show that the initial hydrothermal solution pH has a significant effect on the particle size and morphology. As the pH changes from low (acid) to high (alkaline), the morphology changes from a "needle-like" one to a "platelet" one. Under the conditions investigated here, the synthesis temperature and time in comparison have little apparent effect on the particle size. However, the precursor concentration, while having little noticeable effect on the elementary particle size, does result in extensive agglomeration when it is very high.
引用
收藏
页码:241 / 254
页数:14
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