Porous silica and chromatographic carrier
AssigneeAgc Si-Tech Co., Ltd.
InventorsYOUICHI KAYANO, RYOU NAKASHIMA, HIROYOSHI MIYAHARA
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Abstract
To provide a porous silica having high alkali resistance; and a chromatographic carrier using such a porous silica. A porous silica comprising a phosphorus oxide component and a zirconium oxide component, wherein the amount of phosphorus atoms per unit specific surface area of the porous silica is from 1 μmol/m2 to 25 μmol/m2; and the amount of zirconium atoms per unit specific surface area of the porous silica is from 1 μmol/m2 to 15 μmol/m2. And, a chromatographic carrier which contains a ligand immobilized to such a porous silica.
Claims15
A porous silica comprising a phosphorus oxide component and a zirconium oxide component, wherein the amount of phosphorus atoms per unit specific surface area of the porous silica is from 1 μmol/m2 to 25 μmol/m2, and the amount of zirconium atoms per unit specific surface area of the porous silica is from 1 μmol/m2 to 15 μmol/m2.
A method for producing a porous silica, which comprises attaching a phosphorus oxide precursor and a zirconium oxide precursor in an optional order or simultaneously to a porous silica, followed by calcining.
Dependencies are inferred from the claim text.