Centre National De La Recherche Scientifique

Ifp Energies Nouvelles

Universite Claude Bernard – Lyon1

Cnrs

Flora Chambon

Emmanuelle Guillon

Amandine Cabiac

Nadine Essayem

Catherine Pinel

Franck Rataboul

Nadine Essayen

The invention relates to a process for transformation of lignocellulosic biomass or cellulose using stable non-zeolitic heterogeneous catalysts that are based on tin and/or antimony, preferably dispersed on a substrate. The use of these catalysts makes it possible to obtain directly lactic acid with high selectivity while limiting the production of oligosaccharides and soluble polymers.

Process for converting cellulose or lignocellulosic biomass using stable non-zeolite solid Lewis acids based on tin or antimony alone or as a mixture

The invention relates to a process for transformation of lignoceliulosic biomass or cellulose that uses tungsten-oxide-based heterogeneous catalysts that are dispersed on an oxide-based substrate, preferably with a base of oxide(s) of aluminum and/or zirconium and/or titanium and/or niobium and containing an element in the particular metallic state. The use of these catalysts makes it possible to obtain directly upgradable products containing three carbon atoms, in particular hydroxyacetone and propylene glycol with high selectivity.

Process for transformation of lignocellulosic biomass or cellulose by tungsten-oxide-based solid lewis acid catalysts and a metal that is selected from groups 8 to 11

The invention relates to a process for transformation of lignocellulosic biomass or cellulose using heterogeneous catalysts that are based on tin oxide and/or antimony oxide, dispersed on a substrate and containing at least one element in the particular metal state. The use of these catalysts makes it possible to obtain directly upgradable products, in particular hydroxyacetone and propylene glycol with high selectivity.

Process for transformation of lignocellulosic biomass or cellulose by catalysts based on tin oxide and/or antimony oxide and a metal that is selected from the groups 8 to 11

The invention relates to a process for transformation of lignocellulosic biomass or cellulose that uses tungsten-based heterogeneous catalysts that are dispersed on an oxide-based substrate, preferably with a base of oxide(s) of aluminum and/or zirconium and/or titanium and/or niobium. The use of these catalysts makes it possible to obtain directly lactic acid with high selectivity while limiting the production of oligosaccharides and soluble polymers.

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Bron, France

Flora Chambon