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Title:
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Conversion of industrial (ligno)cellulose feeds to isosorbide with heteropoly acids and Ru on carbon
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Author(s):
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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.
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Published by:
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Publication date:
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ECN
Biomass & Energy Efficiency
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24-1-2013
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ECN report number:
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Document type:
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ECN-W--12-026
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Article (scientific)
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Number of pages:
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10
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Published in: ChemSusChem (Wiley-VCH Verlag), , 2013, Vol.6, p.199 -208.
Abstract:
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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