method for reducing contaminants in the production of a glycol hydrogenolysis product; and method of manufacturing propylene glycol or ethylene glycol

摘要

abstract method for reducing contaminants in the production of a glycol hydrogenolysis product; and method of making propylene glycol or ethylene glycol is a method for reducing contaminants in the production of a polyol hydrogenolysis bioderivated glycol product. The method involves subjecting a mixture of aqueous polyol product (from the conversion of biologically derived carbohydrate feedstock hydrogenolysis) to ion exclusion chromatography to separate and reduce impurities from an eluent fraction containing a desired product and distilling the mixture. eluent fraction to yield the desired product (e.g. propylene glycol or ethylene glycol). The reaction product mixture may be introduced into a continuous ion exclusion chromatography system to reduce impurities and to produce in a high yield a commercially acceptable finished glycol product.