transformation process of lignocellulosic biomass or cellulose by solid tungsten oxide-based lewis catalysts and a metal chosen in groups 8 to 11

摘要

process of transformation of lignocellulosic biomass or cellulose by solid catalysts of tungsten oxide-based lewis and a metal chosen in groups 8 to 11. The present invention relates to a process of transformation of lignocellulosic biomass or cellulose using tungsten oxide-based heterogeneous catalysts dispersed on an oxide-based support, preferably based on aluminum oxide (s)) and / or zirconium and / or titanium and / or niobium and containing an element in the state particular metallic. The use of these catalysts makes it possible to obtain directly valuable products containing three carbon atoms, in particular the high selectivity hydroxyacetone and propylene glycol.