Silica-based chromatographic supports containing additives

Details Silica-based chromatographic supports containing additives Silica-based chromatographic supports containing additives

B - Operations, Transporting

01

D

31/1, 182/2, 23/

B01D 15/08 (2006.01) B01J 20/32 (2006.01) B01J 21/06 (2006.01)

Patent

CA 1236075

ABSTRACT Silica based chromatographic and reactive materials are disclosed with surfaces modified to contain or to be coated with oxides, hydrous oxides, hydroxides, carbonates or silicates of aluminum, iron, or other suitable metals such as zirconium or titanium. The materials exhibit good resistance to dissolution and resulting loss of activity or cloggins. This good resistance is particularly evident even in the high pH region (above 8-9) where the dissolution rates and solubilities of aluminosilicates and of trivalent iron oxides are much smaller than those of silica.

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