Method for hydrogenating aqueous solutions of carbohydrates
AssigneeUop LLC
InventorBlaise J. Arena
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Abstract
Zerovalent Group VIII metals dispersed on titanium dioxide reduced and calcined at a temperature less than about 300.degree. C. are hydrothermally stable hydrogenation catalysts which may be used advantageously in the reduction of aqueous solutions of carbohydrates. The use of ruthenium on titanium dioxide in the hydrogenation of glucose affords sorbitol in excellent yields with quite high selectivity.
Claims11
A method for the hydrogenation of a carbohydrate in aqueous solution to its polyols comprising contacting at hydrogenation conditions a reaction medium consisting essentially of said solution with hydrogen and a catalyst consisting essentially of from about 0.1% to about 25% of a zerovalent metal selected from the group consisting of ruthenium, palladium, and platinum dispersed on titanium dioxide, and recovering the formed polyols.
Dependencies are inferred from the claim text.