Partially hydrophilicized silica gel and process for producing t

Details Partially hydrophilicized silica gel and process for producing t Partially hydrophilicized silica gel and process for producing t

1986-12-24

1987-09-15

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

204165, C07F 708, C07F 718

Patent

active

046940928

ABSTRACT:
Disclosed herein is partially hydrophilicized silica gel which has hydrophobic groups such as octadecylsilyl group on the pore inside and silanol groups or hydrophilic organic groups on the surface. Also disclosed herein is a process for producing such silica gel.
The silica gel has many applications as an adsorbent and catalyst carrier by virtue of the hydrophobic group and silanol group or hydrophilic organic group which are coexistent with each other. The silica gel is produced by performing plasma treatment on silica gel having hydrophobic groups on the entire surface including the pore inside, whereby eliminating the hydrophobic groups on the external surface and causing the silanol groups to appear.

REFERENCES:
patent: Re29948 (1979-03-01), Dwyer et al.
patent: 2531427 (1950-11-01), Hauser
patent: 3839389 (1974-10-01), Neumann

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