HYDROTHERMAL MODIFICATION OF SILICA-GELS (XEROGELS) .1. EFFECT OF TREATMENT TEMPERATURE ON THEIR POROUS STRUCTURE

Authors
LEBODA R MENDYK E GIERAK A TERTYKH VA
Citation
R. Leboda et al., HYDROTHERMAL MODIFICATION OF SILICA-GELS (XEROGELS) .1. EFFECT OF TREATMENT TEMPERATURE ON THEIR POROUS STRUCTURE, Colloids and surfaces. A, Physicochemical and engineering aspects, 105(2-3), 1995, pp. 181-189
Citations number
29
Categorie Soggetti
Chemistry Physical
Journal title
Colloids and surfaces. A, Physicochemical and engineering aspects → ACNP
ISSN journal
09277757
Volume
105
Issue
2-3
Year of publication
1995
Pages
181 - 189
Database
ISI
SICI code
0927-7757(1995)105:2-3<181:HMOS(.>2.0.ZU;2-M
Abstract
The effect of hydrothermal treatment temperature (in the range 150-300 degrees C) on the structural parameters of silica gels was investigat ed. Silica gels with different starting porous structures were used fo r modification. The specific surface areas of the modified sorbents va ried from 830 to 12 m(2) g(-1). Simple mathematical equations describi ng the changes in specific surface area and pore diameter with treatme nt temperature are proposed. From the mathematical and/or graphical de pendences it is possible to program the hydrothermal treatment process to obtain silica gels with desired porous structures.