High mannitol process (alkaline hydrogenation in presence of...

Details High mannitol process (alkaline hydrogenation in presence of... High mannitol process (alkaline hydrogenation in presence of...

C - Chemistry, Metallurgy

07

C

260/632.7

C07C 31/26 (2006.01)

Patent

CA 1107764

- 30 - HIGH MANNITOL PROCESS (ALKALINE HYDROGENATION IN PRESENCE OF ALKALI METAL CARBONATE) ABSTRACT OF THE DISCLOSURE Sugar mixtures comprising glucose and either mannose, fructose, or both, are catalytically hydrogenated in aqueous solution containing 0.2-1.5% by weight (based on sugar) of sodium carbonate or other basic reacting alkali metal salt, yielding mannitol-rich solutions of sorbitol and mannitol. Hydrogenation is preferably carried out in two stages, the first at temperature of about 60°-100°C., the second at temperatures of about 110°-160°C.

321592

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