Roquette Freres

Laurent Dambrine

Mathias Ibert

Flora Chambon

A method for selective hydrogenation of furan-2,5-dialdehyde (DFF) into 2,5-di(hydroxymethyl)furan (DHMF) and into 2,5-di(hydroxymethyl)tetrahydrofuran (DHMTHF). In relation to the prior art, which uses C6 sugars or 5-hydroxymethyl furaldehyde (5-HMF) as raw materials, the method can be performed at low temperatures (lower than 120&#xb0; C., preferably 80&#xb0; C.), while consuming low amounts of catalyst relative to the initial reagent (in particular less than 5%, preferably less than 2% relative to the weight of the reagent). The heterogeneous catalyst used can also be recycled from one reaction to another. Finally, the choice of experimental conditions enables the selective formation of DHMF or DHMTHF.

Method for synthesising 2,5-di(hydroxymethyl)furan and 2,5-di(hydroxymethyl)tetrahydrofuran by selective hydrogenation of furan-2,5-dialdehyde

A method for synthesizing 2,5-furandicarboxylic acid (FDCA) from furan-2,5-dialdehyde (DFF). The method is industrially applicable due to the simplicity and availability of the reagents used, and due to the experimental conditions on which the method is based: the method requires low temperatures and enables a reaction under atmospheric pressure, the reaction times being relatively short. Furthermore, the method does not lead to the formation of salts that need to be treated downstream from the method, and the catalytic ratio relative to the initial product is particularly low.

Method for synthesising 2,5-furandicarboxylic acid from a composition containing furan-2,5-dialdehyde

A method for oxidizing 5-hydroxymethyl furaldehyde, includes at least one step of oxidation in the presence of an organic acid, a nitroxyl radical, an oxygen source, and an oxygen transfer agent.

Growing community of inventors

Sains en Gohelle, France

Laurent Dambrine