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Free keywords:
Silyl enolate of acetylacetone; Polymer coating; Crosslinking; γ-radiation; Peroxides; Azo-t-butane; Alumina based “reversed-phase” material
Abstract:
Various methods and reagents for silanization of silicas originating from different manufacturers were investigated in comparison to the method published by the authors which makes use of an enolate of acetylacetone. This reagent proved to be highly reactive.
New types of reversed phase materials were also synthesized by polymer coating applying crosslinking and chemical bonding to the surfaces of silica and alumina. In this work dicumyl peroxide and azo-t-butane were used for radical generation.
The reversed phase materials obtained with alumina can be used for separations at PH-values up to 12. Silica materials begin to already be deteriorated at a PH-value of 8.
