Aluminum modified colloidal silica via sodium silicate

被引:19
|
作者
Tsai, MS [1 ]
Wu, WC [1 ]
机构
[1] So Taiwan Univ Technol, Dept Chem Engn, Yung Kang 710, Tainan Hsien, Taiwan
关键词
aluminum; colloidal silica; sodium silicate;
D O I
10.1016/j.matlet.2003.12.006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The colloidal silica via sodium silicate was modified by adding the Al ion in the surface growth process of colloidal silica. The particle sizes of modified colloidal silica were decreased by increasing the seed concentration. But the particle size of colloidal silica was slight increased as seeds concentration was 30 wt.%. Aluminum ions on the surface of modified colloidal silica was identified by the measurement of EDS. The iso-electrical point (IEP) of colloidal silica was changed from pH similar to2 without modification to disappear over the whole pH range after modified with Al ion. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:1881 / 1884
页数:4
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