01503nas a2200145   4500008004100000245012400041210006900165260000800234300001400242490000600256520091600262100002301178700002901201856012701230       2017                        eng d00aFrom lignocellulosic biomass to furfural: insight into the active species of a silica-supported tungsten oxide catalyst0 aFrom lignocellulosic biomass to furfural insight into the active  cJUL  a2709-27160 v93 a<p>A sol–gel-synthesized silica-supported tungsten oxide catalyst that has Lewis acidity was characterized and employed as a solid acid catalyst in the synthesis of furfural directly from lignocellulosic biomass (isolated xylans and crop wastes). In a one-pot method, 71 % furfural formation from isolated xylan was possible using a water/toluene (1:2 v/v) biphasic solvent system at 170 °C after 10 h over 10 wt % WO3/SiO2. The WO3/SiO2 catalyst in the selective conversion of pentosan from crop wastes (bagasse, wheat straw, and rice husk) yielded 72–87 % furfural under the optimum reaction conditions. Additionally, the catalyst presented excellent recyclability in at least eight runs after simple water washing. From the catalyst characterization studies, it was suggested that silicotungstic-type acid species are anchored on the WO3/SiO2 catalyst that help to achieve a good catalytic activity.</p>1 aBhaumik, Prasenjit1 aDhepe, Paresh, Laxmikant  uhttps://library.ncl.res.in/content/lignocellulosic-biomass-furfural-insight-active-species-silica-supported-tungsten-oxide