Spray dried silica for chromatography

摘要

A process for preparing a low-cost silica packing for chromatography is disclosed. The process involves spray-drying an aqueous silica sol containing from 5 to 60 weight percent silica, to form porous micrograins having a dense packing, acid-washing the porous micrograins, and sintering to effect a 5 to 20% loss in surface area.