期刊
CHEMSUSCHEM
卷 6, 期 1, 页码 199-208出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201200610
关键词
biomass; cellulose; renewable resources; supported catalysts; synthetic methods
资金
- European Commission [FP7-241566]
- European Commission
- KU Leuven
- FWO
- Belgian American Educational Foundation
- Plateforme pour l'Education et le Talent
- Fulbright Commission-Belgium
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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