公开(公告)号：US3677938A

公开(公告)日：1972-07-18

申请号：US3677938D

申请日：1970-03-18

Applicant: PECHINEY SAINT GOBAIN

Inventor： PAGE MADELEINE A LE ,  VRIES ALBERT J DE

IPC: B01J20/10 ,  B01J21/00 ,  B01J23/02 ,  C01B33/113 ,  C01B33/16 ,  C04B18/02 ,  B01D15/08

CPC classification number: C04B18/027 ,  B01J20/10 ,  B01J20/103 ,  B01J21/00 ,  B01J23/02 ,  C01B33/113 ,  C01B33/16 ,  C04B18/021

Abstract: THIS INVENTION IS ADDRESSED TO THE CHROMATOGRAPHIC SEPARATION PROCESS USING COLUMNS FILLED WITH POROUS SILICA PARTICLES IN WHICH THE POROUS SILICA PARTICLES ARE FORMED BY CALCINATION OF SILICA GEL AT TEMPERATURES WITHIN THE RANGE OF 400-1000*C. WITH THE SILICA GEL CONTAINING FOREIGN ATOMS SUCH AS ALKALI METAL CATIONS AND ACIDIC ANIONS SUCH AS SULFUR, ETC.