Mechanism of structural ordering of monodisperse spherical silica particles my concentrated alcohol suspensions

Authors
Serdobintseva, VV Kalinin, DV Danilyuk, AF
Citation
Vv. Serdobintseva et al., Mechanism of structural ordering of monodisperse spherical silica particles my concentrated alcohol suspensions, REACT KIN C, 67(1), 1999, pp. 143-147
Citations number
7
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
REACTION KINETICS AND CATALYSIS LETTERS
ISSN journal
01331736 → ACNP
Volume
67
Issue
1
Year of publication
1999
Pages
143 - 147
Database
ISI
SICI code
0133-1736(199905)67:1<143:MOSOOM>2.0.ZU;2-R
Abstract
Structural ordering of monodispersed spherical silica particles (MSSP) occu rs in ammonia stabilized concentrated suspensions obtained by tetraethoxysi lane (TEOS) hydrolysis in alcohol-aqueous solutions in the ammonia concentr ation range from 0.0001 to 0.0008 mol/L. MSSP interaction follows the DLFO (Deryagin, Landau Ferway, and Overbeck) mechanism when electrostatic repuls ive forces between the particles predominate, and the structural ordering r equires straightened conditions, which are provided by suspension concentra ting through MSSP gravitational precipitation.