STRUCTURE AND CHEMISTRY OF THE SURFACE OF SILICATES AND METALLOSILICATES AS SUPPORTS AND CATALYSTS .1. SYNTHESIS, MODEL, STRUCTURE, AND PROPERTIES OF THE SURFACE OF DISPERSED SILICA USED AS A CATALYST SUPPORT

Authors
CHUKIN GD APRETOVA AI
Citation
Gd. Chukin et Ai. Apretova, STRUCTURE AND CHEMISTRY OF THE SURFACE OF SILICATES AND METALLOSILICATES AS SUPPORTS AND CATALYSTS .1. SYNTHESIS, MODEL, STRUCTURE, AND PROPERTIES OF THE SURFACE OF DISPERSED SILICA USED AS A CATALYST SUPPORT, Kinetics and catalysis, 34(4), 1993, pp. 630-636
Citations number
15
Categorie Soggetti
Chemistry Physical
Journal title
Kinetics and catalysis → ACNP
ISSN journal
00231584
Volume
34
Issue
4
Year of publication
1993
Pages
630 - 636
Database
ISI
SICI code
0023-1584(1993)34:4<630:SACOTS>2.0.ZU;2-I
Abstract
A mechanism of silicic acid polymerization and sol formation at pH > 7 is proposed. The genesis of primary particles in the gel, the structu re of silica globules arising at pH > 7, and the chemistry of surface hydroxyls are considered. The mechanism of silica macrostructure forma tion is put forward, and its relation to micro- and macroparameters is discussed. Spectroscopic data is interpreted on the basis of the mode l proposed for the silica gel structure.