Silica-Containing Mixed-Oxide Gels Prepared by a Coprecipitation Method as Novel Packing Materials for Liquid Chromatography

The separation characteristics of silica-zirconia. silica-alumina, Silica-titania, and silica-magnesia gels for benzene, dimethyl phthalate, and pyridine have been evaluated as column packing materials for liquid chromatography. Of these mixed-oxide gels, silica-magnesia had the best separation ability particularly for a basic compound, pyridine depending presumably on the reduction of the activity of silanol group on silica surface.

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