The Synthesis of Stable, High Solid Content Alumina Sol
Source abstract
Abstract
The stable alumina sol with an ASB/water molar ratio of 1:30 could not be obtained via the general peptization process because gelation occurred immediately. With the addition of EAcAc the stability of this sol was greatly improved. The studies using TEM, UV-V is and IR spectra revealed that a surface modification layer was formed around the Al2O3 colloidal particle through the chelating reaction of EAcAc with the surface HO-Al groups. The Al2O3 colloidal particles were therefore sufficiently capped and the growth of the colloidal particles was effectively prevented.
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Research context
OpenAlex topics: Mesoporous Materials and Catalysis · Aerogels and thermal insulation · TiO2 Photocatalysis and Solar Cells
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