Specific features of the formation of a porous structure in products of leaching of two-phase sodium borosilicate glasses in acid-salt solutions

被引：9

作者：

Tsyganova, T. A. ^{[1
]}

Antropova, T. V. ^{[1
]}

Rakhimova, O. V. ^{[1
]}

Kostyreva, T. G. ^{[1
]}

机构：

[1] Russian Acad Sci, Grebenshchikov Inst Silicate Chem, St Petersburg 199034, Russia

来源：

GLASS PHYSICS AND CHEMISTRY | 2007年 / 33卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

Glass Physic; Porous Glass; Pure Acid; Sodium Borosilicate Glass; Polished Disk;

D O I：

10.1134/S1087659607020046

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：

This paper reports on the results of an investigation into the influence of the addition of a KCl salt to an HCl acid solution on the leaching kinetics of two-phase sodium borosilicate glasses and on the structural parameters of the leaching products (porous glasses). The contributions from different molecular species of silica to its total amount in leaching solutions are evaluated using the kinetic spectrophotometric technique for determining silicon in the form of beta-silicomolybdic heteropoly acid. It is revealed that the addition of the salt to the leaching acid solution leads to a fast polymerization process with the formation of weakly structurized silica gel.

引用

页码：122 / 129

页数：8

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