Catalytic Glycerol Conversion Into 1,2-propanediol In Absence Of Added Hydrogen

摘要

Conversion of glycerol into high yields of 1,2-propanediol in absence of added hydrogen is possible with Pt impregnated NaY zeolite characterized by extra-zeolitic metal particles combined with zeolite Bronsted acidity.rn1,2-Propanediol is a bulk chemical intermediate used for the production of unsaturated polyester resins, as an industrial solvent and antifreeze, an approved additive in foods, cosmetics and pharmaceutical preparations, and as a lubricant for food machinery. Whereas the traditional industrial route involves hydration of propene oxide, glycerol of renewable origin seems to be an attractive source for sustainable future production of chemical intermediates. Glycerol is known to react with hydrogen to form 1,2-propanediol and water via consecutive dehydration and hydrogenation reactions. Unfortunately, literature results imply the use of expensive bio- or petrochemically derived hydrogen. Hydrogen originating from reforming of natural gas or petroleum fractions makes the process dependent on fossil carbon.