Patent ID: 9617235
Date: 2017-04-11
CPC Classifications: B01J,C07C,C07D,C07G

Claim:
1. Process for transformation of lignocellulosic biomass or cellulose into mono-oxidized or poly-oxidized compounds, in which the lignocellulosic biomass or the cellulose is brought into contact, simultaneously, with a combination of at least two homogeneous catalysts and one or more heterogeneous catalyst(s), in the same reaction chamber, in the presence of at least one solvent, with said solvent being water by itself or in a mixture with at least one other solvent, under a reducing atmosphere, and at a temperature of between 50° C. and 250° C., and at a pressure of between 0.5 MPa and 20 MPa, in which At least a first homogeneous catalyst is selected from among the metal salts that may or may not be hydrated, having the general formula M At least a second homogeneous catalyst is selected from among the inorganic or organic Brønsted acids, Said heterogeneous catalyst(s) comprising at least one metal that is selected from among the metals of groups 6 to 11 and the metals of group 14 of the periodic table, and a substrate that is selected from among the oxides of the elements that are selected from among aluminum, titanium, silicon, zirconium, cerium, and niobium, and the mixed oxides that are selected from among the aluminates of zinc, copper, and cobalt, with said oxides being able to be doped or not by at least one metal compound that is selected from among tungsten, tin, molybdenum and antimony, taken by themselves or in a mixture, the aluminosilicates that may or may not be crystallized, the aluminophosphates, and the crystallized or amorphous carbon-containing compounds.