Electrolytic process for the preparation of ethylene glycol and glycerine
AssigneeEastman Kodak Company
InventorThomas J. Devon
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Abstract
The present invention provides a process for the preparation of ethylene glycol and glycerine by a selective electrolysis that cleaves the carbon-carbon bonds of carbohydrate-derived polyols into two- and three-carbon units. The intermediate products can then be reduced to the desired ethylene glycol and glycerine products using standard reduction technology. The electrolysis is conducted in the presence of an electrolysis medium which contains manganese.
Claims6
A process for the production of ethylene glycol and glycerine which comprises (a) electrolyzing a carbohydrate-derived polyol in the presence of an electrolysis medium comprising manganese, and (b) reducing the intermediate products to ethylene glycol and glycerine.
A process for the production of ethylene glycol and glycerine which comprises (a) electrolyzing a carbohydrate-derived polyol selected from among sorbitol, mannitol, D-(-)-frutose, xylitol, erythritol, and mixtures thereof in the presence of an electrolysis medium comprising about 50 to 500 ppm manganese, and (b) reducing the intermediate products to ethylene glycol and glycerine.
Dependencies are inferred from the claim text.