Method for the production of sorbit
AssigneeBASF SE
InventorsDominic Vanoppen, Melanie Maas-Brunner, Ulrich Kammel, Jan-Dirk Arndt
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Abstract
A process is described for preparing sorbitol by catalytic hydrogenation of a monosaccharide forming sorbitol on hydrogenation in the liquid phase, which comprises the catalyst being obtainable by: i) single or multiple treatment of an amorphous silicon dioxide based support material with a halogen-free aqueous solution of a low-molecular-weight ruthenium compound and subsequent drying of the treated support material at below 200° C., ii) reducing the solid obtained in i) with hydrogen at from 100 to 350° C., step ii) being carried out immediately after step i).
Claims16
A process for preparing sorbitol, comprising:
- catalytically hydrogenating a monosaccharide in an aqueous solution in the presence of a ruthenium catalyst to form sorbitol, said ruthenium catalyst being prepared by:
- i) treating an amorphous silicon dioxide based support material with a halogen-free aqueous solution of a low-molecular-weight ruthenium compound in a single treatment or by multiple treatments and then subsequently drying the treated support material at a temperature below 200° C., and then immediately thereafter
- ii) reducing the solid obtained in i) with hydrogen at a temperature ranging from 100 to 350° C.
Dependencies are inferred from the claim text.