| 简介 |
The invention concerns a method for converting a feedstock selected from sugars or sugar alcohols, alone or in a mixture, into mono- or polyoxygenated compounds, wherein the feedstock is contacted simultaneously with a combination of at least one base selected from oxides, hydroxides and alcoholates of alkali or alkaline earth metals and at least one heterogeneous catalyst comprising a support selected from perovskites of formula ABO3, in which A is selected from the elements Mg, Ca, Sr and Ba and B is selected from the elements Fe, Mn, Ti and Zr, and the oxides of elements selected from lanthanum, neodymium, yttrium and cerium, alone or in a mixture, which oxides can be doped with at least one element selected from alkali metals, alkaline earths and rare earths, in a reducing atmosphere, at a temperature of 100° C to 300° C and at a pressure of 0.1 MPa to 50 MPa. |
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