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Adsorption of Colloidal Silica on Alumina and of Colloidal Alumina on Silica
Author(s) -
ILER R. K.
Publication year - 1964
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1964.tb14391.x
Subject(s) - colloid , adsorption , colloidal silica , chemical engineering , materials science , suspension (topology) , silicate , layer (electronics) , aqueous solution , graphite , inorganic chemistry , chemistry , nanotechnology , composite material , organic chemistry , coating , engineering , mathematics , homotopy , pure mathematics
The mutual adsorption of colloidal silica on alumina and of colloidal alumina on silica and silicate materials occurs in aqueous suspension at about pH 4. It is shown that the adsorption of colloidal particles on the surface of opposite charge is limited to essentially a monoparticle layer. An adsorbed layer of fibrils of colloidal alumina on the surfaces of silica, asbestos, graphite, and finely divided clay is shown in electron micrographs. The effect of the adsorbed colloid on dispersibility of the substrate materials is discussed.