title: Conversion of (ligno)cellulose feeds to isosorbide with heteropoly acids and Ru on carbon.
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. H(4)SiW(12)O(40), and redox catalysts, viz. commercial Ru on carbon, under H(2) 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.
authors: Centre for Surface Chemistry and Catalysis, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, 3001 Heverlee, Belgium.
authors: Beau
authors: B
authors: Op de Beeck
authors: Jan
authors: J
authors: Geboers
authors: Stijn
authors: S
authors: Van de Vyver
authors: Jonas
authors: J
authors: Van Lishout
authors: Jeroen
authors: J
authors: Snelders
authors: Wouter J J
authors: WJ
authors: Huijgen
authors: Christophe M
authors: CM
authors: Courtin
authors: Pierre A
authors: PA
authors: Jacobs
authors: Bert F
authors: BF
authors: Sels
mesh_terms: D000148:Acids, Noncarboxylic / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D007547:Isosorbide / Q000737:chemistry*; D008031:Lignin / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D013012:Sorbitol / Q000737:chemistry
chemical_list: D000148:Acids, Noncarboxylic; C036909:lignocellulose; D013012:Sorbitol; D002244:Carbon; D012428:Ruthenium; D002482:Cellulose; D008031:Lignin; C109691:microcrystalline cellulose; D007547:Isosorbide