Preparation of functional sulphonated siliconated inorganic...

Details Preparation of functional sulphonated siliconated inorganic... Preparation of functional sulphonated siliconated inorganic...

C - Chemistry, Metallurgy

07

F

260/442.8

C07F 7/18 (2006.01) B01J 20/32 (2006.01) B01J 27/02 (2006.01) B01J 31/02 (2006.01) C07F 7/08 (2006.01)

Patent

CA 1134381

4620 ABSTRACT OF THE DISCLOSURE A functionalised solid product containing sulphonate or sulphonic acid groups is prepared from an inorganic oxide containing surface hydroxyl group-, e.g. silica by reacting the latter in a first stage with a haloalkyl alkoxy or aryloxysilane. The first stage product is then reacted with an aqueous solution of an inorganic sulphite to give a product containing sulphonate groups. These can be converted to sulphonic acid groups by an optional third stage treatment with dilute mineral acid. The final products are suitable for use as adsorbent materials or catalyst supports.

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