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Conversion of industrial (ligno)cellulose feeds to isosorbide with heteropoly acids and Ru on carbon
Op de Beeck, B.; Geboers, J.; Vyver, S. van de; Lishout, J. van; Snelders, J.; Huijgen, W.J.J.; Courtin, C.M.; Jacobs, P.A.; Sels, B.F.
Gepubliceerd door: Publicatie datum:
ECN Biomass & Energy Efficiency 24-1-2013
ECN publicatienummer: Publicatie type:
ECN-W--12-026 Artikel wetenschap tijdschrift
Aantal pagina's:

Gepubliceerd in: ChemSusChem (Wiley-VCH Verlag), , 2013, Vol.6, p.199 -208.

The catalytic valorization of cellulose is currently subject of intense research. Isosorbide is among the most interesting products that can be formed from cellulose as it is a potential platform molecule and can be used for the synthesis of a wide range of pharmaceuticals, chemicals, and polymers. A promising direct route from cellulose to isosorbide is presented in this work. The strategy relies on a one-pot bifunctional catalytic concept, combining heteropoly acids, viz. H4SiW12O40, and redox catalysts, viz. commercial Ru on carbon, under H2 pressure. Starting from pure microcrystalline cellulose, a rapid conversion was observed, resulting in over 50% isosorbide yield. The robustness of the developed system is evidenced by the conversion of a range of impure cellulose pulps obtained by organosolv fractionation, with isosorbide yields up to 63%. Results were compared with other (ligno)cellulose feedstocks, highlighting the importance of fractionation and purification to increase reactivity and convertibility of the cellulose feedstock.

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