SILICA MICROSPHERES FROM THE SYSTEM TETRAETHYL ORTHOSILICATE ACETIC-ACID WATER

被引：46

作者：

KARMAKAR, B

DE, G

KUNDU, D

GANGULI, D

机构：

[1] Sol-Gel Laboratory, Central Glass and Ceramic Research Institute, Calcutta

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1991年 / 135卷 / 01期

关键词：

D O I：

10.1016/0022-3093(91)90439-D

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dense silica microspheres (density 2.11-2.16 g cm-3) were obtained from a range of molar compositions tetraethyl orthosilicate (TEOS):CH3COOH:H2O = 1 :(0.5-4.0):(1.5-5.0), FTIR spectroscopic studies of the reaction between TEOS and CH3COOH in the presence and absence of water showed that acetic acid readily attacked TEOS and generated Si-OH groups via the formation of Si-OOCCH3 groups; (OH)-(OH) condensation finally led to the formation of silica particles.

引用

页码：29 / 36

页数：8

共 15 条

[11] SOL-GEL PROCESSING OF SILICA .2. THE ROLE OF THE CATALYST [J].