Properties of highly dispersed silicas precipitated in an organic medium

被引:26
作者
Jesionowski, T [1 ]
Krysztafkiewicz, A [1 ]
机构
[1] Poznan Tech Univ, Inst Chem Technol & Engn, PL-60965 Poznan, Poland
关键词
D O I
10.1080/01932699908943876
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Silicas were obtained using a precipitation technique from metasilicate solution with an acidic agent. The precipitation process includes formation of silica particles and their aggregation. Alcohol solutions were used in the production process of the highly dispersed silicas, resulting in a partial blocking of the silica surface silanol groups and, thus, in a decreased hydrophilicity of silica. The precipitated silicas were subjected to physicochemical, structural, and microscopic evaluation, and their surface properties were examined. The effect of alcohols on the silica particle size distributions and on hydrophobicity of silica surface was tested.
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收藏
页码:1609 / 1623
页数:15
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